Just want to show the my DX amps inside the old sansui case. Very rugged.
dx turbo using 3 pairs,65 volts. driving the bass ,very lovely bass.
dx standard 1 pair 20 volts driving high.
excellent because adjusting the high will not affect the bass, adjusting the bass will not affect the high. very good sonic. Perfect for me.
dx turbo using 3 pairs,65 volts. driving the bass ,very lovely bass.
dx standard 1 pair 20 volts driving high.
excellent because adjusting the high will not affect the bass, adjusting the bass will not affect the high. very good sonic. Perfect for me.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
That's the idea i have applied in the Dx TriAmp.... one not affect the other
I am, rigth now, preparing the TriAmp to receive the active input filter (IC)... then i will have full control of bass, treble and midranges.
Thank you very much by the pictures Masterinvi.
Very good idea to join the DHR Turbo and the Dx Amplifier.
regards,
Carlos
I am, rigth now, preparing the TriAmp to receive the active input filter (IC)... then i will have full control of bass, treble and midranges.
Thank you very much by the pictures Masterinvi.
Very good idea to join the DHR Turbo and the Dx Amplifier.
regards,
Carlos
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I am doing that...rigth now..waiting the postman with the active circuit
made by a friend in the Amazon State.
...and i am feeling good doing that...watch uncle charlie last picture..hehehehe
regards,
Carlos
made by a friend in the Amazon State.
...and i am feeling good doing that...watch uncle charlie last picture..hehehehe
regards,
Carlos
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Ahahahha!.... watch my teeth.... i am looking nice isn't it?
This was because one brazilian forum i was visiting... and i was banished from there twice...someone have asked me, several years ago, if special, expensive audio cables are a need.
I said......... have answered, that may be good to the ones are selling.
Man!... the main moderator was the supplier in Brasil for these special cables!
hehehehe..... business..main thing there...know how, truth and these things are not allowed if they go against that Brazilian forum interests.
Good people there, but awfull management.... for them i have posted this image, but in the teeth was not DX painted there..... was painted HT.
heheheheheh
regards,
Carlos
This was because one brazilian forum i was visiting... and i was banished from there twice...someone have asked me, several years ago, if special, expensive audio cables are a need.I said......... have answered, that may be good to the ones are selling.
Man!... the main moderator was the supplier in Brasil for these special cables!
hehehehe..... business..main thing there...know how, truth and these things are not allowed if they go against that Brazilian forum interests.
Good people there, but awfull management.... for them i have posted this image, but in the teeth was not DX painted there..... was painted HT.
heheheheheh
regards,
Carlos
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hahahaha uncle charly...
I never wished to see you that nice ! 😀
Can I replace with MJL21193/MJL21194 outputs of DX standard to compare with DX Turbo.. ? supply voltage would be +/-50
if so what will be the output of both amps under 8/4/2 ohms and the minimum ampere to be supplied ?
cheers !
I never wished to see you that nice ! 😀
Can I replace with MJL21193/MJL21194 outputs of DX standard to compare with DX Turbo.. ? supply voltage would be +/-50
if so what will be the output of both amps under 8/4/2 ohms and the minimum ampere to be supplied ?
cheers !
Attachments
Yeah...i forgot to shame myself and was for too long time under the sunligth
I was toasted by the weather.
Nice picture..nice guy...nice smile.
.................................................
Yes, you can replace the output transistors, to compare is good to have the same, but in advance, i will tell you...install the one you want and you will not feel difference..they are almost the same transistors made by different factories only..the rest is unobtanium, beliefs, myths and so on.
Supply ampere.... 7.5 to each channel, in other words, the amplifier will "suck" from the supply something around 3.75 amperes to each rail..... aproximatelly..... if you use a single supply, them you will need twice of this current..... condensers may be around 20 thousand plus 20 thousand microfarads..and this to EACH AMPLIFIER SUPPLY...if you decide to build a single supply (will kill separation and will murder sound stage),then install 40 thousand plus 40 thousand microfarads...rectifier, use to the current you will suck.
Power will be the same..there's no magic because several transistor and only one transistor,
Sound will not be too much different too.
Using 50 volts you will have 100, and 175 watts...and this depends your supply....the DHR Turbo will have sligthly more because several transistors..maybe can reach 185 or even 190 watts in 4 ohms.
Do not use 2 ohms... this is too much dangerous..also distortion increases too much..if you want more power, then try Quasi amplifier or Jan Dupont design. or other amplifier you can find in Rodd Elliot products, the ESP internet pages.
Using 50 volts you have too use, at least, 2 pairs..or the single pair will burn..if have not burned till today...will burn tomorrow..... maybe your supply reduce voltage and this protects..maybe full volume your supply drop down to 42 volts..and this voltage the amplifier can hold with 4 ohms loads.
Man...if you are a powerholic...i do not know if you are.... try other design..something with higher voltage in the supplies..... something using 85 or 90 volts.
I do not use this voltage...i think it is dangerous... rail to rail voltage, above 50 volts can be dangerous to people health..even if the voltage is DC.
The advantage in power, humans does not perceive when you increase the power 20 or 30 percent...you must double, and better if multiply power by four to feel really advantage.
So...compare something that has 100 watts with other amplifier that has 170 watts seems the same.....
Of course, if your speaker can hold 100 watts and cannot hold 170 watts..then the speaker will show you producing noises and hitting the magnetic core end...but if your speaker can hold both powers..then nothing will be perceived..absolutelly no audible advantage.
Supply voltage, versus power and output impedance was published in the Dx amplifier, HRII, DHR Turbo, Precison 1, Dx Blame ES, Trust and others...please, read the threads to avoid me to be repeating things already commented, discussed and posted.
regards,
Carlos
I was toasted by the weather.
Nice picture..nice guy...nice smile.
.................................................
Yes, you can replace the output transistors, to compare is good to have the same, but in advance, i will tell you...install the one you want and you will not feel difference..they are almost the same transistors made by different factories only..the rest is unobtanium, beliefs, myths and so on.
Supply ampere.... 7.5 to each channel, in other words, the amplifier will "suck" from the supply something around 3.75 amperes to each rail..... aproximatelly..... if you use a single supply, them you will need twice of this current..... condensers may be around 20 thousand plus 20 thousand microfarads..and this to EACH AMPLIFIER SUPPLY...if you decide to build a single supply (will kill separation and will murder sound stage),then install 40 thousand plus 40 thousand microfarads...rectifier, use to the current you will suck.
Power will be the same..there's no magic because several transistor and only one transistor,
Sound will not be too much different too.
Using 50 volts you will have 100, and 175 watts...and this depends your supply....the DHR Turbo will have sligthly more because several transistors..maybe can reach 185 or even 190 watts in 4 ohms.
Do not use 2 ohms... this is too much dangerous..also distortion increases too much..if you want more power, then try Quasi amplifier or Jan Dupont design. or other amplifier you can find in Rodd Elliot products, the ESP internet pages.
Using 50 volts you have too use, at least, 2 pairs..or the single pair will burn..if have not burned till today...will burn tomorrow..... maybe your supply reduce voltage and this protects..maybe full volume your supply drop down to 42 volts..and this voltage the amplifier can hold with 4 ohms loads.
Man...if you are a powerholic...i do not know if you are.... try other design..something with higher voltage in the supplies..... something using 85 or 90 volts.
I do not use this voltage...i think it is dangerous... rail to rail voltage, above 50 volts can be dangerous to people health..even if the voltage is DC.
The advantage in power, humans does not perceive when you increase the power 20 or 30 percent...you must double, and better if multiply power by four to feel really advantage.
So...compare something that has 100 watts with other amplifier that has 170 watts seems the same.....
Of course, if your speaker can hold 100 watts and cannot hold 170 watts..then the speaker will show you producing noises and hitting the magnetic core end...but if your speaker can hold both powers..then nothing will be perceived..absolutelly no audible advantage.
Supply voltage, versus power and output impedance was published in the Dx amplifier, HRII, DHR Turbo, Precison 1, Dx Blame ES, Trust and others...please, read the threads to avoid me to be repeating things already commented, discussed and posted.
regards,
Carlos
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uncle carlos, the 2 input capacitors 10uf/16v is equivalent to 5 uf non polar (1 pc)? If i have a circuit which has damaged 1uf non polar, can i replace it with 2 pcs 2uf connected in same manner with turbo input caps?
Yes you can...no troubles at all.
In both cases, answer is yes.
There are two ways...one is in series, when you will have a result 5uf but will still have polarized units.
The other way is to connect negative with negative...so, both extremes will be positive, this constitutes a NP....of course, to use positive with positive is possible too, say, instead to connect negative with negative.
I prefer to use, or a feel better,or a like the most, to connect negative with negative..but is is only personnal, i do not know any scientific reason to support this...it is non sense, just my preference.
The reason not to use smaller..... because listening tests... the reason to use electrolitics, because the non electrolitics, with this huge value, use to be big, and some of them are form 400 volts or more, enormous things..alike a whale parked over the board....but NP is always better than polarised ones.... in special because their internal constructions are not coil shape.... coils represent a resistance to high frequency signal crosses..also there are something alike "spring effect", a counter action.
regards,
Carlos
In both cases, answer is yes.
There are two ways...one is in series, when you will have a result 5uf but will still have polarized units.
The other way is to connect negative with negative...so, both extremes will be positive, this constitutes a NP....of course, to use positive with positive is possible too, say, instead to connect negative with negative.
I prefer to use, or a feel better,or a like the most, to connect negative with negative..but is is only personnal, i do not know any scientific reason to support this...it is non sense, just my preference.
The reason not to use smaller..... because listening tests... the reason to use electrolitics, because the non electrolitics, with this huge value, use to be big, and some of them are form 400 volts or more, enormous things..alike a whale parked over the board....but NP is always better than polarised ones.... in special because their internal constructions are not coil shape.... coils represent a resistance to high frequency signal crosses..also there are something alike "spring effect", a counter action.
regards,
Carlos
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thanks uncle carlos, ur amp made my ear smile(does ear smiles?) hahahaha, mine does if i listen to a good music. ur amp produces good music, true music, not noise music.
specially my turbo and standard dx. i heard mr turbo talking to miss standard, he said " honey sing it beautifully while i am pumping this 2 ohms woofer" hahahaha. i rewind my 200 watts daichi woofer, i make the coil bigger than the original, i measure it and it reads 2.1 ohms. now mr turbo's muscle is getting bigger everyday, hahahahaha, a macho amplifier.
3 pair with 65 volts dc supply driving 2.1 ohms woofer, are you afraid uncle carlos?
well mr turbo is fine.
Is he hot? of course he is. does he burn? NO.
well he last? i dont know. Tommorow i will short the output lead, surely he will die.
Am i crazy? YES I AM. hahahahaha
thanks for this amp uncle carlos. and thanks for ur reply today. ive learn a new things.
specially my turbo and standard dx. i heard mr turbo talking to miss standard, he said " honey sing it beautifully while i am pumping this 2 ohms woofer" hahahaha. i rewind my 200 watts daichi woofer, i make the coil bigger than the original, i measure it and it reads 2.1 ohms. now mr turbo's muscle is getting bigger everyday, hahahahaha, a macho amplifier.
3 pair with 65 volts dc supply driving 2.1 ohms woofer, are you afraid uncle carlos?
well mr turbo is fine.
Is he hot? of course he is. does he burn? NO.
well he last? i dont know. Tommorow i will short the output lead, surely he will die.
Am i crazy? YES I AM. hahahahaha
thanks for this amp uncle carlos. and thanks for ur reply today. ive learn a new things.
Join the club, there are a lot of happy crazy guys alike you here, i am one of them!
I am very happy to know you are feeling good...this is what feeds my soul!
Now your ears are dancing..wanna to dance with all your body?
Them build the Dx Blame ES...it is a killer, will smash all these others...but will beat because quality, not power.
And bass is a little bit shy... you have to increase your bass knob, if you have tone control to 3 hours to feel good having your home shacking.
regards,
Carlos
I am very happy to know you are feeling good...this is what feeds my soul!
Now your ears are dancing..wanna to dance with all your body?
Them build the Dx Blame ES...it is a killer, will smash all these others...but will beat because quality, not power.
And bass is a little bit shy... you have to increase your bass knob, if you have tone control to 3 hours to feel good having your home shacking.
regards,
Carlos
adopting polarised DC blocking caps
If you do go for back to back input caps then have a look at biasing the junction to a significant DC voltage.
I'd suggest double the peak input voltage.
i.e. for CD input of 2.2Vac try ~6V bias through a 470k resistor supplied from a voltage divider between supply rails.
It might be worth looking at bypassing this pair of series connected electrolytics with a small film cap.
If you do go for back to back input caps then have a look at biasing the junction to a significant DC voltage.
I'd suggest double the peak input voltage.
i.e. for CD input of 2.2Vac try ~6V bias through a 470k resistor supplied from a voltage divider between supply rails.
It might be worth looking at bypassing this pair of series connected electrolytics with a small film cap.
I am not reading Mr. Andrew T anymore, also i would like to inform that he is not
a representative, nor a consultant from Dx Corporation.... despite he is competent, skilled and very good with mathematics and electronics, i have some critics, some restrictions (restrições) about his personnal behavior:
Text about overdrive, about force amplifiers, about increase supply voltage:
Amplifiers, powered with voltage higher than the normal can burn becasue of
several reasons.... the most important is when we exceed the maximum voltage
from colector to emitter into the VAS transistor.... this transistor swings from
rail to rail less some power output saturating VCE volts... the voltage you have
from colector to emitter, audio voltage, will appear in your output, after some
losses, base to emitter junctions and output VCE saturating voltages (more or less
this way)...so, this unit is the one works hard, and it is responsable to all AC voltage
generated in your amplifier, the output will add current only, to face low impedance,
to face speaker loads, output gain is one, means that what enters is what exit.
Using voltage, lets say, 55 plus 55, you will have BD139, the main voltage amplifier,
destructed, because audio swing will be higher than the maximum allowed voltage,
then the junctions will burn, the transistor will be a short circuit... and burning,
it will connect the PNP power base at negative rail potential.... hehehehe. This one
will die too....and others may go, as you will have rail voltage in the ouput line.
Also, power dissipation, type of heatsinks can change dissipation, heat transference to
the air, position of heatsink is critical, if the enclosure is covered or not, if has hole or not
your environment temperature, if enclosure has holes inside and in the bottom panel, if
you have fan blower helping the cooling, if your heatsinks are inside or outside, how tigth
It is fixed into the heatsink, the type of insulating material, if you have heat compound or not,
all this influences how much power a transistor will dissipate..some 100 watts units, mounted
In bad heatsinks will burn because of several mistakes and bad uses during construction.
People use to say their amplifier was not burned, using low impedance loads (Masterinvi is one
of them), using only 2 or three pairs of output transistors.... lucky guy he is..also supply
may help him...when the amplifier is pumping full power, while connected to the 2 ohms loads,
The supply voltage will drop to 35 volts or even less...then the VAS will be safe, the output will
be under risk, for sure, there he may face troubles in the future.
There are other reasons.... distortions produces square waves, and this forces the amplifier to
reproduce generated harmonics, also square waves is almost a short during the horizontal line
moments, where the supply gives all it can...so, if people loves distortions.... they will force much
more their amplifeirs, for them a heavy duty 20 transistors is not enougth....not audiophile, some
of these guys are Monstriofiles...monster operators that thinks they are audiophiles.
Ahahahahahahah!
regards,
Carlos
a representative, nor a consultant from Dx Corporation.... despite he is competent, skilled and very good with mathematics and electronics, i have some critics, some restrictions (restrições) about his personnal behavior:
Text about overdrive, about force amplifiers, about increase supply voltage:
Amplifiers, powered with voltage higher than the normal can burn becasue of
several reasons.... the most important is when we exceed the maximum voltage
from colector to emitter into the VAS transistor.... this transistor swings from
rail to rail less some power output saturating VCE volts... the voltage you have
from colector to emitter, audio voltage, will appear in your output, after some
losses, base to emitter junctions and output VCE saturating voltages (more or less
this way)...so, this unit is the one works hard, and it is responsable to all AC voltage
generated in your amplifier, the output will add current only, to face low impedance,
to face speaker loads, output gain is one, means that what enters is what exit.
Using voltage, lets say, 55 plus 55, you will have BD139, the main voltage amplifier,
destructed, because audio swing will be higher than the maximum allowed voltage,
then the junctions will burn, the transistor will be a short circuit... and burning,
it will connect the PNP power base at negative rail potential.... hehehehe. This one
will die too....and others may go, as you will have rail voltage in the ouput line.
Also, power dissipation, type of heatsinks can change dissipation, heat transference to
the air, position of heatsink is critical, if the enclosure is covered or not, if has hole or not
your environment temperature, if enclosure has holes inside and in the bottom panel, if
you have fan blower helping the cooling, if your heatsinks are inside or outside, how tigth
It is fixed into the heatsink, the type of insulating material, if you have heat compound or not,
all this influences how much power a transistor will dissipate..some 100 watts units, mounted
In bad heatsinks will burn because of several mistakes and bad uses during construction.
People use to say their amplifier was not burned, using low impedance loads (Masterinvi is one
of them), using only 2 or three pairs of output transistors.... lucky guy he is..also supply
may help him...when the amplifier is pumping full power, while connected to the 2 ohms loads,
The supply voltage will drop to 35 volts or even less...then the VAS will be safe, the output will
be under risk, for sure, there he may face troubles in the future.
There are other reasons.... distortions produces square waves, and this forces the amplifier to
reproduce generated harmonics, also square waves is almost a short during the horizontal line
moments, where the supply gives all it can...so, if people loves distortions.... they will force much
more their amplifeirs, for them a heavy duty 20 transistors is not enougth....not audiophile, some
of these guys are Monstriofiles...monster operators that thinks they are audiophiles.
Ahahahahahahah!
regards,
Carlos
Another fairy tale is power transistors maximum dissipation
This is big magic ...... not possible to have these transistors dissipating what they said they can.
Why?
Because they test that using a big temperature conditioning machine, a big block of metal, an infinite heatsink using cooling.... this is measured while the case is 25 degrées celsius.....BUT, we have not that temperature in our heatsinks!
So, this 100 watts is not real...better to think about 40 watts, or something alike to each transistor..but this must be calculated based in the power consumption, the voltage you have (droped voltage), in the positive rail for instance, multiplied by the current you have (real one, divide voltage by speaker impedance) and them spread, divide that, share that with your rail transistors, considering 30 or 40 watts to each one of them..this is safe!
Do the same for the negative rail, of course, and them install your transistors.
Also use a blade, or equivalent, of 10 by 10 centimeters to each 10 watts RMS, this will keep heat under control.
Amplifier is pumping 200 watts..then 20 blades.
..............................................................
Drink Guaraná Antarctica, produced in Brasil, from seeds used by Indians for thousands of years..healthy and delicious flavor, used inside the Corporation Headquarters, for free, here you can drink all you can...it is a non alcoholic, delicious beverage, so delicious (or better) as Coca Cola
Cost 1 dollar to one litter..healthy, alike a drug heal diseases.... search for that miraculous product in the best shops of your town.... i am not a salesman, nor a producer, this is "by appointment" only.
This is big magic ...... not possible to have these transistors dissipating what they said they can.
Why?
Because they test that using a big temperature conditioning machine, a big block of metal, an infinite heatsink using cooling.... this is measured while the case is 25 degrées celsius.....BUT, we have not that temperature in our heatsinks!
So, this 100 watts is not real...better to think about 40 watts, or something alike to each transistor..but this must be calculated based in the power consumption, the voltage you have (droped voltage), in the positive rail for instance, multiplied by the current you have (real one, divide voltage by speaker impedance) and them spread, divide that, share that with your rail transistors, considering 30 or 40 watts to each one of them..this is safe!
Do the same for the negative rail, of course, and them install your transistors.
Also use a blade, or equivalent, of 10 by 10 centimeters to each 10 watts RMS, this will keep heat under control.
Amplifier is pumping 200 watts..then 20 blades.
..............................................................
Drink Guaraná Antarctica, produced in Brasil, from seeds used by Indians for thousands of years..healthy and delicious flavor, used inside the Corporation Headquarters, for free, here you can drink all you can...it is a non alcoholic, delicious beverage, so delicious (or better) as Coca Cola
Cost 1 dollar to one litter..healthy, alike a drug heal diseases.... search for that miraculous product in the best shops of your town.... i am not a salesman, nor a producer, this is "by appointment" only.
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but ...yes all the above you mention are facts and probably some others ...but seriously ...they can be eassily cured with a Device called VI limiter ... simple as that .... of course a VI limiter is not the solution for every problem ...but still it can help a lot
also a carefuly designed limiter will have as less effect is possible in sound ...
also a carefuly designed limiter will have as less effect is possible in sound ...
I was trying to avoid to say the opposite my dear friend
and i dislike to be sayng the opposite..you say hot and i say cold...you say pretty and i say ugly...here, this is, at least, bad education.....sadly i have to disagree with you my beloved friend....because you use to publish "this thing" in several threads..i use to jump 3 meters high and touching my head with the ceiling so pis... i feel reading..but i use to control myself, in special because we have constructed a beautifull friendship, with mutual respect...but..i have too.
I was trying, for several times,not to be boring or unkind, saying you may be wrong...well.... i will give up to try, as you continue thinking this way, and i think i will not help you continuing with my damn mouth shutted.
E/I limiters, or Voltage and current limiters, read the voltage developed in the power emitter resistances, this voltage is sent to a transistor junction, the transistor goes on and conducts from colector to emitter draining excess of votage you have entering the drivers..there are two or more transistors doing that, one for positive rail and other for negative rail.
Observe that rail peaks are different from positive to negative, means one will work in advance compare to the other.
Also observe that is much better to have some distorted peaks (dinamics improovement) than to have compression, or limiting..as the amplifier will behave strange..you will continue to increase volume and only the treble will increase after you reach the threshold current that will trigger the E/I limiter.
E/I limiter is the first thing i remove, and fast, from amplifiers, as they are quality killers!
This practice was used by factories to reduce costs, to reduce output transistors quantity, to reduce transistor power, this way avoiding to have transistors burned, the E/I do not let transistor be destroyed if well designed..but, kills the sound!... seeling more, by smaller price and huck customers with the bad sonics they will listen...a disrespect to customers.
regards,
Carlos
.......................................................................
Guaraná fruit is planted in a farm inside Amazon Jungle, the syrup is prepared there, cleaned, coocked, filtered, and prepared to a long voyage, down the river Amazon, to the south of the country were we have industries (Rio and São Paulo)..there they mix with watter and Gas and put in cans and bottles and distribute, including back to Amazon and whole world!
and i dislike to be sayng the opposite..you say hot and i say cold...you say pretty and i say ugly...here, this is, at least, bad education.....sadly i have to disagree with you my beloved friend....because you use to publish "this thing" in several threads..i use to jump 3 meters high and touching my head with the ceiling so pis... i feel reading..but i use to control myself, in special because we have constructed a beautifull friendship, with mutual respect...but..i have too.
I was trying, for several times,not to be boring or unkind, saying you may be wrong...well.... i will give up to try, as you continue thinking this way, and i think i will not help you continuing with my damn mouth shutted.
E/I limiters, or Voltage and current limiters, read the voltage developed in the power emitter resistances, this voltage is sent to a transistor junction, the transistor goes on and conducts from colector to emitter draining excess of votage you have entering the drivers..there are two or more transistors doing that, one for positive rail and other for negative rail.
Observe that rail peaks are different from positive to negative, means one will work in advance compare to the other.
Also observe that is much better to have some distorted peaks (dinamics improovement) than to have compression, or limiting..as the amplifier will behave strange..you will continue to increase volume and only the treble will increase after you reach the threshold current that will trigger the E/I limiter.
E/I limiter is the first thing i remove, and fast, from amplifiers, as they are quality killers!
This practice was used by factories to reduce costs, to reduce output transistors quantity, to reduce transistor power, this way avoiding to have transistors burned, the E/I do not let transistor be destroyed if well designed..but, kills the sound!... seeling more, by smaller price and huck customers with the bad sonics they will listen...a disrespect to customers.
regards,
Carlos
.......................................................................
Guaraná fruit is planted in a farm inside Amazon Jungle, the syrup is prepared there, cleaned, coocked, filtered, and prepared to a long voyage, down the river Amazon, to the south of the country were we have industries (Rio and São Paulo)..there they mix with watter and Gas and put in cans and bottles and distribute, including back to Amazon and whole world!
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yes uncle charly ...you are very correct but sudenlly this stopes to be a quality issue ... meaning all the above you said is very correct VI limmiters will have effect on the sound ( now days with dual or more slopes things are better ) but still you cannot produce anything above 100W without them
we can dissagree about an issue ...have diferent opinion butwe donthave fight about it
mostly the problem is that my approach is mostly PA and yours is high end ....
in PA and big power amps safety may come first regarding quality ...in PA systems you have to copromize to gain stability ,endurance and contrmeasures against abuse
Also a good thing is my opinion is A = VI limiters your opinion is B= no VI limiters ....the good thing from that if possible is to listen in any other alternative
can stability and endurance be achived in any other way ???? and if you come with any answer i will have to devide it versus cost .....
for example .... My latest project is a 350 W amplifier that will work in closed enclosure ( amplified speaker ) with an online power supply which of course is not allowed to be disscused here
the target of this is to produce the complete amplifier board, semis,and Psu with less than 100 euros
all is just a queston of target concept and approach
we can dissagree about an issue ...have diferent opinion butwe donthave fight about it
mostly the problem is that my approach is mostly PA and yours is high end ....
in PA and big power amps safety may come first regarding quality ...in PA systems you have to copromize to gain stability ,endurance and contrmeasures against abuse
Also a good thing is my opinion is A = VI limiters your opinion is B= no VI limiters ....the good thing from that if possible is to listen in any other alternative
can stability and endurance be achived in any other way ???? and if you come with any answer i will have to devide it versus cost .....
for example .... My latest project is a 350 W amplifier that will work in closed enclosure ( amplified speaker ) with an online power supply which of course is not allowed to be disscused here
the target of this is to produce the complete amplifier board, semis,and Psu with less than 100 euros
all is just a queston of target concept and approach
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If PA is the targed, i can agree with the use of V/I limiters
But my amplifiers are not for this purpose as you know, they are high end, so, it is not a good idea to destroy the audio quality because of powerholic needs, at least with my amplifiers.
I use to suggest people, when i see they are power maniacs, to go to other threads,to try something from ESP... this is to avoid them modifying my amplifiers to produce noises.... also big ammount of power..and noises too.
Why noises?.... when you have bass controled in level, and only treble increases..them, i feel that as noises...more noise than sound, as it is noisy and unballanced..too much treble is really noisy..have listened a tweeter playing alone?
Bass is the one is mainly controled, because it is the highest level you have in music..the bass triggers and the E/I hell limiter controls...so.... you limit the level and if you insist increasing volume, only the treble will increase.... and they will increase because you are bellow the bass level..then they will be both limited and distorting.
So, do not come with this kind of conversation inside the uncle Charlie thread or i will eat twice, and drink twice, this nigth, having enomous pizza and a lot of beers and will let YOU pay the bill alone... even if you have not eated and drinked nothing.... punishment to you...to pay the bill because have talked too much, and grounded!
AGC works different,sometimes a little bit better..from output to input and a fet in the input draining to ground... another circuit, a digital one, with hold an release, a supersonic circuit, may help and sound less harmfull.
This controls the bass tone already played, or while playing.
Ahahahahah!
How little Sakis and Maria are doing?
regards,
Carlos
But my amplifiers are not for this purpose as you know, they are high end, so, it is not a good idea to destroy the audio quality because of powerholic needs, at least with my amplifiers.
I use to suggest people, when i see they are power maniacs, to go to other threads,to try something from ESP... this is to avoid them modifying my amplifiers to produce noises.... also big ammount of power..and noises too.
Why noises?.... when you have bass controled in level, and only treble increases..them, i feel that as noises...more noise than sound, as it is noisy and unballanced..too much treble is really noisy..have listened a tweeter playing alone?
Bass is the one is mainly controled, because it is the highest level you have in music..the bass triggers and the E/I hell limiter controls...so.... you limit the level and if you insist increasing volume, only the treble will increase.... and they will increase because you are bellow the bass level..then they will be both limited and distorting.
So, do not come with this kind of conversation inside the uncle Charlie thread or i will eat twice, and drink twice, this nigth, having enomous pizza and a lot of beers and will let YOU pay the bill alone... even if you have not eated and drinked nothing.... punishment to you...to pay the bill because have talked too much, and grounded!
AGC works different,sometimes a little bit better..from output to input and a fet in the input draining to ground... another circuit, a digital one, with hold an release, a supersonic circuit, may help and sound less harmfull.
This controls the bass tone already played, or while playing.
Ahahahahah!
How little Sakis and Maria are doing?
regards,
Carlos
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then we agree uncle Charly no problems ...
the only cure i have seen to preserve both good sonics and sound and safety is overdesign ...that is rule number one NOOOOOO in PA productions ...it has to be cost effective
i will stay arround .... your thread is one of the most interesting in the forum through the posts and your explanations regarding DX amplifiers we .... humble PA people learn a lot of things from the above and your very usefull coments and advice
thank you uncle charly
( maria is doing very fine the baby is also very fine ...keeps smiling all the time ( reasonable i think .... he listens music from a very nice amplifier !!!! ) and after all the baby has a name now ...he is called philios ...something like PHIL in english )
happy regards
the only cure i have seen to preserve both good sonics and sound and safety is overdesign ...that is rule number one NOOOOOO in PA productions ...it has to be cost effective
i will stay arround .... your thread is one of the most interesting in the forum through the posts and your explanations regarding DX amplifiers we .... humble PA people learn a lot of things from the above and your very usefull coments and advice
thank you uncle charly
( maria is doing very fine the baby is also very fine ...keeps smiling all the time ( reasonable i think .... he listens music from a very nice amplifier !!!! ) and after all the baby has a name now ...he is called philios ...something like PHIL in english )
happy regards
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Philios, yes, i hnow the pronounce, Fílios in my language
I would like to learn Greek...i am watching Greek speaking movies, and i like the sonics and people culture too.
When we talk about our sons, in portuguese, we say "filhos" (sons), and this is near your son name...... also in portuguese (from Brazil only) we say "too much" meaning tomato, or tomate.
Yes!....there are some E/I limiters, so well adjusted they are...... the sonic interference is not so big...some designers adjust it to avoid clipping only, not to protect output transistors. (see Jan Dupont amplifier)
Well..... this is not "my beach".... this is not something i like....E/I limiters...here, was used to produce cheap and bad amplifiers.
regards,
Karolus
I would like to learn Greek...i am watching Greek speaking movies, and i like the sonics and people culture too.
When we talk about our sons, in portuguese, we say "filhos" (sons), and this is near your son name...... also in portuguese (from Brazil only) we say "too much" meaning tomato, or tomate.
Yes!....there are some E/I limiters, so well adjusted they are...... the sonic interference is not so big...some designers adjust it to avoid clipping only, not to protect output transistors. (see Jan Dupont amplifier)
Well..... this is not "my beach".... this is not something i like....E/I limiters...here, was used to produce cheap and bad amplifiers.
regards,
Karolus
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