Destroyer x Amplifier...Dx amp...my amplifier

[norazmi]

Yes, its read 0.817Kohm...

Originally posted by destroyer X

Check this please.

regards,

Carlos

[norazmi]

Its BD139 i`ll check it again the connection.... Thanks alot DX...


Regards.
Azmi

Originally posted by destroyer X

or wire side, to check.

regards,

Carlos

[destroyer X]

Clean it to see shorts..otherwise will be difficult.

regards,

Carlos

[norazmi]

Clean it up, not short.

Here is bottom view of the bias.

http://60.48.69.81:90/~azmi/bias2.JPG

Originally posted by destroyer X

Clean it to see shorts..otherwise will be difficult.

regards,

Carlos

[destroyer X]

Continue working ....because something is wrong.

BUT..install ouput transistors..heatsinks..insulate the ones to the heatsink..install protective resistances in series with plus and minus and check once again.

If not perfect..then continue, because for sure there are errors or defective parts.

Amplifier was tested hundred times..works fine and stable.

relax, work hard....and be happy.

Congratulations!..now you are very near to be happy listening a Dx Corporation nice amplifier.

regards,

Carlos

[destroyer X]

is installed too...fine!

regards,

Carlos

[norazmi]

Hi DX,

Yes its installed , now i`m checking parts one by one, i want to make sure i can have dx amp it very sure its great amp.

Check tip 41c ... ok
42c ... ok
bd139 ... ok

2n5401 both ... ok

now i`m checking all resistor to make sure it has right value and also my board if got any short

Thanks a lot DX being help me all day i`m happy with it.

continue work... i`ll report here if i got any update.

Regards.
Azmi

Originally posted by destroyer X

is installed too...fine!

regards,

Carlos

[destroyer X]

So....you go working in your amplifier and old uncle will work into his own amplifier.

The transformer is beeing made once again... the new one will come with 110 and 220 inputs... you see there's no transformer inside..for a while only.

Go searching...soon you will find.

regards,

Carlos

[EMX_125]

DHR Turbo...


Hi... Sir Carlos thanks for your rEply..... You Means the DHR is Better t0 Use Mid Fequency ?
Because y0u said the high frequency and also some mid range
frequency ( voices ) I have a sound system But im not a satisfied my amp to drive a Subwoofer my amp is BOM PO3 p0wer Amplifier 2 fairs
of 2SA1301 and 2SC3280 a channel... s0 i need a s0me more power amp to drive a subwoofer....

[destroyer X]

To use it only for bass you will be loosing, wasting, trowing out, a lot of good quality audio.

Was not made for bass..it is not a subwoofer amplifier.

The use of this amplifier, only for bass is a bad use...it is alike to use a good, modern, confortable and expensive car, alike a Mercedes Benz or a BMW, to transport stones, bricks and sand for home construction..... to construct buidings we use truck.

The soft suspension you have into a Mercedes Benz, the low internal noise you have into a BMW and leather seats will be damage doing such kind of job...all those features will be lost when doing such kind of work.

You need a dedicated amplifier..something made for bass only.

It is better to modify your own amplifier, the one you have, for bass reproduction, including more output pairs , increasing supply voltage, increasing the speaker output impedance including more speakers into the system.

The bass amplifier is a result of a design that used other kind of decisions while creating it..... DHR Turbo, and other amplifiers i have made, had not the needed decisions during creation stages to be used as a bass amplifier.

Much better than increase amplifier power is to increase system's efficiency...good speakers together good speaker enclosures can produce deep, nice and strong bass with 30 watts or less...so... the need of high power, enormous transformers, a lot of output transistors is a need when we have NO efficient speakers... the bad ones needs a lot of power to move.

The reason we have so many high powered amplifiers (more than 50 watts RMS in my subjective point of view) is because the enormous majority of speakers you find are not good.

Real good speakers reach maximum excursion (compliance) into the diafragm with 5 volts.....so... those ones, with something alike 3 watts will do the job.... and better than a thousand watts amplifier connected to a BAD 1000 watts amplifier.

I really think you should scan our forum.... searching for high powered amplifiers, those ones published as 1 kw or more.... those ones will be more correct to your power needs.

I will not modify my amplifier to subwoofer use, or to bass only use.

The exception is the Trust Bass..but that one is low power and was not tested , only created into simulator... and this means nothing or half of nothing...was not built and listened.

The Trust built and listened and tested was a full range.... all audio bandwidth...not only bass.

Here you have the DHR Turbo thread:



This is the DHR.... Dx High Resolution Turbo