carlosfm said:
ATC speakers are very reputed.
I've heard those on the AudioShow singin' like a kitchen radio (no kidding!), connected to a miserable system and with a placement in room like if they were some piece of furniture.
Seriously, there is too many incompetence out there on the distributors.
Some guys are selling hi-fi today, yesterday they were selling lingerie on a shopping mall.
LOL 😀 😀
The distributor is my friend! ( http://www.exaudio.net/ )
You heard in a small room on the top floors?
He was in a small room with a pair of Active 20 , other pair of big speaker and a TV projector.
carlosfm said:
Great, prepare yourself to blow the chip and spend another 4.5€.😉
LOL 😀
I hope not to be as bad as you think I am! LOL 😀 😀 😛
I will use big heatsinks becouse of the voltage 😉
In a few days when I start to test it, I think I will send you some e-mails... hope that you don't mind
Carlos,
what is the best part of the snubber network, I mean most effective...the 1 Ohm + 470nF polyester capacitor?
I use small caps, 470nF polyester, and small resistors, 4k7, anyway on all my power amp. power supplies. I only never use caps. on the rectifier diodes. Is this very important or just minor?
For the Hypex modules it is not needed from what I understood.
Thanx for all your valuable web talk and diy ideas you give people like me.
what is the best part of the snubber network, I mean most effective...the 1 Ohm + 470nF polyester capacitor?
I use small caps, 470nF polyester, and small resistors, 4k7, anyway on all my power amp. power supplies. I only never use caps. on the rectifier diodes. Is this very important or just minor?
For the Hypex modules it is not needed from what I understood.
Thanx for all your valuable web talk and diy ideas you give people like me.
Bgt said:
Sorry, i don't understand the question, are you using 1R+470nf instead of the recommended 1R+100nf on the PSU?
Bgt said:
I don't use them.
Fast diodes don't need them.
sub
Is the 549 better than the 541? I have both.😀
Someone have a tip for where i sould buy an 24v+24v trafo to an sub??
btw. Hallo ja Marius. Prøver å lære litt.. bygge meg sub nå!
PK.
carlosfm said:
No, I used two paralleled OPA549 chips.
Is the 549 better than the 541? I have both.😀
Someone have a tip for where i sould buy an 24v+24v trafo to an sub??
btw. Hallo ja Marius. Prøver å lære litt.. bygge meg sub nå!
PK.
well, pk down the datasheets, and you'l see..
for sub duty i would just use the one with the most power really.
i dont think other parameters are to important, both chips have, in general, fairly high sound quality capability.
oh, and most important, lots and lots of capacitans. i would suggest no less than 20.000uf per rail, a total of 40kuf.
good luck on your sub, what driver are you using?
for sub duty i would just use the one with the most power really.
i dont think other parameters are to important, both chips have, in general, fairly high sound quality capability.
oh, and most important, lots and lots of capacitans. i would suggest no less than 20.000uf per rail, a total of 40kuf.
good luck on your sub, what driver are you using?
Carlos, I dont use this snubber right now but I want to if it makes a difference.
Up till now I've always used a 470nF cap. parallel to the 10.000uF cap. and a 4k7 resistor parallel to the 10.000 uF cap.
The question is: does adding this 1R+100nF make a difference?
Es14
Hi Tor!😎
Great to know you are happy with them, at least I'm not alone here...
Those are speakers for a lifetime, they don't do'em like that anymore.
Out of curiosity, I bought my ES11 on a local distributor, my friend.
The guy that sold mine bought a pair o Rega Jura floorstanders.
He wanted floorstanders, just for the sake of it.
It's fancy these days.
The Juras are not bad speakers, but what a downgrade!
No, they don't need a sub, the ES11s don't need it too.
I wanted to make a sub, and I did it.🙂
It was raining outside... slow days, you know...
Tor M said:
Hi Tor!😎
Great to know you are happy with them, at least I'm not alone here...
Those are speakers for a lifetime, they don't do'em like that anymore.
Out of curiosity, I bought my ES11 on a local distributor, my friend.
The guy that sold mine bought a pair o Rega Jura floorstanders.
He wanted floorstanders, just for the sake of it.
It's fancy these days.
The Juras are not bad speakers, but what a downgrade!
Tor M said:
No, they don't need a sub, the ES11s don't need it too.
I wanted to make a sub, and I did it.🙂
It was raining outside... slow days, you know...
Re: Es14
Do they produce clean waves at 20Hz at full volume?
How about 10Hz?
No?
But then most subs don't either.
My TL's may not be perfect but they do something that changes the minds of people who THINK they have low bass.
The problem is that the room, in fact whole property, joins in with various resonances. For example the window above the front door 15 metres away, across the hall down the stairs and up the corridor, rattles at 30Hz so severely that it's about as loud as the loudspeakers. It a nuisance and there are many like that adding up to severe colouration, masking the music and many of the changes I make to try and improve the CDP, etc.
At 10Hz the listening room floor and ceiling oscillate in harmony making the ceiling lamp jump and rattle.
Of course one only feels the bass at that frequency but it's part of the music / sound recording, when present, so should be reproduced by the monitoring equipment. No small speakers can do this full range.
Do they produce clean waves at 20Hz at full volume?
How about 10Hz?
No?
But then most subs don't either.
My TL's may not be perfect but they do something that changes the minds of people who THINK they have low bass.
The problem is that the room, in fact whole property, joins in with various resonances. For example the window above the front door 15 metres away, across the hall down the stairs and up the corridor, rattles at 30Hz so severely that it's about as loud as the loudspeakers. It a nuisance and there are many like that adding up to severe colouration, masking the music and many of the changes I make to try and improve the CDP, etc.
At 10Hz the listening room floor and ceiling oscillate in harmony making the ceiling lamp jump and rattle.
Of course one only feels the bass at that frequency but it's part of the music / sound recording, when present, so should be reproduced by the monitoring equipment. No small speakers can do this full range.
haha, the front door of my student house resonated violently at 22hz iirc, it made a right rattle! I could only make it do that with tones tho, not real music I don't think!
Gain.
What gain is recomended on tha opa549 and 541?
I'm using two paralleled. is it up to 10x? or are 5 betther, or dosen't it matther?
What gain is recomended on tha opa549 and 541?
I'm using two paralleled. is it up to 10x? or are 5 betther, or dosen't it matther?
demogorgon said:
I cant find the maximum power for the opa549 in the datasheets, you know? The 541 has a max 125W.
Do i really need so much capacitans??
Re: Re: Es14
That's not clean bass.
That's car audio field, that's listening inside the box.
I once saw a back window flying out of a car in an SPL contest.😱
I don't like to listen to music that way.
You simply don't have the right conditions for that.
Anyway, my sub has (simulated) -6db at 20Hz.
In-room it will be more, of course.
But most of the times it is disconnected, as it's not vital for my room, speakers an system.
There's dynamics aplenty without the sub.
The sub only makes it even more impressive, as it is well integrated.
I would live without it, anyway.
IanAS said:
That's not clean bass.
That's car audio field, that's listening inside the box.
I once saw a back window flying out of a car in an SPL contest.😱
I don't like to listen to music that way.
You simply don't have the right conditions for that.
Anyway, my sub has (simulated) -6db at 20Hz.
In-room it will be more, of course.
But most of the times it is disconnected, as it's not vital for my room, speakers an system.
There's dynamics aplenty without the sub.
The sub only makes it even more impressive, as it is well integrated.
I would live without it, anyway.
It's a very personal thing I reckon whether you need low bass or not. I am a fan. Some music is a bit lacking without the extra octave or two. With simple acoustic parts it's vital because it provides the 'hall effect' which makes it feel far more like you're at the venue. Standmount speakers will NOT provide that!!
Ironically, in my system electronic and dance music is what benefits least... it really doesn't need the confusion that even a decent sub adds to such work. It sounds best cut off, like in clubs... Unless you're listening quietly. Of course this doesn't apply to well recorded music, which always seems to benefit.
Ironically, in my system electronic and dance music is what benefits least... it really doesn't need the confusion that even a decent sub adds to such work. It sounds best cut off, like in clubs... Unless you're listening quietly. Of course this doesn't apply to well recorded music, which always seems to benefit.
Trying to be a little more on-topic... I was recently very surprised by just how much things up from the power amp ie. pre-amp and source can affect the dynamics, particularly in the bass. I find it astonishing what a good op-amp I/V and half-decent pre-amp can do.
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