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Old 26th June 2006, 11:10 PM   #21
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Join Date: Feb 2001
Location: Mars
Quote:
Originally posted by agent.5
I can only speak from my experience of the Behringer EP-2500 that I have: I replace the stock fan with a silenx super quiet fan, you can't hear the fan if you are 10 feet away.

The transformer is kind of tiny. So someone can always modify it with huge transformers plus choke input filters.
EP2500 is QSC RMX2450 clone with smaller transformer.

If a new transformer cost 100 bucks or more, you might as well
shop around for the RMX amp on the used market.

That EP2500 should have a variable speed fan, is it
operating at high speed during normal listening before
you did the mod ?
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Old 26th June 2006, 11:10 PM   #22
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Location: UK
Quote:
Originally posted by thylantyr
For instance, my monster PCB layout, 4 layer 28 power
transistor 1kw amp will cost a few thousand just to get
PCB's made to be on the same level as high end audio
with great build quality... So, now you have a monster amp,
cool, but on the same token I can design a audio system using
off the shelf items for much less. If the system speakers
are not ultra demanding, I can use eight $250 proamps for
a 7.1 HT system where each amp is bridged for uber headroom,
$2k cost. Cheaper than my uber amp PCB's, imagine the
heatsink extrusion costs, component costs, chassis, transformer,
yikes.
Quote:
Originally posted by RobWells
Hey Al,

You don't see many diy amps in the 100w+ region. A shame for the bass addicts
There isn't many I agree but here's one and its not bad value for $220AUS per fully constructed channel or $160AUS for the kit and PCB:

http://www.aussieamplifiers.com/av1000.htm

20 output devices and 1kw.
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Old 26th June 2006, 11:12 PM   #23
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Quote:
Originally posted by RobWells
Why not just build them 'ugly' and hide the amps ?

Rob.
Similar to the ugly wife syndrome. You know you have it
because it's cheap but you don't want to be seen with it.


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Old 26th June 2006, 11:14 PM   #24
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Quote:
Originally posted by ShinOBIWAN

There isn't many I agree but here's one and its not bad value for $220AUS per fully constructed channel or $160AUS for the kit and PCB:

http://www.aussieamplifiers.com/av1000.htm

20 output devices and 1kw.
LOL..

I can only explain the LOL in private, send me email ....
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Old 26th June 2006, 11:15 PM   #25
agent.5 is offline agent.5  United States
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Location: San Francisco, CA
Quote:
That EP2500 should have a variable speed fan, is it
operating at high speed during normal listening before
you did the mod ? [/B]


No idea. I mod it the first day that I got it. I hate noice. My computer is fanless and completely silent.

When I first turned on the Behringer, I didn't like the fan noise; so the fan has to go. I used the silenx with the lowest noise one. I talked with Silenx and the fan works at 15V (Behringer fan voltage) when it is spec for a computer (operating at 12V).
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Old 26th June 2006, 11:18 PM   #26
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Quote:
Originally posted by thylantyr


LOL..

I can only explain the LOL in private, send me email ....
Sounds interesting...

But you've disabled your email.

Send us a mail through here.
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Old 26th June 2006, 11:25 PM   #27
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I looked at the aussie amp page, but couldn't work out whether the pre assembled board included power supply. If not then I'm guessing the extra costs would push it above a stereo behringer jobbie....

Rob.

Thylantyr, could you mail me your LOL stuff too..
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Old 26th June 2006, 11:37 PM   #28
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Now you know why I disabled my email. I never finished
my amp project 100%, the final step was to verify by
making a prototype and since this never happened,
it was a lesson learned that it's not ideal to talk about
unfinished stuff on a DIY forum.. or is it ? // ROFL //
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Old 26th June 2006, 11:42 PM   #29
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Quote:
Originally posted by thylantyr
EP2500 is QSC RMX2450 clone with smaller transformer.
I was offered some QSC 3800s the other day at a really good price, but I had to buy them in threes fully racked up.

However, now I've just bought Shin's AV15 I might have to reconsider...
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
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Old 26th June 2006, 11:47 PM   #30
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Al I think we need to setup a hotline....

Rob.
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