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Old 17th May 2005, 05:07 PM   #1
t. is offline t.  United Kingdom
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Default T-Amp or 41HZ Amp3

Hi guys,

I'm interested in trying out one of the little class D amps.
Any advice which one sounds best? modded T-Amp or 41HZ Amp3

Cheers
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Old 18th May 2005, 12:11 AM   #2
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The AMP3 has a bit more power than the Sonic Impact amp. I've yet to get my AMP3 assembled (damn SMD crap), but it SHOULD sound better because it uses better parts. Higher capacity caps, toroids instead of the crappy stock inductors on the SI amp, etc should add up to a better sounding amp. How different the chips are is beyond me though. The SI amp uses the 2024 and the AMP3 uses the 2021. I will say though, that the AMP3 PCB is much higher quality. It's much thicker and the traces are better. I'll have to do a comparison when I finally get my AMP3 completely assembled.
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Old 18th May 2005, 03:46 AM   #3
Wayne1 is offline Wayne1  United States
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I have built amps with the Tripath 2024 evaluation board and the 41Hz Amp 3 board.

Personally, I prefer the 41Hz board by a wide margin.

I posted my comparison on the 41Hz website. Just take a look through the forum section on the AMP 3.

www.41hz.com
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Old 18th May 2005, 06:32 AM   #4
t. is offline t.  United Kingdom
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Thanks guys
I'll try the Amp3 out then, can't wait to listen to one of these things.
They seem to get good write ups and for the price are certainly worth a go
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Old 18th May 2005, 07:08 PM   #5
dmigo is offline dmigo  Taiwan
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I am very interested in 41Hz amps. Just cannot decide which one to go, Amp1 or Amp3, because the power of Amp3 seems not enough for my 87dB 1W/1m speakers. I am wondering if I can use two Amp3s for bi-wiring? Anyone out there has experience of Amp1? How dose it sound?Any input would be appreciated.
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Old 18th May 2005, 07:08 PM   #6
dmigo is offline dmigo  Taiwan
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Sorry, I mean biamp configuration.
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Old 19th May 2005, 12:02 AM   #7
Wayne1 is offline Wayne1  United States
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Amp 3 can be powered from a single SLA 12 volt battery.

Amp 1 needs + & - 30 VDC and 5 volts DC.

The power supply for Amp 1 will take quite a bit more money to build. I have one of the Amp 1 boards completed and I just received a case to mount it in.

Getting all the power supply parts will take me a bit more time.

If you can handle the SMT parts and chips, a pair of Amp 3s should be able to power your speakers, if you do not have too big a room.

I ran a single Amp 3 board on my 3 way 88 dB Scan-Speak driver speaker sytem in my small office with no trouble.
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Old 19th May 2005, 12:49 AM   #8
mb is offline mb
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I fully second Wayne's comments on the Amp3. It's better than the T-amp by quite a margin, and there are some components on the T-amp pcb that are not amenable to upgrade, eg. the poor quality inductors, the single supply cap, etc.

My Amp3 on SLA sounds like it has 4x the oomph of the T-amp on the same battery. I suspect that with a good ~14V supply I will get even more headroom. I'm driving infamously difficult Gales 401As (~84dB/W) that have good bass to 30+ Hz, and it's easy to hear the difference in quality betw the Amp3 and (modded) T-amp. Be prepared for patient and careful smd soldering though.
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Old 19th May 2005, 12:24 PM   #9
locky is offline locky  United Kingdom
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I have ordered the AMP 1 from 41hz as I wanted the extra power to drive 85db speakers. However, I am confused about the power supply required. Can anyone explain to a beginner what is needed for the +-30V supply? ie. Can I get hold of an external power supply/transformer or does something need to be constructed - if so what? and any idea where parts etc... can be sourced from in the UK?
Many Thanks!
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Old 19th May 2005, 03:04 PM   #10
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Quote:
Originally posted by locky
I have ordered the AMP 1 from 41hz as I wanted the extra power to drive 85db speakers. However, I am confused about the power supply required. Can anyone explain to a beginner what is needed for the +-30V supply? ie. Can I get hold of an external power supply/transformer or does something need to be constructed - if so what? and any idea where parts etc... can be sourced from in the UK?
Many Thanks!

Take a look at:

http://www.41hz.com/Forums/forum.asp...=0&whichpage=2

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