Q: Power Amp Kits

Archived from groups: rec.audio.tech (More info?)

"James Lehman" <james[remove]@akrobiz.com> wrote in message
news:ThOYe.50698$vJ4.5527@tornado.ohiordc.rr.com...
> Hello.
>
> I'm thinking about building my own high powered amps. I'm looking for a
> nice
> kit that puts out a true 200 watts or more into 8 ohms. Any ideas?
>
> Thanks! James. )
>
>
>

I'm not sure such kits are available these days - not enough demand, and too
many legal liability issues.

Occasionally one can find an unbuilt Hafler or Dyna kit on eBay.

Mark Z.

Archived from groups: rec.audio.tech (More info?)

"James Lehman" wrote ...
> I'm thinking about building my own high powered amps.
> I'm looking for a nice kit that puts out a true 200 watts or
> more into 8 ohms. Any ideas?

http://sound.westhost.com/project101.htm
I just got three of the PC boards and am collecting the parts.
Biggest problem will be finding an appropriate power
transformer.

Archived from groups: rec.audio.tech (More info?)

Thanks for the suggestions and the bit of sarcasm. I understand what you are
saying. What amps do you think are inexpensive and good?

The reason I asked the question is because I've been looking at 41hz.com a
lot lately and those amps look pretty neat.

One of the reasons I like AMP3 is because it uses a single 12V supply.
That's easy. Then I looked at more power and I was taken right back to where
I was with this idea many years ago; the big, fat, expensive, power
transformer. So, I just figured, if I'm going to have to build a linear
power supply, I might as well look at any and all other power amp kit
options.

James. )

Archived from groups: rec.audio.tech (More info?)

"Arny Krueger" <arnyk@hotpop.com> wrote in message
news:BoGdnc3f898WCKjeRVn-vg@comcast.com...
> "James Lehman" <james[remove]@akrobiz.com> wrote in message
> news:lGYYe.50930$vJ4.1577@tornado.ohiordc.rr.com
> > Thanks for the suggestions and the bit of sarcasm. I
> > understand what you are saying. What amps do you think
> > are inexpensive and good?
> >
> > The reason I asked the question is because I've been
> > looking at 41hz.com a lot lately and those amps look
> > pretty neat.
>
> That's old technology. Here's something newer:
>
> http://www.adireaudio.com/Home/UcDAmps.htm
>
> > One of the reasons I like AMP3 is because it uses a
> > single 12V supply. That's easy. Then I looked at more
> > power and I was taken right back to where I was with this
> > idea many years ago; the big, fat, expensive, power
> > transformer. So, I just figured, if I'm going to have to
> > build a linear power supply, I might as well look at any
> > and all other power amp kit options.
>
> I've got a Tripath amp that has a similar power rating and
> may be based on the same chip.
>
> It's not all that awe-inspiring to listen to or to test on
> the bench.
>
> One problem with Tripath's technology is their dependence on
> complex, bulky output filter networks. They raise the amp's
> output impedance at the high end of the audio band, and make
> the amp's sound quality extra-dependent on the impedance
> curve of the speaker you're using.
>
>

Also try http://www.williamshart.com/

Many of their designs are by the late (and great) John Lindsey-Hood
and I can personally recommend them.


--
Woody

harrogate2 at ntlworld dot com

Archived from groups: rec.audio.tech (More info?)

"Eiron" <e1ron@hotmail.com> wrote in message
news:3pltnqFart27U1@individual.net...
> harrogate2 wrote:
>
> > Also try http://www.williamshart.com/
> >
> > Many of their designs are by the late (and great) John
Lindsey-Hood
> > and I can personally recommend them.
>
> That's John Linsley Hood.
> I see they are selling his noisy shunt-feedback phono preamp design.
>
> --
> Eiron
>

.... yes but this thread is about <power> amps, so phono amps don't
come into it!


--
Woody

harrogate2 at ntlworld dot com

Archived from groups: rec.audio.tech (More info?)

harrogate2 wrote:
> "Eiron" <e1ron@hotmail.com> wrote in message
> news:3pltnqFart27U1@individual.net...
>
>>harrogate2 wrote:
>>
>>
>>>Also try http://www.williamshart.com/
>>>
>>>Many of their designs are by the late (and great) John
>
> Lindsey-Hood
>
>>>and I can personally recommend them.
>>
>>That's John Linsley Hood.
>>I see they are selling his noisy shunt-feedback phono preamp design.

> ... yes but this thread is about <power> amps, so phono amps don't
> come into it!

But getting his name right does.
And his power amps were jolly good.

--
Eiron

I have no spirit to play with you; your dearth of judgment renders you
tedious - Ben Jonson.