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Old August 17th 04, 07:05 PM posted to uk.rec.audio
Jem Raid
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Posts: 58
Default Cheap and cheerful upgrade


"Pooh Bear" wrote in message
...
Jem Raid wrote:

Then make your own amplifier;
http://gainclone.com/phpBB2/viewforum.php?f=2
The Gainclone is a 47 Labs Gaincard which costs anything from £1800 for

the
Shigaraki to £4600 for the full Gaincard.

You can make a Shigaraki for about £40 to £50, honestly, no kidding,

it's
true :-) And then later make a dual power supply to take it up to

Gaincard
standard, if you need to :-) The circuit is so simple it's almost a

joke,
consists of 9 components and has the shortest signal path of any

amplifier.
It sounds great. Ask the blokes on the forum and they'll help you,

they're a
wonderful bunch of people.


Based on an IC from National Semiconductor !

"The LM3875 is a high-performance audio power amplifier capable of

delivering
56W of continuous average power to an 8 load with 0.1% THD+N from 20Hz to

20kHz"

http://www.national.com/pf/LM/LM3875.html

Hardly groundbreaking performance !


Graham.


Dear Graham,

Of course you're quite right looking at the bare spec that's what it is, I
felt exactly the same and when I saw the circuit diagram I thought, 'they
cannot be serious' :-)

I made one from from odds and ends just to try it, and ended up buying the
few more components needed to make a proper job of it.

I can only say, let your curiosity try it, read everything you can about it
and then be surprised and delighted at the sound of your own efforts.

Typing Gaincard and Gainclone into Google will return heaps of reviews,
information and links to friendly forums and helpful builders.

Jem