Having visited this site for months, i deciced to obtain some samples and have a go...!!😕
Using an empty cdrw enclosure, a free saturday and some surplus bit's i built this little lot. It's no match for my current amplifier, which is the williams hart 110w mono blocks, but for my work shop it certainly fit's the bill. I don't wish to upset the chip comunity with my opinion on the hart mono's, it's just that they can wipe the floor with most commercially made stuff. Sorry forgot to say that there diy kit's, have a look at Shaun's site. www.williamshart.com
But like i said they sound reasonable for me any way.
A big thanks to Nuuk and Mark.
The images are a bit low res, but i'll post some better ones.🙂
Using an empty cdrw enclosure, a free saturday and some surplus bit's i built this little lot. It's no match for my current amplifier, which is the williams hart 110w mono blocks, but for my work shop it certainly fit's the bill. I don't wish to upset the chip comunity with my opinion on the hart mono's, it's just that they can wipe the floor with most commercially made stuff. Sorry forgot to say that there diy kit's, have a look at Shaun's site. www.williamshart.com
But like i said they sound reasonable for me any way.
A big thanks to Nuuk and Mark.
The images are a bit low res, but i'll post some better ones.🙂
Attachments
Well done Pete. The first symptoms of Gainclone mania will be when you find yourself spending most of your time in the workshop. 😉
http://www.brukthifi.no/cgi-bin/yab...;num=1058825432
http://www.infinite-resolution.com/files/Ronny/
http://www.infinite-resolution.com/files/Ronny/
An externally hosted image should be here but it was not working when we last tested it.
It looks to me like the entire surface of the chips isn't touching the cooling surface (can't really call it a heatsink). You should try cooling them better.
Heat sinking and myst
Thanks guy's,
I will get round to better heatsinking. Thats just testing phase, as it was running over the weekend and seemed fine.
One thing my wife noticed was the clarity of vocals on this amp, hasn't quite got the low down energy compared with this little beauty🙂 🙂 🙂
Thanks guy's,
I will get round to better heatsinking. Thats just testing phase, as it was running over the weekend and seemed fine.
One thing my wife noticed was the clarity of vocals on this amp, hasn't quite got the low down energy compared with this little beauty🙂 🙂 🙂
Attachments
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Re: Heat sinking and myst
Hi Pete,
I'd never seen a Myst before, apart from pictures in some old hi-fi mags. Must say that I'm impressed with the clean layout and attention to detail on the production line. It also looks amazingly simple - only 7 transistors per channel in the power amp? I'm assuming that the devices on the bottom-left of the power amp PCB are regulators for the preamp?
Don't suppose you have a schematic for it?
Your GainClone is almost as neat - well done!
This could be a bit unfair of me, but those PSU caps look a bit "second hand" to me. It's definately worth trying some Panasonic FC's at some point.
Also, I recognise the input caps - years ago I tried replacing some electrolytic capacitors in the crossovers of my Rogers LS7's - believe it or not, they sounded much worse! I came to the conclusion that the inferior characteristics of the electrolytics were acounted for in the design of the circuit, and using a "more ideal" capacitor simply upset the balance of the design...
But I'd forgotten about them as they're hidden away with all my speaker crossover spares. I hadn't thought of trying them in a GainClone... sounds like a little something for the weekend, then 😉
Cheers,
Mark 😉
pete.a said:
Hi Pete,
I'd never seen a Myst before, apart from pictures in some old hi-fi mags. Must say that I'm impressed with the clean layout and attention to detail on the production line. It also looks amazingly simple - only 7 transistors per channel in the power amp? I'm assuming that the devices on the bottom-left of the power amp PCB are regulators for the preamp?
Don't suppose you have a schematic for it?
Your GainClone is almost as neat - well done!
This could be a bit unfair of me, but those PSU caps look a bit "second hand" to me. It's definately worth trying some Panasonic FC's at some point.
Also, I recognise the input caps - years ago I tried replacing some electrolytic capacitors in the crossovers of my Rogers LS7's - believe it or not, they sounded much worse! I came to the conclusion that the inferior characteristics of the electrolytics were acounted for in the design of the circuit, and using a "more ideal" capacitor simply upset the balance of the design...
But I'd forgotten about them as they're hidden away with all my speaker crossover spares. I hadn't thought of trying them in a GainClone... sounds like a little something for the weekend, then 😉
Cheers,
Mark 😉
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