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Old 19th February 2006, 02:58 AM   #1
sachi is offline sachi  United States
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Thumbs up Newbie 7 channel Gainclone complete

Hey all,

I am glad to report that i have finally finished my gainclone projkect customised for my 3 way active speakers.

Taken me 9 months to finish this.

In fact this is a
DIY 7 channel Gainclone amplifier/Active crossover/Passive Preamp

The components in the different stages are...
------------------------------------
Passive Pre Stage
ALPS RK-27 Pot(10 k log Dual Gang)
Phillips Log pot(Center cahnnel)

Active Crossover Stage(From Silicon CHip)
OPA4228 based 4th order Linkwitz Riley

Amplifier Stage
[ Highs - 50watts@8ohms ]-LM3886(Bran GT's board)
[ Mids - 60watts@8ohms ]-LM4780 Parallel mode(Peter's Board)
[ Lows - 140watts@8ohms ]-LM4780 Bridged mode(Arasu's Board)
[ Center channel - 60watts@8 ohms]-OPA541


Thanks to everyone who heped me realise this project...specially Nappylady, Arasuk and Peter Daniel.

Thanks to Arasuk for helping me out and see the project to its completion.
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Old 19th February 2006, 03:00 AM   #2
sachi is offline sachi  United States
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Fins..
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Old 19th February 2006, 03:02 AM   #3
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congrats! thats a pretyy ambitions "newb" project!

lets have some pics of the insides then
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Old 19th February 2006, 03:02 AM   #4
sachi is offline sachi  United States
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Another pic
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Old 19th February 2006, 03:04 AM   #5
sachi is offline sachi  United States
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Desperately need some new Aluminium knobs
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Old 19th February 2006, 03:07 AM   #6
sachi is offline sachi  United States
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With my Active 3 Ways...am a noob to speaker designing too


gonna put it in my listening room once i com back ...leaving to Mysore in an hour..will be back only next weekend.
Active 3 way speaker
--------------
Vifa D27TG-35 (Tweeter)

Scan SPeak 13M/8640(Mids)

Dayton 10 inch Classic(woofer)
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Old 19th February 2006, 03:10 AM   #7
sachi is offline sachi  United States
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Will post the details of the amp when i come back....as u can see..grill cloth is left over..will put thoseon soon..


Thanks guys...DIYaudio.com is great...
Cheers

Sachi
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Old 19th February 2006, 04:16 AM   #8
sachi is offline sachi  United States
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Quote:
Originally posted by neutron7
congrats! thats a pretyy ambitions "newb" project!

lets have some pics of the insides then

Thanks Neutron...will post pics of the insides when i return from Mysore next weekend.
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Old 19th February 2006, 06:09 AM   #9
Leolabs is offline Leolabs  Malaysia
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Old 19th February 2006, 06:36 AM   #10
recca is offline recca  United States
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Nice!

Great project and something I'd like to try later too! How are you controlling volume on all six channels with only one pot?
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