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Old 29th January 2009, 01:40 PM   #691
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Yes, very nice!

How did you make the case and how thick is it? Are the power transformers mounted to the front panel?
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Old 29th January 2009, 04:21 PM   #692
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Btw what are the output transistors?
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Old 29th January 2009, 07:49 PM   #693
wg_ski is offline wg_ski  United States
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Case is made the same way all of mine are. 0.125 or 0.090 sheet aluminum stock, cut into panels. Bolted together with angle aluminum. This particular series used a perfab 3U steel rack panel for the fronts - and yes, the trafos are bolted to the front panel.

Output trannies are the MJ21193/4. There's a total of 20 plus drivers. There are two heat sinks stacked on top of one another, with the 4" 105CFM fan blowing through them. Exhaust holes are in the top of the case. The circuit is posted in the "700 watt amplifier" thread, which is buried somewhere by now, and brought up again recently when another member got interested in Project 117. As you can see, this similar amp is finished and has been working in the field for some time.
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Old 6th February 2009, 12:19 PM   #694
tmyr is offline tmyr  Greece
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Default The "Dimitra" Amplifier...

Hallo to everybody !
..this is my realization of a PtP n-hexfet stereo amp ("The Saint" 's design.. thanks man.!) with 1 pair of industrial 60Amp peak current fets & ecc83 triode buffer per channel, @ +/-33v rails, fused protection, soft start delay, descrete geared attenuator pots, a balance pot (hi-fi style) & 6 input selector+rec out, hand made to the bone.
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Old 6th February 2009, 12:25 PM   #695
tmyr is offline tmyr  Greece
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..some more fotos ..
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Old 6th February 2009, 12:46 PM   #696
tmyr is offline tmyr  Greece
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just one attacment per post limit here..
..back side..
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Old 6th February 2009, 12:49 PM   #697
tmyr is offline tmyr  Greece
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..up close detail..
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Old 6th February 2009, 12:59 PM   #698
tmyr is offline tmyr  Greece
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..and the all favorite 'top cover missing' foto..
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Old 6th February 2009, 01:03 PM   #699
tmyr is offline tmyr  Greece
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..ok just one more.. the one i call 'train engine'..
..it sounds great .. the detail through my diy ecl's is spectacular, sweet, tube like sound & distortion at hi levels, no hot spots inside so ventilation holes ,no pcb except for holding the caps & rectifiers...
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Old 6th February 2009, 01:07 PM   #700
Bonsai is offline Bonsai  Taiwan
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tmyr,

that is one cool looking amp! congratulations!

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Amplifier Design and Construction for MUSIC! http://hifisonix.com/
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