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Old 2nd December 2012, 05:05 PM   #2731
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Default Here you have a Supercharged made by another Brazilian

The plastic film that protects the aluminum panel was not removed.

Panel colour is gray...aluminum gray.

regards,

Carlos
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File Type: jpg Supercharged.jpg (164.9 KB, 1099 views)
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Old 3rd December 2012, 09:30 PM   #2732
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first samples of my latest enclosure ... anodized alou laser etching

enjoy


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Old 3rd December 2012, 09:40 PM   #2733
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@sakis: very professional.
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Old 3rd December 2012, 09:52 PM   #2734
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Thanks Mark sorry that i will not put your amplifier inside my enclosure ....

Eventhough i liked it so much power is very low for my taste .... still a nice amp

Kind regards
sakis
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 4th December 2012, 09:51 AM   #2735
Bonsai is offline Bonsai  Taiwan
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Some pictures of my e-Amp. 180W per channel, but easily delivers 250W into 8 Ohms. There is a full write up and circuits etc on my website for those that have not seen it yet. Weighs about 30 kg's.

The other amp in the pics is my original Ovation 250 - there are some more pics of that one near the begining of this thread (2nd page I think).

As always, fully balanced design!
Attached Images
File Type: jpg e-amp1.jpg (70.3 KB, 330 views)
File Type: jpg e-amp2.jpg (61.1 KB, 393 views)
File Type: jpg e-amp3.jpg (92.2 KB, 414 views)
File Type: jpg e-amp4.jpg (89.5 KB, 599 views)
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Last edited by Bonsai; 4th December 2012 at 09:54 AM.
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Old 4th December 2012, 10:17 AM   #2736
Bonsai is offline Bonsai  Taiwan
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A last few internal shots
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File Type: jpg e-amp5.JPG (157.0 KB, 598 views)
File Type: jpg e-amp6.JPG (142.9 KB, 363 views)
File Type: jpg e-amp7.JPG (144.3 KB, 316 views)
File Type: jpg e-amp8.JPG (95.3 KB, 325 views)
File Type: jpg e-Amp9.JPG (49.9 KB, 340 views)
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Old 4th December 2012, 12:14 PM   #2737
redjr is offline redjr  United States
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Quote:
Originally Posted by Bonsai View Post
Some pictures of my e-Amp. 180W per channel, but easily delivers 250W into 8 Ohms. There is a full write up and circuits etc on my website for those that have not seen it yet. Weighs about 30 kg's.

The other amp in the pics is my original Ovation 250 - there are some more pics of that one near the begining of this thread (2nd page I think).

As always, fully balanced design!
Very impressive looking Bonsai.
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Old 5th December 2012, 01:05 AM   #2738
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Quote:
Originally Posted by Bonsai View Post
Some pictures of my e-Amp. 180W per channel, but easily delivers 250W into 8 Ohms. There is a full write up and circuits etc on my website for those that have not seen it yet. Weighs about 30 kg's.

The other amp in the pics is my original Ovation 250 - there are some more pics of that one near the begining of this thread (2nd page I think).

As always, fully balanced design!
Wow, that is a very "strong" power supply, no wonder it can deliver 250 watts easily!!! Very nice

PS: Ten transistors per channel?

Last edited by lanchile; 5th December 2012 at 01:07 AM.
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Old 5th December 2012, 01:56 AM   #2739
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Quote:
Originally Posted by sakis View Post
first samples of my latest enclosure ... anodized alou laser etching
enjoy
...
Nice one Sakis!
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Old 5th December 2012, 05:42 AM   #2740
Bonsai is offline Bonsai  Taiwan
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Quote:
Originally Posted by lanchile View Post
Wow, that is a very "strong" power supply, no wonder it can deliver 250 watts easily!!! Very nice

PS: Ten transistors per channel?
Yes - 10 transistors per channel. Its rated at 180W because thats where the distortion is at about 10ppm at 20 kHz. I will do another big amp again, rated for 250 W but would go for 16 outputs per channel. Probably stick exaclty with the e-Amp formula but just beef up the output stage. Kinda like the Spitfire story - just keep on improving it. The next amp will add jumper selectable MIC to the MC and TMC the current e-Amp design has.

The transformer is rated for 1kVA. The older Ovation 250 transformer is rated at 2kVA :-0. That delivers 500W per channel into 4 Ohms. I never had the guts to try it on a 2 ohm load - it also used 10 trannies per channel which is not quite enough in my view for something that big. I noticed that the new Moon top of the range amp, rated at 800W per chan into 8 ohms uses 32 outputs per channel.

That said, the e-Amp does sound awesome - fast, punchy and very clean. I am very happy with it.

BUT first: I will complete my new pre-amp with tone controls. Big, expensive project!

Thanks for the comments redjr! Appreciate it.
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Last edited by Bonsai; 5th December 2012 at 05:45 AM.
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