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Old 26th December 2013, 06:25 AM   #3311
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PERFECT !!!

OS
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Old 5th January 2014, 03:53 AM   #3312
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Default My DIY effort

Hi,
I'm a student in electrical engineering from Quebec, Canada and a few weeks ago, I completed these two projects. The first one is a F-5 from Nelson Pass. That wasn't that difficult given that the building guide on DiyAudio is pretty clear and easy to follow.
The second project is unique. It is a full function multichannel preamp. It has 4 input. A phono stage with enhanced RIAA curve. There is a Baxandall 3-band EQ for bass, mid range and treble adjustments. One input buffer (ne5532) and one output buffer. The output buffer is basically the B1 buffer by Nelson Pass. The input is selected by a rotary switch that activate relays. I also made the variable PSU that can goes from +/- 1.5 V to 37 V (1.5A). It is a typical circuit with just few changes(it has a very good ripple rejection of around 80 dB)...
The two PCBs has been conceived by me and everything is working fine.
The amplifier sound fantastic!!! =P
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Old 6th January 2014, 10:12 PM   #3313
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Hi: That is certainly something to be proud of!...Great design and workmanship,The blue lighting effect is awesome

Regards
Bob C.
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Old 6th January 2014, 11:38 PM   #3314
AVWERK is offline AVWERK  United States
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Very nice and clean Mass!
2 thumbs up!

Regards
David
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Old 6th January 2014, 11:55 PM   #3315
Bigun is offline Bigun  Canada
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Quote:
Originally Posted by BobEllis View Post
Another Honey Badger is alive.
nice socks
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Old 18th January 2014, 05:12 AM   #3316
Aniket is offline Aniket  India
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Default 250W+250W integrated amp

Hi,

some pics of my new build. a 250+250W @4 ohm integrated amp, the main amp was designed by myself, PCB's designed by AlexMM, a simple soft start designed by me, protection based on Rod Elliott's design and the preamp based on Elliott's P97 preamp. Sounds fantastic. Bass punches in the chest with such an authority over the cone movement. Chassis is made at local sheet metal shop using 1.5mm steel.

Cheers!!!!
Aniket
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Old 20th January 2014, 12:09 PM   #3317
Teti is offline Teti  United Kingdom
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Mighty beast almost finished, silver plated badges still to come.:banana:

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Old 20th January 2014, 12:50 PM   #3318
Marra is online now Marra  United Kingdom
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Lovely work Teti.
Any internal shots?
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Old 20th January 2014, 12:52 PM   #3319
Teti is offline Teti  United Kingdom
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Thanks mate, I will get to it eventually. They standing on my DIY isolation base. Each amp 13.5 kg, isolation base 47kg
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Old 20th January 2014, 12:57 PM   #3320
Marra is online now Marra  United Kingdom
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Solid then
Just found your thread om pfm.

Last edited by Marra; 20th January 2014 at 01:01 PM.
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