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Old 4th October 2013, 11:43 AM   #3261
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Huseying: looks a little like a Tenor amp. Nice use of wood. Good work.
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Old 4th October 2013, 12:52 PM   #3262
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Default FC-100

Gentlemen, let me show you the current progress of my FC-100 (originated by ROENDER) integrated amplifier (shown on the image below).

Everything that you see on this picture has been DIY'ed:

- the FC-100 amplifier -and shunt - PCBs (PCB layouts done by myself)
- the passive versatile, comfortable VCPre pre-amplifier, being based upon LDRs (PCB layout done by myself)
- Soft-Power-On and Speaker Protection (PCB layout done by myself)
- the aluminium case itself (with a little bit help of my friends)
- the wooden front (with a little bit help of my friends)

This is a true integrated amplifier and it sounds like a gem.

But it has been a long way to get until there and cost a lot of blood, sweat and tears.

For example: the AK - PCB power connector (indicated by the left pink arrow) is real "Schrott" (rubbish) in my eyes.
Without noticing you will break the connection between the screw on top of the case and its solder pin, if you tighten it too much.

Even a small BOURNS potentiometer (indicated by the pink arrow on the right side) will loose and change its contact, once you will move your case a little bit.
Do you imagine, what it means, if this trimm-pot is involved in adjusting the bias current?
It will cause some serious thermal runaway - problems that you are not aware of, once you have moved / pushed the amplifier's case.

It is the mechanical problems that is paid too little attentiom in this forum and that will cost much "Blood, Sweat and Tears" to any un-experienced DIYer.

Best regards - Rudi_Ratlos
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Last edited by Rudi_Ratlos; 4th October 2013 at 12:55 PM.
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Old 4th October 2013, 01:07 PM   #3263
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Thank you mhouston, it was a dead walnut tree on our yard
yes you right twister looks a bit like tenor and upside like consonance opera cd player.
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Old 11th October 2013, 05:41 PM   #3264
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New build of my AV400 amp.
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Old 12th October 2013, 11:03 AM   #3265
PauloPT is offline PauloPT  Portugal
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My SKA GB150D built with Jim's Audio pcbs:

Amp pcb's: Jim's Audio
Power Supply: HackerCap
Softstart: Sjostrom Audio
Speaker Protection: some kit from eBay
Transformers: 2 x300VA 35-0-35V
Attached Images
File Type: jpg IMGP8555.JPG (222.5 KB, 1606 views)
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File Type: jpg IMGP8528.JPG (178.4 KB, 224 views)
File Type: jpg IMGP8529.JPG (314.2 KB, 336 views)
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Last edited by PauloPT; 12th October 2013 at 11:15 AM.
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Old 12th October 2013, 12:04 PM   #3266
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Hi Paulo,

Nice work.. Now you owe us feedback on the SYMEF thread.

kind regards,

Harrison.

Quote:
Originally Posted by PauloPT View Post
My SKA GB150D built with Jim's Audio pcbs:

Amp pcb's: Jim's Audio
Power Supply: HackerCap
Softstart: Sjostrom Audio
Speaker Protection: some kit from eBay
Transformers: 2 x300VA 35-0-35V
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Old 12th October 2013, 11:16 PM   #3267
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Quote:
Originally Posted by PauloPT View Post
My SKA GB150D built with Jim's Audio pcbs:

Amp pcb's: Jim's Audio
Power Supply: HackerCap
Softstart: Sjostrom Audio
Speaker Protection: some kit from eBay
Transformers: 2 x300VA 35-0-35V
Very neat build, good work.
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Old 17th October 2013, 03:43 PM   #3268
pe1mmk is offline pe1mmk  Netherlands
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Great to see all these nice photos of your work, Compliments!!!

Here one of my work:

New DML units we developed and made available for all Luxman Owners:
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Old 19th October 2013, 11:28 AM   #3269
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AX6 in action APEX AX6 by TDA - Scorpions - YouTube
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Old 23rd October 2013, 05:00 PM   #3270
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усь по классической схемотехнике
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