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View Poll Results: Natural dielectrics (in caps and wire) like silk, paper and cotton sound more natural
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Old 20th August 2009, 02:43 PM   #21
luka is offline luka  Slovenia
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Location: in Slovenia :)
What's your next project?
13.8v high current supply
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Old 20th August 2009, 02:54 PM   #22
geekysuavo is offline geekysuavo  United States
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mine is a dual-tracking jung 2000 super regulator with improved (crosses fingers) noise reduction and boosted current output for future op-amp and dual-supply projects.

~ brad.
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Old 20th August 2009, 03:01 PM   #23
syn08 is offline syn08  Canada
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Join Date: Aug 2005
Location: Toronto
Default Control unit

Being bored of designing large boards with all the required analog discrete circuitry to control and supervise the amp functions (see the PGP auxilliary circuitry), I have decided to build a fully digital control unit around the latest YAP 2.1 power amp. An Atmega 324P MCU will control and supervise the power up/down sequencing, temperature, output offset, etc... Status is displayed on a LCD graphic 240x60 display (Toshiba T6963C controller).

Hardware (very simple) & software (interrupt driven, not so simple, but it's my specialty ) design is completed, now looking after an AVR Dragon and a STK500 to start development...
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Old 20th August 2009, 03:38 PM   #24
chris661 is offline chris661  United Kingdom
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Location: Sheffield
Upgrading of current amplifier (bigger PSU, making it bridgeable etc), then ty some Full Range Transmission Lines (FRTLs for short), find a new stylus for my record player, make a pre-amp for it aswell.

Then blow something up.

My work: www.grimshawaudio.com
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Old 20th August 2009, 03:44 PM   #25
Kip is offline Kip  United States
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Location: Sellersville, Pa
Mono block UCD700 amps. I have everything except chassis.
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Old 20th August 2009, 08:07 PM   #26
RE 604 is offline RE 604  Germany
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Location: Germany
Hello ,
my next project is a preamp with three different , switchable phono stages ( D3a , EC8010 and 6021 ) and three switchable , different line stages .
I hope , this will be ready for the next ETF in France .
Regards , Alexander .

Click the image to open in full size.
No reason to get excited : Jimi Hendrix .
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Old 20th August 2009, 08:40 PM   #27
Alistair72 is offline Alistair72  United Kingdom
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Location: NW-UK
Speakers - prolly a fonken of some sort.

But I do fancy a Pass Labs amp of some sort...

Is there an end to this once the bug has taken hold?
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Old 21st August 2009, 02:21 PM   #28
brianco is offline brianco  Ireland
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Location: Scottish Borders - Kelso; on the famous Tweed River!
PASS F5 & B1 looking for a good Pre design and then decide on Phonoclone 3 - PS caps and heatsinks proving difficult to source easily in UK.

Repairs to do:
rebuild Yamamura prototype current amp from early 1990s
realign Perreaux 2150b - 2nd system.

clear up the garage/workshop!
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Old 21st August 2009, 03:06 PM   #29
zebra100 is offline zebra100  United Kingdom
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I voted for other, but I guess I could have voted amp or speakers. My next project will probably be a pair of active full range speakers.

I have a couple of other projects on the go at the moment, including a Class A MOSFET based headphone amp, and some 3 Way floor standers which I need to get done. Once I get these finished, I can get started.

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Old 21st August 2009, 04:34 PM   #30
relder is offline relder  United States
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Location: Tucson, AZ
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An active 3-way speaker with current-source/transconductance configured LM3886/4780 for each driver.

Taking forever at my slow pace.
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