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Old 11th July 2009, 07:17 AM   #2661
EUVL is offline EUVL  Europe
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Peter,

Did you try the LC Audio circuit ?

http://www.lcaudio.com/index.php?page=8


Patrick
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Old 11th July 2009, 10:36 AM   #2662
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Default New Phono Parts list

Peter-
Re: your new phono circuit - any chance you could post the parts list (and/or schematic) so we can start sourcing parts for this unit while the PCB is underway?
Best regards,
Mike
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Old 11th July 2009, 07:58 PM   #2663
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Drop me an e-mail and I will get you the schematic, I'm reluctant to post it here.

Quote:
Originally posted by EUVL
Did you try the LC Audio circuit ?
Didn't even see that one.
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Old 12th July 2009, 04:09 AM   #2664
EUVL is offline EUVL  Europe
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Why I asked ?

See how they use the AD844 in open loop.
AD844 in open loop is supposed to be one of the opamp secrets.


Patrick
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Old 3rd August 2009, 11:03 PM   #2665
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Hi Peter

I've quickly searched to see if you are still offering your NOS DAC PCB's without luck. At the time I built one of your amps a couple of years ago you were offering a 'Blue' (?) and a 'Green' gold plated board. Are either of these still available.

Apologies if i've missed an obvious post/ link.

Thanks
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Old 9th August 2009, 05:43 PM   #2666
mr.duck is offline mr.duck  United Kingdom
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Peter, that is an impossibly small heatsink you are using!!

I would like to try a very similar thing. I have many questions about it... What CPU voltage, FSB and multiplier settings are you using? Do you know the power dissipated by the CPU and the performance of the heatsink in deg C per watt? What kind of CPU temperatures do you get under load? Are you under volting and under clocking the CPU? What are the dimensions of the heatsink?

I have an Athlon X2 that I am running at 0.88v and 1GHz. My best estimate at power output is 15W max. Do you think that compares well to your setup?


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Old 22nd August 2009, 12:34 PM   #2667
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Peter,

Any update on the phono kit, very interested, assuming you will be offering a premium version as always?
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Old 22nd August 2009, 02:57 PM   #2668
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I've already built first prototype, using those boards, and it came out really nice. I'm still experimenting with fine trimming of PS and smaller heatsinks, but other than that, the circuit is complete. You may notice that it's quite similar in a form to the DACs

If interested, contact me about the boards.
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Old 22nd August 2009, 03:58 PM   #2669
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Quote:
Originally Posted by TrickyMicky View Post
Hi Peter
I've quickly searched to see if you are still offering your NOS DAC PCB's without luck.
Yes, those are available, please contact me through email.
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Old 22nd August 2009, 04:54 PM   #2670
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Quote:
Originally Posted by mr.duck View Post
Peter, that is an impossibly small heatsink you are using!!

I would like to try a very similar thing. I have many questions about it... What CPU voltage, FSB and multiplier settings are you using? Do you know the power dissipated by the CPU and the performance of the heatsink in deg C per watt? What kind of CPU temperatures do you get under load? Are you under volting and under clocking the CPU? What are the dimensions of the heatsink?
Check out the discussion starting with post #2374: AudioSector-chip amp kits, dacs, chassis

I'm presently using Gigabyte mobo and E7200 CPU. It runs really cool and fan was not needed; IIRC the temp was below 50 deg. Recently I added small fun just to be safe and sometimes, for critical listening, I simply take it off.
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