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Bottlehead Forum > Bottlehead Kits > Quickie > Quickie C1 . . ?
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Author Topic: Quickie C1 . . ?  (Read 567 times)
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the dude
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« on: January 04, 2012, 11:20:32 AM »
Iv'e had this since Halloween, its fabulous!
I was playing with OPA's and LM's before these, no more!  HOOKED!
Anyway, the Carver preamp gave me some trouble, again, so I decided to make a small modification...


BEST mod done to this unit, hands-down.
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Grainger49
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« Reply #1 on: January 04, 2012, 11:48:23 AM »
LAMO!  Very well put.
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Grainger Morrison,

Mozzie quote: Sacred cows make the best hamburgers!

Remember, YOU are the only one who needs to be happy with the sound of your system.

Eros (Mods Have Begun!)/FP-2/Paramour 1/upgrades to all - PS Audio Regenerator, Triangle Zerius Speakers, BA Sub
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« Reply #2 on: January 04, 2012, 07:03:19 PM »
Dude!  I can't tell you how many times I've considered building a quickie into one of my Phase Linear (pre-carver, carver) pre-amps.  Before I got into Bottlehead stuff I accumulated a bunch of PL SS equipment and kept running into equipment problems.  The biggest problem being that the ICs for the preamps are no longer manufactured and don't have a modern pinout so replacing is not a good option.

I love the looks of this stuff but I just can't get any of them running well for any length of time.  I might have to put this idea back on my project list now.

Thanks for sharing, nice work.
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Randall Massey
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the dude
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« Reply #3 on: January 05, 2012, 10:03:35 AM »
Your'e welcome and thanks!
The Joppa board is underneath BTW.
It [Quickie] currently uses the volume balance and power controls.
Next I think I will integrate an electronic crossover I have, it may well get the tube treatment before that.
The Quickie alone [no process] has more stage than the C1 did with all of the holography circuits engaged.
Strangely accurate at the same time... I can't wait to see what BugleBoy tubes do with this thing!
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the dude
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« Reply #4 on: January 10, 2012, 08:09:44 AM »
Iv'e used an hp printer power cube and parallel 63v 1000uf fc cap in replacement of the 9v batteries with fair success FWIW.
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the dude
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« Reply #5 on: January 10, 2012, 12:02:53 PM »
there was some audible noise without the cap.
with the cap its there but not discernible with audio output, only in silence.
I was thinking 2 more in series with + and - wire might be worth trying for giggles...
There is definitely noise though...
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the dude
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« Reply #6 on: January 10, 2012, 12:05:13 PM »
or maybe :
http://sound.westhost.com/project43.htm
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Doc B.
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« Reply #7 on: January 10, 2012, 12:08:16 PM »
You might just try a film cap in parallel with the existing 1000uF, maybe a 1uF or a .1uF. Might shunt more HF noise to ground.
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Dan "Doc B." Schmalle
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« Reply #8 on: January 19, 2012, 10:23:21 PM »
.1uf cap, check. I also found that a piece of copper tape helped strung from tops of tubes to chassis helped with noise.
Microphonics worse with a DC converter?
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Doc B.
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« Reply #9 on: January 20, 2012, 09:21:13 AM »
The microphonics might be worse with a DC converter simply because you don't have the additional mass of the batteries attached to the chassis plate.
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Dan "Doc B." Schmalle
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« Reply #10 on: January 20, 2012, 02:38:02 PM »
LOL I bet that's what it is!
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