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28th October 2006, 12:03 AM
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#12 | |
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diyAudio Member
Join Date: Oct 2006
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Re: Battery preamp
Quote:
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29th October 2006, 09:35 PM
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#13 |
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diyAudio Member
Join Date: Jun 2005
Location: Sacramento, CA
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Pics and cost
I've got about $65 into it not including the charger. The Alps stepped attenuator was the most expensive at $25, with the batteries second at $24 with shipping, and all other parts in the $1-2 range each.
Attached are a couple pics - not much to look at, but sure does the trick.
__________________
"Believers cling to the myth despite the evidence, reinterpret the myth to suit the evidence, or lie about the evidence to support the myth." "To err is human; to blame errors on external factors is even more so." |
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29th October 2006, 09:38 PM
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#14 |
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diyAudio Member
Join Date: Jun 2005
Location: Sacramento, CA
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Another pic
A pic of the top/back.
__________________
"Believers cling to the myth despite the evidence, reinterpret the myth to suit the evidence, or lie about the evidence to support the myth." "To err is human; to blame errors on external factors is even more so." |
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30th October 2006, 03:06 AM
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#15 |
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diyAudio Member
Join Date: Sep 2005
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A good battery power Tube Preamp
Someone used battery for grid bias but I used battery for supply my Tube Preamp by switch mode power supply from 12VDC to 275VDC
Quiet background and support hign frequency response more than tube regulated linear power supply ! Thanks analog guy |
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