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Old 24th June 2006, 06:23 PM   #1
diyAudio Member
Join Date: Jun 2006
Talking Pre-Amp circuit for newbie

Hi guys,
new to DIY and really excited about it. Just finished a C-Moy pocket Amplifier for my headphones which worked like a charm, and until I installed a DC power jack instead of a 9V batt., it had zero circuit noise. Woooooo!

Anyway, I'm looking to put together my first DIY system from scratch. This means building a pre-amp and two speaker cabs. Does anyone know of any good beginner's plans and/or instructions? I'm not sure I want to buy a kit as the added expense seems sort of pointless if there's a totally free plan or tutorial for a simple beginner's pre-amp. Also, is this all I'll need to get started? Just some speakers and my pre-amp? Will I need some crossovers?

Any help would be appreciated!

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Old 24th June 2006, 06:49 PM   #2
jaycee is offline jaycee  United Kingdom
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Join Date: Apr 2004
Location: Norwich, UK
Unless you already have one, you will want a power amp for driving the speakers. The pre-amp simply functions as a source select (usually) and a volume control stage.
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Old 25th June 2006, 07:49 AM   #3
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so here's a question. Do I need both a pre-amp and a power amp? Or could I just have a power amp?
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Old 25th June 2006, 09:52 AM   #4
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Join Date: May 2003
Location: Townsville, Australia
you really only need a pre-amp if the input source signal isn't strong enough (i.e. a microphone).

if you're driving it from a CD player/tuner/headphone socket etc then it'll generally be plenty loud.
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Old 25th June 2006, 10:08 AM   #5
AndrewT is offline AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
go to ESP site for lots and lots and lots of background and detailed information with working projects. It'll take you weeks to digest all that is of interest.
regards Andrew T.
Sent from my desktop computer using a keyboard
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Old 25th June 2006, 02:19 PM   #6
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Join Date: Jun 2006
thanks guys! ESP seems like a wealth of info. Any additional suggestions out there?
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