Pre-Amp circuit for newbie

Dangeruss · 24th June 2006, 06:23 PM

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!

"Danger"Russ

jaycee · 24th June 2006, 06:49 PM

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.

Dangeruss · 25th June 2006, 07:49 AM

so here's a question. Do I need both a pre-amp and a power amp? Or could I just have a power amp?

phreeky82 · 25th June 2006, 09:52 AM

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.

AndrewT · 25th June 2006, 10:08 AM

Hi,
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.

http://sound.westhost.com

Dangeruss · 25th June 2006, 02:19 PM

thanks guys! ESP seems like a wealth of info. Any additional suggestions out there?

24th June 2006, 06:23 PM	#1
Dangeruss diyAudio Member Join Date: Jun 2006	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! "Danger"Russ

25th June 2006, 10:08 AM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, 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. http://sound.westhost.com __________________ regards Andrew T.

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24th June 2006, 06:49 PM	#2
jaycee diyAudio Member 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.

25th June 2006, 07:49 AM	#3
Dangeruss diyAudio Member Join Date: Jun 2006	so here's a question. Do I need both a pre-amp and a power amp? Or could I just have a power amp?

25th June 2006, 09:52 AM	#4
phreeky82 diyAudio Member 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.

25th June 2006, 02:19 PM	#6
Dangeruss diyAudio Member Join Date: Jun 2006	thanks guys! ESP seems like a wealth of info. Any additional suggestions out there?

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