Looking for a simple preamp to use with an LM4562

PierreG · 12th October 2006, 02:08 AM

I'm looking for a VERY simple preamp to use with an LM4562 that would have a pot for volume control.
I would like the schematic to be very simple, so it would have only a have few parts and I would also try that LM4562 to see how it is good.

Somebody can forward me to some schematics?

Nuuk · 12th October 2006, 08:12 AM

Have a look here and also at the buffers page on the same site.

PierreG · 12th October 2006, 12:27 PM

It is on the buffered gainclone page with the OPA 627 ?

janneman · 12th October 2006, 12:49 PM

Quote:

Originally posted by PierreG
I'm looking for a VERY simple preamp to use with an LM4562 that would have a pot for volume control.
I would like the schematic to be very simple, so it would have only a have few parts and I would also try that LM4562 to see how it is good.

Somebody can forward me to some schematics?

Well, how simple? Power supply, LM4562 with a feedback resistor pair to set gain, pot at input, if necessary coupling cap.

Jan Didden

PierreG · 12th October 2006, 01:11 PM

Quote:

Originally posted by janneman

Well, how simple? Power supply, LM4562 with a feedback resistor pair to set gain, pot at input, if necessary coupling cap.

Jan Didden

Yes. It looks simple enough for me.

Nuuk · 12th October 2006, 03:31 PM

The link I sent you is a guide to building a completed preamp. You can use any of the buffers shown on the Buffered GC page in a preamp.

Also have a look at the preamp on the Propods page. Very simple because it uses an SMPS so you don't need to build a PSU from scratch.

PierreG · 12th October 2006, 04:52 PM

Thanks Nuuk.
And for the volume control. Many times I see schematics for pre and buffers and most of the time there is no volume controls or pots. I know I don't know much about electronics....

Nuuk · 12th October 2006, 05:08 PM

A preamp is a volume control, perhaps with a source select switch, and, if it is 'active', some sort of buffer or gain stage.

Buffer circuits can be included in a pre or stand on their own, hence no volume control is shown.

So, if you take all those things separately, choose what you want, and add them in a box, you have your custom preamp!

PierreG · 12th October 2006, 07:15 PM

Thank you for this explaination.

Can somebody now show me me some volume control? with a log pot?

BrianDonegan · 12th October 2006, 07:49 PM

http://www.diyaudio.com/forums/showt...88#post1027188

12th October 2006, 02:08 AM	#1
PierreG diyAudio Member Join Date: Oct 2004	Looking for a simple preamp to use with an LM4562 I'm looking for a VERY simple preamp to use with an LM4562 that would have a pot for volume control. I would like the schematic to be very simple, so it would have only a have few parts and I would also try that LM4562 to see how it is good. Somebody can forward me to some schematics?

12th October 2006, 08:12 AM	#2
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Have a look here and also at the buffers page on the same site. __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

12th October 2006, 03:31 PM	#6
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	The link I sent you is a guide to building a completed preamp. You can use any of the buffers shown on the Buffered GC page in a preamp. Also have a look at the preamp on the Propods page. Very simple because it uses an SMPS so you don't need to build a PSU from scratch. __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

12th October 2006, 05:08 PM	#8
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	A preamp is a volume control, perhaps with a source select switch, and, if it is 'active', some sort of buffer or gain stage. Buffer circuits can be included in a pre or stand on their own, hence no volume control is shown. So, if you take all those things separately, choose what you want, and add them in a box, you have your custom preamp! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

12th October 2006, 07:49 PM	#10
BrianDonegan diyAudio Member Join Date: Dec 2004 Location: Rock Ridge	http://www.diyaudio.com/forums/showt...88#post1027188 __________________ Twisted Pear Audio


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12th October 2006, 12:27 PM	#3
PierreG diyAudio Member Join Date: Oct 2004	It is on the buffered gainclone page with the OPA 627 ?

12th October 2006, 04:52 PM	#7
PierreG diyAudio Member Join Date: Oct 2004	Thanks Nuuk. And for the volume control. Many times I see schematics for pre and buffers and most of the time there is no volume controls or pots. I know I don't know much about electronics....

12th October 2006, 07:15 PM	#9
PierreG diyAudio Member Join Date: Oct 2004	Thank you for this explaination. Can somebody now show me me some volume control? with a log pot?

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