My New pre-amplifier£¡

China_Vincent · 9th February 2009, 05:46 AM

My pre-amplifier is composed of WE20A power supply and Pre-Amp Unit. Power supply WE20A reference Western Electric circuit. Pre-Amp Unit is an input transformer, after amplification in WE102F-WE101F for output transformer structure.Input Impedance is 600R,Output Impedance is 600R.Input Sensitivity is 120mv for 1V output.Output Noise at 0.35mv RMS,Frequency is 8-70000HZ -3DB.

China_Vincent · 9th February 2009, 05:48 AM

WE20A power supply:) :) :)

analog_sa · 9th February 2009, 06:13 AM

Quote:

Originally posted by China_Vincent
Input Impedance is 600R

Any advantage to this peculiar choice?

China_Vincent · 9th February 2009, 06:16 AM

Quote:

Originally posted by analog_sa

Any advantage to this peculiar choice?

Y

analog_sa · 9th February 2009, 07:04 AM

Then i assume all your sources have been suitably modified

Miles Prower · 9th February 2009, 07:10 AM

Quote:

Originally posted by China_Vincent
WE20A power supply

It's not gonna work since your series pass tube has a cold heater.

Geek · 9th February 2009, 07:41 AM

What does the WE412A || 5M do exactly?

Cheers!

China_Vincent · 9th February 2009, 08:10 AM

Pre-Amp Unit

China_Vincent · 10th February 2009, 06:41 AM

Geek · 10th February 2009, 07:58 AM

Did you see our questions?

Cheers!

9th February 2009, 05:46 AM	#1
China_Vincent diyAudio Member Join Date: Dec 2005 Location: Auckland, New Zealand	My New pre-amplifier£¡ My pre-amplifier is composed of WE20A power supply and Pre-Amp Unit. Power supply WE20A reference Western Electric circuit. Pre-Amp Unit is an input transformer, after amplification in WE102F-WE101F for output transformer structure.Input Impedance is 600R,Output Impedance is 600R.Input Sensitivity is 120mv for 1V output.Output Noise at 0.35mv RMS,Frequency is 8-70000HZ -3DB.

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9th February 2009, 07:04 AM	#5
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	Then i assume all your sources have been suitably modified

9th February 2009, 07:41 AM	#7
Geek diyAudio Member Join Date: Sep 2004	What does the WE412A \|\| 5M do exactly? Cheers!

10th February 2009, 06:41 AM	#9
China_Vincent diyAudio Member Join Date: Dec 2005 Location: Auckland, New Zealand

10th February 2009, 07:58 AM	#10
Geek diyAudio Member Join Date: Sep 2004	Did you see our questions? Cheers!

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