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Re: Schematic - first version [message #30151 is a reply to message #30149]

Thu, 20 January 2005 11:26

Damir
Messages: 1005
Registered: May 2009

Illuminati (2nd Degree)

It`s hard to avoid the pot - various sources have various output voltages, say from 100mV to 2Vrms. Amplification of our preamp is about 16 or so, and if we don`t have the control, then output voltage from the preamp is 1,6-32Vrms! The typical sensitivity for the full output of power amp can be 1-2Vrms, sometimes lower. We can put the pot at the input, or at the output of the preamp, better on the input.
If too much amplification is the problem (high output sources), we can use lower-mu tube, say 12B4A, but then we must change the operating point...

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[Message index]

		Schematic - first version By: Damir on Thu, 20 January 2005 06:18
		Schematic - second version By: Damir on Thu, 20 January 2005 06:24
		Re: Schematic - second version By: Manualblock on Thu, 20 January 2005 07:02
		Re: Schematic - second version By: Damir on Thu, 20 January 2005 13:40
		PS Schematic -Version ? By: colinhester on Thu, 20 January 2005 15:24
		Re: PS Schematic -Version ? By: Manualblock on Thu, 20 January 2005 17:01
		Re: PS Schematic -Version ? By: PakProtector on Thu, 20 January 2005 17:49
		6X4 rectifier? By: colinhester on Thu, 20 January 2005 18:14
		Re: 6X4 rectifier? By: PakProtector on Thu, 20 January 2005 18:34
		Thank you By: colinhester on Thu, 20 January 2005 11:48
		No problem :-) By: Damir on Thu, 20 January 2005 13:31
		Re: Schematic - first version By: paba on Thu, 20 January 2005 10:36
		Re: Schematic - first version By: Damir on Thu, 20 January 2005 11:26
		Re: Schematic - OrCad file By: Wayne Parham on Thu, 20 January 2005 21:57
		Re: Schematic - OrCad file By: Damir on Fri, 21 January 2005 06:41

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