15th July 2005 07:10 AM
Question : stereo tape head preamp
hi can anyone guide me as to how to use the 741A (dual op amp) for pre amping a stereo tape head.
thanx in adv
15th July 2005 08:34 AM
Re: Question : stereo tape head preamp
A 741 is a VERY bad choice, it's an ancient low spec opamp, there are many much better opamps to use (and probably none that could be worse?). A tape head preamp requires very high gains and low noise, a 741 would not really be suitable.
Originally Posted by sairam.simha
A quick look on Discovercircuits gave this link http://www.electro-tech-online.com/c...ound20Card.pdf.
15th July 2005 01:24 PM
You will also need the Proper Frequency Compensation for your Preamp.
I think its an "NAB" Curve for Tape.
There is a Transistor Preamp on my site that is Suitable, but you will need to come up with the part values for this NAB compensation.
I have determined the values for an "RIAA", Phono Comp, But never had a reason to figured out the NAB Tape Comp. It is Simular to the RIAA, But a bit different Slopes.
This is a Good Preamp and works best with a Supply of 15 Volts, and up to 40 volts.
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