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Re: Sound Technology 1700B modifications

Posted by neubauer (A) on February 6, 2005 at 11:19:58

In Reply to: Re: Sound Technology 1700B modifications posted by john curl on January 26, 2005 at 14:59:53:

1.Just to confirm. Did you change U1 in the oscillator to AD744 and did you also change the output U8 to most likely an AD797. Also what input ops did you change to AD797 (U101&U102 and maybe U103 ??)

2. What changes did you make in regard to the offset and frequency compensation pins?

3. Have you seen any issues with the original opto-coupler U7 in the oscillator? (notch tracking, bad low distortion output)

4. And lastly, do you see any benefits in changing the 741 chips (U2-U5)to alternatives

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