Thread: Cheap DIY Phono Preamp
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Old 11-26-2007, 04:42 PM   #7 (permalink)
nikongod
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Join Date: Jan 2005
Location: northern NJ
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i forgot to say before and meant to:
the case work does indeed look very nice. it looks like there is ample room for some other stuff should you ever decide to add it (a moving coil stage for example.)
Originally Posted by dcheming View Post
I'm not sure on this. I would think that you could since I don't see how any DC could be coming from a cartridge, but I could be wrong.
some op-amps do "more or less" require an input cap (op-amps with bipolar input transistors for example) but you may even still be able to get away without one on a phono stage, where it looks like there is an output cap.
Originally Posted by luvdunhill View Post
probably needed for moving magnet cartridges. Capacitance is used to load MM carts like resistance is used to load MC carts.
the cap for loading an MM cart is usually TINNNY (like a few pF as opposed to uF) and in parallel to the 47kohm loading resistor. im pretty sure that cap is there as a DC blocking cap.
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Originally Posted by mkmelt View Post
ACHTUNG - ALLES KOPFPHONERLISTENERS

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Last edited by nikongod; 11-26-2007 at 04:44 PM. Reason: i misplaced one of the quote brackets
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