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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Re: Speaker Cable Measurements posted by jneutron on August 9, 2004 at 10:51:05:
Maybe I can measure them this evening & get back to you on this - but I imagine both should be rather low. I can say that I've used them without stability problems for a decade (and am using them now) with a DC Coupled OTL amplifier I've designed that has about 200khz small signal bandwidth (about 26 db feedback through most of audio band) but which I never got around to putting phase margin compensation on (although I've done this with a follow-up version of this amplifier design).You can see a photo I took of the OTL with the cables attached in the DIYAudio forum in the Amplifier/Tubes/Photo Gallery Section on page 14. I'm registered there as 'thoriated'. You can see that the amp speaker terminals are a bit inaccessible, so I may cheat and measure the capacitance and inductance of the speaker cable still connected to the amp but if I do I'll be sure to mention it when I post the results.
Btw, biwiring has some value. For one, you can match the cables' characteristics to the speaker section being driven. For the technophiles, it also allows an amplifier to more effectively shunt any crossfed back emfs from the lf section to the hf section & I've seen LF drivers put out some pretty harmonically laden back emf's, too.
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Follow Ups
- Re: Speaker Cable Measurements - Tom Dawson 14:37:43 08/09/04 (6)
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