Inadvertently obtained some Polk Cobras...
cjs_121
Posts: 1
Hello all, new here,
I've thought I'd start by asking about Polk Cobra cables.... I've inadvertently obtained a pair (properly terminated, round version). Tested them, they work fine, though they are too long for my setup (prob about 2.5m) so the bundles are too big. Apparently these things are really sought after?
Not having a tube amp, I imagine i'm unlikely to see the qualities.
Chris
I've thought I'd start by asking about Polk Cobra cables.... I've inadvertently obtained a pair (properly terminated, round version). Tested them, they work fine, though they are too long for my setup (prob about 2.5m) so the bundles are too big. Apparently these things are really sought after?
Not having a tube amp, I imagine i'm unlikely to see the qualities.
Chris
Comments
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Sought after? Not really.Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
Good for testing/destroying amplifiers with poorly implemented NFB (negative feedback) - and wide bandwidth.
Transformer coupled vacuum tube amplifiers shouldn't care much about them one way or another.
They were meant for the good/better quality ss amplifiers of their era (mid/late 1970s) but they're very reactive loads and can be tough on some amplifiers. I would think that well designed & built modern ss amplifiers shouldn't be destroyed by them, but, as @F1nut said (well, as he implied*), they're more of a curiosity/conversation piece at this late date.
They're kind of like those really, really hot hot peppers that destroy one's digestive tract if actually consumed. Yeah, yeah, go ahead and try some -- for the experience, you know?
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* Well, actually as I inferred that he implied.
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I have read that 6 of them in parallel was the ultimate, according to some. Just think what the capacitance per ft. of that was/is!! They are pretty high resistance unless you paralleled them. If you use them with a "Zobel Network" you can use them on any amplifier. It's just a resistor and capacitor in series with each other, across the loudspeaker terminals. I forget what values but you can look up online. The idea of this type of cable is the extremely low inductance for great transient response.
George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
80's technology! Kinda like the Commodore 64!Gustard X26 Pro DAC
Belles 21A Pre modded with Mundorf Supreme caps
B&K M200 Sonata monoblocks refreshed and upgraded
Polk SDA 1C's modded / 1000Va Dreadnaught
Wireworld Silver Eclipse IC's and speaker cables
Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)
There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January. by Dr. Sardonicus -
They have a cool factor in certain circles.....but other than that, they aren't terribly special.I plan for the future. - F1Nut
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Actually they are #100 on Stereophile's list of history's most significant audio products.
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Historically significant in that brought high end (or designer) cables into the collective consciousness......heretofore lamp cord being the standard.....but in and of itself, other than the cool factor I wouldn’t get super excited over them.
I had a pair and was very underwhelmedI plan for the future. - F1Nut
