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PostPosted: Fri Oct 19, 2012 10:09 am 
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Location: Malvern
As I said. Like so many audiophiles - far more money than sense.

Interesting... so much BS crammed into such a short article.

http://www.soundstage.com/revequip/duvall01.htm

His speaker cables seem particularly capacitive to me, so I decided to do a quick and dirty experiment - as it's Friday PM and there's beer at 4pm.

I assumed a speaker cable length of 10ft (approx 1.5nF), and substituted a loudspeaker with a 6 ohm calibration resistor (not ideal, but probably gives a smoother roll off curve than a real LS would), and ran a calibration between 9kHz and 30kHz. OK, my source impedance is wrong as I only had limited choice of generators due to others being in use, but you get the general idea. High capacitance in the cable causes 4dB HF roll-off, which could make a harsh or toppy system sound 'nicer' - but less accurate.

Image

The right hand axis is loss in dBm, ignore the left hand axis in this instance.


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PostPosted: Fri Oct 19, 2012 2:09 pm 
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And a shark in my lounge!

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PostPosted: Fri Oct 19, 2012 4:52 pm 
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Nice shark.

notice some thing odd/mad about this set up? :lol:


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PostPosted: Fri Oct 19, 2012 6:07 pm 
King of the DuckBoard
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:)


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PostPosted: Fri Oct 19, 2012 6:59 pm 
Gold Trader / MacRetro rider
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tintin40 wrote:
Nice shark.

notice some thing odd/mad about this set up? :lol:


no graphic equalizer ?


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PostPosted: Fri Oct 19, 2012 7:15 pm 
King of the DuckBoard
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clockworkgazz wrote:
tintin40 wrote:
Nice shark.

notice some thing odd/mad about this set up? :lol:


no graphic equalizer ?


He has placed a speaker on top of each other. also turned them up side down :shock:

they are not light weight speakers. Just potty.


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PostPosted: Fri Oct 19, 2012 11:31 pm 
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Like the bird in the white PVC, sod the speakers, always been a sucker for a bird in PVC :lol:


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PostPosted: Sat Oct 20, 2012 10:30 am 
King of the DuckBoard
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apache wrote:
Like the bird in the white PVC, sod the speakers, always been a sucker for a bird in PVC :lol:


But wearing tights :x

getting off topic :lol: :lol:


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PostPosted: Sat Oct 20, 2012 5:11 pm 
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Are RCA Attenuators snake oil or do they have any real benefits please ?


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PostPosted: Sat Oct 20, 2012 5:44 pm 
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If you have serious level mismatches (probably due to improperly designed kit) then reducing the level might reduce distortion due to overdriven input stages.

However, these things are just a resistor in a connector. £3, rather than £30+


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