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Resistors - Sound Quality [message #34913]

Mon, 28 January 2002 11:54

Super_BQ
Messages: 37
Registered: May 2009

Baron

Besides the Caddock and Arcol resistors, does anyone know much about the following resistors on my webpage? I'm hoping to use these resistors in my Theater 4 Pi speakers, but most people use the regular 10 watt ceramic (rectangle block size) resistors.

Please visit the link below

http://www.geocities.com/super_bq/Resistors.html

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Re: Resistors - Sound Quality [message #34917 is a reply to message #34913]

Mon, 28 January 2002 15:51

Wayne Parham
Messages: 18709
Registered: January 2001

Illuminati (33rd Degree)

I went to Odessa, Ukraine last summer and spent some time in the automobile parts stores and the radio parts stores. I was building transitor ignition systems for guys still running points, and wanted to buy 15A, 250V PNP transistors. The electronics shops had tons of huge resistors that looked just like the green ones you've showed at your site.

I expect they would work just fine. Just be careful of the inductance. Some of them look like wirewound resistors. Run a high frequency through them and see if their impedance changes, to be sure.

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Re: Resistors - Sound Quality [message #34921 is a reply to message #34913]

Mon, 28 January 2002 18:02

bmar
Messages: 346
Registered: May 2009

Grand Master

I have used ceramic hollow core's like this. the adjustable ones are pretty neat, and they can be had in some big watts too.
I can not hear the difference between these and non-inductive. i'm sure other people can though.
I'm hoping Wayne will enlighten us on the why's and why nots of non-inductive resitors when he gets time for his next update on the crossover doc.

take care,

Bill

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Re: Resistors - Sound Quality [message #34923 is a reply to message #34921]

Mon, 28 January 2002 19:49

Wayne Parham
Messages: 18709
Registered: January 2001

Illuminati (33rd Degree)

Non-inductive resistors are preferred simply because they are closer to pure resistance. Wirewound units have a small inductive element. This acts a little bit like a filter, something like a tiny bit of EQ. The truth is that the inductance is so small, you usually can't hear the difference when used in a loudspeaker crossover. But there is a change that the inductance interacts with capacitance in the circuit to oscillate at very high frequency, which can intermodulate and make a grainy sound.

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Re: Resistors - Sound Quality [message #34924 is a reply to message #34923]

Mon, 28 January 2002 20:05

bmar
Messages: 346
Registered: May 2009

Grand Master

Hi wayne, and thanks!

the way some folks talk about different brands of capacitors and cable, for the very limited testing i've done. I'm DEAF!
ah, but all the fun would be missed.

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