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4 conductor cabling on dual 18 subs

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Michael Mills:
Is it worth the expense and to go with 4 conductor cables to each sub box, example...jbl 828s in discrete vs a 2 wire in parallel?
How does it relate to damping,  ie. Each speaker in each box cabled back independently via (4 wire) only to have both pair terminate on the same output of the amp to achieve a 4 ohm load

Brian Jojade:

--- Quote from: Michael Mills on March 22, 2023, 06:20:03 AM ---Is it worth the expense and to go with 4 conductor cables to each sub box, example...jbl 828s in discrete vs a 2 wire in parallel?
How does it relate to damping,  ie. Each speaker in each bow cabled back independently via (4 wire) only to have both pair terminate on the same output of the amp to achieve a 4 ohm load

--- End quote ---

If you have 4 conductors vs 2 and they are all the same gauge, more conductors would mean more copper and thus less loss in the line.  In real world scenarios, unless you're running undersized wire or very long distances, you're going to be hard pressed to end up with an audible difference.

Steve-White:

--- Quote from: Brian Jojade on March 22, 2023, 07:45:49 AM ---If you have 4 conductors vs 2 and they are all the same gauge, more conductors would mean more copper and thus less loss in the line.  In real world scenarios, unless you're running undersized wire or very long distances, you're going to be hard pressed to end up with an audible difference.

--- End quote ---

+1

In practical application, it doesn't matter.  If making 100' runs from the amp, then it's worth consideration.

Nathan Riddle:
Michael,

You may enjoy this calculator for determining all of the various variables.
https://products.electrovoice.com/na/en/cableloss

And a paper on damping factor:
https://linea-research.co.uk/wp-content/uploads/LR%20Download%20Assets/Tech%20Docs/Damping%20factor%20debunked%20-01a.pdf

GLHF!


--- Quote from: Steve-White on March 22, 2023, 08:12:51 AM ---In practical application, it doesn't matter.  If making 100" runs from the amp, then it's worth consideration.

--- End quote ---

I think you mean 100ft  ;D

Michael Mills:

--- Quote from: Brian Jojade on March 22, 2023, 07:45:49 AM ---If you have 4 conductors vs 2 and they are all the same gauge, more conductors would mean more copper and thus less loss in the line.  In real world scenarios, unless you're running undersized wire or very long distances, you're going to be hard pressed to end up with an audible difference.

--- End quote ---
Yes all conductors are same size, 11/4 cable with NL4 on box end and 1 binding post with both pair on amp side. Amps are Crown MA 2500 bridged, with 1 amp per box. Cables are 50'
4 sub boxes and 4 amps.

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