My integrated amp does not have a subwoofer out, so my manual says I should connect my CD player outs to the line-level inputs of the sub; then, connect the high pass outputs of the sub to the inputs of the integrated amp.This makes no sense unless your CD player has a preamp that you are using to control the volume. Does your integrated amp have a preamp output? It would be helpful to list the integrated amp and CD player.
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Sorry, I was trying to simplify. I use a Cambridge 851C CD/DAC/Digital preamp (as a CD player or to the digital input from my computer) and a Cary CAD 300SEI integrated amp. Sunfire manual says go from the preamp outputs to the sub line-inputs and then from the sub's high-pass outputs to the inputs of the integrated amp.
I would not be overly concerned about using "subwoofer" interconnect cables. Any audio interconnect cable will pass a full range (20 Hz - 20,000 Hz) signal. If the cables are relatively long you might want to consider using ICs that have good shielding.
I highly recommend cables from Blue Jeans Cable: http://www.bluejeanscable.com/store/subwoofer/index.htm. I personally like the Belden 1505F cable for its flexibility.
Now, based on your electronics, where are you controlling volume? Are you using the Cary as an amp with its volume control fixed and controlling volume in the Cambridge? If yes, then connect the cables as you described in your post.
Thanks, and yes, that makes sense that you are using the 851C to control the volume.
As far as cables, you should use the same pair of normal interconnects for both connections. This should give you a good full range signal into the sub, then that same signal out to the amp, less the low frequencies due to the high pass filter.
It wouldn't surprise me that the only difference in some subwoofer cables is labeling and being sold as a single instead of a pair. Even if there is a difference, you still need to use normal interconnects.
It wouldn't surprise me that the only difference in some subwoofer cables is labeling and being sold as a single instead of a pair.This Blue Jeans Cable,
and the link in the previous post to the Blue Jeans Cable subwoofer cable proves my point.