
You can set up the CSX-12 the same way as most other subs — as long as you ignore its unusual features and controls. On the back are a level control, a 40-120 Hz crossover frequency control, a 0-180° phase control and a crossover bypass switch, plus one RCA input.
First among the unusual stuff is a pair of RJ11 jacks (like the ones on the landline phone your grandma uses). These allow easy daisy-chaining of two CSX-12s. Plug a standard phone cable between the two subs, set one to slave and the other to master, and both subs will use the crossover and controls of the master. This doesn’t allow you to fine-tune each subwoofer separately, but it does make adjustments much quicker if you’re content to run your subs in parallel.
The other unusual control is the Bass Boost knob. The manual says it can “boost or cut up to 12 dB of bass at 50 Hz.” However, it’s labeled 0 at one end and +12 on the other, and the specs say the range is 0 to +12 dB. Which is correct? Only measurements can tell for certain. (Don’t worry, they’re a-comin’.)
The CSX-12 Mark II comes with some nice steel cone spikes that screw into the bottom — way better than the cheezy plastic feet fitted to most inexpensive subs.










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Hi Brent,
I am just now checking out subwoofers. So, very much appreciate your article- all of your articles.
Am looking to get a sub to fill out the lower Hz ranges mostly for music. Earth shaking is not critical to me. Naturalness is. Initially may link the sub up to the updated Denon D-M39S micro system. Eventually likely up to my old, but efficient Klipsch Hersey speakers, plus a Denon or Marantz AVR receiver (or similar).
Which do you prefer: the Cadence CSX-12 sub, or the older HSU STF-2 (or, even the STF-1)? (HSU's warranty is great.) Possibly even another sub as of 2013...
Room is 17.5X18.5 ft with a slight A frame shaped wood ceiling. Floor is cement covered by a rug.
Thanks for your thoughts, Brent.
Angusmerlin
PS>> am not techy
Hi, Angus. For your tastes, I would recommend the Hsu. The CSX-12 is more a "punch sub," better for giving you that high-impact home theater sound than delivering the kind of natural-sounding bass you're describing.