How Many Times Can You Split A Subwoofer Signal Using A "Y" Connector?


My Marantz AV7705 preamp processor has two line level rca subwoofer pre-outs.

I am trying to emulate the Audio Kinesis SWARM subwoofer system.

Can I connect four or eight powered subwoofers to the system using y-connectors?

Can you split a single subwoofer signal into two or four signals? 

These are the subwoofers I'm considering using...I'd like to use eight subs if the signal doesn't degrade from having it split so many times. 

Each sub has a 12 inch driver with a 115 watt internal amp (230 watt peak)

Klipsch R-120SWi wireless subwoofer...

I will hard-wire the subs, I will not go wireless

SPECIFICATIONS: FREQUENCY RESPONSE 29Hz - 120Hz

MAXIMUM ACOUSTIC OUTPUT 115 dB

AMPLIFIER All Digital AMPLIFIER POWER (CONT/PEAK) 115W RMS/230W

Low-pass, 0/180 phase, Auto Power On

12” high excursion spun-copper IMG woofer MDF Bass-Reflex via rear-firing port

Line level/LFE RCA jacks 16.5” (419 mm) 14” (356 mm) 19.2” ( 488mm) 31 lbs 

 

128x128mitch4t

Assuming all subwoofer input impedances are the same, you divide the input impedance of one by the number of total inputs.

So, if you have a 40K input impedance, but 5 subwoofers:

40,000 / 5 = 8,000 final impedance.

Whether your preamp can drive that or not is another story.

An alternative to the swarm is documented at the miniDSP site here.

as i understand it the number of times you can split a signal without degradation depends on the output/input impedances of the amp/preamp. in your case i would just use a speaker selector, which you can get very cheaply.