Originally Posted by DMara
I am about to install dual JL Audio Fathom F113 subwoofers for my HT set. My Denon AVR-4810ci AV receiver supports parallel connections of 2 subwoofers (it has 2 RCA slots for subwoofer connections). However, the Fathom F113 does include an option for me to make one sub a master and the other one a slave, hence only one RCA cable is needed to run from the master subwoofer to the AV receiver, saving me some money as well as some time re-running wire.
My first question is: concentrating on sound quality, which option is better? Running parallel subwoofer connections to the AV receiver? Or running both subwoofers to the AV receiver through one connection via master-slave relationship?
My second question is: if I break the cable run into three cables: one from sub to first wall plate, one from first wall plate to second wall plate (this cable will run in-wall), and one from second wall plate to AV receiver, will the sound quality decrease comparing to running a long cable from the sub all the way to the AV receiver?
Thanks for any response
Hey DMara -
A few thoughts about deployment (YMMV):
- You'll need a balanced XLR cable between subs to run in Slave mode (pg 21 of the owners manual). The RCA cable you have won't do it as I understand it, but will be fine b/t the receiver and the Master.
- You potentially lose a lot of control over how your room will sound. Slave mimics the settings to Master. (pg 21 of the manual: "This method allows you to utilize the signal processing features of one Fathom to centrally control multiple Fathoms in the room.") This eliminates fine tuning (e.g., ARO, volume) of each sub independently. (same page: "'Slave' subwoofer signal processing and level controls will be inoperable.") That may be particular important in your room. My room and sub placement is not symmetrical so running Master/Slave yielded a less ideal result than when each was set Master and independently tuned. For example, you may also want to weak ELF, etc. on one sub more/less than the other.
- Your receiver has Audyssey MultiEQ XT so each sub output may be independently EQ-able. (Hit up the MultiEQ XT forum.) If that's the case (and Audyssey's website suggests so), running each independently seems intuitively like a better way to go - granted though I have zero familiarity with 4810ci so double-check.
Good luck, and let us know how it goes.