Two part question about subwoofers

[}Fear_Inoculum{]

So I'm looking at a pre pro that has 13.3 channels. My questions about the subwoofers are as follows:

1) is it "ok" to have an odd number of subwoofers (IE 3) or will that cause some weird sound/phasing effects and having 2 or 4 is a better option?

2) since the pre pro I'm looking at can handle 3 subwoofers, if I split one of the LFE channels to add a 4th sub, how would that affect the ability to set each subwoofers levels individually via ARC?

Thanks for taking the time to read and or respond.

Cheers.

 

[j_garcia]

Yes, it will be an issue for the 4th since one of those two will not be properly calibrated. Odd number I am not sure, but I would expect it would not be an issue either, but placement will be critical.

 

[ryanosaur]

So I'm looking at a pre pro that has 13.3 channels. My questions about the subwoofers are as follows:

1) is it "ok" to have an odd number of subwoofers (IE 3) or will that cause some weird sound/phasing effects and having 2 or 4 is a better option?

2) since the pre pro I'm looking at can handle 3 subwoofers, if I split one of the LFE channels to add a 4th sub, how would that affect the ability to set each subwoofers levels individually via ARC?

Thanks for taking the time to read and or respond.

Cheers.

No, no issues. In fact, Geddes’ multi sub technique kinda leans towards 3 subs, strategically placed to all work together with your mains. This technique also works great in irregular rooms.

The Welti-Devantier approach which is what focuses on pairs of subs is most effective in regular shaped rectangular rooms.

If you split two subs from a single output, you can use a mini DSP 2x4 to individually control them,otherwise, you would need to place those sub symmetrically in the room, and equidistant from the LP.