Adding Subs to a 2 channel system. Wiring advise


I'm considering adding 2 subs to my existing system. 

Current system is a Innuos Zen Mk3 to a PontusII and Luxman 509X out to a pair of Focal 948's. 

My thinking is that I will run speaker cable out from the Luxman into a pair of PSB 350's then out from the 350's to the Focals, setting the crossover at 80ish, 

Lots of ways to wire in subs, and lots of information and opinions, but IF I'm thinking correctly this wiring method using a pair of subs that have High Level Input and Output allows this type of wiring method to make the most sense in terms of better separation between the subs and the speakers VS wiring them through a Pre-out (Luxman only has one pre-out) 

My question is how much of the Luxman sound character will I lose (if any) by running through the sub and out to the Focals? 

I'm still pretty new at all this, so if I'm wording all of this correctly I would appreciate any advise or feedback. Thanks in advance! 

carzmaguy88

Sorry, but I just can’t get behind your choice of sub when there are dedicated sub manufacturers that offer a lot more performance and value. For instance, the Rhythmic F12G is similar in size and the same price as the PSB 350 (including shipping) but goes down to 14Hz vs. 25Hz, has 23% more power, and weighs 50% more. Not even a comparison IMHO.
https://www.rythmikaudio.com/F12G.html

On the value side there’s the SVS SB1000 Pro that is smaller but still goes down lower to 20Hz, has 8% more power, and comes with an integration app so you can optimally integrate the subs from your listening chair with your phone (huge benefit). Plus, you can get TWO SB1000 Pros for less than ONE PSB 350 with free shipping.
https://www.svsound.com/products/sb-1000-pro-subwoofer

If you’re only going to use a high-level input I’d add REL to the list as well. Not sure why you’re looking at PSB, but I don’t see why it’d be a good choice given other much better options available. Hope this helps, and best of luck.

 

Thank You Soix! Appreciate the suggestion. I am very new and not as educated as I should be with the whole subject of subwoofers. The reason I was considering the PSB is for the High Level input and Output feature, so (if I'm understanding what I'm reading) this gives me the ability to completely separate the 80Hz and below signal to the subs, and pass through only above 80Hz to the mains. If I hook up a sub without the High Level Input and Output (say from the Pre-outs, etc) then am I not still sending the full signal (below 80Hz and above 80Hz) to the mains as well. I've been told there is a benefit to completely separating the signal between the sub and the mains? Or am I just not understanding it correctly? 

IMHO, you would save yourself a lot of effort if you bought a Vandersteen Sub 3.

This route isn't 'cheap', but it provides an easy and seamless way to integrate your speakers with the sub. It also allows you to dial in the sub with an equalizer-which no other sub manufacturer offers. (You do need to purchase the Vandy high pass filter). Though other manufacturers offer low and high pass filters, Vandersteen uses 1st order crossovers-which minimize time and phase distortions that occur using higher ordered crossovers.

 

If this doesn't work for you. There are other ways to 'skin the cat' 

Using other subs, the 'recommended' way is to use the speaker output to drive the sub. That way the signal is the same to the speaker and the sub, so you will be able to dial them in 'easier'. (You need a second set of (speaker) cables to connect to the sub, in addition to the set going to the speakers).

 

The other way is to use an aux preamp output to the subs. This works well, at least for me. (And, you will need a second set of cables (interconnects), to go from the preamp to the sub.

Mind you, this is dependent upon what the sub you choose offers in the way of connectivity.

Bob