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Seems tough to ensure only subwoofer is playing bass frequencies (& not the main speakers)

Given that the bass from main speakers will be qualitatively different than the bass from a subwoofer...  I do not want  them both playing the bass frequencies. Seeking help in this quest of mine to ensure only the sub plays the bass. 

**My Setup:**
- Source: Oppo UDP 205
- DAC : Black Ice Audio  Glass FX  (fyi: it has volume control)
- Integrated amp: Primaluna Dialogue Premium HP.  (no pre-outs, but has high level mono out and also HT bypass mode)
- Subwoofer: Velodyne DD+ 10 inch.  

Without the DAC in the picture, its pretty easy. The Oppo has bass management & dedicated sub output. This allows using the oppo for master volume control.

How can I use an external DAC (instead of whats built into the oppo) for both the  and continue to send bass frequencies to the sub but not the main speakers ? 

one thought i have is.. it will need introducing an external digital cross over as follows :

Oppo -> DAC -> Cross over -> Subwoofer & Integrated amp

In which case i suppose I would have to use the volume control on the DAC ?
roxito

Showing 3 responses by roxito

roxito OP
22 posts
 
I would not mind using multiple subs of the same type for that purpose.

In this case, the passive woofers from the ported main speakers produce qualitatively different bass than the high powered sealed subwoofer.  I'd prefer to let 1 or more subs deal with bass... and let the mains deal with the rest.
roxito OP
22 posts
 
m-db and elliottbnewcombjr, thanks very much for pointing out the high pass output feature in the sub.

I think its possible to connect it up as follows:

(full range) Line level output from Dac => Rca inputs on subwoofer => High pass line level output => integrated amp => speakers.

I can use the volume control on the dac. Should be able to continue to use the EQ and room optimization in the Velodyne sub.

millercarbon, I will A/B the mains running full range v/s partial range in this new setup. In my existing setup where the Oppo does the bass management, setting the main speakers to "small" worked better.

roxito OP
22 posts
 
The integrated’s subwoofer/mono output is actually a speaker level output. The RCA (right/left) LFE input on the subwoofer is a line level input. Don’t think its possible to hook them up (if I understand you correctly). My integrated does not have pre-outs. Using pre-outs wont help as the full range signal still goes to the main speakers.
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