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 1 response by catcher10

I've done both, with my Parasound HINT which has bass management system I can high pass mains and low pass the sub. Running the mains full range gives me the best full range sound with my sub. I like the bass from my mains so why would I cut them off?? You lose some dBs cutting the mains and a bit of detail from the lows as you don't want to hear anything from the sub but you do want what it adds to say the stand up bass.
I have the HINT low pass at 40Hz, volume at about 50% and phase at about 130 deg on the sub. I can put my ear about 12-18" from my sub and I don't hear anything, if I turn the sub off its the same but a bit less low end detail and volume.
My mains have 8" woofers so why would I want to reduce the amount of air I can move by only using the subs 12" driver?
I think running your mains full range is the best way to go.