ReL Subs: High Level or Low Level connection

Initially, I agree with lalitk. I'll say my extremely short lived experience with REL  favored using the low level signal.

Relocating the sub-bass speaker and equalizing the low level signal greatly improved every aspect of the product. Except for its dramatic -6dB roll off beginning in the mid 30Hz region. It remained void of any worthwhile desirable and delicate subsonic output present on many recordings. A degree of which is provided by most all -3dB subwoofers.

Personal taste is everything.

sns "I much prefer the REL’s integration vs the low level with DSP I’ve tried with other subs designed for low level outs."

What make and model of third party DSP or the make and model subwoofer with onboard low level input processing did you try?

If those "other subs" low frequency were rated at -3dB how did you determine their position within your room?

mijostyn   Your's was an informative ah-ha post for me.

Hacks that we are, despite the systems star grounding we assumed a grounding issue but were very hesitant to lift the amplifier ground.

The three of us could hear a noticeable issue when those high level cables were connected to the JC-1 amplifiers that were powering the system. It wasn't a huge issue but once we identified it became one of those things you couldn't help but hear.