Connecting monoblock tube amps to single subwoofer.

What we are talking about is two REL T5x’s. They do have a phase adjustment switch and adjustable xover settings. Nonetheless, I think you are agreeing with me that the set up is not easy. I am no fan of digital room correction tools, much prefer to just use my ears.

I may be dead wrong here but I was always told that the bass signal output is mono. This would mean that when running mono blocks you can tap the sub off just one amp and be ok. The key to this is where you cross over the sub at.

@sgreg1 Bass may be omnidirectional, which is a property of our hearing, but there is NO guarantee from recording to recording, that the signal below 80Hz has been combined and evenly distributed to the L&R channels.

The mastering engineer must chose to do this, and we have no idea when or if this ever happens.

In other words, bass may not be heard as directional but the bass in a recording is not necessarily monophonic.

What we are talking about is two REL T5x’s. They do have a phase adjustment switch and adjustable xover settings.

OOPs. The 0-180 switch is hidden in the logo. A 0-180 switch is the equivalent of moving the sub 14 feet @ 40Hz.

The XO control is frequency only. No filter type or order.