REL subwoofer crossover question


Hope someone can help me out with this.....I am somewhat familiar with how the crossover settings work on REL subs (2 Brittania B2) but don't know if they differ from other manufacturers such as Velodyne. My question is should I be hearing bass frequencies in the 60-80 hz range when I have the crossover setting at the A 1 position (which according to the manual rolls of at 22 HZ? I'm not too familiar with how the crossover rolls off, but I'm surprised that I can't get any rolloff below 80HZ. Is this room nodes/issues or what? I have played a little with placement and all but haven't gone crazy with them. I am using a single RCA for the left one out of my preamp and vice versa. (I haven't tried the neutrik connections yet, have to purchase if the are truly better). Any thoughts? Thanks.
audioguy3107

Showing 3 responses by audioguy3107

No, Zephyr, it's running out of a preamp output (this is a 2 channel rig, no surround). When I had a Velodyne DD sub in the system, of course I would use the internal crossover etc etc and I had it crossed over pretty low, probably around 40 Hz or so (I've got Avalon Eidolon Visions, no monitors) so they didn't overlap with the lower bass of the Eidolons. I was just surprised that on the absolute lowest setting on the REL crossover, I was still getting quite a lot of sound at the higher frequencies. I'm not a REL expert by any means, and I know that their crossovers/integration is different, thus my original question. I did have a old REL storm in my old home....I tried the neutrik connection and the low level connection and compared. I'm sure the REL engineers are smarter than I am, but man I sure did get quite a lot cleaner bass out of the low level connections than using their preferred way.
Hi Audiofreak.....mine are running low pass RCAs....a single for the left and single for the right sub.....I don't have the Neutrik connectors yet but I wanted to get them up and running.
Good discussion on this........after talking to someone who is more of a REL expert than I was, turns out their crossovers are indeed different. When you set it on the lower settings, apparently the frequencies somewhat higher are not totally filtered out which is how they manage integration with your speakers rather than a steep cutoff such as in a system with mini monitors etc. Obviously it was much more complicated than that, but that was the main idea. The Britannia B2 has setting specifically for LFE from a HT processor so that you can use their bass management if you choose. I still haven't decided to order the Neutrik connectors for them...I'm sure the manufacturer/engineers are much smarter than I am, but in the past I sure did get deeper cleaner sound from the low pass inputs. They seem to integrate just fine, but I guess I would have to compare.

Drew: What is the thought behind the neutriks not working with a differential balanced amplifiers....I believe by MC 402 is one of those.