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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
zephyr24069's avatar
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zephyr24069
1,239 posts
 
Drew: I think you are right....
wolf_garcia
6,598 posts
 
Neutrik Speakon plugs are ridiculously easy to install on a proper cable (any decent 4 wire speaker cable should work fine using 3 of the wires of course), and I've found that method seems to work best with my groovy old REL.
drewfidelity
178 posts
 
I agree with you Wolf, but some amplifiers, differential balanced amplifiers in particular, will not allow this connection to work properly. Not exactly sure why that is the case, but I am sure one of our more technical friends can spell it out.

Hey Zephyr: I hope that you were able to fix the issue. I only know about the LFE input because I did the exact same thing you may have done when I hooked up my first REL. I just got an R505 delivered yesterday and am looking forward to hooking it up later tonight.
daveyf's avatar
daveyf
2,835 posts
 
I had to talk to the ARC tech support about the hook-up with my REL T5 and my ARC D70Mk2. The ARC' s of this vintage and possibly later, use the 4ohm tap as a ground and therefore hooking up the REL was not obvious. I was told to hook up the left and right cable from the REL to the left and right 8ohm tap of the amp and the ground cable to the 4ohm tap. The speaker cables are hooked up to the 4ohm taps and the 0 ohm taps....Haven't tried this yet, but will report back after I have hooked up in this manner.
audioguy3107 OP
40 posts
 
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.
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