Originally Posted by Mr.Q
I'd rather spent money on bass trapping then getting a second sub. Also, if you set it up right, you won't be able to localize the sub. Make sure to use the HI level connection for stereo listening. It will add much more then just low bass. Setting up a REL Hi level will be hard though, so try following the setup guide in the manual. For HI level, try putting the crossover a fair bit lower then your main speakers are specced. My speakers are specced to go down to 45Hz, but the REL is crossed to 31Hz (I got the B1). A lot of people cross the REL to high, and set the gain to low, resulting in bass peaks at the point where the mains and REL overlap and weak performance in the sub bass area (remember both your speakers and the REL have a roll off, not a cut off).
The hardest part of the setup is getting the phase right. Getting the 180º switch right is easy: Just pick the mode that sounds hardest. Everything between the 180º is achieved by moving the sub inches from the back and side walls. It's hard to hear, but stop moving when the bass is tight. When not right, the bass usually will hum behind the main speakers.
Have fun listening
I started with the little REL Quake II (comparable to the current T5) and was sold right away. I went for the B1 eventually and still use the Quake for HT duty in my HT room.
thanks...the hi level inputs were pretty easy to figure out. The store gave me a good verbal and visual instructions also.
the T7 definitely hits harder than my Mirage sub. a lot more actually. I can notice the fullness at the back of the room in the kitchen now. Obviously I haven't found the perfect set up yet, nor tested a lot of material. Only have another night before I make my decision.
I'm really trying to figure how much I want, need and can have while being a good neighbour. Looking at my available space, dual subs in theory is better but the available space only gives me two spots to put them in a decor friendly manor. Maybe a single higher quality R-218 is the way to go. The T7 is enough bass, does that mean I don't need the better sub (R218)?
To me, good subs is just filling in the bottom end for my room/speakers. i don't know how to judge quality beyond integrating well. I know what bad bass is, but REL sells their subs as being all good at integrating. Going up the REL food chain is just more power, and bigger dynamics. Hard to quantify going up the model line as better bass. Does better really mean SPL? Do you need SPL to hear/feel <30Hz? Because if it requires loudness, then I cannot play it that loud.