Hey guys,

I am doing another setup on my subs and I was wondering what the best way to determine the best crossover point is? I am set at 80 in my Arcam AVR300 and all the way up on both my subs now.

Also, I was wondering what bass source to use for finding proper sub location. I have traditionally used a bass heavy dvd but if you guys have better suggestions please chime in.

Hey guys,

I am doing another setup on my subs and I was wondering what the best way to determine the best crossover point is? I am set at 80 in my Arcam AVR300 and all the way up on both my subs now.

Also, I was wondering what bass source to use for finding proper sub location. I have traditionally used a bass heavy dvd but if you guys have better suggestions please chime in.

If you are using bookshelf speakers for you mains, you may be better off with a hgher crossover.

No, actually I am using custom made Harper Obelisks. They are Aluminum 10" woofers, soft dome mid by Dayton, and Titanium tweets. They are unbeliveable, especially with my old Marantz 2230. I haven't measured them but they seem to play down pretty low and with lots of authority. They almost feel (in two channel operation) like they are running with a sub. They do however sound a bit better when I set my Arcam Avr300 to Small + sub.

Bump

Bump:D

It sounds like 80 Hz might be the best choice for you, as your mains are no doubt capable of covering the 80Hz on up. Keep the speakers set to Small in the receiver, so everything below the crossover point goes to the sub.

I use my trusty Tone Loc "Loc'd After Dark" CD or Snow "12 Inches of Snow" when want to exercise the sub or fiddle with placement ... at least before I got my Velodyne SMS-1 which has a frequency sweep and on-screen frequency response display.

Greg

The crossover point depends on the particular models of speakers and sub. My standmounts are rated as -3db at 45hz, I find they play the best when the bass is cut off from them at either 50 or 60hz, using 60hz currently. They are capable of very clean, tight and powerful bass down to 50hz so I prefer their version of bass over the sub's down to at least 60. Other speakers can have more (floorstanders) or less extension, and their bass can also be of less power or quality in which case the sub does a better job even though they extend low. The choice of crossover point also depends on the sub, eD recommends crossing their subs over at 50-70 hz on their forum. Which suits my speakers perfectly. A bigger driver generally wont be able to go as high with clean output as a smaller one I think, if that logic is correct a 12" would do a better job with 150hz material than the 18" one.

It sounds like 80 Hz might be the best choice for you, as your mains are no doubt capable of covering the 80Hz on up. Keep the speakers set to Small in the receiver, so everything below the crossover point goes to the sub.

Greg

Yes I agree 80Hz thou I would mention the Behringer DCX2496 oh, I shouldn’t and mentioned that, :D it may be bit to complicated for user to use, thou it comes highly recommend as (loudspeaker management crossover systems) is the word now in cinemas.

Hi,
I just got a eD A2-300 and ran the set-up with the Denon 3808. My main speakers are PSB Image T55s. Based on the set-up, my mains were set to Large . I see that the T55s are rated down to 32. I have been reading a lot of articles that say to just set them all to small and the crossover to 80. I guess I was wondering if I should leave the set-up as is or change it?
Thanks,
Rob

Hi,
I just got a eD A2-300 and ran the set-up with the Denon 3808. My main speakers are PSB Image T55s. Based on the set-up, my mains were set to Large . I see that the T55s are rated down to 32. I have been reading a lot of articles that say to just set them all to small and the crossover to 80. I guess I was wondering if I should leave the set-up as is or change it?
Thanks,
Rob

Hey Rob,

Everything I have have read plus my own experience is to set them to small. My only issue is finding the right crossover point. If I set it too 70Hz it begins to sound a little anemic. I have it at 80 now and it sounds fine, not much different from there to 100. Above that It gets a easier to localize.

play around with differnet settings and see which ones sound good.

play around with differnet settings and see which ones sound good.

+1
Part of the fun is playing around to find out what sounds best! It is all very dependant on your speakers, sub and room.

Q1. How do I find the right XO setting?
A: With the sub off, crank up the volume to -0db and start playing a -0db sweep from whatever freq. of your choosing down to 30hz or so. Get out your SPL meter and keep track of your speaker's performance. Once the output starts to drop and/or you start hearing some distortion, right around there is where you want your XO point because your speakers can no longer handle it. Hopefully it'll be closer to 60hz instead of 100hz.

If the sub can't handle the XO setting, an upgrade/modification is in order.

Q2. How do I find proper sub location.
A: Put the sub at the listening position...yes up elevated off your couch. Now grab your SPL meter again (or fire up REW) and start measuring 100-10hz sweeps (or whatever freq the sub can handle) in every possible location you can place your sub. Compare them all to each other. Which one has the best response with the lease compromises? Once you figure that out, place the sub there, put the mic at the listening position and start measuring sweeps again. Turn the sub and remeasure. Keep doing that until you've turned it 180, or possibly 360degrees. Where-ever it measured best, leave it there. After a week of playing around, you're done!