Axiom Home Page Forums General Discussion Technical Questions My findings on setting delay (distance) with subs.

Is it 3' or 6' you add for DSP Randy? For some reason, 6' is burnt into my memory banks.

I've heard both figures, though I've never heard an official stance from Axiom.

Hey Mike,

Well, I know Jakeman always said add 3ft for any component that is DSP based. So add 3ft for the sub, and also if you have something like the Velodyne SMS-1 in the equation, add another 3 ft.

I've been playing around with using the actual physical distance of 13ft, upto 16ft, and everything in between. I'm not seeing a huge difference between using the actual distance, or adding 3ft, or anything in between. But I see a huge difference compared to using 26ft, that is just crazy. I could hardly detect the 600 with a setting of 26ft for distance.

Right now, the kids are watching The Incredibles, and I have the 600 set at 13ft distance, which is what I'd get if I used a measuring tape, nothing added. It is performing great.

I would be interested for others like RickF to try this, his 600 is right next to the seating area.

I'm finishing up my Bass Traps today and need to re-calibrate everything. I'll give it a try. I have always thought the bugus number Audyssey came up with was silly and re-adjusted to add 6' to actual. I have not ever experimented as you have. I am curious now though. I'll play some and post the results.

Do you know if you change the distance setting, after Audyssey has completed, does that mess with Audyssey, or disable it? I know you can change your speakers to small after the fact, I just don't know where Audyssey comes into play.

Here is the Audyssey setup guide from AVSforum that one of the members put togethor, very complete. Looks like they do not recommend changing the sub distance if it is higher than the actual distance, as that will screw up the time delay from the sub output, and what the mic measured. hmmm

http://www.avsforum.com/avs-vb/attachment.php?attachmentid=134123&d=1235138717

Randy, how do you factor in your multiple subs when setting distance? I'm curious because I have three subs, but in a much smaller space then yours.

I have a feeling I'm going to be doing some tweaking today!

Well, I talked to Jakeman about this once, and read an article on audioholics about setting up multiple subs. Both say to average the distances of your subs. It is best if you can try to space the subs close to the same distance, but that is not always easy.

So following that rule, I have the following:

12ft (350) + 12ft (350#2) + 15ft (EP600 12ft+3ft for the DSP) / 3 = 13ft average.

I plan to experiment later today with just using the actual 12 ft measurment for the 600, and not figuring in the 3ft addition, but probably won't be able to tell the difference.

Again, if you can place all the subs the same distance, you don't have to average.

Makes sense, and really, in your case, I don't think that extra three feet will make much of a difference. It'd be more difficult if the subs were drastically different in length.

Thanks!

When I used Audyssey for a brief few days, a light appeared on the display of the Denon showing that it was enabled. There are many different Denon models but they all should have something similar telling you when it is enabled or not without having to go into any settings.