I don't have two subs and have never tried this, but intuitively it seems to me the best way to do it would be to calibrate with both subs on at the same time. Have you tried this?
Just my $0.02
Craig
Just my $0.02
Craig
-
Get an exclusive sneak peek into our new project. >>> Click Here
-
Our native mobile app has a new name: Fora Communities. Learn more.
Proper multiple sub calibration?
So I used to have a single 20-29pc+ and would calibrate it flat with my mains. Well now I have two subs not SVS but some home made jobs. I calibrated each individually flat with my mains then when I turn both on I get a nice 5db increase. At first I thought, great bonus however after doing some tinkering I decreased each sub down about 2.5db so together they were flat with the mains. I must say I prefer them together flat with the mains. The peaks in action movies are still just as potent but there seems to be more detail in the sounds of the bass plus a much better meld with music.
What do the pro's recommend.
The way I see it, I still have the extra 5db headroom even though there both turned down a little, however; when watching movies there seems to be more detail in the bass but its not like I lost any low end volume. I know I can and should do whatever sounds good to me but It seems like the way I have it now should be the proper way to do it. The blend between the mains and the subs is now seamless (by ear anyway)
What do the pro's recommend.
The way I see it, I still have the extra 5db headroom even though there both turned down a little, however; when watching movies there seems to be more detail in the bass but its not like I lost any low end volume. I know I can and should do whatever sounds good to me but It seems like the way I have it now should be the proper way to do it. The blend between the mains and the subs is now seamless (by ear anyway)
- Status
- Not open for further replies.
1 - 9 of 9 Posts
Quote:
Nope. Calibrate each one to the correct level individually using each subs' volume control. Then use your receiver/pre/pro's sub trim level to reduce the overall level by whatever the dbs gained from using both together is.
| Originally Posted by craig john intuitively it seems to me the best way to do it would be to calibrate with both subs on at the same time. |
Quote:
Thanks, for the reply but does not help with my question. I know how to calibrate the questoin is. According to the PRO's which is the correct way out of the two.
| Originally Posted by craig john I don't have two subs and have never tried this, but intuitively it seems to me the best way to do it would be to calibrate with both subs on at the same time. Have you tried this? Just my $0.02 Craig |
Quote:
Is that the general concencus? That seems like the proper way to do it to me and it sounds much better as well. I have read post, after post; after post how people hooked up there second sub and got 5-6db's more output yet none of them mention correcting for the output, like there just listening to bloated bass.
| Originally Posted by sivadselim Nope. Calibrate each one to the correct level individually using each subs' volume control. Then use your receiver/pre/pro's sub trim level to reduce the overall level by whatever the dbs gained from using both together is. |
Quote:
Could you explain why this is better please. Not doubting that you're right, it just seems counter-intuitive to me. It seems like any phase interaction issues would express themselves while calibrating only if the two subs were playing at the same time.
Thanks.
Craig
| Originally Posted by sivadselim Nope. Calibrate each one to the correct level individually using each subs' volume control. Then use your receiver/pre/pro's sub trim level to reduce the overall level by whatever the dbs gained from using both together is. |
Thanks.
Craig
Im sure he's assuming that both of the the subs phase issues are taken care of before calibration. And if both subs are sharing the same wall it should not be too hard to figure if there in or out of phase. Plus he stated that you calibrate each sub individually at the subs gain knobs then turn both subs on. You should then see a 5-6db increase (which wold also prove that they are in phase) then adjust the sub out from your pre/pro down to where your mains are.
Does not seem counter productive to me. If you adjusted like you suggested, how are you to know for sure if your getting equal output from each sub.
Does not seem counter productive to me. If you adjusted like you suggested, how are you to know for sure if your getting equal output from each sub.
I have two SVS 20-39 PC+ subs on opposite corners of the same wall. I calibrated each individually, level with the mains and when both are on, realized about a 5 db gain. I prefer to keep them *hot* this way as I don't usually have the volume cranked up to loud. If I'm watching an action moive and really want it to cook, I'd trim the volume with the receiver's sub volume. Mostly, the sound is Ok a bit hot. From the many posts I've read, it seems that most people run their subs a bit on the hot side, and i imagine it wouldn't make a difference it that was one or two subs. JEFF
Quote:
You'd adjust each sub to be correctly in phase individually while calibrating as well. If each is in phase with the fronts properly, then they should be in phase with one another, too.
Calibrating them together is problematic. How do you know how much each sub is contributing to the total dbs? It's much easier to calibrate each (and adjust phase) individually, then lower the level of both, grossly, at the receiver. That way, each sub should always contribute exactly one half of the total sub output.
| Originally Posted by craig john Could you explain why this is better please. Not doubting that you're right, it just seems counter-intuitive to me. It seems like any phase interaction issues would express themselves while calibrating only if the two subs were playing at the same time. Thanks. Craig |
Calibrating them together is problematic. How do you know how much each sub is contributing to the total dbs? It's much easier to calibrate each (and adjust phase) individually, then lower the level of both, grossly, at the receiver. That way, each sub should always contribute exactly one half of the total sub output.
1 - 9 of 9 Posts
- Status
- Not open for further replies.
AVS Forum
A forum community dedicated to home theater owners and enthusiasts. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIY’s, product reviews, accessories, classifieds, and more!
Full Forum Listing
Top Contributors this Month
View All
WilliamR
858 Replies
BASSAHOLIC
472 Replies
bass addict
396 Replies
Recommended Communities
