- Oct 23, 2002
hi uhh i was just wondering what should i have my sub's volume set to? i turn it down but it gets hot either way so im not exactly sure what it should be at. thanks
I have read several threads here from technically minded people who suggest that when calibrating your sub you should reduce the sub volume in your receiver's setup to, say -6db, and compensate by turning up the sub until you get reference level.I am in this camp, BUT... If I set mine way down to -6, the signal never trips the auto-on feature of my plate amp.
After calibration to a level that will trip my plate amps auto-on switch, my receiver settings are -2 sub, +2 mains, and +7 center. My plate amp gain is set around 1/3. BUT these numbers mean nothing to anyone unless you have my exact same room, equipment, speakers, and speaker placement. The final point is, you have to manually calibrate you system and room with speaker placement, a calibration disc and SPL meter yourself. No one can tell you where to put your sub volume knob.
My understanding is that it is difficult to measure, and thus to calibrate, LFE using the standard Ratshack SPL meter most of us have, and thus, when it comes to subs, many tune by ear. Is this not so?Not difficult at all. You just have to compensate for the meters shortfalls by adding the correction values you can find on the net, (to lazy to go look them up for ya..)
Now, I did up my sub level by +2db on my receiver after calibration for movies. I have a sealed sub and it helps boost the low end without adding to much to the rest of the range. For music I leave it set at calibrated levels.
I am using the pink noise tone that alternates between the center and the sub, not the sweep tones. I will try it one more time to confirm the results, but that is what I got last night and that is what I have gotten in the past, which is why I had given up trying to calibrate my sub with the meter. I don't have a tripod so it is hand-held, but I don't get that kind of fluctuation response with my other speakers. I'll post again tonight after I try it one more time. Thanks again for responding!I could see how you might be getting a 10Db swing BETWEEN the 2 alternating speakers, but not just when only the sub is playing its signal. If this is the case, turn the sub up or down before you start your testing depending on if the 10Db swing is hotter on the sub or hotter on the other speaker playing.
If you get a 10Db swing when ONLY the signal is going to your sub, then I am kinda clueless what might be the issue.
Also if you have your SPL meter set to "fast" the needle can go all over the place with pink noise.