2 subs and one sounds alot louder

[KloakMunk]

hey i have two subs in this config and the 2 sounds louder than 1 and both have flat surface in three of 4 ways from the speaker itself and i cant figure out why because its all flat surfaces. i cant figure it out. i know sub in corner should be loudest but i cant figure out why when both of them has about the same flat surface on the back and sides.

 

[Duke]

I assume the two subs are identical.

The flat surfaces on either side of 1 are too small relative to subwoofer wavelengths to provide useful boundary reinforcement. So it is normal that 2 is louder due to its location in the corner.

It is also possible that, for some other mechanical or electrical reason, 2 just plays louder than 1. You can check for this by trading places: 1 goes where 2 is now, and 2 goes where 1 is now. See whether 2 is still louder in its new location, or if 1 is louder now that it's in a corner.

 

[ppierre]

Try each corner :

+-+-------+-+---------+-+
|1| desk. | |Furniture|2|
+-+       | |         +-+
| |       | |         | |
| +-------+ +---------+ |
|                       |

 

[KenMasters]

Yes, not unusual at all for sub two to be louder than one. There's the additional boundary reinforcing output and quite likely very different modal behaviour.

ppierre's suggestion is a good one if you're looking to maximise output. Ideally you'd measure each at each position to see which combination works best.

 

[Flaesh]

What sub sounds louder, I or Z? How exactly was the volume compared, are there any measurements?

 

[mj30250]

Normal rooms make a mess of bass. If one sub is getting boundary reinforcement and the other is in a null, a large discrepancy in output is to be expected.

If you have placement flexibility, take measurements in REW at various positions until you find the locations that provide the flattest frequency response, or at least those that provide the fewest broad dips and then EQ down the peaks. If you are unwilling or unable to do this, then simply turn down the trim/gain on the louder sub until they sound even.

 

[Ricardojoa]

Difference between the knobs on the sub amps and electrical out put

 

[KloakMunk]

thanks for all the good answers i have not measure then with something but my ears, and i guess i can try that one with switch places to see if it sounds different from that test. just dialed them to sound close enough to satisfy my needs. and i am not a bass junkie so im happy with it. but i have a feeling in my body that wants them to play the same from beeing the same brand and model. and ive stumbled on a new problem that i have bought new earphones and getting them to be the same and i now know i have slightly different hearing on each ear. but that does not making the sub volume change really the right one 2 is sounding higher then the 1 at the left. and i am going to switch them out to see what happens. now i have to do something about my left ear canal and iems fitting bad. thank you guys. but i dont need to rew them cause i dont need that exact volume when dialed them with my ears and just think they sound good dont care about them beeing the same. but my disorders in my head want to know so i have to operation change sub out to start to night.

 

[KenMasters]

thanks for all the good answers i have not measure then with something but my ears...

If you're going strictly by ear, I would suggest running a sweep like this one to better judge how the subs are performing in each position relative to you main listening position: