Should subs be moving at the EXACT same time?

[Subst4nce 10+ year member]

Hey guys, I've noticed with my 2 SE's that they do not move at the same time, it doesn't seem like they are out of phase though.

I'd say they are at MOST 45 degrees out of phase, not the whole 180.

Should I re-check my wiring?

Is this normal for them to be like this?

Are my eyes playing tricks on me?

I've never ran a pair of subs, only have done single 12's, any help would be appreciated.

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[tc3k101 5,000+ posts]

yes they should hit every note at the same time

edit* wire them out of phase from what you have now, if they get louder then u had them oout of phase //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[MTX520 10+ year member]

yes they should hit every note at the same time

x2!!...

if they aint you probaly wired it wrong

 

[KyleBechtold 5,000+ posts]

hrm... weird.. you got a video camera? record it.. do you have a phase turn knob or a switch?

 

[Subst4nce 10+ year member]

Thanks, I'll have to re-check that tomorrow, I thought my eyes were playing tricks on me, but they definitely do not hit at the exact same time.

 

[Subst4nce 10+ year member]

hrm... weird.. you got a video camera? record it.. do you have a phase turn knob or a switch?

If i were to record it, I doubt it would even show it.

Don't have a phase knob.

 

[adas Pro Seller]

for some reason.....some pairs of subs will do that. One reason is if you have the port closer to one sub then another, one can unload easier thus them moving a bit differently.

 

[Side Show 10+ year member]

Take the subs out and swtch them around in the box, it'll tell you if it's the wiring or if it's the box causing it or even if you've cooked one sub

 

[Subst4nce 10+ year member]

Thanks for the help guys i was thinking it was the port.. Ill switch them up today and see what happens

 

[DidUHearThat? 10+ year member]

Disconnect them from the amp and use a small 9 volt battery to connect to the sub inputs. Both subs should move out at the same time and stay out. Reverse the battery and both subs should move in and stay in.

If they do, both wired correctly in phase. Your eyes are playing tricks on you 40 times a second is too fast for you to see with accuracy.

 

[headless 10+ year member]

^--- Correct. It's not uncommon for you to think you are seeing them move at different times or speeds even though they are moving in tandem. Just check their phase using the above method and be happy with them. If they were really out of phase, you'd have massive loss in volume and quality of output.

 

[anj46907 10+ year member]

Hey guys, I've noticed with my 2 SE's that they do not move at the same time, it doesn't seem like they are out of phase though.

I'd say they are at MOST 45 degrees out of phase, not the whole 180

.
Should I re-check my wiring?

Is this normal for them to be like this?

Are my eyes playing tricks on me?

I've never ran a pair of subs, only have done single 12's, any help would be appreciated.

huhhhhhhhh

 

[pawn man 10+ year member]

if the subs are running mono they will move the same. if wired in stereo there may be a slight dif.

 

[Subst4nce 10+ year member]

huhhhhhhhh

http://www.sayedsaad.com/fundmental/5_Sine%20Wave%20In%20Phase.htm

sorta like that.

 

[audioholic 5,000+ posts]

if the subs are running mono they will move the same. if wired in stereo there may be a slight dif.

Not true. Wired 'mono' refers to both subs running off a single amplifier channel. You can do this, wiring the subs together parallel or in series, and still wire one out of phase with the other.