Possible phasing issue with subs.

Need help with your car stereo system? Have a technical question? Post here.
Post Reply
User avatar
capitolj80
Posts: 392
Joined: Wed Feb 13, 2008 1:08 pm
Location: Morris, IL

Possible phasing issue with subs.

Post by capitolj80 »

When moving the balance from far left/right to center the sub output seems to weaken slightly or become "thinner". It's strange, but it seems that each individual sub is hitting slightly harder on it's own than the two together. At the very best, the two subs together hit NO harder that each separately. This sounds like a phasing issue to me. Visually, the subs appear to move in unison. Also, her system was professionally installed over a year ago. I have no idea if this has been the case the whole time or what. I wanted to see what you guys' thoughts were before I go switching polarities and whatnot. She's running 2 RSD12's on an RSD1200.1 @ 2ohms. Thnx dudes.
what if the hokey pokey really is what it's all about?
User avatar
marko
Posts: 2356
Joined: Sat Dec 23, 2006 11:30 am
Location: England

Re: Possible phasing issue with subs.

Post by marko »

if the subs are running off a mono amp how can balance effect anything?
Ti1 headunit (unique)
Outlaw in crate.
2x original shrouded ms2250's.
Route 66 in box + custom m100 to match.
Roadster 66 in flight case
Octane LE in box.
Reactor #186 in flight case.
Reactor EQ232
Ti400.2 AL
AX204A + EQ232 + ZPX2 + TBA set
ZCS6 component set
Tantrum+Titanium bass cubes
Ti12d Elite sub
DD5 + DD10 + 6 Ti blocks!
ttocs
the Floor Sweeping Hack with Golden Ears
Posts: 14797
Joined: Fri Dec 19, 2008 9:53 pm

Re: Possible phasing issue with subs.

Post by ttocs »

how much of a difference is it? Have you tried it from different seating positions or just from one? It would be cancellations happening where you are sitting and me be different in other areas.
what else can I say I am a grumpy asshole most of the time.
User avatar
capitolj80
Posts: 392
Joined: Wed Feb 13, 2008 1:08 pm
Location: Morris, IL

Re: Possible phasing issue with subs.

Post by capitolj80 »

oh..I was under the impression that if one of the subs had the polarity wired differently than the other, that they could still play out of phase :o Ya see!! lol this why I ask people stuff.

I only listened from the passenger seat. I wasn't aware that cancellations would be perceived differently from different positions. I thought resonance(?) was the only thing affected by that.

Are cencellations more common in two sub set ups as opposed to one sub?
what if the hokey pokey really is what it's all about?
User avatar
marko
Posts: 2356
Joined: Sat Dec 23, 2006 11:30 am
Location: England

Re: Possible phasing issue with subs.

Post by marko »

capitolj80 wrote:oh..I was under the impression that if one of the subs had the polarity wired differently than the other, that they could still play out of phase :o Ya see!! lol this why I ask people stuff.
they can and still may be out of phase in said system, but if they are on a mono amp I fail to see how turning balance left to right makes a difference?
Ti1 headunit (unique)
Outlaw in crate.
2x original shrouded ms2250's.
Route 66 in box + custom m100 to match.
Roadster 66 in flight case
Octane LE in box.
Reactor #186 in flight case.
Reactor EQ232
Ti400.2 AL
AX204A + EQ232 + ZPX2 + TBA set
ZCS6 component set
Tantrum+Titanium bass cubes
Ti12d Elite sub
DD5 + DD10 + 6 Ti blocks!
User avatar
capitolj80
Posts: 392
Joined: Wed Feb 13, 2008 1:08 pm
Location: Morris, IL

Re: Possible phasing issue with subs.

Post by capitolj80 »

ooooh shit...I see what yer saying...the subs wouldn't be playing individually when the balance is set one way or the other, they would still be playing together. I haven't a clue why, but it seem slightly louder when the balance is completely left or right :o I would think cancellations at this point, but those shouldn't change when moving the balance either since they play in unison the whole time...
what if the hokey pokey really is what it's all about?
User avatar
Mr. Wild
Posts: 257
Joined: Mon Mar 21, 2011 4:47 am
Location: Finland

Re: Possible phasing issue with subs.

Post by Mr. Wild »

Check the midbass speakers polarity. They affect bass output too.
--
M50, MS275, MPS2500, ZX450, ZPA0.3
Post Reply