Amp phase control switch

Home / the12volt's Install Bay / Car Audio / Amp phase control switch (

Topic Closed)

Welcome Guest :)

Members

Search

Register

Login

< Prev Topic Next Topic >

90s civ and sub

Member - Posts: 22

Joined: December 31, 2006

Location: United States

Posted: January 18, 2007 at 10:25 AM / IP Logged

Well, I've searched past threads and have found no difinitive answers, which brings me to the 12volt's "Think tank".

What does a phase control switch on the amp do? Does it simply reverse polarity of speaker leads, electronically, or can it be used to help remedy phase cancellation problems (i.e. ports on an opposite plane from the sub, sub positioning cancellation problems etc).

I'm trying to determine the positioning of my sub box in relation to the tailgate of my Suburban. I've heard and read that facing the subs toward the tailgate, with the enclosure "close" (no closer than 1 port width) to the tailgate offers the best, in-vehicle bass, with minimal cancellation vs. the same enclosure positioned at the back of my 3rd row seat (apx 2' away from the tailgate). Thanks in advance, gents. Any help will be appreciated.

90 Civic DX Hatchback- 135 amp alternator

92 Suburban - 200 amp alternator

Stereo rebirth, coming soon. . . .

Back to Top

Search for other posts by 90s civ and sub

swerve

Copper - Posts: 149

Joined: January 10, 2007

Location: Oregon, United States

Posted: January 18, 2007 at 10:49 AM / IP Logged

if it is just a switch it should reverse the polarity, if it is a pot then it acts kinda like an adjustable delay so you can adjust up to 180 degrees of the waveform, this would allow to combat slight cancellation problems but not poor placement or design of your box

git yer swerve on!

Back to Top

stevdart

Platinum - Posts: 5,816

This member has made a donation to the12volt.com. Click here for more info.

This member has been recognized as an authority in Mobile Audio and Video. Click here for more info.

This member consistently provides reliable information

Joined: January 24, 2004

Location: Pennsylvania, United States

Posted: January 18, 2007 at 10:19 PM / IP Logged

I agree. Good answer, swerve. The switch in question simply reverses polarity, but that reversal of polarity CAN help remedy cancellation problems with other speakers in your system. For example, the fronts mids which share some higher sub/lower mid cycles with the sub. But as swerve said, it won't fix design deficencies within the sub itself.

If you can possibly design your box so that you have placement options, do so. Experimentation of placement is the key to success in every install.

And to add: EVERY sub should be tried with the switch in both polarities after final positioning. One will sound better than the other to the person in the driver's seat, so use that position.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Back to Top

90s civ and sub

Member - Posts: 22

Joined: December 31, 2006

Location: United States

Posted: January 19, 2007 at 11:05 AM / IP Logged

Thanks for the help, guys!

90 Civic DX Hatchback- 135 amp alternator

92 Suburban - 200 amp alternator

Stereo rebirth, coming soon. . . .

Back to Top

Sorry, you can NOT post a reply.
This topic is closed.

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Amp phase control switch

Sorry, you can NOT post a reply.This topic is closed.

Sorry, you can NOT post a reply.
This topic is closed.