|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
70.193.4.233
In Reply to: RE: JBL 4313 question posted by jimbill on June 16, 2014 at 11:22:16
I don't know about that model, but a lot of JBL speaker components use Black for positive and red for negative.
A 1.5V or 9V battery will tell you. Connect it so the woofer gives positive cone excursion (cone jumps out).
The terminal that is connected to the positive battery terminal is positive or "in phase".
Follow Ups:
Unless you know the phase shift of the entire system including the source material, it is at best an academic exercise. Many as invert the phase 180 degrees that when combined the the 4310 would then be in-phase whereas using the battery and reversing the polarity of the terminals would possibly result in a reverse phased system.
While reversing the phasing between the left and right speakers is quite noticeable, there is a huge disagreement when it comes to inverted phasing of a system in comparison to the source. Years ago in doing testing with systems and panels never did any member make any reference or comment related to the matter.
Also, beware that speaker manufacturers sometimes in designing multi-driver systems will invert the phase of one of the drivers as part of the design. It only adds to the confusion.
Don Brian Levy, J.D.
Toronto ON Canada
Many, MANY! designs invert one or two drivers.
I think you are on the wrong path playing with the wiring. First try cleaning all the connections, recapping and maybe even a better padding resistor.
charles
PS - I believe the 4313 is a studio monitor design. It was voiced for a flat FR response. Unlike many of the other speakers of it's day.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: