Welcome to Canadian Car Audio - Canada’s #1 Car Audio Forum   Members
 

Reply
 
LinkBack Thread Tools Display Modes
Old 05-24-2008, 03:29 AM   #1 (permalink)
How 2 tell if a Tweet is out of Phase
CCA Back Bacon
 
Join Date: Apr 2008
Location: Alberta Calgary
iTrader: (0)
Posts: 21
Hey guys...... Im just wondering.....Im just finishing up an install of some Focal VRS shallow mount 6.5 comps...... And i swere the high end sounds muffled ...Im thinking maybe the tweets might be out of phase wired up back wards...there was no markings for _+ on the tweets just a red line on one side of the wire that is factory soldered on them.....do you think Focal uses the standard ...As in the side with the line is negative....

thanks....Sounds mighty Newbish But you never know how those french are thinking..
RigRocket is offline   Reply With Quote
Old 05-24-2008, 10:01 AM   #2 (permalink)
CCA Hoser
 
grep's Avatar
 
Join Date: Mar 2008
Location: Vancouver, BC
iTrader: (0)
Posts: 96
I don't know for sure but I would say the red line is indicating positive. Most stereo test discs have a phase test on them.
__________________
My Car Domain page
2006 Nissan Frontier Nismo 4x4
a/d/s
Alpine
JL Audio
StreetWires
__________________
Sep 21, 2008
604 Autosound (IASCA Event)
2nd Place - SQi Rookie

Aug 10, 2008
Andre's Audiotronic Kamloops
3rd Place - SQ Rookie

July 20, 2008
Andre's Audiotronic Penticton
1st Place - SQ Rookie
3rd Place - Best SQ

June 15, 2008
Sounds Good Auto (IASCA Event)
2nd Place - SQi Rookie

May 18, 2008
Absolute Car Audio
1st Place - SQ Open Class
grep is offline   Reply With Quote
Old 05-24-2008, 11:48 AM   #3 (permalink)
Moderator
 
AAAAAAA's Avatar
 
Join Date: Mar 2001
Location: Québec Gatineau
iTrader: (2)
Posts: 1,117
Red line = positive

All in phase doesn't always make for the best fit.
Switch polarity and see what sounds best.
__________________
Please SQ'se my SPL'ing
AAAAAAA is offline   Reply With Quote
Old 05-24-2008, 01:02 PM   #4 (permalink)
CCA Golden Toque
 
Join Date: Jan 2005
Location: bc delta
iTrader: (5)
Posts: 4,281
Images: 20
are thay ebay focals ?
if so you might have a nock off
if you have iasca cd has it on it
__________________
EVERY FAMILY HAS A RETARD IN IT. IF YOU THINK THAT YOURS DOESNT HAVE ONE, THEN ITS PROBABLY YOU.
zzzzzzz is offline   Reply With Quote
Old 05-24-2008, 05:23 PM   #5 (permalink)
Supporting Member
 
avidedtr's Avatar
 
Join Date: Dec 2006
Location: Ontario GTA
iTrader: (6)
Posts: 637
Images: 20
Red line is %100 positive - I put mine out of phase and the sound is more direct!
__________________
7200mkII ~ Dual 3sixty.2 ~ Tri LRx ~ 4way K2P ~

avidedtr is offline   Reply With Quote
Old 05-25-2008, 01:13 AM   #6 (permalink)
Yankee
 
JohnVroom's Avatar
 
Join Date: Oct 2003
iTrader: (0)
Posts: 2,354
... the goal is to have the sound from each driver arrive in phase (the phase the recording was made at) at your ears. This may require swapping phases of individual drivers in the car to achieve but to answer the question...

out of phase tweeters are tonally OK (not quite right and cant really describe it) BUT the imaging is destroyed when it is out of phase ...the sound instead of filling the front stage tends to localize near the tweeters. swap the phase and see what I mean.
__________________
MECA SQ

www.cardomain.com/memberpage/769882

I don't know what your problem is, but I'll bet it's hard to pronounce.
JohnVroom is offline   Reply With Quote
Old 05-25-2008, 03:21 AM   #7 (permalink)
CCA Back Bacon
 
Join Date: Apr 2008
Location: Alberta Calgary
iTrader: (0)
Posts: 21
hmmmm thanks for the replys.... yeah its just i dont remember seeing any lines on the tweeter wires on my set of K2P..they indacate on the tweet itself..but i know the normal code is the wire with the line on it is negative...no i dont have a IASCA disc...no they are not ebay focals lol.....And actually iam very suprised of the sound though..Never Tryed any comps in the pollyglass line...But wanted a shallow mount mid in this install.... I figured they would be nowere close 2 my set of K2P in a previous install..Especially in the midbass output and clarity at high levels....But i must say very impressed, but I put alot of work into the doors Deadning and sealing.. running off a Focal 2.150
RigRocket is offline   Reply With Quote
Old 05-25-2008, 03:51 AM   #8 (permalink)
CCA Golden Toque
 
Join Date: Jan 2005
Location: bc delta
iTrader: (5)
Posts: 4,281
Images: 20
what do you have the cross overs set at ?
__________________
EVERY FAMILY HAS A RETARD IN IT. IF YOU THINK THAT YOURS DOESNT HAVE ONE, THEN ITS PROBABLY YOU.
zzzzzzz is offline   Reply With Quote
Old 05-25-2008, 08:12 AM   #9 (permalink)
Yankee
 
JohnVroom's Avatar
 
Join Date: Oct 2003
iTrader: (0)
Posts: 2,354
I didn't address the muffled sound...

I generally don't think muffled when I think Focal so something is wrong, I assume the previous speakers didn't sound muffled. So most likely it is a wiring or a speaker issue. swap out the speakers (yeah I know a lot of work) and see if the old speakers STILL sound unmuffled if they sound good then I would say the Focals are monkeyed up. If they do sound muffled then you have to check everything upstream including the wiring (which is the most likely point of failure).

Frankly it sounds as if one or both tweeters aren't getting a signal
__________________
MECA SQ

www.cardomain.com/memberpage/769882

I don't know what your problem is, but I'll bet it's hard to pronounce.
JohnVroom is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

» Advertisers









advertise here

» Recent Threads
Alpine 7904
Last post by Jaxom
Today 10:36 AM
cap and coil or crossover
Last post by grep
Today 10:12 AM
Loans | Cheap Car Insurance | Mortgage Calculator | Modded Xbox | Mobile Phone

Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.2.0
Canadian Car Audio
Page generated in 0.59463 seconds with 11 queries