electrical interference on power cables?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=97517
Printed Date: April 25, 2024 at 11:30 PM
Topic: electrical interference on power cables?
Posted By: digdug18
Subject: electrical interference on power cables?
Date Posted: September 28, 2007 at 7:20 PM
Will this work? https://cableorganizer.com/metal-braided-sleeving/ I want to wrap my 4ga power line in it, to minimize the electrical interference when I run the line in my teg. Should I do the same thing to the speaker cables I'm running as well?? Andrew
Replies:
Posted By: haemphyst
Date Posted: September 28, 2007 at 8:29 PM
Work for what? You won't gain anything on power or speaker leads, and it'd be debatable as to whether you gain anything on signal leads. It'll certainly LOOK cool, though.
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It all reminds me of something that Moličre once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: digdug18
Date Posted: September 28, 2007 at 9:51 PM
Its gonna be under the carpet, you wont see it. I'm trying to cut the electrical interference that the power going through the 4ga power cable produces, and causes problems with the input cables of the amp, if run too closely together... I'm not really concerned with the expense, I'll only need a couple of feet of it, where the input wires are close to the power wires by my passenger seat. Andrew
Posted By: audiocableguy
Date Posted: September 29, 2007 at 9:50 AM
Are you trying to solve a problem or prevent one? Run your signal cables down one side, power down the other and if they cross do so at 90deg. If you have decent RCA cables you shouldn't have a problem.
Posted By: DYohn
Date Posted: September 29, 2007 at 10:21 AM
Adding that product on a power wire will do nothing electrically useful in a car audio application. It will help protect the cable from mechanical damage. ------------- Support the12volt.com
Posted By: tcss
Date Posted: September 29, 2007 at 11:49 AM
OK, one last time. Power cables do NOT produce noise when run near or over RCA cables.
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There is no such thing as free installation!
Posted By: dwarren
Date Posted: September 29, 2007 at 12:42 PM
tcss]O wrote:
, one last time. Power cables do NOT produce noise when run near or over RCA cables.
Funny you say that, I just got through re routing RCA's on a Pilot that I had originally run with the power wire only to have terrible noise. So I draped a set of rca's from the deck to the amp and low and behold, no noise!. I ran the rca's down the center console away from the power wire and it proved to be noiseless. -------------
Posted By: tcss
Date Posted: September 29, 2007 at 1:17 PM
Dan you remember that thread right? I bet your original RCAs were run close to the car's ECU
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There is no such thing as free installation!
Posted By: techman93
Date Posted: September 29, 2007 at 1:21 PM
Power wires will conduct some sort of noise due to the current running through it, sort of like a small magnetic field around the diameter of the cable. I would believe people when they tell you not to do something, it usually is because of lots of experience in the field. When installing audio systems I run power cable down same side that the battery sits and then signal cable down the opposite side. There may be special circumstances where that may not be an ideal set up but rule of thumb is at least a foot to two feet apart if running parallel to each other. A 90 degree bend if they do have to cross and make sure that you secure with duct tape to the floor under carpet.
Posted By: dwarren
Date Posted: September 29, 2007 at 1:46 PM
tcss]D wrote:
n you remember that thread right? I bet your original RCAs were run close to the car's ECU
Perhaps, as they did run under the dash, but I didn't see an ECU or BCM's as far as i can remember...How can I forget that thread! What ever happened with those Focal's? -------------
Posted By: tcss
Date Posted: September 29, 2007 at 3:22 PM
Guy found out that they were 4 grand a pair and almost CHOKED lol. Dan have you ever done a big job (deck, amps, comps, sub box ) on a 360 Modena? Anything I should watch out for?
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There is no such thing as free installation!
Posted By: dwarren
Date Posted: September 29, 2007 at 8:36 PM
I have some experience with those cars. It's a standard Benz type radio plug. I use blue painters tape around the radio opening as the dash is extremeley prone to sractches and getting a new dash would be a financial nightmare. The doors are tricky to remove, and equally so to put back on. They are essentially hand made so lining up screw holes can be frustrating (many are "hidden"). Also the door handle cable is tension set, so that has to be readjusted and that usually takes two people. Getting from the front cargo area is fairly straight foward, I believe there is a large grommet near the battery. If you are doing a sub, which almost Ferrari owners go for, the space between the two seats usualy has an enclosure for two 5" subs, but if you are confident in fiberglassing, I have seen a beautiful enclousre with a single 8" wraped in factory Ferrari leather! (I may still have the picture some where) Now if I remember correctly, these cars have a complicated factory alarm/immobilizer that will lock up if power is lost, so...be sure not to disconnect the battery or let it go dead. Other wise a trip to the dealer will ensue. The previous shop I worked for had a Ferrari tech come over after hours to assist him, it was money well spent, as he also did Passport front and rear laser/radar detectors, which meant the front bumper was removed!! (that was scary) Good luck! Sorry. digdug has officially been thread jacked! -------------
Posted By: stevdart
Date Posted: September 29, 2007 at 8:56 PM
Depending on who's doing the threadjacking, sometimes it's an honor!  ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: tcss
Date Posted: September 29, 2007 at 10:19 PM
Thanks, Dan that's pretty much what I figured. The real tip was not disconnecting the battery, saved my azz. I going to put (2) JL 8" W3V3s in a custom glass enclosure behind the pass seat. Alpine PDX 1.600 and PDX 4.100 bi-amping a cheaper set of Focals. Will show the car at a Cal. Ferrari show in Avila Beach in October.
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There is no such thing as free installation!
Posted By: dwarren
Date Posted: September 30, 2007 at 12:44 AM
stevdart wrote:
Depending on who's doing the threadjacking, sometimes it's an honor!
Why, thank you sir! Good times Bob, the prior installs we either used Rainbows or Focals, but the Focals really shined, they were the top of line ones (right before the BE series) with the chrome baskets, that midbass was so punchy, and those tweets were damn precise. Better have some pictures up for this install! -------------
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