Audio Systems Find answers to all of your stereo, speaker and other audio technology questions here.
Sponsored by:
Sponsored by:

Soundstream PN4.520D FM EMI reduction

Thread Tools
 
Search this Thread
 
Old Jun 2, 2013 | 11:27 AM
  #31  
Gone Riding's Avatar
Gone Riding
Thread Starter
|
Intermediate
Joined: Aug 2012
Posts: 36
Likes: 0
From: Austin, Texas
Default

Originally Posted by UltraNutZ
This was before I met Mr Genius up there (Gone Riding) and he figured out the whole power/emi thing.
I appreciate the complement, UN, but I'm no genius. This issue just happened to be in my wheelhouse. And don't give me too much credit until someone else with the problem can document the improvement.
 
Reply
Old Jun 2, 2013 | 11:34 PM
  #32  
sl33py's Avatar
sl33py
Tourer
Joined: Mar 2013
Posts: 297
Likes: 1
From: Pacific Northwest
Default

Originally Posted by Gone Riding
I'd be glad to send you a couple of the small ones (0.5" inner diameter), Sl33py. I ordered something like 10 of them since they are so cheap relative to the shipping charge. Just PM me your address. They're too cheap and small to mess with payment, and I don't need any of the big ones. I don't expect to do any more.

Since I had extras, I put one on my hand-made RCA cable in addition to the power and remote. The next time my fairing is off I'd be tempted to put one on the rear speaker wires too. I suspect a little noise is also getting out that route.
I'll send you one or two anyway. If you want you should be able to run all your power and ground AND rem if you want since they are .25" larger inner diam.

PM'ing you my info - make sure and give me yours and i'll drop it in the mail this week.

Rob
 
Reply
Old Jun 5, 2013 | 07:05 AM
  #33  
joemar's Avatar
joemar
Intermediate
10 Year Member
Joined: May 2013
Posts: 25
Likes: 3
From: Portugal
Default

Originally Posted by sl33py
Going to try this on my brother's bike after confirming how much the Amp is interfering.

Ordered the hard to find Fair-Rite 2631801202 - .75" opening, .5" long, little over 1" across:



Will see how many wraps i can get w/ 8g through one. looks like (due to min order) i will have a few extra... like 23... Might throw them on for sale for anyone else who needs one. 5$ and send SASE?
I'd like to buy one from you. New to the forum so I can't PM you. Just let me know how to get you the money for it.
Z
 
Reply
Old Jun 6, 2013 | 06:47 AM
  #34  
ThaGlyde's Avatar
ThaGlyde
Road Master
Joined: Mar 2009
Posts: 795
Likes: 1
From: Richmond, VA
Default

I have 8guage wires. Anyone have any extras of the larger one. you can shoot me an email at gasneed@gmail.com and i can pay through paypa. I also bought a 4.320 that i gave to my step mom and i could hear the radio much better on that one. Would i still need to go through this process?
 
Reply
Old Jun 6, 2013 | 08:06 AM
  #35  
UltraNutZ's Avatar
UltraNutZ
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
Default

if FM isn't an issue with the 4.320D I wouldn't fool with it.
 
Reply
Old Jun 6, 2013 | 11:05 AM
  #36  
Guy Reynolds's Avatar
Guy Reynolds
Novice
Joined: Mar 2013
Posts: 20
Likes: 0
From: Eaton Rapids, Michigan
Default

I’m curious about something, does the FM problem have anything to do with how the amp was mounted?

Do the people that mounted their amp on a metal bracket have less of a problem than others who mounted the amps in some other fashion?

Or is it strictly an amp / power issue?

Mine was installed last night and I didn’t get to do a test ride, but I was closed up in an insulated pole barn and FM seemed fine, (bike running) no outer fairing and about 15 cable ties to put back on.

I want to get it outside and reset the gains, I was going deaf in the barn.

And again Nutz thanks for the help, this thing is way louder than I expected.
 
Reply
Old Jun 6, 2013 | 12:15 PM
  #37  
UltraNutZ's Avatar
UltraNutZ
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
Default

nah, you either have the issue or your don't. The EMI is radiated out of the power supply on the amps back through the power wires.
 
Reply
Old Jun 7, 2013 | 07:04 PM
  #38  
sl33py's Avatar
sl33py
Tourer
Joined: Mar 2013
Posts: 297
Likes: 1
From: Pacific Northwest
Default

Hey guys! Did some tinkering this afternoon and wanted to show the differences in ferrites.

My 8g wire is about 5/16 or 7.5mm:



I mention that specifically because getting 3 wraps like Gone Riding mentions is tough. Definitely need 2 ferrites to do so.

Not easily, but I was able to get 2 wraps on one (which may be enough to help) - both power and ground 8g:


Here's the 3 ferrites recommended here:


Thanks GR for the two smaller ones! (you have a package on the way sir!)

Inner diameter biggest to littlest by part #:
.75" (what i have) - Fair Rite 2631801202
.54" (original recommended - likely work well w/ 10g) - Fair Rite 2631101902
.37" (smaller one GR sent - likely only work with small wires) - Fair Rite 2631665702

HTH!

Rob
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Jun 7, 2013 | 07:08 PM
  #39  
sl33py's Avatar
sl33py
Tourer
Joined: Mar 2013
Posts: 297
Likes: 1
From: Pacific Northwest
Default

Wire consumption estimates - i unwrapped the ferrite afterwards, and with the .5" long ones i have i guesstimate about 7-9" used of each power and ground cable w/ 2 wraps, so figure in another 3-4" for 3 full wraps!

With the longer 1" ferrites - i'm guessing it will be quite a bit more (maybe not quite 2x). Just food for thought.

Will be doing my brother's bike next and we'll see if we can do it without pulling a new power wire. Ground will definitely need a new wire.

Kinda lame, but hey - better FM reception is worth it!

HTH!
 
Reply
Old Jun 7, 2013 | 08:36 PM
  #40  
Ryder7140's Avatar
Ryder7140
Intermediate
Joined: May 2013
Posts: 32
Likes: 0
From: Florida
Default

Where can I get a digital caliper like that. Never saw one read fractions.
 
Reply



All times are GMT -5. The time now is 12:51 PM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE