3 out of 5

Didn't work

Written By Ben S, Searcy, AR on Sunday, March 10, 2013

Crutchfield Customer Review (What's this?)

 

Sorry to say that this didn't work in my application. I can't completely blame this unit as I later found out it was a problem in my headunit but I can't give it a better rating because I don't know how well it would've worked.

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5 out of 5

Works

Written By johnny_n, Kansas City, Mo. on Wednesday, January 30, 2013

Crutchfield Customer Review (What's this?)

 

Had a source pop problem after installing a new receiver and these did the trick.

Pros:

Works, easy to install

Cons:

none

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5 out of 5

Solved my problem

Written By Dan, Missouri on Thursday, January 24, 2013

Crutchfield Customer Review (What's this?)

 

My Crutchfield advisor suggested adding these to my newly installed system as I was experiencing a loud popping sound over my speakers when I changed tracks on the ipod or CD's. The new installation had upgraded the head unit and speakers but still utilized the factory installed Bose Amp. These solved my problem.

Pros:

Performed as advertised

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5 out of 5

Gets the job done!

Written By Anonymous, New York on Monday, December 31, 2012

Crutchfield Customer Review (What's this?)

 

If you are having alternator noise chances are this will work for you. I had this very annoying squeal that would adjust as I stepped on the gas. As soon as I installed this the noise was gone. But the thing is I didn't connect the ground that you was supposed to. The ground made it worse for some reason but no the less it still worked without grounding the RCA.

1 out of 1 people found this helpful

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4 out of 5

If you have a Corvette, Order these with the HU

Written By Gotts have these for a Vette, Norcross, GA on Monday, October 22, 2012

Crutchfield Customer Review (What's this?)

 

Crutchfield sent me a pair of these to solve my thump problem in my 92 Corvette convertible. Apparently ground loops are to be expected with a Vette installation. Would have been nice to have been told that when I ordered. I would have paid for them and saved a few days of frustration.

Pros:

Work. Simple to install.

Cons:

Crutchfield should change their install guides to suggest these with a Vette install.

1 out of 2 people found this helpful

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4 out of 5

Worked

Written By Flycast47, Aledo, TX on Tuesday, July 17, 2012

Crutchfield Customer Review (What's this?)

 

Not much to it they effectively eliminated the ground loop POP.

Pros:

Worked

Cons:

Slightly bulky

1 out of 1 people found this helpful

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5 out of 5

Fantastic!!!!!

Written By Mike, Panama City on Wednesday, April 25, 2012

Crutchfield Customer Review (What's this?)

 

This little device is amazing!!!! I was having alternator noise in my car after installing an eq and xover. I tried grounding the rca's and changing the head unit and eq's ground, but none worked. Immediately after receiving my Crutchfield order, I installed this device between the head unit and eq's signal path and..........Wallah!!!!!!!! All the alternator noise was GONE! Magic.

Pros:

Works great!

Cons:

Can slightly reduces gain, but you can compensate by readjusting your amp.

2 out of 2 people found this helpful

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5 out of 5

Just worked

Written By Brandon, Sterling, VA on Monday, April 16, 2012

Crutchfield Customer Review (What's this?)

 

Crutchfield support is genius. They sent me two of these to solve my issue with my new head unit where I was hearing alternator whine (a high pitched noise that tracks engine rpm) through the speakers. These killed the noise.

Pros:

Great product. Works as advertised. Also, Crutchfield tech support is second to none.

3 out of 3 people found this helpful

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2 out of 5

no real difference

Written By Bake, Lexington, KY on Monday, April 02, 2012

Crutchfield Customer Review (What's this?)

 

Probably not the product's fault, but this must not have been what my system needed because there is no discernible difference. So, just because your system has a high frequency whine that changes with engine speed, this may not be the answer. I coupled it with the S25A unit - and it apparently is not what my system needs (i.e., inexpensive Pioneer receiver, clarion 7-band equalizer, Boss 4-channel amplifier, four 2-way 6.5" pioneer speakers in an old Corvette). I have it installed between the receiver and the equalizer - so maybe if I get an additional unit and try them between the equalizer and the amp, I would get better results?

Pros:

Easy to hook-up

Cons:

doesn't seem to make any difference for my system

Crutchfield response on Tuesday, April 03, 2012

We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

2 out of 2 people found this helpful

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5 out of 5

Wish I had this in the begining

Written By JoeA, Orange County, CA on Wednesday, March 14, 2012

Crutchfield Customer Review (What's this?)

 

Got my unit all installed, kept getting a pop when switching audio sources or shutting off, everyone online keep saying inline filter. I kind of wondered if so many people had this issue why was this not included in my order?

Pros:

It just works, no more pop!

Cons:

Should have been included in my order, then I would not have to pull it all apart again.

5 out of 5 people found this helpful

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5 out of 5

RCA Gound Loop Isolator

Written By Nicky C, Llano, TX on Sunday, February 12, 2012

Crutchfield Customer Review (What's this?)

 

Had a problem with new receiver making a popping sound when changing tracks on the CD Player. These took all the noise out, and they were easy to install.

5 out of 5 people found this helpful

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5 out of 5

Ah, just what I was looking for

Written By DanielC, Sausalito, CA on Wednesday, January 25, 2012

Crutchfield Customer Review (What's this?)

 

What started as a simple plan to improve my car's sound system began to unravel as a stressful, time-consuming tasks with more than I can ask for. Recently, I installed a Kenwood KDC X395 headunit along with a new subwoofer and amp. After the installation was complete, to my disdain, there was very noticable humming and alternator noise coming through the speakers. The car audio shop pretty much told me I would have to bear with the noise in a polite way. So I did, for two weeks until I could not bear it any longer. That's when I called in to Crutchfield to help me resolve my specific problem. The customer service rep layed out my options for me, with me ultimately deiciding to take the ground loop isolator route. Based on the previous reviews, I was uncertain about the efficency of this product. Preparing myself for the worst, I set a low expectation that this product to work only partially or not at all. To my surprise, it completely took out all unwanted noises. All I did was disassemble my center console, connected to head unit, reattached my center console taking me less than 20 minutes. Now my audio system is officially complete, accompianied by zero interference, and I am able to fully appreciate the clean sound I have been delayed for so long.

Pros:

Resolved my alternator whine, hum, and miscellaneous noise. Quick and easy install.

Cons:

I have nothing to complain about.

9 out of 9 people found this helpful

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3 out of 5

Sub pops? This eliminates it, but.........

Written By Brice, Phoenix, Az on Thursday, November 17, 2011

Crutchfield Customer Review (What's this?)

 

This units says that it adds 1.3 dB of gain. Honestly, I hate to say it is a lie, but it actually cut my gain by what seemed to be half. My sub went from "awesome thumping" to " gentle bass" as soon as I installed it. As a sanity check, I un-installed and reinstalled it 4 times and compared the sound output each time, same song, same settings. Yup, definitely a decrease in the sound. Needless to say, I will not be installing it. My sub came with a remote gain control and I found out that you can just turn it all the way down before each circumstance above, to avoid the popping. I might even send in my sub to the MFG to have them adjust it for FREE.

Pros:

I had an annoying pop from my powered sub every time that I would turn off my stereo, turn on my stereo, switch input sources (CD, USB, Radio, etc.), volume from 1 to 0, and volume from 0 to 1. It was pretty disturbing. I installed this unit and BAM the popping was never heard of again.

Cons:

It cut my signal gain, regardless of what it says (adds 1.3dB).

3 out of 5 people found this helpful

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5 out of 5

Works as described

Written By Ivan T., SLC, UT on Thursday, November 17, 2011

Crutchfield Customer Review (What's this?)

 

This is just a band-aid for the problem but it does work and it works GREAT! I needed 2 of them for my car and as soon as I installed them the sound got as crisp as it could be. I have a 96 Nissan Maxima with the stock BOSE system in it. Upgraded the HU to Kenwood Excelon x595. The HU is awesome and it works great. however, I got some noise from the alternator when the car is started. The PAC SNI-1 units took care of that in an easy and lazy way. My problem was probably with the actual ground connections but to make them better it required a lot of work. The SNI-1 did it for me and I am happy of the results.

Pros:

Works great and I got a good price for it

Cons:

n/a

2 out of 2 people found this helpful

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5 out of 5

FINALLY GOT RID OF THAT ANNOYING ALTERNATOR WHINE!

Written By Ray, New York, New York on Thursday, November 03, 2011

Crutchfield Customer Review (What's this?)

 

I installed this PAC SNI-1 RCA Ground Loop Noise Isolator in my wife's near-classic 1990 Toyota Celica GT-S as soon as I received this product in the mail. After following the Crutchfield flowchart for isolating the source of the alternator whine, I narrowed my focus down to the patch cables connecting the subwoofers to the amp. This little device completely eliminated that annoying alternator whine! I did notice that the subwoofers lost some of their "thump" and bass quality after installation, but I simply went to the amp and adjusted the subwoofer gain controls upward slightly. And - VOILA! Our music is rich, clear, and enjoyable again!

Pros:

Easy plug and play installation.

1 out of 1 people found this helpful

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2 out of 5

eliminates noise, but also devastrates output!

Written By DMB2STEP, Wells, MN on Friday, September 16, 2011

 

This product came in nice packaging, and felt pretty solid. I was going to use it with the intention of killing a nasty hum &bumping noise I was getting out of my subwoofers everytime i changed sources on the HU or skipped through CD tracks. Well this thing killed the noise alright, but it also lowered my subwoofers output about 75%!!! Called product manufacturer and they claim this product is not intended to be used on a subwoofer line, so be aware before you purchase.

3 out of 3 people found this helpful

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5 out of 5

10 minutes to perfection

Written By Gabrial, Winnipeg, MB on Friday, August 05, 2011

 

Like the title says, 10 minutes to perfection. I purchased a used car with a very badly installed sound system. After correcting the mistakes of the previous installer, there was still a bad alternator whine whenever the engine was on.

5 minutes to remove my center console, shift knob and dash console, 2 minutes to hook the rca's into the isolators (one set each for rears and front, will order another when it comes to adding sub), and hook the isolator into the head unit, and 3 minutes to double check all of my connections and put my consoles back together and no more alternator whine.

Best money I've ever spent in my life.

2 out of 3 people found this helpful

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5 out of 5

PAC SNI-1

Written By Anonymous, cincinnati,oh on Wednesday, June 29, 2011

Crutchfield Customer Review (What's this?)

 

Worked great & easy to install had my doubt's but it removed all my noise from speakers.

2 out of 2 people found this helpful

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5 out of 5

PAC SNI-1

Written By Anonymous, Centerton, AR on Wednesday, June 01, 2011

Crutchfield Customer Review (What's this?)

 

It was easy to install and it removed ALL the noise from both my speakers and my subs. Works perfect.

2 out of 2 people found this helpful

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5 out of 5

Very good product

Written By Mack, New Orleans on Wednesday, June 01, 2011

Crutchfield Customer Review (What's this?)

 

I had an annoying pop coming through my woofer every time I changed sources on my head unit, radio, CD, DVD etc. When I installed the PAC SNI-1 it silenced that pop completely. Very easy to install thanks to Crutchfield support.

1 out of 1 people found this helpful

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