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Your cart is empty.This Electronic Noise Supression Filter is designed to actively cleanse noises generated by sources such as generators, alternators and inducted radio frequencies from the positive voltage line in mobile audio systems. Active filters are more accurate and responsive than passive filters, are easy to install and are cost effictive.
Zach Carpenter
2025-09-06 12:04:36
So I have a 2006 Chevy Trailblazer with the not so popular factory Bose system. Shortly after upgrading the stereo to a more modern unit, the alternator whine started in the front tweeters, speakers faded on their own (front to back and back to front), speakers popped and crackled, etc. just had poor audio quality. After much research I figured it was a grounding issue so I started looking at filters, like this one. I was hesitant from the 3.5 star reviews but bought it anyways. Installed it today (easy) and BOOM! Audio quality is now perfect, all my audio issues are gone. I’m extremely pleased with this product and the results! Buy it!
Dogsbody
2025-08-22 18:35:18
Years ago I installed a Rostra electronic cruise control on my 2004 Kawasaki. It has never worked 'right'. When it would lock up it would work as advertised. But whenever I came to a complete stop, then got going again, it simply would not work. I discovered that the only thing that would reset it was to come to a complete stop again, turn the motor of/on, then (most of the time) it would work again. A real PITA. So the other day I decided to try and fix it (again). On the advice of someone who know more about electricity than I do, I began research 'noise filters'. Then read a post here about a guy who installed a radar detector on his motor cycle. Would not work until he installed this device. Hmmmm. So, (still very skeptical) but for 7 bucks I can try it, I installed this device. BINGO! I just got back from an exhaustive test and COULD NOT MAKE IT FAIL!But remember... green to power source, red to device, and ground it at the same point you ground your load.
J. Claeys
2025-08-09 16:27:23
The wiring diagram packaged with it correct ... item did not work when wired per instructions. Same instructions were published on Axxess' website. Contacted Axxess for assistance who gave me new, different instructions. In this day and age it is not difficult to keep up to date information on website. Just laziness not to do so and disinterest in customer's experience with their products... hence 3 stars. Need to be sure the ground connection is as close to the power feed on the powered device (e.g. stereo head unit) coming from the AX-ANR1000 to eliminate/reduce to minimum any ground loops. Nothing in instructions about this. Any separation of these connections will create a ground loop that will pick up ignition noise and pipe it through the stereo unit. The longer the ground loop, the louder the noise. This aspect is critical to performance of this device, but no mention of it in packaged instructions nor in any technical information on mfr's website. Once wired properly it performs satisfactorily.
Hollend Bishop
2025-07-17 15:28:12
When I first hooked it up I put inline with the 12V ACC (tells the radios to turn and off via the key). Didn't realize this until trying it out. So I then hooked it inline with the battery power but then the radio wouldn't go on. Checked voltages and the output was only .6V. So to recap, when hooked up to the 12 ACC the output was 12V. Then when hooked up to the battery I only got .6V. Disconnected from the car and used a spare 12V battery and poked around - still .6V output. I decided to take the cover off and look for a bad solder joint but everything looked OK. Checked resistances and voltage , etc. No go. But when wiring in the first time I noticed I had bundled everything together and when I put it all back together didn't re-bundle and the whine is much less... so maybe it worked after all.
Travis Nolen
2025-07-02 16:47:15
Another review mentioned this and I thought I would give it a shot. The instructions should include these options.I have a 1989 Toyota pickup that I just replaced the 2nd aftermarket stereo in 34 years because it finally failed. I thought that the AX-ANR1000 Inline Power Noise Filter needed to be wired up to the accessory power wire of the Toyota wiring harness as this is wired to the red wire of the stereo harness. I wired it this way and it did nothing for the dreaded alternator whine. I the other reviewer’s post he said it worked when he wired it to the yellow wire (12 volt from battery) – normally used for the stereo memory and clock. I wired the AX-ANR1000 to the yellow and the ground to the chassis and the alternator whine was gone!Make sure you try wiring the Noise Filter to the accessory wire first. If that doesn't work wire it to the 12 volt battery wire. This worked 100% for me – YMMV.
Steve
2025-06-22 11:26:19
Worked perfect for me. Used this for an android head unit in my 330ci. Had an awful noise from the alternator. No longer has any. I know some reviews go both ways, but for me it was perfect. The instructions can be a little confusing. I had to switch the wires around. I believe the green goes to the power harness and red to the stereo. Or the other way around. If you hook it up incorrectly, it just won’t work. So good luck.
Y. Katz
2025-05-28 11:18:19
My alternator noise is coming through my car bluetooth adapter. I know it isn't a ground loop issue since the noise changes with engine speed, but I tried a ground loop isolator anyway and it didn't help. I was hoping this would get rid of the noise, but though it helps a little bit, the noise is still pretty bad. (I also know it is powerline noise and not a problem with the bluetooth unit because if I power the bluetooth off a separate battery, it sounds crystal clear, but if I connect the output to separate speakers, I do get noise even with this filter.)
Leonid Knizhnik
2025-05-03 16:38:13
I drew the schematic diagram of the device. It is very simple active filter with the usage of 2 silicon npn transistors 2N3055 installed without hit sink. According to the spec it could hold the current of 30 Amp each. But in this case I think the max current could be 10 amp. This filter has voltage stabilization 12V with stabilitron diode (as you can see on diagram. You can significantly increase the effectiveness of this filter if you connect one more capacitor between green and black wire. If you need to change the voltage of stabilization you need to switch stabilitron to desirable voltage. For 5 volt I use 1N4733. Have to mention that green wire is hot + input, while red is hot + output. Black is negative ground.
zikmir
2025-03-26 10:32:00
Tough it didn't work for me and the packaging had different information such as reading 35 watts while the ad says 35 amps which is a huge difference and can result in a fire! The seller refunded without even asking for it back so i give it 5 stars.
Jerry Neumann
2025-02-19 16:16:19
Easy to install
Ryan Olinski
2025-02-14 11:57:49
Does nothing good that's for sure. Figure out your ground and noise issues properly.
David Reynolds
2025-01-17 21:35:23
It cut down the noise and with a ground it still didn't alluminat the sound.
Ed
2025-01-13 11:04:30
I didn’t work , but maybe had it wired wrong .
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