Question about BOSS AUDIO SYSTEMS Boss Ns2 Noise Suppressor Pedal

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I have NS-2 Noise Suppressor Pedal, this works fine but in some moment make a radio noise (hum) and the output signal comes down (like turns the volume to 0) ... I don't know what it is, I'm going to replace the power source in first step. Any ideas ? Thanks!

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The probable problem is poor connections at the input and/or audio output jacks.

Usually the power supply will fail either on or off which is sometimes cause by a bad input power jack.

In any case, the problem is likely internal and will require repair.

Posted on Aug 06, 2010

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1 Answer

My Boss RC-2 Pedal is having a problem with the output. With the volume turned up to max, the signal is suddenly extremely faint on can only be heard if there is silence in the room. Even the backing track...


Most PROBABLE is the output jack either has been broken (common due to mishandling and accidents with cables such as stepping on the plug while plugged into the pedal) or the soldering of the jack in the pedal has broken loose. Less common is a circuit board crack in the vicinity of the jack. Open pedal and inspect for the above suggestions.

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My boss metal zone pedal power light wont come on when i hook the ac adapter to it i get nothing but a hum and no output clean or distortion,then when i plug a 9volt battery in it gives only clean tone...


There is a switch contact that connects the battery when you unplug the AC adapter. These commonly get sprung and cease to make contact leaving the battery disconnected when adapter is unplugged, resulting in no power. Verify the battery is being connected and see if the unit works properly. If so the adapter is either the wrong one or defective.
In other words, there may be two problems.

Jan 30, 2011 | Boss Mt 2 Metal Zone Effects Pedal

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There is a constant loud hum/buzz whenever I turn the pedal on. With my Boss Mt 2 Metal Zone effects pedal. It happens whether or not the power supply is plugged in. Ive tried switching cables and...


First and foremost , check your signal chain. By that, i mean put the pedal aside, ...just unhook it and take it out of your signal path. Using the same cables , guitar , amp, other pedals - borrow a friends MT-2 if you can get one , and try THAT to see if THAT works , OR any other kind of distortion pedal. If another one works ok , it's YOUR MT-2. Boss pedals are pretty rugged , but sometimes the little actuator (on/off switch) underneath the treadle (where you push your foot down) will become faulty. That's a high-gain pedal - are you using a basic Strat or other single-coil pickup guitar? If so , are you playing close to any flourescent lights? SIngle coils are noisy around those lights. Will cause a hum / buzz if using a heavy dist. pedal. You can check that by moving around as you play.

Nov 02, 2009 | Boss Mt 2 Metal Zone Effects Pedal

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I don't know how to set my roland u-20 for using a hold pedal "Kurzweil". My hold pedal is new, but i can´t make it work.


The Roland requires a NORMALLY CLOSED contact and that usually cannot be changed.

You will need to reverse the contacts in your pedal to meet that requirement.

OFTEN the pedals have BOTH contacts and you just have to unsolder and move the wire to the opposite contact. This is a common problem

Oct 29, 2009 | BOSS AUDIO SYSTEMS Boss Ns2 Noise...

1 Answer

Boss noise reduction pedal stopped working for no reason at all. worked fine the day before, went to use today no power at all. it is run from an adaptor so its not the battery, any clue?


The power jack on MANY of the pedals are weak and a yank sideways can damage the jack or the board it is mounted on.

ANOOTHER problem is using an adapter with the wrong size plug. SOME plugs have a larger diameter hole and will work intermittenly.

Oct 05, 2009 | BOSS AUDIO SYSTEMS Boss Ns2 Noise...

1 Answer

How to set up with amp and distortion pedal


With everything switched off. I will surmise that you are using the onboard battery with the foot pedal and not a power supply.
1. Plug lead from guitar/instrument into INPUT side of pedal
2. Plug lead from OUTPUT side of pedal into amplifier INPUT.
3. Turn amplifier volume to about 10 o'clock - to stop blowing your ears out.
4. Turn volume up on guitar to acceptable level.
5. press foot switch on pedal and adjust pedal controls to suit your type of distortion.
6. Play like Hendrix.
Good Luck
ps Just as an after thought rechargeable 9volt batteries are the way to go. I've been using them for years as I always get caught up in the power cable.
If you're going to add another pedal like a Phaser, Compressor, Flanger or what just use small connect leads between each pedal but always, always put the compressor pedal last in the line.

Sep 12, 2009 | BOSS AUDIO SYSTEMS Boss Ns2 Noise...

1 Answer

The treshold needs to be turned all the way up in order to reduce noise..i thought that i must be set in a 9 o'clock position based on the reveiews in youtube.


Yes. Very much so. The noise reduction should be the very last pedal, of course. Try to even plug your chain in a different outlet than the one your amp (or if recording to a computer, different than the computer outlet). If you have a particularly loud distortion, have it be the last one before the noise reduction pedal.

Jul 09, 2009 | BOSS AUDIO SYSTEMS Boss Ns2 Noise...

2 Answers

Static Noise from guitar amp.


I take it you have made sure that both the cable to the distortion box from the guitar and the cable to the amp are both good. From the description you give, it sounds like there is no signal getting to the pedal. If the cable is good, then the next likely suspect would be the input jack on the fuzz box. Try wiggling it a little with the guitar cable in place to see if it is loose. Some input jacks are unbelievably cheap and flimsy. A crackling sound (static like) is almost always a bad connection. If it was the output jack, I would think that the guitar signal would come through a least a little bit, but you might want to try wiggling that one, too, if the input jack isn't the culprit.

Another possibility to check is the battery, but this doesn't seem as likely. Some effects units devour batteries, especially units that use 9V batteries. I have a multi effect pedal that kills a 9V in about an hour.

Jan 22, 2009 | Epiphone Les Paul Studio Electric Guitar

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