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BOSS AC-3 "Hiss", Mod or Other Workaround?

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  • BOSS AC-3 "Hiss", Mod or Other Workaround?

    Anyone know of any mod's to remove/reduce the hiss produced when turning the "top" knob on this pedal up to 1 o'clock or above?

    Or, anyone figured out any workarounds for this problem, like using an additional pedal, like an EQ, before or after the AC-3?

    Thanks!
    ---------------------------------

    Good Trades with:
    munizfire

  • #2
    you could attempt dropping monte an email..
    http://www.monteallums.com/

    he might be able to send you in the right direction or maybe even tell you exactly what the issue might be..

    nice guy.
    2x4 Telecaster build - | - killer HC search

    Comment


    • #3
      I'm very interested as well. The hiss makes it unuseable for me. And EQ pedal might work. The best solution I've found is running it through something with cabinet modeling... it seems to cut just enough of those highs, while still retaining the "acoustic" sizzle. I've run it through my Sansamp Liverpool (set to clean), and it cuts out the hiss, and thickens it up a bit; it sounds pretty decent. I've also tried it through the Sansamp Acoustic DI, which has some kind of tube pre modeling that kind of does the same thing.

      But, I think I am just too much of an acoustic purist, if I want an acoustic sound, I just bring my acoustic guitar instead. But, the AC-3 can get some 3-dimensional clean sounds, which can be cool, as long as you get rid of the hiss.

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      • #4
        you could attempt dropping monte an email..
        http://www.monteallums.com/

        he might be able to send you in the right direction or maybe even tell you exactly what the issue might be..

        nice guy.


        Thanks - emailed him.

        I'll post back here if he or any others I found say they've got a mod that's possible.
        ---------------------------------

        Good Trades with:
        munizfire

        Comment


        • #5
          Thanks - emailed him.

          I'll post back here if he or any others I found say they've got a mod that's possible.


          Both Monte and Analog Man say that no mod is currently available, although they may or may not research and create one for it in the future.
          ---------------------------------

          Good Trades with:
          munizfire

          Comment


          • #6
            This should help with that hiss...
            Originally Posted by primeholy


            Nothing can get between kirk and his wah.

            Comment


            • #7
              in the boss gt-fx, the AC is placed behind the EQ, but off course you can try out different places.
              https://www.discovideo.be/diensten/d...dj-trouwfeest/
              https://www.jetrouw.be/trouwfeest-dj/
              https://www.discovideo.be

              Comment


              • #8
                I used to have an AC-3 and had the same problem. What worked for me was to run the AC-3 into my Bad Monkey (Humphrey Audio mod) and the hiss was reduced almost to nothing. This did not seem to work for any other OD pedal that I ran it into. As long as I kept the BM on a clean setting the AC-3 sounded nice. I still have the BM but no AC-3. I have been thinking about picking up one.

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                • #9
                  I had all the versions of the AC pedals.. was never pleased with them and sold all of them. Tonally not very good and ridiculously noisy for something thats basically used for a clean/acoustic sound. I had such hopes each time that they'd get it right, but there's still issues there.
                  Originally Posted by primeholy


                  Nothing can get between kirk and his wah.

                  Comment


                  • #10
                    I had the several versions of the AC pedals.. was never pleased with them and sold all of them. Tonally not very good and ridiculously noisy for something thats basically used for a clean/acoustic sound. I had such hopes each time that they'd get it right, but there's still issues there.
                    Originally Posted by primeholy


                    Nothing can get between kirk and his wah.

                    Comment


                    • #11

                      I know that this is an old post but I have some input that could help.  I put the AC-3 at the front of the chain (Guitar, Wah, AC-3, Compression.. Noise...) and that fixed the hiss issue for me.  To be clear, I get the hiss with the compression in front of the AC-3 whether compression is on or not.

                      One weirdness - I am not using Boss wall warts and when I switched power supplies between the CS-3 and AC-3, the AC-3s light would not go off.  No change on the CS-3.  I rotated the power supplies so that the AC-3 had the same supply as before and all seems normal. 
                      Tomorrow I will be getting an NS-2 with the power daisy chain.  I will run the compressor and the AC-3 from that power and see if anything changes. 
                      I hope that this helps someone. 

                      Comment


                      • #12
                        Folks,

                        I had the same issue with Boss AC-3 and here is the ultimate solution:

                        Connect your pedal line out to a DI with an amp sim; could be H&K Red Box 5, Joyo JDI-01, Behringer Ultra G, Palmer Junction, Radial JDX Direct-Drive etc...

                        My personal choice is Palmer Junction DI with 'Bright' setting. Use an XLR cable from the 'Balanced Out' to PA or sound card.

                        If you want to have total control over the acoustic simulated tone on stage, use an EQ right before the AC-3. If you have a plug-in running on your computer, keep in mind; you might want to set the 'Reverb' on AC-3 to zero and use that effect after the EQ plug-in.

                        Hope this helps, cheers.

                        Comment


                        • DeepEnd
                          DeepEnd commented
                          Editing a comment
                          Good to know but bear in mind this thread is essentially from 2009 with one post from 2013. We all welcome new blood and good advice but this is a bit late.

                      • #13
                        Yes, old thread. I would advise using a gate to kill the signal when you're not playing. you set the sensitivity of a gate so it clamps the signal down to nothing when you stop playing and when you pick the string, the gate releases and lest the sound through. This way when you play, you get the full tone of the pedal. The hiss noise floor is low in comparison to actual notes being played and the hiss is squelched when you stop playing.

                        Any kind of EQ is likely going to mask the tone if the hiss is within the range of the notes. The Acoustic simulators boost presence to make a guitar to sound like a bright acoustic. This boosts noise in that range just like an EQ would. Using an acoustic pedal to boost frequencies then using an EQ to cut those same frequencies is counter productive.

                        Boss makes an NS-1 & 2 which will take care of this issue. A Rocktron Hush and even Beheringer clone of the boss works to take care of the noise.

                        My solution however is to either install a Piezo bridge which allows you to get acoustic tones or just plug an acoustic in when you need it. A pedals can only fake the frequency response. Its still going to sound more like an electric then an acoustic.

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