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NPD - JHS Little Black Amp Box

Discussion in 'The Effect effect' started by Braumeisterblake, Dec 3, 2017.

  1. Braumeisterblake

    Braumeisterblake Strat-Talker

    Age:
    46
    448
    Feb 17, 2017
    Wheaton, Il
    5892429F-63ED-4D65-B607-589D7B3EE7BF.jpeg Anyone using the JHS Little Black Amp box? It works as directed. It’s plugged into my HRD. I’m running my volume on 4 from practice the other day. Normally, I’d be under 2 - The HRD usually has two settings, Loud AF or off. I am getting great tone at a good level, very adjustable. Con so far is a really loud hum. You don’t hear it playing, but in between songs, it’s a bit obnoxious. I’m gonna have to think about this.
     
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  2. Raiders757

    Raiders757 Senior Stratmaster

    Age:
    48
    Sep 2, 2016
    Virginia
    HNPD!!! What does this thing do?
     

  3. Ebidis

    Ebidis Providing the world with flat bends since 1985 Strat-Talk Supporter

    Age:
    52
    Nov 14, 2013
    Alabama
    It's a volume control that plugs into the effects loop to tame a LAF amp. It pretty much does the same thing as the volume knob that is built into the amp.
     
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  4. Raiders757

    Raiders757 Senior Stratmaster

    Age:
    48
    Sep 2, 2016
    Virginia
    ...so it's basically like using a volume pedal in the loop. Nifty.
     

  5. LongLiveRock54

    LongLiveRock54 Senior Stratmaster

    Jan 21, 2010
    Heart of Dixie
    That's the same issue I have with my Classic 30 in my small practice room.

    Is it possible you have a defective unit that causes it to hum? Maybe you should email the manufacturer about that.
     
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  6. TangerineDog

    TangerineDog Senior Stratmaster

    Sep 5, 2015
    The EU
    How does that work?
    Does it lead some of the signal to ground?
     

  7. Raiders757

    Raiders757 Senior Stratmaster

    Age:
    48
    Sep 2, 2016
    Virginia
    I imagine it works like a volume pedal, but with a knob instead of a rocker for your foot. If you have a volume pedal you can run it through your effects loop, crank your amp to get the tubes cooking (if you have them), and use the volume pedal to bring the amp down to a decent room level for practice.
     
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  8. Braumeisterblake

    Braumeisterblake Strat-Talker

    Age:
    46
    448
    Feb 17, 2017
    Wheaton, Il
    Correct. You can run the preamp hot and still have volume control. A volume pedal could go in. The effect loop and do the same thing. If it’s in your pedal chain, then it’s decreasing the signal before it even goes to the preamp. That’s different and the same as just not having anything in that chain turned up.
     
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  9. Braumeisterblake

    Braumeisterblake Strat-Talker

    Age:
    46
    448
    Feb 17, 2017
    Wheaton, Il
    Update. I bought a cheap power conditioner and have chased most of the noise away. The little box is pretty cool. Very gritty distortion pedals, the real sweet tone is just DynaComp+TubeScreamer clean. I get a clean but creamy tone running the useless channel volume on 4 and the black box tweaked to tolerable. It might be worth a try for someone else too.
     

  10. Raiders757

    Raiders757 Senior Stratmaster

    Age:
    48
    Sep 2, 2016
    Virginia
    Got mine in the mail this past Saturday and I am sad to say that it doesn't work properly for me. I can turn it down all the way, crank the amp up and you can still hear the amp loud and clear. Turn the knob up on the JHS and boom the amp gets even louder. Not sure if it's a lemon or if it's my amp. Pretty bummed though, as I was looking forward to this. My old volume pedal crapped out on me, so this was a somewhat cheap solution to getting the results I got with that.

    Wish I had discovered this before I shelled out $45 for the JHS. Ol' Carl here is selling what amounts to the same thing for $17.50. Think I might get one for the heck of it and see if I get the same results.

    http://www.carlscustomguitars.com/The-Original-Volume-Box-Guitar-Amp-Attenuator-Volume-Box.htm
     

  11. CigBurn

    CigBurn Most Honored Senior Member Strat-Talk Supporter

    Age:
    61
    Jun 22, 2014
    Same Shed Different Day
    Built mine from parts I had laying around.. I find it very useful for taming an HRD


    0a.jpg
     
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  12. Raiders757

    Raiders757 Senior Stratmaster

    Age:
    48
    Sep 2, 2016
    Virginia
    Thinking I should have done that myself. Looking under the hood, and it's a super easy build.
     

  13. Believer7713

    Believer7713 Senior Stratmaster Silver Member

    Age:
    44
    Dec 27, 2016
    US
    What value pot did you use? I'd like to make one myself.
     

  14. CigBurn

    CigBurn Most Honored Senior Member Strat-Talk Supporter

    Age:
    61
    Jun 22, 2014
    Same Shed Different Day
    100K audio taper.

     
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  15. Mr. Lumbergh

    Mr. Lumbergh needs you to go ahead and come in on Sunday, too. Strat-Talk Supporter

    Jan 10, 2014
    Initech, Inc.
    Yup. Not even $10 in parts and less than a half hour of work, and mine went together.
    Funny thing is, the HRD is still damn loud....
     
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  16. Raiders757

    Raiders757 Senior Stratmaster

    Age:
    48
    Sep 2, 2016
    Virginia
    Seems the amp I intended to use this with (Marshall Haze 40) has a parallel effects loop. These sort of volume control pedals unfortunately don't work with parallel effects loops. What a bummer.
     

  17. CigBurn

    CigBurn Most Honored Senior Member Strat-Talk Supporter

    Age:
    61
    Jun 22, 2014
    Same Shed Different Day
    Mine allows me to run the clean channel volume at 8-9 while keeping the room volume below conversation level and sounding significantly better to my ear anyway than without it. No hum or hissing either which honestly I don't think should be there given how simple a circuit it is.

    Recorded this a while ago when someone else asked about these things, if this helps. The described settings above were used.

     
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  18. Believer7713

    Believer7713 Senior Stratmaster Silver Member

    Age:
    44
    Dec 27, 2016
    US
    I think my DSL401 is the same with the effects loop. I tried to put my volume pedal through it and got no effect at all. Then tried my wah out of curiosity and barely got anything. I remember now why I didn't use the effects loop before.
     
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  19. Raiders757

    Raiders757 Senior Stratmaster

    Age:
    48
    Sep 2, 2016
    Virginia
    Yep, a parallel effects loop tends to add some of the dry signal defeating the entire reason for using it.
     

  20. Believer7713

    Believer7713 Senior Stratmaster Silver Member

    Age:
    44
    Dec 27, 2016
    US
    I wonder if I could put it between the output and the speaker. Or would that end up changing the impedance and harming the amp?
    I'm asking seriously here.
     
    Last edited: Jan 2, 2018