Home › Forums › Help/Technical Questions › can LPB-1 cut (attenuate) as well as boost?

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  • February 2, 2010 at 1:13 am #79801
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    Participant

    just as the subject line reads:
    can LPB-1 cut (attenuate) as well as boost?

    if so, what knob position (approximately) is unity gain/volume?

    thanx!

    _j

    February 2, 2010 at 2:18 am #107048
    ranjam
    Member

    No. This isn’t an EQ of any sort. It is a basic BJT amplifier, with carefully chosen capacitor values so only the treble frequencies are amplified. The one potentiometer is a standard volume control to adjust the overall level.

    March 25, 2010 at 9:24 pm #108804
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    Participant

    still wondering about this since i’ve heard conflicting answers.

    can the LPB-1 cut the incoming signal (to silence) as well as boost it?

    March 25, 2010 at 10:10 pm #108805
    electro-melx
    Moderator
    Quote:
    No. This isn’t an EQ of any sort. It is a basic BJT amplifier, with carefully chosen capacitor values so only the treble frequencies are amplified. The one potentiometer is a standard volume control to adjust the overall level.

    are you thinking of something else? The LPB will boost across all frequencies it’s not a treble booster in anyway, although it does add a little presence as well as a slight boost in the lower frequencies.

    It’s been a while since I used one but i’m pretty certain when you turn the knob to zero you get no sound at all, so the answer to the OP would be yes. (but i’m not 100% on that)

    March 25, 2010 at 10:48 pm #108806
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    Participant
    Quote:
    It’s been a while since I used one but i’m pretty certain when you turn the knob to zero you get no sound at all, so the answer to the OP would be yes. (but i’m not 100% on that)

    approximately where on the dial would be unity gain/volume?

    March 25, 2010 at 11:17 pm #108807
    SanquiFlerb
    Member

    if you need that, use the signal pad. it’s a volume attenuator

    March 25, 2010 at 11:35 pm #108808
    Ned Flanders
    Moderator

    The LPB has one knob. Its a volume knob. Turn it to zero and you will have no sound.
    Its not an attenuator but you can turn it to zero yes.

    March 26, 2010 at 1:02 am #108809
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    Participant
    Quote:
    The LPB has one knob. Its a volume knob. Turn it to zero and you will have no sound.
    Its not an attenuator but you can turn it to zero yes.

    ok, sounds like that will work for me, just wondering which position of the knob = no cut and no boost (ie. unity gain). anyone know?

    March 26, 2010 at 1:52 am #108810
    ranjam
    Member

    Yes, I mixed my meds right before I said only the treble frequencies were boosted. That’s the Screaming Tree. The LPB-1 is a full-frequency booster. Where is unity gain? To me that’s almost like asking ‘Is this the 3rd street on the left?‘ You won’t know unity gain unless you compare the bypass signal and the pedal volume. If you have hot humbuckers, unity gain might be lower on the dial. It will depend on the incoming signal. If my faulty memory is correct, the gain is something like ’20’ or ’25’. Depending on the taper of the volume control, and that can have a wide tolerance, it may be somewhere around 9 o’clock or 10 o’clock. Start there, and compare.

    March 26, 2010 at 10:37 am #108813
    electro-melx
    Moderator

    yup, I agree……… from what I can remember unity was about 10 o’clock for me.

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