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    Boston Acoustics GT-2125 "Controls" ???

    I was reading the manual for my Boston Acoustics GT-2125 amplifier didn't quite understand the controls that I could adjust. They were:

    Stereo/Mono Switch
    Remote Gain OFF/ON Switch (ON when using GT-RSL)
    Lowpass Slope Switch (12dB Stereo, 12dB Mono, or 24dB Mono)
    Lowpass Crossover OFF/ON Switch (OFF/12dB/24dB on GT-275)
    Lowpass Frequency Adjustment (50Hz to 350Hz - continuously variable)
    Input Sensitivity (250mv to 8.0v - continuously variable)
    Highpass Crossover OFF/ON Switch
    Highpass Crossover Q-Tune™ Adjustment (0.707 to 1.6 - continuously variable)
    Highpass Frequency Adjustment (20Hz to 350Hz - continuously variable)
    Fuse (replace with same value mini ANL only, refer to specifications on page 3)

    Can you explain what each control is and where I should have it adjusted to make a bridged 400w @ 4 ohms subwoofer sound the best?

    Thanks!







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    Re: Boston Acoustics GT-2125 "Controls" ???

    Search around. You'll find a lot on how to set amplifier controls.




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    Re: Boston Acoustics GT-2125 "Controls" ???

    [

    Stereo/Mono Switch mono
    Remote Gain Turn on if your using a remote
    Lowpass Slope Switch probably 12db mono
    Lowpass Crossover On, no boost
    Lowpass Frequency Adjustment (around 80hz
    Input Sensitivity set to match head unit rca output voltage
    Highpass Crossover OFF



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    Re: Boston Acoustics GT-2125 "Controls" ???

    Awesome dude! Thank you guys so much!




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    Re: Boston Acoustics GT-2125 "Controls" ???

    Quote Originally Posted by iball1804 View Post
    Awesome dude! Thank you guys so much!
    your welcome , i would still do some reading up on the amp setting tutorials like DoesDad suggested.



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    eat my asshole you insignificant bastard child of a retarded dingleberry cunt wrinkle fuck toy
    Quote Originally Posted by subzero View Post
    her pussy better be that nicest pussy you ever ever ever had. she better suck, swallow, jack off, eat ass and snatch, make sammiwich, do yard work and fix the vehicals while nude. Because a bitch like that is definately gonna cause alot of stress in your life, even thou she keeps your wallet and your balls drained.
    Quote Originally Posted by 05fronty View Post
    bitch you better swallow and not make a mess

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    Re: Boston Acoustics GT-2125 "Controls" ???

    its kinda pointless setting something when you dont know the effect ya know what i mean?



    REFS:
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    Quote Originally Posted by Spider Monkey View Post
    eat my asshole you insignificant bastard child of a retarded dingleberry cunt wrinkle fuck toy
    Quote Originally Posted by subzero View Post
    her pussy better be that nicest pussy you ever ever ever had. she better suck, swallow, jack off, eat ass and snatch, make sammiwich, do yard work and fix the vehicals while nude. Because a bitch like that is definately gonna cause alot of stress in your life, even thou she keeps your wallet and your balls drained.
    Quote Originally Posted by 05fronty View Post
    bitch you better swallow and not make a mess

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    Re: Boston Acoustics GT-2125 "Controls" ???

    A little bit. But I'll try adjust the controls to what you originally said




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    Re: Boston Acoustics GT-2125 "Controls" ???

    Quote Originally Posted by iball1804 View Post
    Highpass Crossover Q-Tune™ Adjustment (0.707 to 1.6 - continuously variable)
    The Q-Tune is no doubt the oddest of all. It's specific to Boston Acoustic amps. Basically, when you have a high pass filter enabled, the Q-Tune setting of 0.707 makes the high pass filter behave like that on any other amp. This is a good starting point. The settings above 0.707 give a slight boost at around the high pass crossover frequency. The idea is to boost low frequencies if your system is lacking. Think of basically bringing a sealed box subwoofer low end extension closer to that of a ported box. I wouldn't use this with a ported box subwoofer. I also wouldn't use this with a sealed box subwoofer if it has relatively little excursion potential. I normally prefer to turn off the high pass (subwoofer) filter completely with a sealed box and then adjust EQ on the head unit if necessary.

    Take a look at this picture:

    http://pasmag.com/images/stories/12_...-tune_opt.jpeg




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    Re: Boston Acoustics GT-2125 "Controls" ???

    Yeah that makes sense. Awesome, thanks!




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    Re: Boston Acoustics GT-2125 "Controls" ???

    I've got another question for you guys. I'm assuming that when it's in Stereo mode, it's giving a signal to both positives and negatives in both channels -- and when it's in Mono mode it's only giving the positive in channel 1 and the negative in channel 2 power (so I can bridge from there in Mono mode)?

    I also want to be clarified on how the amp knows whether there's an impedance of 4 ohms or 2 ohms. Because depending on the impedance, the amp gives out a different wattage rating (400w @ 4 ohms and 600w @ 2 ohms). I want the 4 ohm impedance because that's what my single subwoofer calls for. Does the amp automatically know to put out 400w @ 4 ohms when bridged in Mono mode?

    Thank you all so much for the help!




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    Re: Boston Acoustics GT-2125 "Controls" ???

    Anyone? ^^^




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    Re: Boston Acoustics GT-2125 "Controls" ???

    The way the amp "knows" what resistance to run at depend on what kind of voice coil your sub has and how you wire it. Svc 4 ohm it's almost impossible to screw up. Just check and see if you have svc 2ohm/4ohm vs dvc 1ohm/2ohm/4ohm and wire it to a 4 ohm load.




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    Re: Boston Acoustics GT-2125 "Controls" ???

    The impedance that the amplifier will see depends on how you wire the subwoofer. Indeed, how have you wired your subwoofer, may I ask?




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