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Thread: Tweeter volume control pot

  1. #1
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    Tweeter volume control pot

    Hello, ive seen a few posts dealing with volume and pots here but im not sure if they are suitable for my situation. I only have a 4 chanel amp and decided besides my 4 speakers i want some tweeters. I have to split the tweeters off of the front channels and feed it into a crossover and then into the tweeters up front. But the tweeters are too loud for my liking and I would like to lower the volume without losing any sound quality if possible... maybe thats impossible? The pot or whatever i need to lower the volume can go anywhere, even right beside the tweeter for all i care, i just need some (hopefully inexpensive, simple) way to adjust the volume of the tweeters. Would something simple like a pot work well? or does anyone have any suggestions as to what i need to buy.
    The tweeters run on 70w and peak at 250w and the frequency response is 2k-50k if that helps at all.

  2. #2
    MySQL Error soundman98's Avatar
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    it would be easier to use a second, cheap amp to power the tweeters-- L-pads/pots that can take 250 watts will cost almost just as much.

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    Resistor?

    Thanks for the advice! If its that expensive for those pots would using a plain resistor to knock the volume down a bit work? Or would those degrade the sound quality too?

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    Ok I did find some information on using resistors. With my 4 ohm speakers if i want to reduce the volume by about 12db I have to use a 3ohm resistor. But all the resistors i see available online are 1/4watt 1/2 watt 1 watt ect. I cant find any information on how the resistors wattage applies to what i am needing. My speakers are rated 70 watts but peak at 250 watts. Will any wattage resistor do for reducing the volume or is higher wattage more ideal?

  5. #5
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    Yes the higher the wattage capability the better, but you will need extremely high wattage capable resistors depending on your amp's output because the wattage ratings of the resistors is the amount of power that can be dissipated through the resistor before it burns out.
    Check out this site http://www.allelectronics.com/make-a...sistors/1.html. I ran into it a while ago, but never got a chance to use it personally. Most notably check out the 1 Ohm resistor can handle up to 25 watts and the 2 Ohm resistor can handle up to 10 watts.
    You mentioned the power handling capabilities of the tweeters, but you forgot to mention your actual power output of your amp and the actual impedance of the tweeter, so I couldn't recommend if it would be safe to go with one 1 ohm resistor and one 2 ohm resistor in series, or just go with three x 1 ohm in series for optimum safety of the circuit. Although those resistors are pretty cheap on that site, so buying three of the 1 ohm resistors couldn't be all that bad.

    *I just saw on radioshack they have a 1 Ohm resistor in the 10 watt variety, its the same price as the other one, (I don't know about shipping) But I would personally go with the 25 watt version I mentioned above unless I calculated it to be safe to go with the lower wattage option.
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  6. #6
    Constant Bitrate thewizard's Avatar
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    You mentioned that you are already using crossovers on the tweeters. That is pretty much what a resister is going to do as well, except that it is also going to alter the cutoff frequencies and function of your existing crossovers. I would not recommend doing this as there is a good chance that it will end up sounding like dog poo, not to mention that it will also change the final load that amplifier see's on each channel.
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  7. #7
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    i would buy speakers that have good tweets to begin with. with audio, you cant really just keep adding more crap to get better sound. you need good stock to start with.

  8. #8
    Constant Bitrate thewizard's Avatar
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    Quote Originally Posted by trader007 View Post
    i would buy speakers that have good tweets to begin with. with audio, you cant really just keep adding more crap to get better sound. you need good stock to start with.
    Well I was trying to be nice, but this is true.
    Data911 M5 system
    RR and iGo8PC
    Pioneer head unit
    Pioneer DEQ-9200 digital processor
    Phoenix gold line drivers
    Ultimate and Visonik amplifiers
    SMT 3 way active front stage
    Digital Design sub woofers
    3 runs of 0 gauge wire

  9. #9
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    Quote Originally Posted by trader007 View Post
    i would buy speakers that have good tweets to begin with. with audio, you cant really just keep adding more crap to get better sound. you need good stock to start with.
    This is true, if you went with a decent set of component speakers they may have jumper settings within the crossovers that will allow you to lower the output of the tweeter itself if it happens to be to bright or loud in comparison. I would go that route.
    "In the beginners mind there are many possibilities, but in the experts mind there are few."- Shunryu Suzuki
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  10. #10
    FLAC
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    well my setup is a perfect example. i have two 5x7 coaxials, thats it. but they arent like most coaxials, theyre polk momo's, ran off 300w rms kenwood amp. i dont even have dynamat or anything installed- i dont really need it because my volume can go from beautiful to ear bleed. i have done the EQ/little tweets/bass blocker and other gimmicky stuff before... you can spend $50 on speakers and $60 on accessories or you can just buy a pair of real speakers for $150 and have something that actually sounds accurate and loud.

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