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    Dave88LX's Avatar
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    Are my US Acoustics amps any good?

    I have two amps I bought from Crutchfield in the late 90s. Both US Acoustics, one is a USA 4050, the other a USX 2080. Just curious if they are any decent or not. Going to do a bit of research here myself, but just wanted some input. Thanks.




    USX 2080:




    USA 4050:









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    Re: Are my US Acoustics amps any good?

    No they **** i will take them off you




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    Re: Are my US Acoustics amps any good?

    Hmmm...I see through your sarcasm! LOL




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    Re: Are my US Acoustics amps any good?

    Was someone in a hurry when they uninstalled them? I'm always very leery about purchasing amplifiers that look like they were, umm.... how do I put this lightly.... look like they were removed in a hurry. The next visual cue is when they look like they were removed in a hurry and have a huge scratch... where the serial number used to be.

    Other than that, if they work, rock em! Who cares if anyone thinks if they are good or not as long as they work for YOU.



    I used to swear by old school car audio gear, now I swear at it!

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    Re: Are my US Acoustics amps any good?

    Some people think they're very desireable. I have a 4065 in an old install and it still rocks after 8 years or so. Never tested it for rated, but I have no reason to doubt the specs. Good clean power.



    dave
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    1999 Buick Park Ave Ultra
    Head Unit: JVC KWHDR720
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    Rear Fill: Boston SE953 6X9's

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    Re: Are my US Acoustics amps any good?

    PM with how much you want for the Chrome 4 channel.





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    Re: Are my US Acoustics amps any good?

    PM me how much for either / both, i have a usx600f.. clamped it at almost 1kw at 2 ohm bridged.



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    Re: Are my US Acoustics amps any good?

    Both of those were made by Zed Audio, so yes, very good amps.



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    Re: Are my US Acoustics amps any good?

    how much for the usa 4050 ???




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    Re: Are my US Acoustics amps any good?

    Quote Originally Posted by gunz4me2 View Post
    Was someone in a hurry when they uninstalled them? I'm always very leery about purchasing amplifiers that look like they were, umm.... how do I put this lightly.... look like they were removed in a hurry. The next visual cue is when they look like they were removed in a hurry and have a huge scratch... where the serial number used to be.

    Other than that, if they work, rock em! Who cares if anyone thinks if they are good or not as long as they work for YOU.
    No, those are mine, purchased new from Crutchfield. I understand where you're coming from though!




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    Re: Are my US Acoustics amps any good?

    Quote Originally Posted by mclerico83 View Post
    No they **** i will take them off you
    Quote Originally Posted by denim View Post
    PM with how much you want for the Chrome 4 channel.
    Quote Originally Posted by Dirtrider4eva View Post
    PM me how much for either / both, i have a usx600f.. clamped it at almost 1kw at 2 ohm bridged.
    Quote Originally Posted by mclerico83 View Post
    how much for the usa 4050 ???
    **** guys...I had no idea these were actually decent amps, let alone that there would be interest in them (haha). I didn't plan on selling them, just wanted to find out if they were halfway decent enough to put in my Civic daily driver to sound OK.

    What are they even worth?

    I have an ESX C-Series 12" sub in a sealed box I bought in ~2001. It's rated 450W RMS @ 4Ω, and the USX 2080 bridged is only 280x1 @ 4Ω @ 12.9V. I guess underpowered for this sub, but, plenty enough I guess to fill in the void?

    I also have this crossover, don't know if I will need to use it in the Civic, I doubt it since I will probably have front/rear/sub outputs.
    Last edited by Dave88LX; 10-11-2012 at 04:06 PM.




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    Re: Are my US Acoustics amps any good?

    2080 maybe $90 shipped. Other is 125-150



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    Re: Are my US Acoustics amps any good?

    that soundas a little high to me. he would be sitting on them for a bit. bad season. there is a thread in the amplifier classifieds for the 4050, to give an idea what the standard grey one sells for. +25-maybe40 for real good chrome that doesn't show a mess of scratches with every glint of light. (different story if it's a real rare edition).
    the 2080 means 2x80, and i would put the max rms at 160x1@4ohms. well built amps, though, and yes, "zed audio"



    *IF I have forgotten to exchange feedback, please let me know*
    i buy broken amps....
    No, i will not "gift" paypal. please do not even make it awkward by asking. if the fees are an issue, I am usually inclined to add them. unless you have discount elsewhere, shipping is through usps flat rate, through usps parcel post, or through the roof..... i am in alaska. thanks
    -Heath H-

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    Re: Are my US Acoustics amps any good?

    I brought a US acoustic 2080 back in 2002, this amp has proven to be very reliable, and tough. First I used it in bridge (280 Watt RMS) mode to drive two 10" Rockford Fosgate Punch 8ohm subs wire in parallel to create a 4 ohm load. Now Im using it to drive one 12" kenwood also in bridge mode 4ohms (280 watts RMS). Make sure you use 8 gauge power wire for the POS and NEG. I have now own this amp for 11 years and I believe it was manufactured in 1999 or 2000, never had any problems just good, clean, and reliable power. The best ways to tell the quality of amp is using these specs, S/N signal to noise should be above 90db the 2080 is 101db, Damping Factor should be above 90 the 2080 is 95 the best amps will usually be from 150 to 200, Total harmonic distortion should be lower than 0.1% the 2080 is 0.01%. The best feature about the 2080 and amps made during this time period is that they were design to produce there continues RMS at 12.9 Volts were as most alternators will produce voltages from 14 to 14.5 volts. This means the power rating of the 2080 is actually underrated, this amp is actually producing closer to 320watts (4ohm) bridged and 100 watts(4ohm) per channel in 2 channel mode at 14.4volts (when the car's engine is running)




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