Are my US Acoustics amps any good?

[Dave88LX 10+ year member]

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:

Click to read more...

 

[mclerico83 5,000+ posts]

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

 

[Dave88LX 10+ year member]

Hmmm...I see through your sarcasm! LOL

 

[gunz4me2 10+ year member]

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. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif 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. //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

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.

 

[maylar 10+ year member]

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.

 

[denim 5,000+ posts]

PM with how much you want for the Chrome 4 channel. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[Dirtrider4eva 10+ year member]

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

 

[Rich B 5,000+ posts]

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

 

[mclerico83 5,000+ posts]

how much for the usa 4050 ???

 

[Dave88LX 10+ year member]

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. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif 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. //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif
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.

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif No, those are mine, purchased new from Crutchfield. I understand where you're coming from though!

 

[Dave88LX 10+ year member]

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

PM with how much you want for the Chrome 4 channel. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

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

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.

 

[Dirtrider4eva 10+ year member]

2080 maybe $90 shipped. Other is 125-150

 

[akheathen Premium Member]

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"

 

[latwoods]

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)