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View Full Version : Us amps usa-50hc (2)



#1Tunna
01-24-2013, 04:40 PM
Item(s) for Sale:
US AMPS USA-50HC


Item(s) Description/Condition:
At least 8/10
In really good condition for its age, only real con is some light overspray, easily removable. Came like that from the original owner. Will come in original boxes from factory. Only have 1 manual so first come first serve or its obviously yours if you buy both:)
http://i1002.photobucket.com/albums/af144/chasekaneakua/AMP2.jpg



Price:
$140 shipped per
$260 shipped for both
Prices are firm. Will accept trades for a nice 6.5" component set.




Shipping and Miscellaneous Item Information:
Included



Item Pictures:
(List pictures in this section, 1st picture should be your username/date if you have less than 10 positive feedbacks with the i-Trader system or less than 10 references that you have sold to in the past. (These must be listed in your signature, or a link provided to a feedback thread listing these references)).

http://i1002.photobucket.com/albums/af144/chasekaneakua/IMG_2636_zpsc0fd0470.jpg
http://i1002.photobucket.com/albums/af144/chasekaneakua/IMG_2642_zps212d0255.jpg
http://i1002.photobucket.com/albums/af144/chasekaneakua/IMG_2640_zps5a39f46c.jpg
http://i1002.photobucket.com/albums/af144/chasekaneakua/IMG_2639_zps43d5deda.jpg
http://i1002.photobucket.com/albums/af144/chasekaneakua/IMG_2638_zps7dc054f7.jpg

The_Grimy_One
01-24-2013, 06:09 PM
Too clean! What kind of real world numbers come out of these?

Jes 42
01-24-2013, 06:18 PM
Specs:
US Amps USA-50HC
2 x 25W @ 4 Ohms
2 x 33W @ 3 Ohms
2 x 50W @ 2 Ohms
2 x 100W @ 1 Ohm
2 x 185W @ Ohm
1 x 100W @ 4 Ohms bridged
1 x 132W @ 3 Ohms bridged
1 x 200W @ 2 Ohms bridged
1 x 375W @ 1 Ohm bridged
Fuse: 75A
GLWS!! Clean amp

firey_kimchi
01-25-2013, 12:52 AM
I collect US Amps. The manual you have is from the early 90's. The amps, judging from the boards, are the 1999 version. The board should be the same as the USA-150/150X. The rail voltage on the USA-50HC is +/-15V @ 35A. The "white pages" for that amp say it's 100W/CH @ 4 ohms and the overage factor is 15:1. It has (12) 125W 3MHz bipolar transistors. Doing the math in the US Amps brochures 15V x 1ohm = 15A...15V x 15A = 225W/CH. Bridged is 30V x 1 ohm = 30A...30V x 30A = 900W. Someone correct me if my math or way of thinking is off. US Amps are way underrated. GLWS!

#1Tunna
01-25-2013, 06:44 AM
Thanks guys, they've been good to me. Glad to have owned these amps but they have to go, got a AQ120.4 to go active, couldn't resist with the Black Friday deal they had going on.

ThatChevyGuy
01-26-2013, 01:47 AM
ive heard aound 800 at 1 ohm bridged from a dealer

#1Tunna
01-28-2013, 07:41 PM
Hmm, maybe ill just keep them and run 1 per coil on my 12. Haha, nah. Gotta get these sold guys, been out of a job for over a month and having a hard time paying bills. Bump it up!

#1Tunna
01-30-2013, 03:29 PM
Ttt

USAMPFREAK
01-30-2013, 03:56 PM
PM the price for BOTH shipped to 73106

#1Tunna
02-01-2013, 05:39 PM
Sent 2 pms your way

#1Tunna
02-17-2013, 04:52 PM
Bumpit

#1Tunna
02-18-2013, 02:00 PM
Us amp goodness

#1Tunna
02-20-2013, 08:15 PM
Moving back to hawaii in less than 2 weeks. $240 shipped for both. If you want these get them now, shipping from hawaii is double.

#1Tunna
02-24-2013, 05:32 PM
Need these sold by March 5th!

#1Tunna
02-26-2013, 02:59 AM
Us aaaaamps

#1Tunna
03-02-2013, 04:10 AM
Weekend bump. Get these before the 6th!

akheathen
03-03-2013, 01:47 PM
Specs:
US Amps USA-50HC
2 x 25W @ 4 Ohms
2 x 33W @ 3 Ohms
2 x 50W @ 2 Ohms
2 x 100W @ 1 Ohm
2 x 185W @ Ohm
1 x 100W @ 4 Ohms bridged
1 x 132W @ 3 Ohms bridged
1 x 200W @ 2 Ohms bridged
1 x 375W @ 1 Ohm bridged
Fuse: 75A
GLWS!! Clean ampthese are the official low voltage ratings, and yes, underrated......


ive heard aound 800 at 1 ohm bridged from a dealer
........but not that much. should expect possibly 600rms @ 70a+ draw. it will sound real clean, though.

I collect US Amps. The manual you have is from the early 90's. The amps, judging from the boards, are the 1999 version. The board should be the same as the USA-150/150X. The rail voltage on the USA-50HC is +/-15V @ 35A. The "white pages" for that amp say it's 100W/CH @ 4 ohms and the overage factor is 15:1. It has (12) 125W 3MHz bipolar transistors. Doing the math in the US Amps brochures 15V x 1ohm = 15A...15V x 15A = 225W/CH. Bridged is 30V x 1 ohm = 30A...30V x 30A = 900W. Someone correct me if my math or way of thinking is off. US Amps are way underrated. GLWS!
not quite..... certainly not the same board, or even close to the 150/150x (675-725 rms range iirc, as i clamped) and it will sag at low ohm loads, and you can't really count anything over 10%thd as power. some power input mods and that 16v power buck unit they used to sell could possibly get the 800 mentioned

Moving back to hawaii in less than 2 weeks. $240 shipped for both. If you want these get them now, shipping from hawaii is double.
usps flat rate

oh, and you got a full-size pic of your avatar?

#1Tunna
03-05-2013, 02:15 PM
Thanks for clearing things up man, always good to know the real specs.

As for USPS flat rate, I'm pretty sure they can fit in a single medium flat rate each wrapped in bubble rap but that's about as good as packaging is gonna get in that flat rate which honestly doesn't sound awesome to me. But if it works it works I guess.

oldschool69
03-27-2013, 10:01 PM
hey you still have these amps? thanks joe

oldschool69
03-27-2013, 10:42 PM
Hi you still have them? thanks joe