Amp For TWO 12" MM124

Systems

I just purchased 2 12" Polk/Momo MM124's i was lookin on here an i saw that a good amp for them would be the USAmps 1000x that pushed around 1400watts. But then i was lookin and saw the 2000x amp from USAmps. was wonderin what would be the better amp like cost wise an what would be more efficent in my situation. the subs are in a Q-Logic TYPE 1 DOUBLE 12" (QLH-.8512DE).. am i going in the right direction here?? btw i gotta 2000 grandprix so gimme some input guys.. thnx.

sntnsupermen131

i would not go anymore than than 700watts on those subs...thats probably their physical limits right there
far as amps go, USAmps is a pretty good brand, but dont get q-logic boxes...theyre crap
you want a box made out of 3/4" MDF or better
-Cody

Systems

also i have 2 6"x9"s (110 RMS each / 330watt peak each INFINITY KAPPA 693.5i 6"x9"3-way) not sure on the ohms

and plan on gettin (Infinity Kappa Perfect 5.1 5-1/4" Component system) which is 4ohms 100 RMS each / 200watt peak each.

an was wonderin what would be a good amp for those also yea i plan on havin 2 amps. lookin forward to seein your guys input.. thnx

Systems

so the usamps 1000x?? an u know anyone that makes them good box's? ideal for the momo's

sntnsupermen131

go with the usa-1000, not the 1000x, my mistake
the 1000 does 1000wx1@2 ohms
the 1000xdoes 1000wx1@4 ohms
as far as boxes go...go to your local car audio shops..they have the best boxes
-Cody

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if you dont find anything good locally -- go to www.sounddomain.com/shop

click on subwoofers
click on enclosures

click on "R/T" brand

scroll down to the 3/4" mdf dual 12" small box -- its prolly like 80 bucks or 90 bucks.

decent box.

Systems

k that box looks pretty good but about the amp situation i wanted 1 amp fer the momos then another amp for the 6x9's an 5 1/4's so the 1000x or 1000 for momo's ?? little confused here :P
thnx for the help tho i apreciate it

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USA-1000 Only
One Ohm Stable
150 Watts x 2 into 4 Ohms
232 Watts x 2 into 3 Ohms
300 Watts x 2 into 2 Ohms
500 Watts x 2 into 1 Ohms
500 Watts Bridged into 4 Ohms
664 Watts Bridged into 3 Ohms
1000 Watts Bridged into 2 Ohms
Available in Black or Chrome


USA-1000X Only
Two Ohm Stable
300 Watts x 2 into 4 Ohms
400 Watts x 2 into 3 Ohms
500 Watts x 2 into 2 Ohms
1000 Watts Bridged into 4 Ohms
Available in Black or Chrome

.... so the USA-1000 NOT the 1000x. got it? same amp, just set up to run at different impedances - one is geared to put out 1k+ at 2 ohms, the other do to the same power at 4 ohms. so go w/ the 1000, parallel the subs (2 ohm load) and then run the amp bridged to the parallelled subs.

as far as yoru other gear...

you can do the US Amps USA-4300X -- that'll do 75 x 4 to your highs...

or go something a little beefier... like do a USA-400X up front (100 x 2 to components) and then a USA-200X in rear (50 x 2 to your 6x9's)... you'll wnat the staggered power... a decent comp set allows you to do proper staging, in which case you want like double or triple the power going to your fronts as you want going to yoru rears (rough figures - play with it once its in the car, but its something to sorta judge by to begin with).

if u're dead on wanting a 4 channel not two 2's, then u can try like a HiFonics Nemesis NX880 - that'll do 100 x 4 into 4.

the best setup however will be a separate amp for front and rear -- in which case i say do not take our sole reccomendations, do your homework, look around - spend 3 nights with no sleep on the internet hunting amps. you will eventually come across one that is like 150 - 200 x 2 and clean for the front and another that's like 50 - 75 x 2 for the rears that you'll be comfortable with -- and prolly at a decent price... remember, there is no sin in bridging a 4 channel to run 150 or 200 x 2 to your fronts if you cant find a 2 channel that'll do that power that's in your price range. it wont sound any different as long as its a good amp.

however if i hadda buy two amps right now - and i was doin yoursetup.. this is what i'd get...

MTX Blue Thunder Pro 150x2 -- about 140 - 160 x 2 at 4 ohms (ignore the listed specifications... its as underrated as doug flutie) http://www.mitekfactoryoutlet.com/products/product.cfm?PN=PRO150X2R --> refurbed from the factory at 150

MTX Blue Thunder Pro 752 - is on the same website for like 100 as well...

Systems

also is a capacitor good for what i got. an am i goin to need gauge or 1/0 gauge wirein or does it matter??

MTXMAN

go to www.speedsound.com for the usamps, they have the US 1000 for 609.95 + shipping. its the best price i've found so far

Systems

**** on ebay its $425.00 + shippin sayin factory sealed new in box good feedback.

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i was gonna say - ya on ebay they're like 4 -- go ebay - -save 200...

far as a cap -- i'd get two.

and a large battery (preferably a single 900 - 1000 CCA under the hood in place of the factory batt - upgrade alt wiring to 0 gauge - run 0 gauge all the way back to the caps -- run 0 or 2 gauge from caps to usa1000 -- run 4 or 8 gauge from caps to other amps.)

Systems

would i really need a whole new battery?? cuz once the cars started it all runs off the alternator anyways dont it? or should i just get one of those red top batterys cause its better for my sounds?

sntnsupermen131

no, your alternator recharges the battery once the car is started and the vehicle takes it power from the battery
red top as in optima?
optima is a very good brand
i need to get one of their yellow tops
has anyone heard anything about the rockford fosgate car batteries?
-Cody

MTXMAN

personally i tend to avoid ebay for any purchase over $200. that and speedsound is even listed with the Better buisness buero (i cannot spell....) they are a ligitimate store (with a real building with real car audio too ;D) not a basement dealer. i put a lot of trust in them. while it may be 200more you know that you're not gonna get screwed... just cause they say on ebay that the manufacturer warranty is valid doesn't mean that it realy is...

Systems

the mtx thunde1501d sounds freaking great on those subs... one of the guys that used to work with me has 2 mm12's with a 1501 in his infinity and i think he actually got sponsored by polk @ nopi 1 year ago....

scotty hall

MTXMAN

the downside is that the 1501D is NOWHERE near as clean as the US 1000

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81000D was bad -- 1501 is an ever livin piece of garbage.

every year mtx's specs go lower and lower and lower... the performance specs other than sheer power are very poor on the 1501D, but its still just like barely on that line of "ok i'd still buy it". if mtx gets any worse, then i can actually say i would not buy it.

i only use the 81000D's by virtue of the fact of 1) i'm poor and cant afford any better... 2) i knew i wouldn't have a problem with them... as such i could buy them off ebay for 300-350 each at the time and not worry abouyt them breaking and needing repair.

given the opportunity, and given a little more money to somehow beef up the charging system, i'd have gone with USamps or Tru Tech, maybe even Cadence.

again though -- money comes into play.

TheAudioSpectru

I've Found that the Alpine mrd-m500 sounds great with those subs...

MTXMAN

the alpine's not a bad amp but it doesn't compare to the USAmps 1000.

compare...
Alpine MRD-M500
Class D Mono
500x1 @2ohms
frequency response 20-200hz (not the greatest low frequency)
signal to noise ratio 90 dBA
1% THD at rated power (DIRTY!!)

USAmps US-1000
Class AB two ch
1000x1 @2ohms
frequency response 5hz-50khz (damn good full range response)
signal to noise ration 105 dBA
<0.006% THD at rated power (you'd have to be deaf to not notice the difference between 1% and .006% THD)

Unfortunately neither listed slew rate or dampening factor but i would stake my left nut on the fact that US has alpine beat on both factors.

all in all the us 1000 would outperform two alpine mrdm500's in every category

sntnsupermen131

every category cept for price:)
-Cody

MTXMAN

I beg to differ cody,while techincally the price of the us is higher it's also a MUCH better value.
the us 1000 can be had new in box with warranty from an authorized online dealer for 610+ shipping, from crutchfield the alpine costs 500, 110 dollars more for double the power, a fraction of the THD, an extra 15hz of low end, a 15dBA boost in signal to noise ratio, and (probably) a much higher dampening factor? i'd say it's definately worth the cost, also keep in mind that you're only getting 250w/sub which i do believe is underpowering them. with a 110 dollar difference i'd say it's definately worth it

Systems

USamps?? Are you for real?? They're a Walmart brand car audio! Cheap way over rated crap. The numbers for their amps are unrealistic for such a low price. As with anything if its to good to believe it probably isn't worth it. This comes from 7 years of experiance working car audio sales and install.

If you want to power 2 MOMO 12s go with a real amp like Polk/MOMO, JL, PhoenixGold, Orion, PPI, Kicker, Eclipse, Nakamichi, or Xtant. If you're short on cash go with MTX or Audiobahn, they're not as clean as the others I listed but ther're still realy nice for the investment. Alpines are really clean but lack in raw power. They are so over rated and over priced you'd be stupid to waste money on them.

And for MTXMAN the 1501d is unbelievable. In my daily driver I have:

2 pairs Infinity KAPPA 63.5I 6-1/2" 3-way multielement
2 pairs Infinity KAPPA PERFECT 6.1 6-1/2" Component System
2 Infinity KAPPA PERFECT 10 VQ

powered by:

Panasonic CQ-DFX983u w/ CR-SRT100 Sirius receiver
MTX Thunder 1004 250wX4 @ 2Ohm (11.7% under rated)
MTX Thinder 1501d 1500wX1 @ 2Ohm (22.4% under rated)
2 2.5 FARAD caps
Moster M series Power, Speaker, and RCA cables

and it hits harder and cleaner than anyone could want in a daily driver. It sets off car alarms in every parking lot I go in and has cracked my rear glass twice!

Specs and Pics of my MOMO SPL/Show car will soon be posted.

Thanks, Polk keep making us a great product!!!
-- Chris "REX" Hoeppner
Circuit City Road Shop 3220

PS The accommodation pricing could be a bit better on the MOMO products.

sntnsupermen131

you say USAmps is bad, but JL is a better alternative...I think you've been working at circuit city too long...:)
ive heard the 1501, its a very dirty amp, my old rockford fosagte bd1000 only put out 1200 watts, but it sounded a lot cleaner than the 1501, and rockford and mtx are in the same league
polk doesnt make an amp that will support 2 mm12s
ive never really heard anything great about eclipse, nakamichi, and kicker amps
in fact, ive heard bad things about kicker amps
and eclipse and nakamichi make some nice head units, but theyre amps arent that great either
-Cody

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USamps is walmart? -- USamps is cheap?

um... retail on the 1000X is about 1,000 bucks.

a dollar a watt is considered "expensive".

you can get phoenix gold for about 80 cents a watt.

i'm not knocking PG...

actually... PG / USamps / Xtant / PPI / Eclipse / MTX / and Nakamichi are all quality products (in their respective 'leagues')

however... Orion is dog **** since DEI bought them... and Kicker hasn't put out a product i'd waste my money on in a long time... old orion HCCA was quality product.. but new orion is no better than MTX (for their 2 channels) and their class D's are pretty ****... and they charge a fortune for them... Kicker's class D's dont put out their rated power... how's that for a let down.


as far as USamps, you must be thinking of USacoustics -- "600 watts for 179 bucks" -- USamps is more like 600 watts for 650 bucks.

MTXMAN

wow, that was the saddest most uninformed post i've ever read, no offense man but you obviously have usamps confused with someone else. as to your other suggestions, Polk MOMO amps i have no personal experience with but with the fact that it's Polk's first venture into amps i'm guessing they're what you would expect from a starter line; decent but not great (i could be wrong though). JL and Orion are both highly overrated and overpriced, i wouldn't ever waste my money on JL but OLD orion i'd consider, their old **** was tight. the fact that you even called an eclipse amp good shows how little you know, i've heard bad reports about them across the board, they make some badass head units and their titanium subs are sweet (if you wanna pay a grand a sub) but their amps suck ****. I know you're big on pushing Audiobahn cause you guys just got them and all but overall i'd say they're worthless and the vast majority of those who participate in these forums would agree. as for the mtx 1501D being better than the usamps 1000... well lets compare shall we?? these specs are from the official sites of the respective manufacturers.

MTX 1501D
Class D mono
1000wrms @2ohm
>2% THD (that's one of the dirtiest amps i've seen)
Signal to noise ration 100dBA
Dampening Factor >100 (pretty damn sloppy if you ask me)
Frequency Response 20-200hz (not the greatest low end...)

USAmps US-1000
Class AB two ch
1000x1 @2ohms
>0.006% THD at rated power (Clean as hell)
signal to noise ration 105 dBA
Dampening Factor >800 (tight as a... well you get the idea)
frequency response 5hz-50khz (damn good full range response)

The US-1000 beats the MTX hands down, You obvously don't listen to techno cause if you did you would have no clarity to your bass when the hits get fast, dampening factor controlls the shifts in power for an amp. 100 is sloppy as hell but 800 would give you such clarity that you wouldn't believe your ears. even better get the 2000 or the 2000x for 2000w at either 2 or 4 ohms with a dampening factor greater than 1000. a word to the wise my CC associate (former roadshop empoyee myself) read the manual before you judge a company.

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just so u know...

slew rate mtx 81000d / 1501D = 20v per microsecond.

slew rate USamps 1000 / 1000X = 150v per microsecond

that's the highest i've ever seen listed for any car audio amplifier, i'm sure someone is higher somewhere, but for reference, zapco is not over 100, tru tech is not over 80, soundstream doesn't even come close...

sntnsupermen131

cadence?
-Cody

MTXMAN

I just think it's funny that he thought the 1501D would outperform the US-1000, i got a good laugh outa that one. i still like MTX for lotsa Midgrade, relatively inexpensive, power though, and i still think that the 9500 subs look pretty nice.

sntnsupermen131

550S
damping factor: >200
slew rate: 30v/ms
frequency response: 20hz-20khz
distortion: <.05
-Cody

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1501D will outpower the USA1000...

you'll get like say 1500 - 1600 watts versus 1150 - 1300...

but by the time the USA1k is at 1300 its still no where near as filthy as the 1501D.

it'll outpower, but it'll never -- not in this lifetime ever -- outperform the USA1k

... RF has great specs for midline dont they? they're a little more efficient than mtx, they're cleaner, they're tighter. customer service / warranty / and overheating aside, they're probably the best mid-grade amp on the market.


and cadence is pimp ****...

http://www.cadencesound.com/amplifiers.html

one step between your mid level and your high end stuff... The Z7000 is 1 x 1500 @ 1 ohm bridged class AB... decent specs... nice amp. and can be had for about 700 bucks -- so it costs the same as a 1501D, does about the same power, but does it at 1 ohm, and is a nicer build.