Whats the difference between these two amps?

I want to know the difference between these two amps
your going to have to copy and paste this link:

and this one


Which of the two would i go better off with because i want to use a car subwoofer that has two speaker subs.

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NachoMahma6 years ago
.  Depends on what you want to do, what kind of cables/wires you have laying around, &c.
.  As steveastrouk says, there not a whole lot of difference. 240W is not that much louder than 150 (power:loudness is logarithmic, so it takes 1500W to be twice as loud as 150), but, if the ratings are reliable, it would be nice to have a little extra headroom. Mounting options are the main difference.
.  Amplifiers don't care what a speaker/driver is in, it only cares about impedance.
.  BTW, if you plan on driving a car sub in a car, both of those units are mains powered.
diabloboy (author)  NachoMahma6 years ago
well see i want to have the car sub in my living room, so i want to buy a good amplifier so i could hook it up to the speakers so they would be active and not passive and have enough power. The car sub that i have has 2 speakers and im not sure if it would give the both speakers enough power. I did hook it up to a LS21 2.1 Stereo Speaker System from logitech because i had took off the little sub that it had and hooked up my car subs onto that and well sure it had a bit of bass, i was able to feel it on the floor but not the type that i was expecting like you would feel almost like in a surround sound. and for the speakers they are jbl they look something like these http://www.amazon.com/gp/product/B00112B58M/ref=s9_simh_gw_p23_d0_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-4&pf_rd_r=0SZZ6D0Y0Y7X8N0T4ZYC&pf_rd_t=101&pf_rd_p=470939031&pf_rd_i=507846
diabloboy (author)  diabloboy6 years ago
and also i really dont know if the speakers that i have, have the same specs to the ones that are in the link
. Impedance, impedance, impedance. If the speakers/drivers are rated for 4 ohms, then the amp needs to be 4 ohms. 8 ohms, 8 ohms. &c. If you can't determine the impedance of the speakers, then you're going to have a hard time determining which amp may or may not work. If all else fails, use an ohmmeter to get a ballpark figure (eg, if you read 3-5 ohms, you can be reasonably sure they are 4 ohm speakers).
.  It's kind of difficult to buy a bad amplifier nowadays. One of those amps may have better specs than the other, but I'm betting the differences are marginal and likely inaudible in most listening environments. If your ears are that sensitive, you need to be asking on an audiophile forum, not a general DIY.
.  Either amp should work well in a small-to-medium-sized room. As has been said before, might as well go with the slightly more powerful amp (especially since it is cheaper).
diabloboy (author)  NachoMahma6 years ago
well alright then thanks so much i guess thats enough info thanks so much man
There's no reason to choose one over the other, except for mounting details - the SA240 is a panel mounted design, the APA150 is for a hi-fi setting.

Personally I'd go for the head room of the larger amplifier, and build it into the cab of your sub woofer.

diabloboy (author) 6 years ago
so like re-edited the question and well your going to have to copy and paste and well dude i already know that difference i want to know like the other difference between the connections and stuff thats why i provided the links so you guys could see for yourselves
Re-design6 years ago
Both links go to the same amp for me.
NachoMahma6 years ago
. Going by the link descriptions: the first amp is 150W; the second one is 240W.