will this amp be sufficient for Alpine typer spr 17s?

[rob1000]

Ok so I just installed my spr 17s last night and they sound great. I was amazed just how nice they sound from my 50watt Pioneer head unit (after what most people say when not amped). Next step will be to get them running with an amp.

My little brother offered to give me his 4 channel Clarion amp. Its a APA45 (50watt x 4 channel at 4ohm).
http://www.testfreaks.com/car-amplifiers/clarion-apa450/

my speakers:
http://www.testfreaks.com/car-speakers/alpine-spr-17s/

Now I've read plenty of people saying that the alpines really like 110watt+ RMS at 4 ohm. My question, is there any way i can efficiently run my speakers by bridging this clarion amp to 2 channel? This would change it to 2ohm yeah? would these speakers run ok at 2ohm or will i lose clarity?

I'm not after cruising around with windows down blowing my own and others ears. I just want a nice sounding, punchy system.

Any help is greatly appreciated. cheers.

[euro_tr4sh]

if you look at the terminals on the amp it will show you how to bridge them, and it wont change it to 2omh... the speakers are 4ohm, the amp has nothing to do with the calculation of what impedance the speakers are.... that said, your head unit is only producing around 15-20 watts rms... the clarion amp will run them fine

ps- the link for the amp doesnt work

[rob1000]

if you look at the terminals on the amp it will show you how to bridge them, and it wont change it to 2omh... the speakers are 4ohm, the amp has nothing to do with the calculation of what impedance the speakers are....

Ahh thats whats been sorta fuzzy with me... the whole resistance thing. yeah that makes sense the speakers determine the resistance not the amp. ok so if i bridged it would roughly double the constant RMS of the amp to the speakers yeh?


that said, your head unit is only producing around 15-20 watts rms... the clarion amp will run them fine

15-20 might even be optimistic heh ;)


ps- the link for the amp doesnt work

here's the link
http://www.testfreaks.com/car-amplifiers/clarion-apa450/

Cheers for your help. Saved me spending on a new amp

[rob1000]

Hmm according to this article bridging will indeed cut the ohms to 2 from 4 is that right??

http://www.ehow.com/how_5305710_bridge-channel-amp.html


Keep in mind that when bridging an amp, the resistance load (measured in Ohms) is effectively cut in half. For example, if you are powering a 4 Ohm subwoofer with a bridged amp, the resistance load would drop to 2 Ohms. It's important to make sure that you're amp is capable of handling a 2 Ohm load. Check your amp's manual for that information.

[Joe Bellissimo]

Its fine to run it.

In really oversimplified terms, the resistance at the amplifier needs to add up to the resistance at the speaker.

If its a single channel it will be 4 ohms at the amp which is 4 ohms at the speaker

If its 2 channels bridged then it will need to be 2+2 ohms at the amplifier (2 ohms on each of the 2 channels) which adds to 4 ohms at the speaker.

I've simplified that a bit so so the perfectionists will rage at that explanation lol!

[ICACHA]

if you want to help someone with a "simple" answer dont make them feel retarded reading your reply as it makes no sense to someone who doesnt even know what youre talking about.

use google to search and find the answer to the question then link it, if thats still too hard for someone to understand then they really need to work it out for themselves by doing their own research and try to understand it in their own way.

make sense?