noss88

Car: 2001 Civic LX (em2)

Front Speakers: Alpine SPR-17S
Peak Power Capacity: 330W
Max RMS Power Capacity: 110W

Rear Speakers: Alpine SPR-69C
RMS Power Capacity: 100W
Peak Power Capacity: 300W

Radio: Alpine CDE-9872

Hey guys,
I'm looking for a 4 channel amplifier to power my 4 speakers, what i'm looking for is "best bang for the buck" I did look at the alpine PDX series, but i wanted to know what other amps out there that can perform better or as good as the PDX series for lower than the PDX series price. I was thinking of getting an Alpine PDX 4.150

specs of the PDX 4.150:
# RMS Power Rating @ 4 ohms: 150 watts x 4 chan.
# RMS Power Rating @ 2 ohms: 150 watts x 4 chan.
# RMS Power Rating @ 4 ohms bridged: 300 watts x 2 chan.

but im not too sure if that amp is enough or too much power for the speakers. thanks in advance.

fcm

JL Audio also makes some pretty good amps, the PDX 4.150 would be a good amp to go with, it is not too much power for the speakers, [it is better to be over-powered the underpowered.
MTX also makes a good amp, not as pricey as Alpine or JL Audio. 94

ken9

Are you getting the 4 or 8 ohm speaker? I assume the 4 ohm. Since that each channel will give you 150 watts but i don't know if that amp's truly underrated. What's the R.m.s of that amp, 300?

fcm

Alpine PDX amps have a regulated power supply, output wattage is the same into 2-4 ohms, rated power on the 4.150 is 4x150W RMS into 2-4 ohms @14.4V.

Alpine Type R speakers, [SPR-17S and SPR-69C] are all 4ohm systems. 94

ken9

That amp isn't going to power that 4 speaker you have. It going to be under power.

twentyhurtz

dude are you retarded? his speakers are about 100w rms each, he is gonna have up to 150w rms per speaker.. thats 50% more than recommended.. i agree with fcm and your choice on the alpine amp, plus alpine has a classy looking amp, its clean and simple. also i used to have an eclipse 4ch amp, it was sweet, but the heat sink was like a 3 on a scale of 1-10, so it ran rather hot, even for a class a/b.

audioroach

there are plenty of amps that can do what you want to do,if size is not an issue
for you. But others have posted a great amp choice.

twentyhurtz

i found the amp you NEED get this, all problems solved

http://www.woofersetc.com/p3404/X-24...-Amplifier.htm

oh and if someone tries to tell you that BRAX is pawn shop trash just because they have never heard of it, well, they got another thing coming....

98civdx

wrong.
over prowerd by 50 watts.



there is always, pioneer,kicker,jl, other alpine amps. there are more these are just the ones i can think of right now.

ken9

I ask him how much is the amp putting at total? I'm assume it 300. I don't think each speaker get 150 watts.

igor

You quoted the RMS figures for that amp when you asked what the RMS figures were. It's 4 x 150WRMS @ 4 ohm load.

djkurious

What is the RMS of EACH speaker? I am thinking 55 Watts RMS? I'm thinking the RMS rating of both speakers TOTAL is 110 RMS...

igor

It doesn't quite work like that, because the speakers are playing different frequencies...

mrdeadman

Dear lord that thing is amazing.
I'm going to the pawn shop now.

mrdeadman

rileyrat

Why break up a trend, get the Alpine PDX-4.100 and call it good. Will push 100rms per channel, keeps the brand the same, and it's a sexy amp.

fcm

Come on guys, lets get it right, and not confuse the OP.

The speakers the OP has are the Alpine Type R SPR-17S an "over-sized" 6.5" 2way component set, continuous power handling, [RMS] is 110W, peak is 330W, his rear speakers are the Alpine Type R SPR-69C a standard 6x9 inch 2way coax speaker, continuous power handling, [RMS] is 100W, peak is 300W.

The Alpine PDX-4.150 he is looking at is the perfect amp for the speakers, the amp is 4x150W RMS into 2 - 4 ohms, [speakers are 4 ohm].

Although the PDX-4.100 would probably work, it is underpowered by 10W a channel for the front speakers and it is better to be overpowered then it is to be underpowered.

As mentioned there are lots of good amps that will do the job, I would not use anything under 2x125W RMS for the fronts and no less the 2x100W RMS for the rears, a 4x125W RMS is the smallest 4ch amp I would recommend, don't forget on an overpowered amp the gain on the amp can always be turned down, if your underpowered all you can do is keep the HU volume down so as not to drive the underpowered amp into constant clipping, which will eventually damage the speakers. 94

jason0123

I agree with FCM it is always better to have more power then not enough. But for what it is worth my shop has had 0% luck with the PDX line. Every single one has had some sort of problem. I would personally prefer an Alpine f-600. but thats just one installers opinion

ken9

If you connecting both 2 channel. It will not be under power, but if he going to be using 4 speaker then it will be under power. Each speaker can handle up to 100 R.m.s and that amp isn't going to power 4 enough. You can either get another 2 channel and power the rear.

fcm

Jeezzzz, what part of 4 channel amp do you not understand, the Alpine PDX-4.150 is a 4 channel amp, 4 channels at 150W RMS per channel, more then enough to drive the 4 speakers the OP has. 94

twentyhurtz

Fail....

noss88

hey guys thanks for the opinions. I think i'll get the pdx 4.150 as i trust FCM's suggestions. Obviously i'm not very knowledgeable about car audios, but i like to save money and do DIYs. So to install this amp, considering i'm a beginner, should i just buy an installation kit, or should i just buy stuff individually?

fcm

If you buy an "amp kit" get one without the RCAs and with an ANL type fuse, then just buy the proper length RCA, the RCAs that come in the kits are too long, 18 - 21 feet. 94

twentyhurtz

yea i've seen ANL fuses as small as 60a before. whats wrong with 21ft rca's? i love bundling up the extra and making a big bulge in my carpet... ha

fcm

Yea, we call it "the wad" or "lumping it" and only good if you insist on having induced noise problems, most of my customers would prefer not to have any noise on there systems, 94