Question About This Amp.

[Jphipps187]

I am really thinking about getting this amp, it seems like it is pretty decent and it is in my price range. The only question i have is if it can power the two subs i want.
Here is the amp im looking at.

http://www.bestbuy.com/site/olspage....=1166840602629

And Here is the type of subwoofer im going to get. Im getting two of them.
http://www.bestbuy.com/site/olspage....=1166840602883

Now can That amp above, power Two of those 12" subs? And if so will it sound good?

Another question i have is...do you think i should power my car speakers(they are kenwoods-6x9's from bestbuy) with an amp, or should i just leave them alone and only power my subs.

[cardude007617]

have u heard those subs yet? well i've heard em before and think they're garbage. but thats jutst my opinion.

[Jphipps187]

No, i havnt herd them...im going to bestbuy soon to listen to them before i buy them.

[cardude007617]

ok good. do that, then get back to us. if u dont like em, look online for a better brand. the amp isnt bad, but won't be able to push much more than entry level subs.

[Jphipps187]

and what do you all think about hooking my car front door panel speakers and my rear deck speakers up to an amp? Is this a good idea...i have been told before that its a good way to blow your speakers, is this true?

[kuecker_dj09]

well if the speakers are aftermarket....then yes amp them. make sure the amp has a high pass filter too. as for subs, thats a decent entry level setup. i have a friend that has that sub in a ported box....says he loves it

[caraudiodave]

first off, that amp only puts out 250 watts RMS. you cant even power one of those subs (based in its supposed power rating) with that amp. ive never heard those subs, but i only like kenwood for head units, the rest is junk.

powering aftermarket speakers off the deck is a great way to blow them. they need to be powered, but they need clean power. dont get a junk amp, it wont help you much.

[jperryss]

Originally Posted by caraudiodave

powering aftermarket speakers off the deck is a great way to blow them. they need to be powered, but they need clean power. dont get a junk amp, it wont help you much.

I disagree. If you drive them beyond their limits, then yes, but the same goes for factory speakers.

He can replace the factory speakers and run them off the headunit, and decide whether or not he wants to amp them later.

[Jphipps187]

Originally Posted by jperryss

I disagree. If you drive them beyond their limits, then yes, but the same goes for factory speakers.

He can replace the factory speakers and run them off the headunit, and decide whether or not he wants to amp them later.

Thats what i had planned on doing...i didnt really want to spend more money on a 2nd amp just to add a little power to my speaker. I always thought that if you put too much power in the speakers from the amp that the speaker whould blow.

[jperryss]

Originally Posted by Jphipps187

I always thought that if you put too much power in the speakers from the amp that the speaker whould blow.

Well it can. Which is why you need to get an amp that has an RMS rating fairly close (lower is OK) to the RMS rating of the speakers.

But yeah, I suggest replacing the speakers first. If you want more, there are ways to improve the sound of those speakers, including deadening the surrounding panels and/or adding an amp.

NOTE if you have one of those Monsoon systems (factory amp on the left side of the trunk behind the carpet) then there may be a bit more work involved in getting your aftermarket speakers wired up properly. I would check the stickies.

[Jphipps187]

Originally Posted by jperryss

Well it can. Which is why you need to get an amp that has an RMS rating fairly close (lower is OK) to the RMS rating of the speakers.

But yeah, I suggest replacing the speakers first. If you want more, there are ways to improve the sound of those speakers, including deadening the surrounding panels and/or adding an amp.

NOTE if you have one of those Monsoon systems (factory amp on the left side of the trunk behind the carpet) then there may be a bit more work involved in getting your aftermarket speakers wired up properly. I would check the stickies.

Ok thanks for the help.

[cardude007617]

ya, the monsoon really screws things up for car audio

[caraudiodave]

what you guys all fail to recognize is that power doesnt blow speakers, distortion does. a factory deck puts out way too much distortion for most decent aftermarket speakers, and especially at higher volumes, a factory deck distorts enough to blow them.

you can do what you want, i have no personal gain from giving you advise based on my 13 years of car audio experience.

[jperryss]

Originally Posted by cardude007617

ya, the monsoon really screws things up for car audio

Sure does!

[jperryss]

Originally Posted by caraudiodave

what you guys all fail to recognize is that power doesnt blow speakers, distortion does.

Agreed.

a factory deck puts out way too much distortion for most decent aftermarket speakers, and especially at higher volumes, a factory deck distorts enough to blow them.

You're making three assumptions there:
1. That factory speakers are MORE durable than 'decent' aftermarket speakers (ie factory speakers won't blow but aftermarket ones running off of the same source will).
2. That you won't HEAR them distorting bad enough to know that you're damaging them.
3. That the aftermarket speakers won't sound better (louder, cleaner, and more dynamic) than factory speakers when run off of the same source, and also that they won't be able to go louder than factory speakers before they start distorting.

And IME these assumptions are wrong 95% of the time.

you can do what you want, i have no personal gain from giving you advise based on my 13 years of car audio experience.

Trust me, I am all for externally amping every speaker in the car (or at least running them off of a higher-powered aftermarket headunit). And I'm not going to pretend that the factory deck puts out gobs of clean pure power. But amping replacement door/rear deck speakers is NOT a requirement, even though it will probably help. I would however recommend putting a capacitor (bass blockers) in-line with the new speakers or using some type of high-pass filter (especially for the door speakers) because even though the aftermarket speakers will likely be able to play deeper than those crappy stock speakers, they'll still be seeing lower frequencies than they can safely reproduce, which will cause more distortion and WILL damage the speakers. The high-pass filter is key whether they are amped or not.

[caraudiodave]

Originally Posted by jperryss

Agreed.



You're making three assumptions there:
1. That factory speakers are MORE durable than 'decent' aftermarket speakers (ie factory speakers won't blow but aftermarket ones running off of the same source

that is all i disagree with. factory speakers can take more abuse as far as distortion goes. thats why they dont blow (as easily) while high end speakers will blow. most cheap speakers take distortion, but dont sound as good because the parts used are not as precise.

as a side note, factory systems are designed and set up so that the speakers wont blow from the deck under any condition. they fail to account for deterioration over time by sun light and dry rot. if you run a fully factory system that was put together by the manufacturer (meaning they were all meant to work together), all new parts will work and you CANT blow the speakers.

[jperryss]

Well, I don't have the scientific knowledge to confirm or deny whether or not a cheaper, crappy factory paper cone speaker can handle more abuse than a well-built aftermarket speaker. In an odd way, I guess it could be possible. But, I can only base my stand on my own experiences. Until someone comes along with the science behind factory vs aftermarket 'abuse', I guess we can agree to disagree.

That being said...in the five cars that I've owned since I started driving (sometime in the 90s ) I've destroyed a few factory speakers, with factory decks and aftermarket decks. Were some of those speakers nearly 5 years old at the time and dry-rotted to hell? Definitely. Was trying to get them to play too low the cause at least a couple times? Probably. But I have NEVER blown a well-built aftermarket speaker (or even a crappy aftermarket speaker, LOL) by running it off of a low-power crappy factory deck or even a higher-powered aftermarket deck. And I listen to music pretty loud.

Like I said above, protecting the speakers from freqs that are too low for them is key, and any speaker should be able to take more 'volume abuse' when it's not being subjected to as much 'frequency abuse'.

Until then...

Originally Posted by caraudiodave

that is all i disagree with. factory speakers can take more abuse as far as distortion goes. thats why they dont blow (as easily) while high end speakers will blow. most cheap speakers take distortion, but dont sound as good because the parts used are not as precise.

as a side note, factory systems are designed and set up so that the speakers wont blow from the deck under any condition. they fail to account for deterioration over time by sun light and dry rot. if you run a fully factory system that was put together by the manufacturer (meaning they were all meant to work together), all new parts will work and you CANT blow the speakers.

[Jphipps187]

Ok, you guys are all talking about the speakers playing frequencies too low for it too handle, but my speakers wont be playing that much of low frequencies, cuz im going to have my bass on the speakers turned all the way down, and run all bass through my Subwoofer. Is that what i should do to avoid blowing my car speakers?

[Jphipps187]

I was also wondering if it would even be worth the money to replace my factory speakers. I already have an aftermarket deck (JVC), and i was looking at a pair of $100 kenwood 6x9's and a pair of $60 Kenwoods for the door panals. Is this a waist of money? I dont know how much a pair of good speakers go for so i have no idea if i should replace mine with these or not.

[cardude007617]

for post 18, pu the high pass filter on on your deck. what im gonna do wednesday (wen my subs get here) is put my deck on the lowest high pass filter it has (50) which is still above the lowest my speakers can go (40). so i'll still get some bass outta em yet.