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View Full Version : does my HU have enough power?



joelbah
02-03-2009, 04:26 PM
I'm a newb. I just put a kenwood kdc mp205 (22x4 rms) in my mazda protege 5. I am about to replace the stock speakers in the rear doors with some Concept 5.25's that I already have. After that I want to replace the 6x8's in the front doors. I am thinking about getting some pioneer rev 6x8's.

My question is, will my HU be able to power all of these speakers? I'd really rather not get an amp. I don't need it to be ridiculously loud, but I don't want to have to max out the volume etc.

atoprak
02-03-2009, 04:37 PM
Hi,

I dont know any thing about your 5.25s for front doors but pioneer rev 6*8 can deliver 60w rms ... which is way higher than your HU power ... I cant even feed my tsa-1682s withpioneer HU (same 4*22) ... if you install a simple amp you get way better sound from pioneer rev 6*8s.

joelbah
02-03-2009, 04:45 PM
the concept speakers are 100w peak power but I don't know what the rms power is. they ran fine with my old pioneer HU that was probably 22wx4 as well. so what would happen with the revs? they would just be really quiet?

to avoid getting an amp, what are some more efficient 6x8's that are good sound quality and in the same price range as the pioneer rev's?

joelbah
02-03-2009, 04:46 PM
thanks for the input...anyone else got any advice for me?

atoprak
02-03-2009, 04:56 PM
Well,

If you cant provide enough power to the speakers, you cant get the full potential of the speaker.

The problem is if you can deliver 22w, you get better sound with 30w-35w rather than 60w speakers... of course it changes to speaker ... but in general speaking this is it.

... sorry I have no idea about 6*8 models.... these size is not common in my country (we generally put 6*9)...

joelbah
02-03-2009, 05:00 PM
anyone know of any good lower wattage 6x8's in the same price range as pioneer rev's?

Bassdude22
02-03-2009, 05:03 PM
dude i would honestly get an amp, you will be soooooo much happier

Echo42987
02-03-2009, 05:16 PM
no, you need an want an amp

KOL
02-04-2009, 01:20 PM
aftermarket speakers are designed to be amplified. I don't know of any HU capable of properly powering aftermaket gear.

TurdFergueson2
02-04-2009, 01:25 PM
the concept speakers are 100w peak power but I don't know what the rms power is. they ran fine with my old pioneer HU that was probably 22wx4 as well. so what would happen with the revs? they would just be really quiet?

to avoid getting an amp, what are some more efficient 6x8's that are good sound quality and in the same price range as the pioneer rev's?

Your pioneer internal amp was somewhere like 14 RMS. Powering the revs off the HU will give you sound, but using a higher powered amp would be a night and day difference.

joelbah
02-04-2009, 01:33 PM
well the concept 5.25's worked great with just my HU, but maybe 6x8's are a different story, or maybe they would have sounded even better with an amp, but I thought they sounded much better than the factory speakers that they replaced in my old car. I'll put those in the rear doors and see how they sound as soon as I get some baffles.

I guess I have three options here.

1) get some speakers and try them with just the HU and see if they provide the desired results
2) just chill out and be content with the factory speakers (they actually sound pretty good to my inexperienced ears)
3) **** it up and get an amp and some nice 6x8's

option #2 is no fun so I can't do that.

I guess I'll go with option 1) and then I can still upgrade to option 3) later right?

so right now, I have a power acoustik bamf 800/2 amp that is powering my 2 polk ex-10 subs.

what kind of amp should I get for my other speakers...the cheaper the better...used is ok. or should I just use my current amp to power my speakers and get a new amp to power my subs?

how difficult is the installation of a component amp?

joelbah
02-04-2009, 01:43 PM
however, I must say, I do find it hard to believe that there are no 6x8" speakers at all that could be powered by 22w rms and also sound significantly better than the factory speakers in my Mazda.

still open to suggestions in that area

KOL
02-04-2009, 02:06 PM
however, I must say, I do find it hard to believe that there are no 6x8" speakers at all that could be powered by 22w rms and also sound significantly better than the factory speakers in my Mazda.

still open to suggestions in that area Did anybody say that? :confused::rolleyes: Your HU may state 22×4 but it doesn't mean its the truth :fyi:

atoprak
02-04-2009, 02:23 PM
You may go and power the 6*8 with head unit... it wiil give the sound but believe me, if you put a decent amp.. and power it up, you wont believe what you hear... like TurdFergueson2 said.. day and night difference... I had that feeling on my setup which has worse speakers (comparing with rev 6*8)... it is like upgrading from VW Golf 1.6 to Audi S3 :)

eharri3
02-04-2009, 02:38 PM
22 watts RMS means you may actually see 1-10 watts give or take during normal listening. Try it. If it's loud enough that you can fully appreciate your music at say 60-70% of max volume leave it as is. If you find the volume dial needs to be maxed out for you to really appreciate your speakers it's probably time for an amp.

dman4486
02-04-2009, 02:44 PM
well the concept 5.25's worked great with just my HU, but maybe 6x8's are a different story, or maybe they would have sounded even better with an amp, but I thought they sounded much better than the factory speakers that they replaced in my old car. I'll put those in the rear doors and see how they sound as soon as I get some baffles.

I guess I have three options here.

1) get some speakers and try them with just the HU and see if they provide the desired results
2) just chill out and be content with the factory speakers (they actually sound pretty good to my inexperienced ears)
3) **** it up and get an amp and some nice 6x8's

option #2 is no fun so I can't do that.

I guess I'll go with option 1) and then I can still upgrade to option 3) later right?

so right now, I have a power acoustik bamf 800/2 amp that is powering my 2 polk ex-10 subs.

what kind of amp should I get for my other speakers...the cheaper the better...used is ok. or should I just use my current amp to power my speakers and get a new amp to power my subs?

how difficult is the installation of a component amp?

Since you have power wire, remote and a ground....the only things to do when adding a second amp will be a second rca run and a distribution block for the power wire as well as speaker wire running from the new amp up to the doors.

atoprak
02-04-2009, 03:38 PM
for me,
the hardest part is to wire the speaker wires to the doors without any damage to the doors... the proper way is to pass the cable through the cable boot ... but it wasn't easy ...