Amp the mids and highs or no?
drummer81
Posts: 20
I have four db675's running on an alpine cda9847 that puts out 18 watts rms to each speaker. My plans are to add 1 12" kicker comp dual voice coil in a ported box running at 2 ohms off an alpine 350x1 mono sub amp. As of now, the speakers sound great as is, but i don't want to over power them with a sub. I want clean sound. If I can avoid it, I don't want to amp them. Will I have too?
Post edited by drummer81 on
Comments
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Will you have to? No.
Will you get the best sound and performance out of them with your head unit? Not even close.
A head unit is a horrible power source. They only make about 10-12 watts per channel and thats probably at 1% THD. Get an amp. You dont have to get a very expensive one, a $120 Profile would work wonders. I guarantee you that once you amped those speakers you wont believe the difference.polkaudio sound quality competitor since 2005
MECA SQ Rookie of the Year 06 ~ MECA State Champ 06,07,08,11 ~ MECA World Finals 2nd place 06,07,08,09
08 Car Audio Nationals 1st ~ 07 N Georgia Nationals 1st ~ 06 Carl Casper Nationals 1st ~ USACi 05 Southeast AutumnFest 1st
polkaudio SR6500 --- polkaudio MM1040 x2 -- Pioneer P99 -- Rockford Fosgate P1000X5D -
Amp those puppies up, you will not be dissapointed
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KnuKonceptz
Second Skin -
ditto - it's quite remarkable the difference that even a small amp can make in clarity of sound, if not necessarily in sheer volume... it will sound much better if the highs can keep up with the bass, which will be difficult to manage from only an HUIt's not good, very fundamentally simply not good. - geolemon
"Its not good enough until we have real-time fearmongering. I want my fear mongered as it happens." - Shizelbs -
On a drive this morning I had the windows down and I could notice that an amp would be a must, so if my db's have a rms rating of 60 and a peak of 180, how much should the amp push per channel? I plan to run all four off one amp and with a high-pass filter at 4ohms.
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the amp should be able to put out at least 50 RMS per channel...75 rms would be better...
My $0.02<|> -
agreed, you want an amp that can make that RMS or above, so you're looking at an amp that does about 75W x 4 Channels @ 4 ohms... strangely enough, polk's own 400.4 fits the bill perfectly It's not good, very fundamentally simply not good. - geolemon
"Its not good enough until we have real-time fearmongering. I want my fear mongered as it happens." - Shizelbs -
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My mid/high speakers are two ohm and were killing my HU...bought two of the C300.2s at Fry's fire sale and the results are unbelieveable. Definitely amp them, you won't be sorry.
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