I just bought one 12" alpine type-r sub (4+4ohms). And a mono-channel alpine m-450 amp rated at 500w @ 2ohms, 220w @ 4 ohms. I heard if i wire the sub with the 4 ohms i will only get 110w of power. I this true? Is that underpowering the sub by too much? and will it sound good?
2007-07-07 16:54:29 · 6 answers · asked by Anonymous in Cars & Transportation ➔ Car Audio
the 450 is rated 220x1@4ohm
and 400x1@2ohm.
At only 4 ohms, you would have to turn the gain all the way up achieve desired sound level, but this increases the chance of clipping(distortion) and will damage the sub after repeatedly doing so.
this sub has a 500 watt rms(continuous) and 1500 watt peak, so 220 watts peak would be barely enough to properly move this speaker, and underpowering a sub is worse than overpowering it. so your answer run it at 4 ohms in the largest size sealed box it recommends and you should be satisfied with your purchase
2007-07-07 17:10:44 · answer #1 · answered by logan_sell 5 · 1⤊ 1⤋
A subwoofer with two 4-ohm voice coils is, effectively, a 2-ohm sub. Wire the voice coils in parallel, following this diagram, and you'll get the amp's 2-ohm power output.
http://www.rockfordfosgate.com/rftech/woofer_wizard/1_4ohmDVC_2ohm.gif
In theory, you could wire the sub's voice coils in series, for a final impedance of 8 ohms. In that case, you'd probably end up getting about 110 watts from the amp. But that amplifier matches very well with a single Type-R as a 2-ohm load.
2007-07-08 01:05:50 · answer #2 · answered by KaeZoo 7 · 1⤊ 0⤋
the two you have are a good match. but I would have to say just run it at 2 ohms. use both voice coils
"I heard if i wire the sub with the 4 ohms i will only get 110w of power. I this true?" no, the amp says 220w at 4 ohm its going to be 220w. unless the amp makers are liars.
2007-07-08 00:12:21 · answer #3 · answered by scott p 5 · 1⤊ 0⤋
yes 4ohm you will only be hitting that sub halfway. if the amp and speaker are rated for 2 ohm run them that way. You will get more thump with 2ohm.
2007-07-08 00:08:54 · answer #4 · answered by nitehawk8075 3 · 2⤊ 0⤋
run your sub in parallel... its a perfect match and you'll get the best sound from it. just make sure your sub is in the reccomended sized enclosure and your all set.
2007-07-08 08:47:01 · answer #5 · answered by Bruce 3 · 1⤊ 0⤋
it would sould distorted if your ran it at 220 watts rms not enough to push that sub.
2007-07-08 02:20:53 · answer #6 · answered by sid23man 3 · 0⤊ 3⤋