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post #1 of 5 (permalink) Old 8th July 2010, 21:40 Thread Starter
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can someone explains subwoofers please?

Hi Guys,

I'm sure we're all aware that the sound system in the fn2 is, well rubbish. I've been wanting a sub for a while now but im not sure which one to get and to be honest im not really sure what the figures mean.

My mate has a Vibe Space Active Sub 12", which produces 3000W power at peak and 1000 RMS, can someone explain what these two figures actually relate to in terms of sound/sound quality?

also, i've been looking at a Vibe CBR Active Sub 12" (has anyone used this? it gets very good reviews), this produces 1600W at peak and 800 RMS but whats the difference between that and the one above, i.e. what will that extra power mean? if its just louder im not that fussed, im just looking for a decent kick on the bass as i listen to a lot of R&B/Hip-hop and it just isnt the same on the CTR sound system because its so flat!

cheers guys!

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post #2 of 5 (permalink) Old 9th July 2010, 14:40
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Watts != sound pressure (how loud it is).

Good speakers have higher sensitivity so can produce louder sound with less watts to them.
Also, pure power has NOTHING to do with sound quality.

You can have 100W sound system which sounds great in car, and 5000W which just rattles your teeth, but all your hear is distortion.

As for car subwoofer -> for 'normal' listening you do not need anything above 400W RMS for subwoofer. And that itself is already quite loud.
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post #3 of 5 (permalink) Old 9th July 2010, 14:53
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post #4 of 5 (permalink) Old 9th July 2010, 14:55
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Agree with most of this. If you are not going to switch the stock speakers and amp them, I'd say a decent 4 Ohm 250 watt sub will do the job. BTW when I talk Watt it's always RMS. More than 400-500 watts in a car is by default "to much" because everything around starts to resonate (rattle, vibrate, hum,...) and quality is zero.
In my Civic I have upgraded the standard speakers to Alpines. They are not amped though, so they are still connected to the HU. I added a 8" 4 ohm sub with a decent 300watt amp, and I still had to turn down the sub's volume because it was to loud compared to the sound form the speakers.

K.
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post #5 of 5 (permalink) Old 9th July 2010, 21:50 Thread Starter
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Quote:
Originally Posted by Nick7 View Post
Watts != sound pressure (how loud it is).

Good speakers have higher sensitivity so can produce louder sound with less watts to them.
Also, pure power has NOTHING to do with sound quality.

You can have 100W sound system which sounds great in car, and 5000W which just rattles your teeth, but all your hear is distortion.

As for car subwoofer -> for 'normal' listening you do not need anything above 400W RMS for subwoofer. And that itself is already quite loud.
Quote:
Originally Posted by Koen View Post
Agree with most of this. If you are not going to switch the stock speakers and amp them, I'd say a decent 4 Ohm 250 watt sub will do the job. BTW when I talk Watt it's always RMS. More than 400-500 watts in a car is by default "to much" because everything around starts to resonate (rattle, vibrate, hum,...) and quality is zero.
In my Civic I have upgraded the standard speakers to Alpines. They are not amped though, so they are still connected to the HU. I added a 8" 4 ohm sub with a decent 300watt amp, and I still had to turn down the sub's volume because it was to loud compared to the sound form the speakers.

K.
cheers for the replies lads, i was thinking of gettin the sub (active with built in amp) and changing the front speakers for vibe ones. Im pretty sure that you can change the settings on the subs to lower the power output so that its not on 'full blast' if you like all the time is that true?

i have found the Vibe CBR active online for 169 (RRP300) whihc i thought was a good bargain but i simply wasnt sure if that level of power output would be sufficient as the only one i'd really heard was my mates like i said above...the sound quality from his is really good but im pretty sure he has his turned down low
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