Alpine Type R (SWR-1242D)

Darthness · Post by **Darthness** » Thu Jun 08, 2006 12:59 pm

thats was 147.9 on the AC... so it may be a little loewer on the termlab, which is what most competitors go by. either way a very good score.

Bwcad1 · Post by **Bwcad1** » Thu Jun 08, 2006 2:33 pm

the ac is off between 6 and 8 db. from the video you can tell its the mic not the sensor. single 12 in a trunk car at anywhere between 141-143 is pretty good.

Bwcad1 · Post by **Bwcad1** » Thu Jun 08, 2006 2:34 pm

i had a single type r in a aero ported box built by sinister audio and it did low to mid 140s on the tl. on 500 watts.

the dawg · Post by **the dawg** » Thu Jun 08, 2006 2:46 pm

O.K. If I went with a dual 2 ohm could I run a 2 channel amp bridged? ,the amp would see a 4 ohm load or a 1 ohm load. I am looking at the Hifonics zx4000 which puts out about 400 x 1 @ 4 ohms bridged.--????

audiobass10 · Post by **audiobass10** » Thu Jun 08, 2006 3:04 pm

You'd wire the sub in a series configuration bridge the amp yield a 4ohm load. Still, the Type R could use more power IMO.

the dawg · Post by **the dawg** » Thu Jun 08, 2006 3:04 pm

I will probly go with a sealed box and a 2 channel amp (Hifonics zx4000). Should I go with a dual 2 ohm or a dual 4 ohm Alpine type R ???

the dawg · Post by **the dawg** » Thu Jun 08, 2006 3:08 pm

I don't want the bass overpowering so hopefully 400 watts rms bridged with that amp will make the sub hit good without overpowering my MB Quart door speakers. Also has anybody used this sub in a small sealed box??

Waldodamon · Post by **Waldodamon** » Thu Jun 08, 2006 3:22 pm

the dawg wrote:I don't want the bass overpowering so hopefully 400 watts rms bridged with that amp will make the sub hit good without overpowering my MB Quart door speakers. Also has anybody used this sub in a small sealed box??

Yes, I have used this sub in a small sealed box. I installed a 10" Type R in a 1 cu ft sealed box, which is small by my personal standards. 400 wrms isn't going to touch it. You'll be cranking the gain and burning the VC before you know what happened. If you're going that small with a 12 sealed, get a 1000 wrns amp and keep it half gain if you're that concerned about overpowering your mids and highs....

::EDIT:: May I recommend buying the dual 4 VC and wiring it in parallel, buying a MONO amp rather than a 2 channel, preferably a mono block that does 1000 wrms at 2 ohms......let me do some research for you....

Here's one, but check with these other guys, I know some of Hifonics' products were sketchy for a little while....

http://ikesound.com/product-product_id/4369

Darthness · Post by **Darthness** » Thu Jun 08, 2006 3:26 pm

scarrell should get it metered again with the deadener in and see if there is any gain.

the dawg · Post by **the dawg** » Thu Jun 08, 2006 3:45 pm

Hey waldodamon, What amp do you have powering your 10" type R???