10" Alpine X-Type HELP!!! - United Bimmer Community

**BlkMagiks** · 06-24-2006, 08:01 PM

K ive got two x-types for my 325is but i dont have a good amp to run them. If anyone has any expierience with these subs can u give me a hand?

**RealBmw 02** · 06-24-2006, 08:30 PM

I have a friend who used to run the x-type tens and he ran the alpine amps. I believe they were type 'D'. If I am correct the type D amps are meant for subs and feature a single channel. The most important thing is to match the impedance of the sub and amp. For instance, if you have a sub being run on 4 ohms, then your amp needs to be 4 ohms as well.

**da_bull** · 06-25-2006, 07:26 AM

These requires a lot of power to perform like they are designed. The Alpine amps do a good job. The MRP-M650 is a single channel class D amp netting 400W RMS which will do a fairly decent job.

The class D amps are typically a sub-only amp, the design of these can produce a lot of power and are efficient in their design, resulting in low heat.

When looking at an amp, throw the peak (or max) ratings out the window. Those are worthless numbers. Look at the RMS ratings, you need something around 300-500 watts per sub.

Hope that helps, good luck...

**Rooz** · 06-25-2006, 10:24 AM

JL 1000/1 would be great for those subs.

Class D is signal quality. Subs, don't care that much about the signal quality.

Class A/B is for speakers. And Class A is best signal you can get VERY few amps can do class A!

**Dudesky** · 06-25-2006, 11:21 AM

Amplifier classification has more to do with its inherent design than what speakers they'd be ideal with, although the 2 previous suggestions are correct: class D will exchange less energy into heat. While class A is the worst in terms of heat, it produces the cleanest output.

More important for subwoofer applications are the amp's slew rate and damping factor; w/o getting into detail, the higher the values, the better the amp is suited for longer excursions typical of subs

**BlkMagiks** · 06-27-2006, 11:17 PM

thanks all (i was actually thinkin the JL 1000/1) but was wonderin if there were better ones around for these particular sub

**Rooz** · 06-28-2006, 09:06 AM

you can also try to Alpine PDX1.1000 they look sweet

**da_bull** · 06-28-2006, 08:23 PM

^ I second that amp...

**BlkMagiks** · 06-29-2006, 10:27 PM

are those the new amps that are really small? but still put out the 1000W?

**Rooz** · 06-29-2006, 10:47 PM

Same amps used on this car...

http://www.alpine-usa.com/en/fun/P-L...s/06-Sinster6/

**k318iS** · 07-01-2006, 03:09 AM

The PDX series are a spectacular amp... I've got a 11000 and a 4150 on the way from Alpine!

**Rooz** · 07-01-2006, 06:59 PM

Quote:

Originally Posted by k318iS

The PDX series are a spectacular amp... I've got a 11000 and a 4150 on the way from Alpine!

Sweeeet, let us know how they turn out for you!

I have two audison amps right now... will post pics once I have all the stuff here

**k318iS** · 07-02-2006, 02:50 AM

Quote:

Originally Posted by Rooz

Sweeeet, let us know how they turn out for you!

I have two audison amps right now... will post pics once I have all the stuff here

I will, no worries... I plan on showing off the system once it gets installed...