Crystal CMP 12

[des343 10+ year member]

i have two of these does anyone know anything about them? i have about 950 watts going into 2 of them and im not sure if i should be impressed or get more power to them

they arnt all that but are AWESOME quality im just wondering if i need more power to really hear these things

Click to read more...

 

[audioholic 5,000+ posts]

The CMP was/is an underhung design, decent output but geared more towards SQ. I dont remember their power rating though.

 

[des343 10+ year member]

they are listed as 700 RMS.

 

[IonRL205 10+ year member]

If they are 700 RMS each and you're running 950 RMS then you definitely have room for more power. Put around 1500 watts to them and you should be happier.

Also what amp are you using? Your amp itself might not even be putting out rated power.

 

[whitedragon551 5,000+ posts]

they are listed as 700 RMS.

You sure about that? The CMP10 is rated for 1000wrms.

Here are T/S specs on the CMP12:

# Fs 28.6 Hz # QMs 5.9

# VAS 2.68 cu ft / 75.9 Liters

# CMs 74.61 in / lb / .207 mm / N

# MMd 5.04 oz / 143 Grams

# Xmax .55 in / 14 mm

# Qes .37

# Re 3.3 Ohms

# Z 4.0 Ohms

# BL 15.4

# Power Handling 1000 Watts RMS

# Qts .35

# SPL 88.6 dB

# Voice Coil Diameter 3.0"

# Displacement .13 cu ft

# Mounting Depth 7 3/8"

 

[Liquid Bass 10+ year member]

Pics?

 

[des343 10+ year member]

on the website they are listed as 700 (crystal website)

but i am running one AP1500d on it which these subs are only single 4 ohm coils so i can only run them at 950 max at 2 ohms...id like to see these things when powered correctly?

here are images

http://img59.imageshack.us/i/81764438.jpg/

http://img14.imageshack.us/i/49034743.jpg/

 

[R34P3R 10+ year member]

on the website they are listed as 700 (crystal website)but i am running one AP1500d on it which these subs are only single 4 ohm coils so i can only run them at 950 max at 2 ohms...id like to see these things when powered correctly?

here are images

ImageShack® - Online Photo and Video Hosting

ImageShack® - Online Photo and Video Hosting

If I'm seeing correctly in those pictures, your box is on your backseat? Power may not be your issue...

 

[des343 10+ year member]

If I'm seeing correctly in those pictures, your box is on your backseat? Power may not be your issue...

only at the time the pictures were taken........

 

[disturbed471985 5,000+ posts]

A pair can take 2k assuming its a clean unclipped signal.

 

[RAM_Designs 5,000+ posts]

Good subs, don't see them very much anymore.

 

[denim 5,000+ posts]

I always liked them, wish I had picked up some when I was building the collection.

 

[audioholic 5,000+ posts]

I havent looked at Crystal's website, but the confusion/differences in rated power may be coming from the fact that Crystal released a CMPx2 later that, iirc, was rated for a bit more power than the original CMP's.

If anyone here remembers when the CMP was a current model, that was back in the day when everyone was comparing the Alumapro Alchemy versus SoundStream Exact versus Crystal CMP in the 'which is the best SQ sub available' threads. The PPI Pro was also a big contender in the SQ discussions. That was also when the Stroker was considered the top dog SPL driver, and the GZ Nuke was the all around favored ground pounder sub. Was also when the W7 and IDMax were rumored to be on the horizon. Those 7 or 8 subs pretty much dominated the subwoofer section of every car audio forum. Good times.

 

[des343 10+ year member]

well i need to sell these ASAP!

 

[denim 5,000+ posts]

I havent looked at Crystal's website, but the confusion/differences in rated power may be coming from the fact that Crystal released a CMPx2 later that, iirc, was rated for a bit more power than the original CMP's.
If anyone here remembers when the CMP was a current model, that was back in the day when everyone was comparing the Alumapro Alchemy versus SoundStream Exact versus Crystal CMP in the 'which is the best SQ sub available' threads. The PPI Pro was also a big contender in the SQ discussions. That was also when the Stroker was considered the top dog SPL driver, and the GZ Nuke was the all around favored ground pounder sub. Was also when the W7 and IDMax were rumored to be on the horizon. Those 7 or 8 subs pretty much dominated the subwoofer section of every car audio forum. Good times.

Thanks for that stroll. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[dookie-face 10+ year member]

Sorry to revive an old thread, but need to see the basket. If it's a 4 spoke basket, it's a CMP, rated at 600 watts. If it's the more current 12 spoke basket it's rated at 1000 watts. The CMPx2 & COMPx2 subwoofers were dual voice coil with double stack magnets.

I have a car stereo review magazine in the garage where one article states the CMP was the loudest subwoofer in the world and then another article where the Audiomobile MASS top it, making IT the loudest.

 

[The_Grimy_One 10+ year member]

Sorry to revive an old thread, but need to see the basket. If it's a 4 spoke basket, it's a CMP, rated at 600 watts. If it's the more current 12 spoke basket it's rated at 1000 watts. The CMPx2 & COMPx2 subwoofers were dual voice coil with double stack magnets.
I have a car stereo review magazine in the garage where one article states the CMP was the loudest subwoofer in the world and then another article where the Audiomobile MASS top it, making IT the loudest.

He already said they are single voice coil...

 

[serjr711. 10+ year member]

I got 3 comp 10's single 4 ohm,rated @600wrms. They are 12 spoke baskets. Getting ready to recone all 3 and make them d2's with 4 layer al coils.

 

[audioholic 5,000+ posts]

Sorry to revive an old thread, but need to see the basket. If it's a 4 spoke basket, it's a CMP, rated at 600 watts. If it's the more current 12 spoke basket it's rated at 1000 watts. The CMPx2 & COMPx2 subwoofers were dual voice coil with double stack magnets.

The CMPx2 said "CMPx2" on the dustcap, which is the easiest way to see that those are not the x2 model.

 

[dookie-face 10+ year member]

There are two generations of CMP subwoofers. If it's named CMP and/or CMPx2 it has a 4 spoke basket with 600 watt rating (for the CMP 12). The COMP and/or COMPx2 is a newer version with a 12 spoke basket that has higher power handling.

CMP/CMPx2 - 4 spoke basket - older, lower power handling

COMP/COMPx2 - 12 spoke basket - newer, higher power handling