Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > maXimum Tech > Audio/Sound
User Name

Welcome to!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Thread Tools Rate Thread Display Modes
Old 09-30-2008, 03:40 PM   #1
6th Gear Member
Join Date: Jan 2008
Location: Toronto
Posts: 1,242
sound system question on Sub woofers

Ok maxbimmer,

hopefully i can get alot of people to chime in.

i recently purchased 2 kicker CVR 12's a BOSS 1600Watt 2 channle amp

and a ALpine CDA 9884 head unit.

now the install shop i went to in st catharines told me.

"that my system is 2 powerful for the box and 9/10 times my subs will blow"

my freind told me before i bought the system that the box was garbage and i would need something better..

basically i just dont want my subs to blow.

now my question is this guy just trying to get me into buying a 250 dollar custom made sub box. or will i be able to bring out some bass power with out blowing these subs???

thanks in ahead of time max bimmer
Attached Images
File Type: jpg 43_1.jpg (16.4 KB, 150 views)
ericdalinda is offline   Reply With Quote
Old 10-01-2008, 11:56 AM   #2
op sucks cock
Join Date: Jun 2004
Location: T.
Posts: 17,928
Send a message via MSN to propr'one
Those subs are dual 2ohm, which means total impedence on each sub is 4ohm. Your amp only makes 300WRMS at 4ohm per channel, which is well below the indicated limit of 400.

Your subs might still blow, but it wont be because of too much wattage.
I run a canadian led kit & hid kit company, if you have any questions about led headlights or hid kits in canada or would like to check out our products please contact me here:

2002 TiAg M3 6mt deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 220M 19's, Michelin Supersports
2006 YZF-R6, bunch of go-fast stuff
propr'one is offline   Reply With Quote
Old 10-01-2008, 12:38 PM   #3
Boots R
Boots, not boost
Boots R's Avatar
Join Date: Jun 2006
Location: Brampton
Posts: 10,958
wtf $250?

If you don't care how it looks, go buy 3/4" MDF board and make your own box
Boots R is offline   Reply With Quote
Old 10-01-2008, 12:56 PM   #4
6th Gear Member
Join Date: Apr 2002
Location: Wooda-bridga
Posts: 2,366
Well, each sub is dual 2 ohm........... which also means they could be wired for a 4 ohms each............ and then series for an 8 ohm load.............. that amps puts out 1600 watts into a 4 ohm mono load............ hazarding a guess that it's like about 800 watts for an 8 ohm load. Each sub takes 400 watts........... you should be ok if my brain is working right on this !! So all this stuff should work that you have.

BTW, unless the box construction is absolute garbage and held together by pins and needles.............. and build with crappy wood, then the box is likely not going to let go. The subs on the other hand could go depending on how they are wired.

The box looks like a bandpass design....... which means it's limited to a specific frequency range (say 20hz to 100 hz for example..... it will not play outside that range)........... not a big fan of these boxes although some subwoofers do really well with this design.

You can keep the box and subs........... I think your best bet is to return that amp and ............ A. buy something of better quality then BOSS and ...... B. if you decide to do that, then get something that does well with a 2 ohm mono load of about 800 watts (assuming the poster above was right about the subs being 400 watts RMS each). Bridge each sub voice coil in parallel to have them do 1 ohm mono each and then put the subs in series for an overall 2 ohm mono load.

Either way.......... you should be able to make something work out of it.

Current : 2013 Mini Countryman JCW, 2007 Z4M Roadster

Past: '88 E30 M3, '69 BMW 2002 Ti, 2000 328i, Audi A6 TT, BMW X5 3.0i , Audi A4, Mini Cooper Clubman S 1.8T

Last edited by tominizer; 10-01-2008 at 01:01 PM.
tominizer is offline   Reply With Quote
Old 10-01-2008, 01:03 PM   #5
Your opinion is to long
Blades's Avatar
Join Date: Feb 2005
Location: Mississauga
Posts: 5,365
I've been doing systems since I was 16 (all thou I stopped about 2 years ago) and I never heard of a speaker blowing because of the box. BUT the box does make a significant difference in the sound and quality of sound it produces
-=[ BL/\DES ]=-

All it takes is one bad day to reduce the sanest man alive to lunacy. Thats how far the world is from where i am. just one bad day. - Unknown
Blades is offline   Reply With Quote
Old 10-01-2008, 08:28 PM   #6
6th Gear Member
Join Date: Jan 2008
Location: Toronto
Posts: 1,242
thanx everyone for the quick reply. i havnt really got into sound but im learning more each day. i bought this package on ebay with that shitty box the Boss amp (was supposed to send a legacy amp). so far im very pleased with this system.
its alot of improvment from the stock system. (Mk2 Jetta) i couldnt even hear the beggining of "stairway to heaven" on the highway. needed to be fixed.

thanx again maxbimmer
ericdalinda is offline   Reply With Quote
Old 10-04-2008, 10:21 AM   #7
1st Gear Newbie
Join Date: Oct 2008
Location: brampton
Posts: 3
250 bucks eh, you either got a sick deal or you got ripped off...badly
max_sunfire is offline   Reply With Quote
Old 10-29-2008, 10:39 PM   #8
Mickey Knox
3rd Gear Member
Join Date: Jun 2007
Location: Boston
Posts: 507
just chiming in

just wanted to post up my setup because i really like it and it sound phenomenal. this system can make your eyeballs vibrate if you wish.

this amp (Boston accoustic GT-24)

driving a pair of these (Boston accoustic G5 - Wired parallel for 2Ohm Single channel)

sitting in this box (rear deck dual 10 inch enclosure)

4 channel amp (Boston accoustic GT-42)

driving this set of speakers (raindbow audio) in the rear deck, the kick panel and the door tweeter, not using the mid range for the door, they are junk/uselees anyways.

I am using this headunit (JVC KDX-5000)

The Pros on the headunit
- I like the navi system ( antenna can be attached above the third brake lightand wired through the trunk nicely). some reviewers want more gadgets but i like the way it is simple and get the job done. It even shows you the distance to the next turn and the direction while looking at the AV screen. the navi data sits on the internal harddrive and uses 16 of the 40 gig. maps are all north american and canada. with 16 Mio POI, which is nice when you are hungry or need fuel.

- i dont watch dvds on it so i cant comment on that.

- Media Server. This is the reason i bought the unit. I wanted to dump all my mp3s on the harddrive and be done with cd's. for one, this is my first upper class car audio system and now i can tell the difference in sound between a proper cd and a mp3, worlds apart. number two, and this is the worst part, even though it read dvds and runs on some kind of windows, they couldnt just implement a simple ID3 tag based system where you can just put a flat archive on the harddisc and then display the selection by the usual artist, title, album etc. you have to copy everything album by album. At least it takes the folder and file names and lables stuff correctly, but it takes about 3-5 minutes per mp3 album, and you HAVE to use genres. under which you sort your albums. i had the unit now about 8 weeks and its still not even half full, and stuff is just all over the place, its a mess. This would be the main reason i would not recommend the unit, unless you are looking for a navi system that will leave you with a HVAC control and is not dnaglinh from your windshield like a monkey, and you dont care about the media server.

It does also play audio DVD which sounds very high quality.
Mickey Knox is offline   Reply With Quote
Old 10-30-2008, 04:45 PM   #9
Join Date: Feb 2002
Location: Stance
Posts: 13,107
Just for future reference, CVR's come in both dual 2 and dual 4 ohm. Could be either.
Mystikal is offline   Reply With Quote

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -4. The time now is 02:40 PM.

Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Maxbimmer Copyright 2001 - 2018