the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

mono amp and 2 4-ohm DVC subs


Post ReplyPost New Topic
< Prev Topic Next Topic >
jesusfreak98 
Member - Posts: 6
Member spacespace
Joined: May 02, 2004
Posted: May 02, 2004 at 2:59 PM / IP Logged  

Watch out - another newbie on board . . .

I am learning more about car audio - unfortunately I'm learning these things AFTER buying equipment.  This is what I have sitting is my living room:

Alpine MRP-M350 700 W mono amp (350W RMS @ 2-ohm)

2 Audiobahn 8" 4-ohm DVC subs (200W RMS)

Now that I understand how the DVC works, it looks like this isn't a very good setup.  So I need to sell something and replace it with either a) a more powerful amp, which will push the subs at 4-ohm impedence (not the best option?) or b) get two 2-ohm DVC subs or two 4-ohm SVC subs (200W RMS)

What do the experts recommend?  I'm not looking to wake the neighbors or break the bank, just looking to improve SQ.

forbidden 
Platinum - Posts: 5,352
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: November 01, 2003
Location: Alberta, Canada
Posted: May 02, 2004 at 3:34 PM / IP Logged  

Find out if you can return either the amp or the subs in exchange for something different. If you can then we can go about recommending a proper match of equipment to the other.

Top Secret, I can tell you but then my wife will kill me.
stevdart 
Platinum - Posts: 5,816
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member consistently provides reliable informationspace
Joined: January 24, 2004
Location: Pennsylvania, United States
Posted: May 02, 2004 at 3:37 PM / IP Logged  

A lot of people (including myself) have collected components for a system that didn't turn out to be the best match.  Don't feel bad.  But you are going the right way by asking about it here.  From what you have, sell the Audiobahns.  They may not be suitable for a SQ setup anyway.  Who knows, maybe it was Divine Intervention that made you buy them as DVC's!

While you're putting your Ebay-sell thing together, look through these posts for suggestions on SQ subs.  You'll find a bunch.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
jesusfreak98 
Member - Posts: 6
Member spacespace
Joined: May 02, 2004
Posted: May 02, 2004 at 4:34 PM / IP Logged  
So this amp is probably OK, but I need some different subs.  Any recommendations - they must be 8".  Any advantage of 2-ohm DVC vs. 4-ohm SVC?
customsuburb 
Gold - Posts: 1,813
Gold spacespace
Joined: January 17, 2004
Location: United States
Posted: May 02, 2004 at 5:46 PM / IP Logged  
Memphis, JL audio, and Rockford Fosgate just to name a few make some good 8" subs. Have you looked at buying one 10" sub instead maybe?
DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: May 02, 2004 at 6:09 PM / IP Logged  
Yea, that was my question as well... why must they be 8" subs?  What kind of enclosure do you plan to use?
Support the12volt.com
jesusfreak98 
Member - Posts: 6
Member spacespace
Joined: May 02, 2004
Posted: May 02, 2004 at 6:29 PM / IP Logged  

I have a convertible Z28, and I'm putting a custom-made box between the back seat and the trunk, just behind where the top fold down.  The box is made to hold two 8s.  Here is more info:

http://members.aol.com/jbslim/Johnn...ge/JohnnyB2.htm

What if I just get another amp to run at a 4-ohm load?  Anyone have anything to say about Profile amps?

DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: May 02, 2004 at 6:35 PM / IP Logged  

Choose subs to match the size of your enclosure if the enclosure cannot be built for the subs.  What's the interior cuft of your "box"?

The Alpine amp will run all day and be very happy at 4 ohms total load.  It will out-class those Audiobahns by a long shot.  Don't waste your money on anything with "Profile" written on it.

Support the12volt.com
jesusfreak98 
Member - Posts: 6
Member spacespace
Joined: May 02, 2004
Posted: May 02, 2004 at 6:54 PM / IP Logged  

This amp is rated at 200W RMS @ 4 ohms, so that's 100W per sub.  Are you sure that is sufficient for these subs (again, 200W RMS).  I figured I needed an amp pushing around 300-350W RMS @ 4 ohm for these.

As far as the box, the paperwork says th e box volume for each sub is 0.18 cu-ft and the port area is 10 sq-in.  This is where I'm incredibly ignorant!

DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: May 02, 2004 at 7:01 PM / IP Logged  
Those subs will work fine with 200 WRMS for both of them, especially since the Alpine is rated lower than it will normally really operate.  Yes, the speakers advertise that can handle more, but it does not mean they HAVE to have more power.  Try it first and see - especially in a ported enclosure.  I'll bet it is 1.8 cuft and not 0.18 cuft.  If it IS 0.18, then you have a problem as that is way too small for a ported enclosure.
Support the12volt.com
Page of 2

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Saturday, May 11, 2024 • Copyright © 1999-2024 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer