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two Diamond Audio M6 MARKII subs

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Lizardking 
Copper - Posts: 184
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Joined: August 23, 2004
Posted: September 23, 2004 at 9:41 PM / IP Logged  

Had a custom box built (downfiring) with two Diamond Audio M6 MARKII subs.. It sounded like @#$!  When we held the box upright it toward the front of my truck it sounded alot better.. When it was downfiring it sounded like it was bottoming out when we increased the volume. Is this sub any good for downfiring?

94legend 
Silver - Posts: 237
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Joined: June 27, 2004
Location: United States
Posted: September 23, 2004 at 10:11 PM / IP Logged  
I'm lost, not sure what you are talking about, Anyone help us out. Downfiring? lol sorry!
Francious70 
Silver - Posts: 629
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Joined: July 26, 2004
Location: United States
Posted: September 23, 2004 at 10:17 PM / IP Logged  
Downfiring is somthing used in home audio, but I've never heard of it being done in car audio. Why not just have them facing normal??
Paul
Velocity Motors 
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Joined: March 08, 2002
Location: Manitoba, Canada
Posted: September 23, 2004 at 10:17 PM / IP Logged  
What's the box made of ? What's the amp powering it ? How do you have the subs hooked up ? We need this information for other's to help you out.
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Lizardking 
Copper - Posts: 184
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Joined: August 23, 2004
Posted: September 23, 2004 at 10:20 PM / IP Logged  
The box is made of 3/4' MDF and the amp powering it is a US Acoustics 1000D (1250watts RMS @ 1ohm load 12.9volts) We have subs hooked in parallel.
stevdart 
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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: September 23, 2004 at 10:48 PM / IP Logged  

Lizardking wrote:
Is this sub any good for downfiring?

Looks like you answered your own question.  Without changing anything else, you turned the box toward the front and the problems stopped.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Lizardking 
Copper - Posts: 184
Copper spacespace
Joined: August 23, 2004
Posted: September 23, 2004 at 11:06 PM / IP Logged  
It's not that it stopped it sounded better but not like it should...
customsuburb 
Gold - Posts: 1,813
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Joined: January 17, 2004
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Posted: September 24, 2004 at 4:06 PM / IP Logged  
How are your gains set?
Lizardking 
Copper - Posts: 184
Copper spacespace
Joined: August 23, 2004
Posted: September 24, 2004 at 11:15 PM / IP Logged  
We had gains set very low because as we increased the gain it got worse.

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