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bass bottoms out, boat system


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jixxxer 
Member - Posts: 4
Member spacespace
Joined: July 10, 2006
Location: United States
Posted: July 10, 2006 at 7:38 PM / IP Logged  

I have a kicker 12" comp sub (older version) specs say  4 or 8 ohm, (watts peak / rms) = 300 / 150, equivalent volume = 4.50 ft3, net displacement = 104.9 in3.

I have that hooked to a power acoustik ps2-520 (2ohm stable)specs are:

2 channel, 4ohm=125x2, 2ohm=150x21ohm=300 max 520. This is in my boat. Its in a box that has about 1.8 cu. ft. of air space. Problem is when i turn it up and hit some low bass it bottoms out. Just wondering what the problem is with that. Other than that it sounds good.

Thanks.!

coppellstereo 
Silver - Posts: 785
Silver spacespace
Joined: November 21, 2005
Location: United States
Posted: July 10, 2006 at 7:41 PM / IP Logged  
you could turn your gain down.
is it a single voice coil woofer?
zerepdivad 
Silver - Posts: 605
Silver spaceThis member has made a donation to the12volt.com. Click here for more info.spacespace
Joined: July 03, 2006
Location: Wisconsin, United States
Posted: July 10, 2006 at 7:52 PM / IP Logged  
yeah it might be clipping..... where's your gain set?
aznboi3644 
Gold - Posts: 2,600
Gold spaceThis member consistently provides reliable informationspace
Joined: May 01, 2006
Location: United States
Posted: July 10, 2006 at 8:03 PM / IP Logged  
Is the box size within the recommended volumes. Too box of boxes can cause woofers to bottom out.
coppellstereo 
Silver - Posts: 785
Silver spacespace
Joined: November 21, 2005
Location: United States
Posted: July 10, 2006 at 9:01 PM / IP Logged  
how old is the sub? May be a suspension problem
jixxxer 
Member - Posts: 4
Member spacespace
Joined: July 10, 2006
Location: United States
Posted: July 10, 2006 at 9:52 PM / IP Logged  

i believe it is a single voice coil, not absolutely sure though. My gain is about 3/4 up. I also have a subwoofer controller on the head unit. If i am reading the spec off kicker correctly it says volumes is 4.5 ft3. The box i have now has maybe 1-1.5 ft3. Im not sure how old it is, its round, with the K on it and it has a big 25 on top for 25th anniversary. Hope this helps.

Thanks!

aznboi3644 
Gold - Posts: 2,600
Gold spaceThis member consistently provides reliable informationspace
Joined: May 01, 2006
Location: United States
Posted: July 10, 2006 at 10:28 PM / IP Logged  
Sealed or vented?? Have you taken it out and tried looking up the model number?
jixxxer 
Member - Posts: 4
Member spacespace
Joined: July 10, 2006
Location: United States
Posted: July 11, 2006 at 5:38 AM / IP Logged  
the box is sealed. I will try and take it today.

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