Why does the sub sound like sh*t?
Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=6010
Printed Date: May 16, 2024 at 1:39 AM
Topic: Why does the sub sound like sh*t?
Posted By: hishameen
Subject: Why does the sub sound like sh*t?
Date Posted: November 28, 2002 at 6:30 PM
Hey, I dont know much about car audio, but I have an Audiobahn 10" 1000 Watts RMS & an audiobahn 1000 Watt RMS amp. I just droped them into the trunk of my Prelude but they sound like sh*t. I hooked the amp up to a REAL sh*tTY 12" Crankinstien that a buddy had & it POUNDED real loud... sounded alright to. But the audiobahn hardly makes a noise... I thought that maybe the box was to big. It's about 4 feet wide, 1.5 feet deep & 1.5 high. HELP ME!!!!
Replies:
Posted By: cgav8r
Date Posted: November 28, 2002 at 7:35 PM
maybe the sub is blown, or if it is a dvc, it could be wired out of phase with it self.
Posted By: Velocity Motors
Date Posted: November 28, 2002 at 7:49 PM
cgav8r right.... check the wiring to ensure that the sub is wired properly for the amp being used. ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: hishameen
Date Posted: November 28, 2002 at 8:05 PM
how do I check wether it's wired properly or not?
Posted By: hishameen
Date Posted: November 28, 2002 at 8:06 PM
& thereis no way that the box is to big right?
Posted By: Velocity Motors
Date Posted: November 28, 2002 at 8:49 PM
 This is a set up of a single DVC sub..... did you wire it up like this ?
As well, did you fabricate the box for the sub or was it a premadebox for another sub ? ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: hishameen
Date Posted: November 28, 2002 at 8:57 PM
The box is just 6 slabs of wood sealed together in a rectangular shape. I couldn't buy a premade box as the sub is to deep to fit in any boxes I could find. I was reading up on the Audiobahn website & it says thier that the more power your putting into the sub the smaller the box should be, is this true? Also, it is wired properly, i wired it incorrectly at first & it didnt make any sound, the amp kept going into protection mode so I wired it correctly. Hoever, it still doesnt make as much noise as it should. I've heard one of these before & it sounded great, this doesn't. Could the quality of the wiring from the amp tot he sub be such a large factor, or is it the box?
Posted By: Velocity Motors
Date Posted: November 29, 2002 at 5:07 AM
It's probably the dimensions of the box that are not right for the sub. If the enclosure is too large the sub will not produce very clear bass. If the enclosure is too small the bass will be very tight and short in frequency notes ( will sound like an 8" sub ).
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: hishameen
Date Posted: December 01, 2002 at 5:38 PM
How would I find the proper dimentions for the sub?
Posted By: Vega1210
Date Posted: December 02, 2002 at 7:20 PM
depending on how its wired. If its wired like in the post above in the picture the resistance/ohm value could be the problem. A dual 4ohm sub wired like in the picture would read 8ohms to the amp and wouldn’t get half the power that your “friends” sub was getting. It could also be wired up so the amp sees a 2ohm load. Not sure if the amp you have is stable running at 2ohms bridged. Look in your specs sheet that you got with your amp. Might want to take a volt ohm meter and check out your resistance of the subs the way you have it wired up.
Posted By: hishameen
Date Posted: December 02, 2002 at 7:23 PM
The amp manual says it can run at 2 ohm no problem.
Posted By: bberman1
Date Posted: December 02, 2002 at 7:41 PM
You have it in the wrong size enclosure let us know your model number and I will tell you the correct volume for your enclosure. Each sub has its own set of parameters which are used to calculate the size of the enclosure.
Posted By: hishameen
Date Posted: December 02, 2002 at 8:10 PM
The model number off my sub is Audiobahn AW1008X - these are the specs for the sub ( | | 200 oz of Precision Engineered Multi-stacked Magnets Power Handling: 1000watts R.M.S. Frequency Response: 20Hz – 500Hz Efficiency: 87dB Bolt Tight Motor Structure PHAT 2 Inch Foam Surround Laminated Glass Fiber Composite/Pulp Cone 3 Inch 4-Layer AVS Voice Coil Dual 1 Ohm Voice Coils 1/2 Ohm or 2 Ohm Operation Mounting Dimensions: Depth; 6 Inch Hole; 9 1/4 Inch Diameter; 10 7/8 Inch |
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Posted By: AW1208Q
Date Posted: December 03, 2002 at 9:22 AM
box needs to be 1.6cubic feet. also for that sub it needs to be ported. Audiobahn does not suggest using a sealed box for the 08 series subs. for more info on the box specs go to: https://www.audiobahninc.com/tech/Audiobahn2002boxspecs.pdf
Posted By: bberman1
Date Posted: December 03, 2002 at 10:18 AM
Your sub needs to be in a ported 1.9 cu/ft box with (1)4x11.5 port. Or 1 cu/ft sealed I have some AW1208Q’s in 1 cu/ft per chamber sealed and they sound pretty clean and hit very hard. Is your enclosure ported or sealed? Was the enclosure designed specifically for your sub? Also if you call Audiobahns tech support they will work with you to ensure you get the proper sound.
Posted By: hishameen
Date Posted: December 03, 2002 at 6:13 PM
Sweet, thanx allot. Really appreciate it. Looks like I'll have to wait a bit before I stick in the car. I have 2 of those 10's & an audiobahn 12 too & I was planning to throw that 10 in for now but I think I'll just wait until I get everything together for a FULL install...
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