Question about JBL Northridge E 250P Subwoofer

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How to repair jbl norhridge E series subwoofer

Sub gets switched on but no output even after increasing the sub vol. is ther any problem on circuit board

Posted by Anonymous on

  • Anonymous Jun 16, 2017

    My E250p sub worked great for 2 years but I always had the tube on the bottom falling out every time I used it. So I glued it in and it seemed fine, but now when I turn it on there an extremely loud deep base sound just for a second and air shoots out the bottom tube. No matter how many times I shut it off and turn it on it goes BOOM! It also sounds like there's a rattleling sound when I use it. All the screws are tightened so I am confused. Please help.

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5 Suggested Answers

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Posted on Jan 02, 2017

  • 29 Answers

SOURCE: i got a jbl sub

Have you checked the Impedence of the old speaker. If you can measure to below 8ohms you need not replace the speaker. Check with proper LFe signal at input of your amp. Also check for power indications before going further.

Posted on Dec 16, 2010

idrvnsx2
  • 60 Answers

SOURCE: need a replacement amp circuit board for a jbl

The boards can be repaired - look for we repair and your model number on ebay -

Posted on Nov 03, 2011

idrvnsx2
  • 60 Answers

SOURCE: One of my circuit boards is blown (104 sub 15000

You can purchase repair on ebay - look for the auction under JBL VENUE SUB10

Posted on Nov 11, 2011

idrvnsx2
  • 60 Answers

SOURCE: how and where can I

There is a guy on Ebay who repairs these - not sure but I don't think the board is available - you could check with Harmon - they own Infinity and JBL

Posted on Nov 11, 2011

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1 Answer

How and where can I get a circuit board for jbl venue sub 10


There is a guy on Ebay who repairs these - not sure but I don't think the board is available - you could check with Harmon - they own Infinity and JBL

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The boards can be repaired - look for we repair and your model number on ebay -

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The volume control pot can be replaced.

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Hello sharky75,

That 1600 watt peak power figure for your subwoofer can't tell you what amp you need. You need to know the maximum RMS power the sub can handle. And you need to know the impedance (ohms) of the voice coil(s). JBL GT5 series subs have an RMS rating of 275 watts. The GTO series handles 300 watts. The Power series handles 400 watts. The GTi series handles 700 watts. Some are single voice coil, so the impedance is fixed. Others are dual voice coil allowing you to wire them for different impedance loads.

For maximum performance your amp should be able to provide at or near the same number of watts RMS into the lowest impedance at which the sub can be configured. For example, if your sub is the Power Series Model number P1224, it has dual 4ohm voice coils and can be wired to present either a 2ohm load (parallel) or an 8ohm load (series). You want to wire the voice coils in parallel for the 2ohm load and select an amp that outputs up to 400 watts RMS into 2ohms. The Orion Cobalt CO8001 is just such an amp. If you have one of the GTi Series subs, a better amp would be the JVC Arsenal KS-AR75 which outputs 700 watts into 2ohms.

Hope this helps.

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My sub has no power, ther could even be other problems i'm not aware of. so i would like to fix power first


Hiya, start by checking the power cable, then check the fuse in the unit on the pcb. If blown, replace and if it blows again then problem could be either Power supply or the amp outputs. If it doesnt blow, stays on but no sound, problem also likely to be output stage. You will need someone with experience to check outputs, etc and a meter though. Hope that helps a bit.
Best of luck

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Even Distribution


i have same speakers try these setting and tell me what you think put phase at 180 and put switch on lfe mode not normal for some reason my sub plays louder on these setting verse phase on 0 and lfe switch on normal i have power on subwoofer a little more than half also set croosover to 80hz you will never touch it again

Dec 05, 2008 | JBL Northridge E 250P Subwoofer

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The power switch came off of my subwoofer.


Same thing happened with me. Did you ever find a solution?

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1 Answer

Jbl sub woofer


Has nothing to do with the signal or source - it is a failure of the turn on circuit - I repair this amp - can help if you find my add here or I am located on ebay as well. Juust do a search for We Repair JBL and find the model :)

Sep 03, 2008 | JBL Northridge E 250P Subwoofer

1 Answer

Subwoofer not powering enough (Sounds like under powered 8inch)


get a nice monster subwoofer cable and a Subwoofer PowerCenterâ„¢ SW 200 with Clean Powerâ„¢ Stage 1 get it from like amazon and you'll definately see a difference and also put the sub in like a corner

Jun 08, 2008 | JBL S120PII Subwoofer

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