Question about JBL Northridge E 250P Subwoofer

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Even Distribution Powered sub link to another cabinet, the linked cabinet is fine, powered cabinet has major drop in output. Any thoughts?

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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

Posted on Aug 27, 2010

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1 Answer

Red light constantly lit, no sound


Would be surprised if this blew the sub of it was off at the time, have you tried the sub with another input source? Is it the clip light or the power light that's on?

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Sony CMT-GP5 subwoofer output very quiet


From the description the subwoofer is the problem, since the item is new return it to the place of purchase, this is a manufacture issue.

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When my sub is plugged in and i bring up the menu for the sub it displays a -- and no sound is coming of it. what do i do?


Is the sub you are using a powered sub? if not, that's the problem. the sub output is a line level signal.
Here's a link to the manual-see if that helps you.

http://usa.yamaha.com/products/audio-visual/av-receivers-amps/htr/htr-6130_black__u/?mode=model

good luck!

Sep 12, 2011 | Yamaha HTR-6130 Receiver

1 Answer

Major hummimng noise when sub is connected to receiver.


Is the hum in the receiver-attached speakers or the sub?


Self-powered sub?


How is the sub attached - RCA or speaker-level?


Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.


If it hums with the sub attached, unplug the sub's power cord. Differences in AC ground potentials will generate hum across linked devices.

Mar 25, 2011 | Yamaha RX-Z9 Receiver

1 Answer

I am trying to hook up a powered sub woofer to a yamaha rx-v461 and i dont know what cables go where on the back of the sub there are two speaker ports and there are two plug ins but each speaker port has...


Your subwoofer probably has both high-power inputs and "normal"low inputs. The first are for receivers, which don't have link-level output for sub, so they are able to take already amplified signal as input.
You need to use link-level input of your sub and connect it to subwoofer-output of your receiver. The output is marked as OUTPUT - Subwoofer and is black-color RCA plug (don't confuse with subwoofer INPUT under MULTI CH INPUT).
Receiver has only mono output for subwoofer. If your sub has stereo input (white/red RCA plugs), connect just the left channel to the receiver, it will still work.
Don't connect anything to the speaker output on the sub, you don't need that.

Sep 28, 2009 | Yamaha RX-V461 AV Receiver

1 Answer

Powered Or Unpowered Subwoofers For Onkyo TX-8511


Greg- Powered subs are better than non-powered subs (also known as passive subs), anyway I see the TX-8511 has no sub pre-out on the back panel, so you need to decide what sub you will use and run from the receivers left and right speakers output into a subwoofers speaker in from speakers then back out to speakers, look at the back of a subwoofer and you will see like 4 sets of speaker hookups 2 in and 2 out, what this does is takes the low end or bass and drops the signal to the subwoofer then takes the mids and highs out to your left and right speakers, unless your regular left and right stereo speakers have large woofers a sub is the way to go.

Jan 28, 2009 | Onkyo TX-8511 Receiver

2 Answers

SA-AX720 no subwoofer signal?


THIS UNIT HAS NO SUB WOOFER AMP IN IT. THE ONLY WAY TO OVER COME THIS IS TO HOOK THE LEFT AND RIGHT FRONT SPEAKERS STRAIGHT TO THE SUB WOOFER AND THEN GO FROM THE SUB WOOFER BACK TO THE INPUTS ON THE BACK OF THE UNIT FOR THE FRONT SPEAKERS. THE SUB WOOFER THIS WAY WILL EXTRACT THE BASS AND THE FRONT WILL RECEIVE THEIR PART. THIS SOUNDS CRAZY AS HELL I KNOW BUT THAT'S HOW I GOT MINE TO WORK. THE OUTPUT FOR THE SUBWOOFER IS USELESS AND PUT THERE FOR YOU TO HOOK UP AN AMP FOR A SUB WOOFER. EVERYTHING HAS SHORT COMINGS, AND THAT'S THE ONE FOR THE AX-720.

Sep 22, 2008 | Technics SA-AX720 Receiver

1 Answer

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


get a nice monster subwoofer cable and a Subwoofer PowerCenter™ SW 200 with Clean Power™ 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

2 Answers

Major buzz/Humming sound coming from my subwoofer


Well there are only a few reasons i can think of that just might be the reason behind said buzzing.

1. It may be connected to another power source ( amplified or powered supply ) or incorrectly connected. It may also be too close to said power supply.Try letting the dog (sub) out on his leash a little Drag out the manual that came with the sub, and check the correct procedure for your type of setup.
**People do read manuals still don't they ?**

2.The only other problem i have heard of is port noise in low registers. Keep the the port area clean, as it may suck up dirt, or even worse, small children!

3. However, if you're considering placing this subwoofer in a cabinet, I'd recommend allowing ample breathing room for the heat sink. This can also be done by drilling smaller holes in the cabinet ( 8-12 mm holes - with the owners permission of course) but please do remember to keep the port area clean.

4. The product ie: Velodyne DPS-12 Subwoofer, came with a bad power supply, presuming it is new, check your warranty.
(not very likely - see also scenarios 1, 2 or 3.)

Velodyne has been making subs forever and do it well.


Jan 17, 2008 | Velodyne DPS-12 Subwoofer

5 Answers

Bose Acoustimass Subwoofer not working; front/center are working


Ok, have you tryed to unplug all of the wires from the sub, including the power wire from the wall. Install of the speaker wires to the sub, and plug back in the sub. Also what are the numbers on the speakers and the sub.

Jun 10, 2007 | Onkyo TX-SV525 Receiver

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