Top 20 JBL S120PII Subwoofer Questions & Answers

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How to set up to stereo ?

Generally there is a left and right input. The sub is usually not in stereo, the frequences of the sub are more omni directional, and have no spattal placement in the stereo field. If there is only (1) input you can take either the left or right from the system and you should get the frequencies you need. In the even it is not working out quite right you may take the left and right and use some 1k to 4.7k 1/2 watt resistors connected to tie the left and right line output togeather to feed the sub.
12/24/2010 5:41:10 PM • JBL S120PII... • 74 views • 0 helpful votes
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Wiwing question

its for the led light red and green red means in standby position and green means its on
11/12/2009 11:49:38 PM • JBL S120PII... • 186 views • 1 helpful votes
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2answers

The power switch came off of my subwoofer.

Same thing happened with me. Did you ever find a solution?
11/28/2008 9:52:34 PM • JBL S120PII... • 353 views • 0 helpful votes
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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
6/8/2008 6:17:17 PM • JBL S120PII... • 419 views • 0 helpful votes
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Jbl sub power dumb blonde needs help!

did any 1 get a solution for this problem???
4/12/2008 5:08:44 PM • JBL S120PII... • 253 views • 0 helpful votes
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Amp wont turn on

Sounds like a fuse issue in the power from the amp - the remote circuit could be and probably is completely independent. haven't been able to find confirmation on this, but if you are confident to take the cover off then check (probably)around the area where the power terminals are there may be some fuses. Hope this helps, ask again if not :)
3/14/2007 4:16:57 PM • JBL S120PII... • 669 views • 0 helpful votes
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Power acoustic amp help

probably you had cause the wire to ground out the set.causing the short out to damage the power supply take your set to a tech to check it.and possibly to repair.good luck.
4/13/2007 3:05:23 PM • JBL S120PII... • 127 views • 0 helpful votes
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5answers

Cant get 4000 watt lanzar amp turned on

it sounds like the posotie side of your amp is bad or the soder point is broken
3/3/2007 9:42:55 PM • JBL S120PII... • 232 views • 0 helpful votes
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JBL prx612m humming and cracking sound what can be the solution

The causes can be poor connection in the signal input lead, could be the mixer you use, could be a speaker failurs, could be an amplifier failure.
1/21/2024 10:15:40 AM • JBL Audio... • 40 views • 0 helpful votes
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My JBL PRX 512m humming and rattling is the problem with the amp side or pre amp.

Could be either or both. You will have to fault find to get an answer.
1/19/2024 8:42:31 PM • JBL Audio... • 21 views • 0 helpful votes
tip

Problem with your JBL BoomBox2 speaker (or similiar) ?

Just found this out, after crazy searching & brainstorming. So if your speaker suddenly goes silent or sound comes and goes, you can check this out: At least the JBL BoomBox seems to have this integrated in its architecture so there's nothing we can do about it, complain to JBL : ) But to the problem: if the SOURCE of music/sound is too low, then the speaker may go into a "sleep mode" - silent. So ensure always your SOURCE of sound, connected to the speaker, has volume at least 80% to avoid this problem. Hope this helps & no one needs to ditch and buy a new one ! : )
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How to open jbl on stage 200id?

To open the JBL On Stage 200iD, you need to follow these steps: Remove the power adapter from the back of the device. Turn the device over so that the bottom is facing up. Locate the six rubber pads on the bottom of the device and remove them using a plastic opening tool. Remove the six 1cm T-10 torx screws found under the rubber pads using a T-10 Torx screwdriver. Open the device along its seam. For more information, please refer to the JBL ON STAGE 200ID USER MANUAL. https://www.manualslib.com/manual/788652/Jbl-On-Stage-200id.html
10/27/2023 9:55:13 PM • JBL Audio... • 51 views • 0 helpful votes
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How do I fix a BLINKING light on the jbl 10..G2 input signal board that causes no signal to go thru

A blinking light on the JBL 10" G2 input signal board can indicate a problem with the input signal. Here are some steps you can take to try to resolve the issue:
  1. Check the input cables: Make sure the cables are securely connected and there's no damage to the cables or the input jacks. Try swapping out the cables with a known working set to see if that resolves the issue.
  2. Check the source: Make sure the source device (such as a mixer or computer) is working properly and is sending an output signal.
  3. Check the input settings: Make sure the input settings on the JBL 10" G2 are correct. Refer to the manual for information on the correct input settings.
  4. Power cycle the device: Turn off the JBL 10" G2 and unplug it from the power source. Wait a few minutes and then plug it back in and turn it on.
  5. Check for firmware updates: Make sure you have the latest firmware installed on the JBL 10" G2. Refer to the manual or the JBL website for information on firmware updates.
  6. Contact JBL customer support: If you're unable to resolve the issue with the above steps, contact JBL customer support for further assistance.
If the issue persists, it's possible that the input signal board on the JBL 10" G2 may need to be repaired or replaced. In this case, you may want to consider contacting JBL customer support for information on repair options.
2/1/2023 3:42:38 PM • JBL Audio... • 84 views • 0 helpful votes
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JBL PRX 625 Speaker. How can we fix the overheating in the speaker please?

Question edited for clarity. Undo the screws at the back and look for a cooling fan. There is something in the centre that looks like one. Or contact JBL direct and put in a warranty claim. The overheating issue seems well documented. Although you shouldn't have to, you could easily cut a vent hole with filter at the base and a 4" case fan above the amplifier to pull out the hot air. 3 x 500 watt inside is bound to create heat. https://www.google.com/search?q=jbl+prx+625+overheating+problem ..
1/13/2023 2:45:20 PM • JBL Audio... • 75 views • 0 helpful votes
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I have a JBL SUBWOOFER MODELPSW-1200 that hums as soon as it is plugged into the wall plug, there are no speaker wires connected to the subwoofer!

The hum might be caused by the main semi-conductor device that produces the sound. Of course a capacitor might look normal and still cause the problem. The only way is to replace the big ones in the unit.
11/13/2022 5:12:55 AM • JBL Audio... • 87 views • 0 helpful votes
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Can u connect JBL HEADPHONES TO TH-P42X20Z TV

yes but setting it up using wireless headphones would be easier. 3.5mm to RCA Stereo Audio Cable Adapter Amazon Basics 1-Male to 2-Female RCA Y-Adapter Splitter Cable - 12-Inches copy and paste https://www.manualslib.com/manual/700621/Panasonic-Viera-Th-P42u20z.html?page=11#manual ..
10/11/2022 12:20:05 AM • JBL Audio... • 75 views • 0 helpful votes
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May Jbl PRX 800 series limit light is on what can I do

amp shutting down
9/2/2022 9:45:07 AM • JBL Audio... • 197 views • 0 helpful votes
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