Question about Sunfire True Subwoofer Mark IV Subwoofer

Open Question

Auto on sensitivity low and early timeout to standby mode.

I have to turn volume up to uncomfortable levels to get the sub to trigger on. It will then timeout prematurely when bass content is anything but monstrous. Is there a way to jumper something on the circuit board to overide the auto-on/timer circuit so I can manually turn the sub on and off with a power strip? Sunfire won't give me access to schematics or any technical advice.

Posted by on

  • pjnanook Apr 14, 2009

    I really need to disable the auto on. The thing I am currently trying is to up the sub output on my receiver and turn the output down on the sub itself. Not sure if it will work long term. Also, I did not have this problem before building my home theater and putting the wire in the wall.

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My wireless subwoofer keep cutting off and coming back on when the music or movie is playing


Some/most Sub Woofers have a Switch that turns them Off/On/ or Auto. On Auto, the Sub only turns on when there is a signal present. ( sound coming into the Sub ) When there is no signal, the sub goes into standby mode. Wireless subs may be made to be in standby mode as the default.

Dec 21, 2014 | Audio Players & Recorders

1 Answer

My subwoofer will not wake up, regardless of whether I flip the switch from Auto to On or not. Suggestions?


The sub settings for testing should be: Crossover frequency - Max; Volume - Mid; Phase - Normal.

As a quick test, unplug the sub cab from the amplifier/receiver end. Switch on the sub and turn the volume down all the way. Briefly put your finger across to short the RCA/phono tip and ring. The sub should make a buzzing sound. You now know that the sub is working and the cable appears to be okay or not.

If you've got power then that's a good thing. It could be something simple as a broken solder joint or bulging capacitor.

Aug 05, 2014 | Harman Kardon HKTS 14 System

1 Answer

Dpx-u5120 dosent show subwoofer option in function mode , how to fix it ?


I manage to slove to my DPX-U5120 Subwoofer level adjustment. In STANDBY mode, Press the Main Volume button and turn to Setting, turn until you find the SW Preout, Swith to normal mode, its won't work if u switch to REAR

Go back to CD/USB Mode, Then Press the Main Volume and find Audio Adjustment and now u can find the Subwoofer Level , Sub Phrase and Sub LPF adjustment.. Um Glad i found this and Happy Setting

Mar 22, 2012 | Car Audio & Video

1 Answer

I've got a vsx-920-k Pioneer receiver with s-11 Pioneer speakers and a s-21w Pioneer subwoofer. All of a sudden my sub stopped working and it seems like it's stuck in standby mode (blue light...


The manual is here...

http://www.pioneerprodj.eu/eur/products/42/99/S-21W/media.html

Flashing Blue is not defined in the manual.

Have you tried changing the Auto Standby switch to ON?

You can prove if the sub amp will respond to a known good input by TURNING ITS VOLUME DOWN tp start and just feeding it ANY RCA output from the receiver while playing, say, FM (to keep it simple). That way you would known in which direction the problem actually lies (internal or external).

Jul 05, 2011 | Pioneer VSX-C300 Receiver

1 Answer

Amp goes into protection mode when i turn up volume


Sounds like you are running your subs at to low of ohm. Amps are rated differently on the levels of ohms or resistance that they can get to. If you have a dual 4ohm sub and run it in pairrell it will drop to 2ohm and if you run the same sub in series it will be 8ohm. Your amp will go into protection if the ohm is to low.

-david

Nov 07, 2010 | Jl Audio 12W6 Car Subwoofer

1 Answer

I can't get the subwoofer off of standby mode. It's Onkyo HT_S5100. I have tried to alter the sensitivity level as described in the manual and it hasn't helped.


I have the same problem. I saw on another forum that you can plug the sub cable into the "tape out" and it works. It did work for me but now the volume control doesn't control the sub along with the other 5 speakers. Not sure what else to do...

Oct 05, 2010 | Onkyo HT-S5100 Theater System

1 Answer

Velodyne impact mini going into standby and stays that way? I changed cable but it makes no difference. I had to switch my amp off and back on to get the green light. Can you help? Tks


Here is something to try.

On your signal source, check the owners manual for adjusting out put levels. If it has one for the sub try turning this level up.

Then adjust sub woofer volume on the unit to mach your system volume.

Oct 13, 2009 | Velodyne Audio Players & Recorders

2 Answers

Subwoofer goes to sleep


The receiver automatic speaker set-up set the sub volume at -12 and since it was not getting any signals from the receiver it was doing what it is supposed to be doing (going to the standby mode). This was troubleshooted by Onkyo tech support on a Sunday. All the best about Onkyo customer support.

Apr 12, 2008 | Audio Players & Recorders

1 Answer

BOOM SOUND AT AUDIO MODE CHANGE


Suggest turning the volume down on the Receiver/Amp before changing modes. Changing modes can produce signals that can hurt speakers if driving at mid-high levels.

Regarding the sub, turn off the receiver first, then turn off the sub. When turning everything on, turn on the sub first, then the receiver. If you still hear the noice in the sub, turn down the volume in the sub before turning it off (making note of what volume level you prefer for it when it is on).

Oct 26, 2007 | Denon AVR-2500 Receiver

4 Answers

500/1 turns on and off at high volumes


Make sure that you are using the right Guage wire for that installation. I had the same problem with another amp. I changed both, power & ground wires to 4 Guage and it worked fine after that. maybe that would work for you.

Sep 27, 2006 | Jl Audio 500/1 Car Audio Amplifier

Not finding what you are looking for?
Sunfire True Subwoofer Mark IV Subwoofer Logo

Related Topics:

380 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sunfire Audio Players & Recorders Experts

shaun taylor

Level 3 Expert

1450 Answers

woodzowl307

Level 3 Expert

628 Answers

Joseph Hoffmann

Level 3 Expert

1700 Answers

Are you a Sunfire Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...