Question about Sunfire True Sub MK II Subwoofer

1 Answer

Sunfire MK II Hums on input signal. Hum can be canceled repeatedly by switching on or off lights in room. Problem is consistent. Sometimes a small electric shock can be felt at a light switch. Is this a grounding problem? How important is a proper ground?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 682 Answers

You must change light switch now with a new one-and grounding is very very important.

Posted on Mar 25, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Having a low level hum after it starts to be used, then shuts off after a small amount of time, between 5 and 30 minutes.


use a ground loop isolator from radio shack, the device is hooked up to the rca plugs in, the other side has, (of course rca plugs), outs. solved My problem of feedback in the sub and into the processor.....

Feb 09, 2011 | Sunfire True Sub MK II Subwoofer

1 Answer

Sunfire MK II Subwoofer hum. I have a Sunfire MK II subwoofer that hums when it is plugged in (it even hums when no signal is connected). I've tried multiple outlets on different circuits, but hum...


you have a ground loop issue you could purchase a ground loop isolator, jensen makes them for about 40 bucks.I have discovered that if you have cable tv, unplug the incoming cable in your cable box and see if hum disappears.

Nov 25, 2010 | Sunfire True Sub MK II Subwoofer

1 Answer

My woofer is humming i replaced the ic2030 but problem is not sol pl give mi solution


Hope u fixed this by now but I had a hum also and tracked it down to the cable box as found a site which told me to unplug the coax cable from the setup box and see if the hum stopped and it did. However after trying their suggestions and was gonna get a transformer went to my receiver I had used a dig coax for sound from the mot box to my receiver, pulled that cable and the hum stopped, replaced it with a toslink cause I had one laying around and have the receiver inputs for it end of hum for good so one more thing to try if your connected that way but it was definitely cable related.

Nov 11, 2010 | Sunfire True Sub MK II Subwoofer

3 Answers

My sunfire subwoofer starts making humm noise after a couple minutes while listening music,,, I have to disconnect and connect back, is something that involves equipmenrt adjustment?....thanks


Try plugging the unit into a clean power supply without anything else on it. I had this problem for years and eventually resolved it by moving the system to a different room that has three power circuits - the sub is now on it's own circuit and I don't have the problem anymore.

Nov 12, 2009 | Sunfire True Sub MK II Subwoofer

1 Answer

Sub doesnt do anything while plugged in ( Sunfire mk II)


Some subwoofers can sense the signal on their input and will only start when there's enough signal for long enough time for them to turn on the amp.

Try seting the "subwoofer signal out" on your reciever a bit higher, see if it does the trick, if not, try it with some other source (e.g. an mp3 or CD/DVD player) plugged directly into the subwoofer. If it still doesn't work, there's some other problem with your sub (bad connection inside sub, sub amplifier problems, maybe there's another fuse for the speaker itself, try to check it out).

If it works well with an alternate signal source, the problem might be either in reciever or the signal cable that you use, but could also be something else.

good luck

3rq8 (Triarcuate)

Jul 15, 2009 | Sunfire True Sub MK II Subwoofer

3 Answers

60 HZ hum


Rita's Vintage Audio Repair is a Bob Carver Company & can repairs & updates Subs at a reasonable cost try calling them.

May 05, 2009 | Sunfire True Sub MK II Subwoofer

2 Answers

Sunfire Subwoofer 110 Noise on input plugin


A few more questions-
Does the sub hum without anything plugged into it except for power? If it makes a real loud hum almost a squeal then I think the rca cable between the receiver and the sub is dead shorted and needs to be replaced. If it's more of a low level hum, then it's a ground hum caused by many things, ie........the receiver and the sub being on different power circuits in the house.......sometimes diconnecting the cable tv feed as it enters the room while the sub is connected and humming to see if it stops........the easy fix sometimes is using a 3 to 2 prong ac adapter but lifting the ground on such a powerful amp could be a fire hazard.

Sep 25, 2008 | Sunfire True Sub MK II Subwoofer

Not finding what you are looking for?
Sunfire True Sub MK II Subwoofer Logo

Related Topics:

696 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sunfire Audio Players & Recorders Experts

woodzowl307

Level 3 Expert

619 Answers

Joseph Hoffmann

Level 3 Expert

1693 Answers

yadayada
yadayada

Level 3 Expert

64034 Answers

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

Answer questions

Manuals & User Guides

Loading...