20 Most Recent Sunfire True Sub MK II Subwoofer Questions & Answers

Tip

Sunfire Mk2 hum repair tips


Take a look at my video to get an idea of how to open the Sunfire MK2 properly and also get an idea what sort of dangers live inside the box. There are several fixes that have worked for me in the past and one that is not working now.
https://youtu.be/EHX86byhY9A

on Feb 03, 2018 | Sunfire True Sub MK II Subwoofer


Your sub may have gone into protective shutdown to prevent failure as a result of "thurderous (sic) performance".

Sunfire True Sub... | Answered on Mar 18, 2017


Start with the volume way down on the sub.

Connect the line out of a source you know is working with cables you know work to the inputs of the sub. Try left and right.

This will let you know if the problem is in the sub or the output you're trying to use.

Sunfire True Sub... | Answered on Oct 05, 2015


If you remove the volume knob, and tighten the nut below, it should take care of the popping noise, as well as any input noise issues. Based on my experiences with my MKII

Sunfire True Sub... | Answered on Sep 15, 2015


Hi,
I had the same problem as this, the fix was quite simple and the hum never came back.

If you pull straight out on the sub amp's volume knob it will slide off, then to fix the hum, tighten the nut that is behind the knob on the potentiometer and your hum should go away. My hum went away and never came back after this fix. Hope this helps you.

Sunfire True Sub... | Answered on Oct 14, 2014


Easy. Your home theatre amp will have a sub or LFE output ( RCA plug ). You simply connect this output to the input ( usually the left side, or use a Y splitter and use left and right inputs, or the LFE input if your sub has it ). Then, you must turn the sub on in your recievers setup menu, and your sub should work.

Sunfire True Sub... | Answered on Sep 23, 2014


you can try to replace it with a similar potentiometer if your soldering skills are up to par. Otherwise I'd just glue it.

Sunfire True Sub... | Answered on Jan 17, 2014


passive radiator is likely separated internally.

Sunfire True Sub... | Answered on Jan 17, 2014


The passive radiators on those are notorious for coming apart inside and making a knocking noise. You can sometimes glue it back together but youll have to remove the driver from the cabinet.

Sunfire True Sub... | Answered on Jan 17, 2014


Check on ebay, I see em occasionally.

Sunfire True Sub... | Answered on Jan 17, 2014


check the box for air leaks, or rubber surround deterioraton.

Sunfire True Sub... | Answered on Jan 17, 2014


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.

Sunfire True Sub... | Answered on Jan 11, 2013


sounds like a grounding issue........Verify grounded properly

Sunfire True Sub... | Answered on Dec 29, 2012

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