Question about Bose Companion 2 Series II Multimedia Speaker System (2-Piece)
I bought these speakers around a year ago, and only in the past week have I had problems. On select songs, the bass will tend to rattle in a manner which suggests it is blown. But for most other songs, there is nothing to indicate that there is a problem.
My Companion 2 speakers were having the same problem with the rattling on certain frequencies and I am happy to say that Steve Allison was correct in my case. The speakers don't handle surround settings very well so if you're running your speakers through a source that had that setting turned on the easiest way to stop the rattling is to just turn the surround setting off. The speakers weren't really made to handle that kind of a signal.
Posted on Jun 26, 2016
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Posted on Jan 02, 2017
The intensive bass is making the speaker shake very much and that could have caused a short that changes the volume after a while when the speaker has been shaking for a period of time. You could try lowering the bass or volume to see if it makes a change in how long it takes to make the volume change.
Posted on Oct 22, 2008
Hi and welcome to FixYa,
Appreciate the direct "Ask Me".
Initially, the 14 seconds interval is significant. This is indicative that whatever fault it is, it is coupled to a time-based circuitry. The time-based circuitry need not be complicated. it can actually be a simple resistor/capacitor network. The capacitor takes a certain amount of time to charge and then discharge (14 seconds, 'whoomp'). Having said this, then the foremost suspect would be an electrolytic capacitor, probably low value (1~4.7uF), probably a coupler/decoupler. Of course the capacitor serving other functions could very well be the culprit as well.
Corrective measure would entail, identifying/determining which capacitor and replacement. Tedious as it may sound, each capacitor would then have to be tested for capacitance and leakage out of circuit or at least 1 leg un-soldered.
Good luck and Thank you for using FixYa.
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Posted on Dec 27, 2008
> I turn the volume to a low it still has the odd noise
If there is any drive to the speaker at all (volume not turned off), the rattle is probably coming from a broken 'surround;' the part that keeps the cone centered around the outer edge.
Another point of failure is a structure called a 'spider' that is located between the voice coil and cone that ensures the voice coil stays centered.
If there is hum with the volume turned completely down, the amplifier driving the speakers (internal or external) has a failing filter in the power supply.
Posted on Dec 14, 2009
SOURCE: Main Bass speaker not working!!
Hello Adam Hi, it looks like your main IC amplifier inside the main bass box is bad, need to replace that IC. What are your plans, do you want to do the repair or have it service by a tech guy.
Posted on May 06, 2010
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