Re: DQ-20i muted output from one speaker
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Greeting Kory,
Well prior to jumping to any conclusions check the a/c voltage. Compare the voltage level at the driver on both speakers preferably with a true rms meter. And at the speaker inputs. That will tell the tale electrically. You may have a voice coil that has shifted higher in resistance. Or perhaps just a high resistance solder joint.?
Over the years I have found balance controls are frequently not centered in the center position. So don't assume that the center is balanced. Again the meter is your friend.
DD
I¡¯m sure are familiar with the KISS principle.? Start with the simplest possible issue and work up to the more complex.? Connections and surrounds would be my first areas of investigation.? While capacitors and resistors do fail, connections and foam surrounds are much more common. ? Simplest test is to remove the woofers from the cabinets and run a 50Hz low volume sine wave through them.? If one of the drivers are bad you will know.? Since I am not familiar with DQ20¡¯s, check the surrounds on the drivers.? The surrounds on the DQ10¡¯s typically need to be re-foamed due to deterioration of the foam surround.? A loose connection on a driver can also result in lower volume, particularly a poor ground.? Check the connections while the drivers are out of the box. ? If one of these issues is not the culprit, then I would look for signs of burning or overheated passives on the cross-over.? I don¡¯t have a copy of the cross-over schematic¡it should be a fairly straight forward parallel 3-way design.? Look at the components in the woofer and mid-range high pass sections of the cross-over.? If you want help identifying those section there are many on this group who can help. ? ? ? I have a pair of DQ-20i and the right speaker is having issues. All drivers (woofer, midrange and tweeter) ?are putting out sound, but when I run a 50 hz tone through them, and move the balance back and forth, the right speaker much more quiet. My uneducated guess is that I am having an issue in the crossover (one of the caps going bad?).? My crossovers have the black Solen caps, and they look like they are in good condition, but being nothing more than a neophyte, I am not confident I know how to test them.? Could it be the midranges?
If it is the capacitors, any recommendations on what brand and where to buy them?
On a related note, has anyone considered moving the crossovers out of the box and into an external enclosure for easier access and tinkering? I met a guy that builds high end speakers and he does this.? Seems convenient.
Thoughts? ?
TIA.
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