The sub woofer worked for a about three months and then failed, no output. Klipsch replaced the bad amp with a new one, it worked for about two months and it failed, same problem, no output. I am down again, waiting for another new amp. There must be a design problem someone is overlooking. In both cases, the blue light comes on but there is no output.
Clearly there is something too highly stressed, badly designed or of inferior quality within the amp but without access to the circuits and more details it is impossible to know what that is.
From experience I would guess the truth of the matter is the company has not designed and/or built the amp itself but has either contracted-out this part of the production or has bought in ready-built amplifiers and adapted them for their purpose. Such a thing is common in commercial production and cuts production costs/increases profits drastically. It is not unusual that these practices result in things being short-lived and unreliable...
Those who buy in ready made modules tend to be divorced from intimate contact with the circuits and the components used and often don't possess the required technical expertise for the task and are simply reading specifications and the bottom line and such people have the unfortunate habit of expecting a pint pot to contain a quart...
Considering the increased profits, such people neither want or expect perfect performance or reliability just merely that most of the people most of the time are satisfied and not enough are dissatisfied to affect the overall brand reputation...
Maybe it will be third time lucky for you...
SOURCE: klipsch subwoofer
its all about impedance matching...did you check to see that the new yamahas would drive from the system, before installing them? sounds like you will need to possibly add a matching transformer or other device on this one.
SOURCE: KLIPSCH SUB WOOFER SW350 PARTS
you can order it on internet either asking the electronic companies, i tried that years ago found in usa a company which gave me a direction of a ic production company of tailand - ad the end it leaded again to a company near tepic where everybody were looking for .and here we go just right on front of the electronical ingeneur which said here in the whole country is nothing.
SOURCE: My klipsch sub woofer power is on but no bass is coming out.
Then either your amp is not working or the speaker in the cabinet is blown. If you do not know how to test this, you need to take it to a repair shop.
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