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Kenwood KL-777A Pair Subwoofers stopped working :(

Z

Zjm4192

New Member
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Hey guys, I was recently given a set of the Kenwood speakers above, I powered them with a Yamaha receiver I got second hand, the model number of the receiver is R-S202. I finally was able to play some music through them and they sounded great! All parts of the speaker were working fine, but then all of a sudden, with both woofers, I gently touched the cone with my finger (and I mean very gently) and now both don’t put out any bass. I noticed when I applied a little pressure to each woofer, the bass would come back. I’m not sure why it’s doing that or what part it may be, but it seems I will have to take them out and replace something on each. If anyone could tel me what part is needed or why that is, I would greatly appreciate it. Thank you!

I also want to know what the name is of this little cap looking part to the tweeter I have shown in the picture, and whether or not it can be replaced since it is smushed. Thanks again guys! I have pictures below in case anyone can spot any reason as to why the woofers are behaving like this.
 
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First of all, those are not subwoofers, they are woofers. As for what is wrong with them, I have no idea. You might want to take them out and check for resistance with a Digital Multi Meter. Before pulling them out completely, check to see if the wires from the crossover are connected correctly. If you do pull them out, take a photo of the connection so you reconnect them correctly.

The pushed in tweeter may be pulled out by using sticky tape, a vacuum hose, or a needle, which can be inserted at an angle and carefully pull the dust cap out.

While they are playing, rotate the control pots back and forth and listen to hear if that affects the sound or if they are possibly intermittent or scratchy sounding.
 
classic carl said:
First of all, those are not subwoofers, they are woofers. As for what is wrong with them, I have no idea. You might want to take them out and check for resistance with a Digital Multi Meter. Before pulling them out completely, check to see if the wires from the crossover are connected correctly. If you do pull them out, take a photo of the connection so you reconnect them correctly.

The pushed in tweeter may be pulled out by using sticky tape, a vacuum hose, or a needle, which can be inserted at an angle and carefully pull the dust cap out.

While they are playing, rotate the control pots back and forth and listen to hear if that affects the sound or if they are possibly intermittent or scratchy sounding.
Click to expand...
Hhahaha! you beat be on the ''subwoofer thing'' :p.
You should remove the woofers and inspect the terminals and, the tinsel wires from cone to said terminals.
 
turboyam said:
Hhahaha! you beat be on the ''subwoofer thing'' :p.
You should remove the woofers and inspect the terminals and, the tinsel wires from cone to said terminals.
Click to expand...

I am not familiar with what I would be looking for in particular after I pull them out, do you have a good reference picture or website to see what tinsel’s look like, or what they are supposed to look like with a proper functioning woofer? Appreciate the advice so far guys, I also corrected the OP to say “woofer” lol
 
Here you go!.
Speaker%20lead%20wire.jpg
 
Or save the time and energy and list them in free section of CL. Then look for better speakers with higher quality subs. :rflmao:
 
''Subwoofer'' and ''turbo'' are sooo over-employed words!.
Nahhh, this is a very easy problem to fix, no doubt but strange that it occurs on both woofers at the same time :idea: .
 
turboyam said:
'Nahhh, this is a very easy problem to fix,
Click to expand...
Not necessarily. It could be as simple sounding as the voice coil separating from the tinsel, as mentioned above, but it's not always trivial to fix that, at least not for an amateur. Typically that connection is under the dust cap.
 
Ok guys, took the woofers out. Attached are pictures of the tinsel and terminals, as ana amateur I think they look fine to me, but maybe there’s something im missing. I will pull the back out of each speaker and see what the solder looks like on the opposite end of the wires and attach pictures as well.
 

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Try hooking up a 1.5volt battery to the loudspeaker terminals ( the whole thing), and, with the woofers out of box, wiggle the terminals and tinsels...
You could do the same with music but try the battery.
 
Where can I get that battery? Would I need wiring to hook to the terminals too? I am very new to all of this :)

turboyam said:
Try hooking up a 1.5volt battery to the loudspeaker terminals ( the whole thing), and, with the woofers out of box, wiggle the terminals and tinsels...
You could do the same with music but try the battery.
Click to expand...
 
A standard AAA, AA, C od D cell, like in a flashlight. There is corrosion on the magnet, reinforcing the bad connection theory.
 
Wire the battery straight to the speaker. Or connect the speaker wire from your receiver straight to the woofer speaker terminals.
Those are very good speakers. Some people don't think so. I think they are wrong.
Yes the woofers may prove to be bad, probably not. Replacements are readily available and don't cost much. Beware that about half of them will have stiff surrounds. Avoid that.
The little tweeter with the dent is also available and doesn't cost much. Replace it.
The weak link is the mid drivers. Get spares.
P1140009.JPG
 
K stands for Kabuki LOL..

And yes Ive owned a pair in my lifetime... Id happily buy a pair again if they sold as well as Pioneer CS-99A or Yamaha NS-690's!!
 
Is there a website that you’d recommend to find these replacements? Also, for the mid drivers, do you recommend a specific size and brand? I appreciate you!

quiet said:
Wire the battery straight to the speaker. Or connect the speaker wire from your receiver straight to the woofer speaker terminals.
Those are very good speakers. Some people don't think so. I think they are wrong.
Yes the woofers may prove to be bad, probably not. Replacements are readily available and don't cost much. Beware that about half of them will have stiff surrounds. Avoid that.
The little tweeter with the dent is also available and doesn't cost much. Replace it.
The weak link is the mid drivers. Get spares.
View attachment 2081915
Click to expand...
 
nolasally said:
K stands for Kabuki LOL..

And yes Ive owned a pair in my lifetime... Id happily buy a pair again if they sold as well as Pioneer CS-99A or Yamaha NS-690's!!
Click to expand...
They're now selling for about $300. That's up from $100 last year.
 
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