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Testing out my step-dad's old system and maybe blew crossover or tweeter

UCSBeatNick

UCSBeatNick

New Member
My step-dad recently passed away from a short but hard fought battle with cancer and while going through some of his things I came across his old hifi system. I brought it home and wanted to test everything out. As my mom had never seen any of it, I knew that nothing had been used it at least 21 years. I've discovered that everything needs work and it's over my abilities right now. Everything is in excellent cosmetic condition Pioneer pl-570, Pioneer ct-f700, and a Pioneer SA-9500 II. There are also some Bose 601s which need refoaming and cleaning. Anyways, I hooked up my turntable to the SA-9500 and it worked OK, but perhaps I set the cartidge load too high and now the tweeters in my Cambridge Soundworks M60s no longer work. I looked at the crossover and I can't see any signs of a burnout, but I tried hooking up another speaker to the wires and no sound. Any help or suggestions would be very appreciated. And if anyone knows of someone who can work on the other items in the Huntington Beach, California area please let me know. I'd love to get the other items up and running.
 
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If there aren't any fuses to the tweeters in the boxes then you may have opened up the voice cools.
If you have a multi meter you can pull the tweeters and see what the resistance is across the terminals. Open would be bad.
 
UCSBeatNick said:
My step-dad recently passed away from a short but hard fought battle with cancer and while going through some of his things I came across his old hifi system. I brought it home and wanted to test everything out. As my mom had never seen any of it, I knew that nothing had been used it at least 21 years. I've discovered that everything needs work and it's over my abilities right now. Everything is in excellent cosmetic condition Pioneer pl-570, Pioneer ct-f700, and a Pioneer SA-9500 II. There are also some Bose 601s which need refoaming and cleaning. Anyways, I hooked up my turntable to the SA-9500 and it worked OK, but perhaps I set the cartidge load too high and now the tweeters in my Cambridge Soundworks M60s no longer work. I looked at the crossover and I can't see any signs of a burnout, but I tried hooking up another speaker to the wires and no sound. Any help or suggestions would be very appreciated. And if anyone knows of someone who can work on the other items in the Huntington Beach, California area please let me know. I'd love to get the other items up and running.
Click to expand...

Are you saying that tweeters in both M60's failed at the same time?

We're you applying lots of power to the M60's?

Have you tried the M60's on another amp?

Now, you've made certain those "jumper clips" are firmly in place on the rear connectors of the M60's ... right?

Regards,
Jerry
 
My condolences...

Check the DC output of the SA-9500 per the link provided by Mark B above. This should always be accomplished prior to hooking up your speakers to an unknown amp to prevent any speaker damage from occurring. You may find that your DC voltage is high, which would explain your problem.
 
onplane said:
Are you saying that tweeters in both M60's failed at the same time?

We're you applying lots of power to the M60's?

Have you tried the M60's on another amp?

Now, you've made certain those "jumper clips" are firmly in place on the rear connectors of the M60's ... right?

Regards,
Jerry
Click to expand...
I switched the speakers back to my Sansui 881 after deciding the Pioneer SA-9500 II probably needed work, and that's when I noticed the tweeters on both speakers were out. My M60s don't have a jumper clip; they are a single connection and the crossover splits for the 2 way.
 
First of all, sorry for your loss.. and thank you for salvaging and keeping his system, as it may have been a supportive part of life during his difficult times.

I would suggest you start with the basics, the "head" or amplifier. Without getting techno, you can go to various sites that review vintage or name brand equipment to find out more about its specs and norms.

As for you speakers, the event with driver failure may be unrelated to the new hook up. But speakers are rather easy to troubleshoot and repair. If they work on another amp/reciever... they should work with the Pioneer. Just be sure to match impedance and not exceed wattage.

Another warning regarding TT (turntable) hookups and signal differences are that they are subject to unusual amplification based on cartridge type, line sensitivity and some other differences between amps and cartridges. Always engage a new hookup with caution by keeping volume low and tone settings flat. This can save you some real pain if a signal load makes it through to your speakers and threatens unprotected drivers.

Hope this helps in some way.. and again thank you for retaining a portion of your dad's legacy.
 
UCSBeatNick said:
I switched the speakers back to my Sansui 881 after deciding the Pioneer SA-9500 II probably needed work, and that's when I noticed the tweeters on both speakers were out. My M60s don't have a jumper clip; they are a single connection and the crossover splits for the 2 way.
Click to expand...

Sorry, you are right. It's the M80's that have those jumper clips.

You didn't notice the tweeters were out while connected to the Pioneer?

Do the M60's have any internal fuses?

I'm still baffled by two tweeters dying at the same time. Any chance something changed on your Sansui?

Regards,
Jerry
 
onplane said:
Sorry, you are right. It's the M80's that have those jumper clips.

You didn't notice the tweeters were out while connected to the Pioneer?

Do the M60's have any internal fuses?

I'm still baffled by two tweeters dying at the same time. Any chance something changed on your Sansui?

Regards,
Jerry
Click to expand...
I didn't notice when they went out, but I know they were working before I tried the Pioneer amp. And no internal fuses. I'm baffled as well.
 
You say you hooked up other speakers to the wires. What wires? The ones that feed the tweeters?

Rob
 
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