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Realistic Minimus-26 woofer - no sound

kyruxmacist

New Member
I picked up a pair of Minimus 26s at Salvation Army over the weekend, for the $5 it seemed worth the gamble and they appeared to be in good shape. The timing worked out well as I needed a smaller set to test out my recently cleaned up Pioneer SX-434 which will eventually be connected to a set of Realistic 8Bs that may have their own issues (we'll save that for another thread).

Got everything hooked up and they sounded great. Just had the FM jamming and I was really pleased as I ran through checking the bass, treble, balance, etc knobs on the receiver. All good.

Those little 26s put out a big sound as Tom Petty came on and I decided it was time to turn it up a bit. Got the volume up around ¾ of the way and they were pumping, sound was good and then suddenly the right woofer stopped. I turned it back down, played with the balance, tweeter was still doing its thing, and the left speaker still great. When I put my hand gently on the woofer it acted like it wanted to come back in, but just wouldn't go.

I don't know what these speakers' life was like before this, but all told this was maybe 5 to 10 minutes of run time total, mostly at low volume. The 26s are rated at 40 watts and the SX-434 is about 15wpc and was only turned up loud for a minute tops. Doesn't seem likely that would blow the speaker. There was no distortion, buzz, hum, etc.

I pulled the woofer out just to peak, everything appears to be in good shape, but admittedly I know little about speakers or what might cause such a thing. As such, I appreciate any leads, input, and/or advice.
 
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Hello kyruxmacist . Welcome to AK. Wonder If there was a loose connection to the to the woofer. Do you have a meter that reads resistance? Seems strange for the woofer to quit so quick. Looked up the speaker, just a simple one cap crossover. Open them up and look. Here there are a few threads on the 8b's including modifying the crossovers if you want to look. If you have the meter disconnect the woofer wiring and read the resistance of the woofer (6-8 ohms I think). Good luck. Oh have seen the woofer on Ebay.
 
Hello kyruxmacist . Welcome to AK. Wonder If there was a loose connection to the to the woofer. Do you have a meter that reads resistance? Seems strange for the woofer to quit so quick. Looked up the speaker, just a simple one cap crossover. Open them up and look. Here there are a few threads on the 8b's including modifying the crossovers if you want to look. If you have the meter disconnect the woofer wiring and read the resistance of the woofer (6-8 ohms I think). Good luck. Oh have seen the woofer on Ebay.

Thank you. I do have a multimeter, not the most adept at using it but I think I can figure it out. My interest in electronics is new for me but I'm really enjoying reading and learning and looking forward to learning how things work and being able to repair. Appreciate the lead Nad80!
 
Your welcome. Post the resistance reading across the speaker terminals and we'll go from there.
 
Open the other working speaker and measure across the terminals. If the voice coil only measures 2.4 ohms could be a shorted VC. Especially if the good one measures 6-8 ohms.
 
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