I purchased these B&O Penta MKI speakers off of Craigslist from a gentleman planning on moving out of town. He was trying to lighten his load before his travels. His family was the original owner of the speakers, so it was interesting to hear their history. He said that the amp in one had blown out so he bypassed it and ran the speakers with a Sony receiver. He and his friends named them “The Twins” since they would crank them up and their music could be heard from down the block. I had a feeling this would be quite a project but the seller offered me a good price.
So begins, “Project Twins”
My initial thoughts, before opening the speakers were that I’d have to fabricate new metal, re-foam, replace the fabric, re-cap, and fix the amplifier fault. If only life were so simple…
Here are the initial pictures:
Power mains and fuse box had been cut off:
Damaged speaker frets:
Dry rotted foam speaker surrounds:
Smashed in woofer dust covers:
Missing metal speaker cap:
Scratches and dents on all metal:
Speaker wire sticking out of the bottom:
Another good sized vertical dent:
Dirty and bent top cap:
Resistor unsoldered from excessive heat:
Burnt out resistor on crossover:
Burnt out resistors on crossover, melted coil:
More crispiness:
Another fried resistor and coil:
Missing mains and damaged plastic from speaker wire hack:
Next: Vintage Bang & Olufsen Penta Restoration “Project Twins” – Part 2
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