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Wurlitzer Lyric Jukebox
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| Cairn K05 | A Big Motorhome | Beresford DAC | Void Infinite 8 | Wurlitzer Jukebox | Frank Zappa's Mixer | VAC Valve Amplifier |
Complete custom designed amplifier and electronics for this classic jukebox.
Download all the design files, including the schematic and PCB artwork, for this product here:
2006-wurlitzer-lyric-jukebox-custom-amplifier.zip
Please click on the images to enlarge
- An old 45rpm Jukebox in a sorry state...
- Control and audio circuitry missing, mechanical condition was acceptable
- Using as many original parts as possible, we re-created the audio circuitry and added a custom-made modern and great sounding MOSFET amplifier (to replace the original transistor amplifier) and RIAA phono pre-amp stage.
- The two 12" loudspeakers behind the bottom panel were in need of attention and were re-coned by AudioLoudspeakers along with the two midrange/tweeter units behind the top panel.
- We fitted all this circuitry into the existing chassis and added a mono/stereo switch and volume and tone controls where they would have originally been.
- With a bit of a mechanical overhaul, the Jukebox was ready to be delivered to the customer back on song after 20 years.
Description of images:
- The original amplifier circuitry was missing for some reason, leaving only the chassis, heatsinks, and mains transformer. We decided to make a new one.....
- The new custom made amplifier and pre-amp circuitry occupies as much original space as possible including re-using the existing transistor mounting holes. The circuitry includes a sub-sonic filter, RIAA equalisation, volume, bass and treble controls, MOSFET power amplifier using Exicon MOSFETS, and full loudspeaker and thermal protection, and all this in stereo. We brought an old dog up to modern standards
- Side view of the new volume and tone controls. These protrude from the rear of the jukebox when the chassis is mounted in position
- Underside of the chassis shows the new tin-plated PCB, original and new wiring, and power supply filtering capacitors
- Close-up of the new PCB. Note the Abeltronics logo etched into the copper - this is a true custom product
- Completed and re-assembled jukebox installed in customer's home. She loves playing her old 45s on a great sounding machine!
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