This is a Kenwood KD-500 with tons of upgrades.
For starters, I completely disassembled the turntable to service the motor and controls. The tone-wheel was cleaned, and the spindle was cleaned and lubricated. I replaced the electrolytic capacitors in the power supply for peace of mind and serviced the switches. I cleaned everything and began reassembly.
Throughout this project I made major improvements to many aspects of this turntable. The plinth is very study and heavy, but the factory feet didn’t isolate vibrations well. I addressed the dampening by installing IsoAcoustic GAIA III feet. With these feet isolation to vibrations is vastly improved and it is much quieter overall.
I then worked on the Grace G-707 tonearm. I rewired the arm with Cardas 33awg shielded Litz wire. The shielded wire is awesome, and I ran the shielding to the ground-pin. When the turntable is grounded to the preamp, the tonearm shield is the only connection to the ground. This removes all interference from the motor and outside factors. I terminated the new tonearm wire into Cardas Rhodium Cartridge Clips. These are excellent quality ends that grip cartridge pins reliably. I cleaned and lubricated all the bearings and reassembled the tonearm to factory specs. I installed a new Hadcock headshell in place of the cheap plastic headshell used by Grace. The tonearm wire is a Silvercord Plus and is 1 meter long.
The Kenwood tonearm mount was replaced with a solid piece of aluminum machined specifically for this turntable. The center bore of the mount is 25mm and is off-center by about 10mm. The mount is finished in black wrinkle paint. Finally, I installed a new Ortofon 2M Bronze Cartridge to the arm.
I set the alignment, azimuth, tracking weight, and began testing. No surprise, the turntable is amazing. It’s a great design that still looks modern and maintains excellent vintage build quality.
This turntable is in excellent condition with just a few minor imperfections on the dust cover. If you have any questions about the Kenwood KD500 please let me know. Thanks, -Bob