Kenwood KD 2055 doowwnek 2503

Kenwood KP-2055 Belt-Drive Turntable Repair

So, this is the other synthetic composite deck! The Kenwood KP-2055 is one of those elusive decks here in Australia that I rarely get to see. Think of this as the belt-driven cousin of the Kenwood KD-500/550 and KD-600/650. 

The KP-2055 is a belt-drive turntable from Kenwood, featuring the same ARCB Anti Resonance Compression Base proprietary synthetic chassis as its more famous relatives. The KP-2055, however, features a fixed tonearm and some other automated features. You can read much more about the other ARCB decks in my posts here, here, here, here and here.

If you look at the photos below and compare the design to the KD-500/550 and KD-600/650, you’ll see immediately that the chassis design is very similar across the range of decks. The ARCB material has been injection-molded to create the ribs and structures we see in these chassis. Various boards and parts are secured with captive brass fittings, because the ARCB is brittle and not suitable for tapping.

The issues with this particular deck related to the arm-return mechanism, the awful cartridge someone had installed and the need for a new belt. The deck was easily repaired and really belongs in a class of ‘sleepers’ – decks that perform really well, but are less popular than others of the same era.

You can read more at the Vinyl Engine, some specifications from their website, below:

Drive: belt-drive system

Motor: 4-pole synchronous

Platter: 30cm aluminium alloy die-cast

Speeds: 33.33 and 45rpm

Wow and flutter: less than 0.06% WRMS

Signal to noise ratio: more than 50dB

Tonearm: static balance type, s-shaped pipe arm, eia plug-in connector

Effective length: 215mm

Overhang: 9.5mm

Stylus pressure range: 0 to 3g

Usable cartridge range: 4 to 13g

Dimensions: 480 x 363 x 146mm

Weight: 11.7kg

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OK, so here we can see the ARCB material and the complex mouldings possible with it. Note the speed controls to the bottom left., as per most Kenwood decks.
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Close-up of top of deck, showing auto stop and arm return lever, plus belt-drive motor and pulley changer bottom left.
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Underneath the deck, we can see the proper motor for the belt-drive, not some puny little thing you’d see in a Rega for example, plus the large arm return mechanism in the top left. This is a silicone oil-filled device, that dampens and returns the arm to the start position.
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Very simple layout really, all parts bolted to the ARCB chassis.
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Cheap cartridges like this one have absolutely no place on a deck like this, or any deck for that matter.
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The spindle bearing was also dry, needing a clean and a dose of synthetic bearing oil…
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Some wear is evident on this spindle shaft, but that is to be expected, especially given that the deck had obviously not been lubricated since manufacture.
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This part of the deck was messy, with silicone oil having wept from this cork gasket. I found that there was still enough of the oil left to do its job though, all she needed was a thorough clean and removal of the oil that had migrated inside the machine.

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5 thoughts on “Kenwood KP-2055 Belt-Drive Turntable Repair”

  1. Thanks for the reply sir! I’m fairly sure it’s an issue inside the player’s grounding points or possibly the power supply is going bad. I’ve done everything I can on the outside in alternative earthing techniques so I’m going to turn it over to a professional in my area as I’m barely an apprentice+ level speaker builder … the inside of this “fairly simple” turntable design is too intimidating & far too tiny for me to explore any further with my fat fingers.

  2. Hi Mike, I love your site! I’ve recently acquired one of these turntables & am having trouble banishing some hum & motor noise. In the picture of the underside I notice a grounding point with a green wire that mine doesn’t seem to have. Was this a fix for grounding issues you did to this table or do you have any suggestions for me to try otherwise? Thanks & keep up the awesome work & pictures!!

    1. Hi Tim, thank you for the kind words! The earthing wire was already there, but you will find regional variations with all electronic equipment, depending on local earthing and other safety requirements. It certainly can help to have an earth reference with a deck like this, so by all means experiment a little, but just be careful. Something in the signal chain should be mains earthed, so experiment with your preamp and the connection between it and the turntable, this is often where ground loops and hum can become problematic. You’ll also want to establish whether it is hum or motor noise, as the solutions are quite different. Cheers, Mike.

  3. Love reading of these restoration gigs. I had completely forgotten about the marble Kenwoods and what objects of desire they were, way back in my youth. Now I can afford one, and I just have to be patient until one appears on the market in restore-worthy condition! You didn’t mention what cartridge you replaced the nasty one with, on the KP-2055. I would guess an Ortofon 2M once again? With their middle-ground weight, moderate tracking force, and moderate compliance, they seem to be ‘about right’ for most arms.

    1. Hi Selwyn, glad you are enjoying the blog! Yes the ARCB Kenwoods really are excellent and I get to work on quite a few of them. I can’t recall what cartridge I installed on this one as the actual repair was a while ago, but you are correct about the 2M range and I fit a lot of them. Regards, Mike.

Thanks for reading, leave a comment and let me know what you think!