Garrard Zero 100
Automatic Record Changer
The Garrard Zero 100 is a superb two-speed transcription turntable with such special features as:
An ingenious tonearm virtually without tracking error (patent applied for) with damped cueing action.
A magnetic tonearm anti-skating system (patent applied for).
A motor with the advantages of both induction and synchronous motors (patent applied for).
A record speed and pitch control system with built in stroboscopic checking.
A tilting device to set the cartridge at a 15 degree tracking angle.
In addition to manual operation the Zero 100 will automatically play single 7", 10" and 12" records, or a stack of up to seven 12" records - adaptors are available to play records with large centre holes and to play a stack of 7" records.
Type: automatic record changer
Drive method: idler wheel
Speeds: 33 and 45rpm
Pitch control: plus or minus 3%
Motor: 4-pole induction for starting with synchronous section for constant running speed
Tonearm: head pivots laterally as it tracks a record
Wow: better than 0.10% RMS
Flutter: better than 0.05% RMS
Power supply: 110/125V or 110/120V and 220/240V depending on motor coil windings
Power supply frequency: 50 or 60Hz depending on pulley and stroboscope fitted
Garrard's Zero 100, in basic performance, easily ranks with the finest automatic turntables on the market. In our view, the results were well worth the effort - $189.50 Stereo Review 1971
reviews (en) - Jandar
service manual (en) - steve berens
info sheet G7216 (en) - steve berens
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Garrard Idler Drive Turntables
Garrard Zero 100 / Zero 100 owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are provided under strict licence. Reproduction without prior permission or for financial gain is strictly prohibited. This website is not affiliated with or sponsored by Garrard.
Submitted by LesPaulUser
This is a great turntable. I have had mine for many years and am very pleased with it. I took mine back out of retirement a few months ago and found that things weren't working so well. However, I carefully removed the main gear/cam, removed the dried grease (from the bushing) with a q-tip and alcohol and lubricated with WD-40. I lubed a few other spots with WD-40, as well. Now, all is well again with this dear classic from the '70s. Grease was never a good idea with these old turntables. All they ever need is a shot of very-light oil now and then.
Submitted by adlpc
Have two of these and absolutely love them. One is original and in like new condition, and the other has been completely rebuilt as a gutted minimalist manual turntable. Careful attention and minor annual maintenance make these excellent performers. The ingenious and elegantly simple engineering solutions eliminated some of record playbacks biggest sources of distortion and was carried out amazingly well for its price and era. The motor, a synchronous design is extremely quiet and stable and very well engineered into the design. They also had other features that were later adopted by the industry. Yes, they are a little finicky, so not for the lazy or faint of heart, but very rewarding when set up properly as the starting track and specially the end of side distortion is pretty much eliminated. The rumble is not excessive and can be reduced considerably by application of new materials in the idler and the platter's idler contact surface as well as sound deadening material on the underside of the platter and a high quality record mat. A well maintained arm works amazingly well, while an abused arm is nearly useless as the pivot bearings become loose and flimsy. For the underside control mechanism, proper cleaning and lubrication is essential. WD40 is NOT a lubricant! Use alcohol and WD40 for cleaning only and use a good mid to heavy viscosity fine quality Silicone oil for lubrication.
These are very fine examples of the best changer and consumer record player technologies and designs of the time and it actually works! With a good quality modern cartridge they perform better than most with zero tracking distortion across the record from the first track to the last!
The later SB version, although preferred by some had more wow and flutter. A next model, the GT55 had a better arm made of magnesiem, but the drive motor was a major downgrade in quality and performance.
Submitted by a76bef
Many of the problems with Garrard changers was hardened grease. First job with any old Garrard changer is to remove the hardened grease. One Zero 100 changer I saw had old hardened grease on it so long that the grease had fossilized, it was like concrete.
Submitted by anmpr1
This is a frustrating turntable. The idea of a pantograph pivoted arm to eliminate tracking error is a valid approach. Unfortunately, its execution in cheap record changer left a lot to be desired. First the good news. Tracking error is easily heard, and this arm produced a clean sound--as far as that part of the record playing equation went. However, the overall engineering was, how can I put it?, rather disjointed and clunky. Arm bearings were not tight, and in the examples I owned (two over the years) quite wobbly. Magnetic anti-skating was, however, sophisticated. The idler wheel drive (replaced by a belt in subsequent models) produced quick start up, and rumble. The automatic function was accomplished by a Rube Goldberg set-up, typical for changers of that era. The highly sprung deck made use of the controls a finicky affair. In the end, the reduction in tracking distortion just wasn't worth the major trade-offs. To paraphrase Peter Aczel's review of the Stax electrostatic headphone/amplifier combination (a review in his earlier subjective days that was probably unfair to Stax), if Garrard's picture window wasn't so clean, people couldn't see how messy their living room was.