Pioneer PL-117D (1979)

A full-auto turntable from the late '70s that still spins fine, if you can live with its quirks.

Overview

Press start on the Pioneer PL-117D and the platter whirs up, then the tonearm swings over and drops onto the record. It's not flashy and not ultra-precise, but it's dependable the way old appliances were: built to last, easy to fix, and honest about what it does. Released in 1979, it sits in the middle of Pioneer's mid-tier turntable lineup. It offers full automatic operation at a time when convenience was starting to edge out purist design. It's the kind of turntable that ended up under the stereo cabinet in the den for Sunday afternoon records, a stack of Beatles and Fleetwood Mac.

Unlike the minimalist manual decks of the era, the PL-117D does everything for you. Press play and it lowers the arm, tracks the groove, then lifts and returns it when the record ends. That automation costs mechanical complexity, but for casual listeners it was a selling point, not a liability. The chassis is compact, made from a mix of die-cast metal and reinforced plastic. It has enough heft to resist resonance without being cumbersome. It's finished in warm silver or charcoal gray, depending on the market, with a clean, uncluttered face typical of late-'70s Japanese industrial design.

Sonically, it won't compete with high-end belt-drive decks like the Technics SL-15 or even Pioneer's own PL-530. It has a warm, forgiving midrange that makes older rock and soul records sound inviting. The bass is modest but present, and the treble isn't sparkling but avoids harshness. Paired with a decent receiver and bookshelf speakers, it sounds slightly soft around the edges. It's not a turntable for audiophiles chasing transparency. It's for people who want their records to sound like music, not measurements.

Specifications

Manufacturer	Pioneer
Production Years	1979
Original Price	$199 (approx.)
Turntable Type	Full-automatic, belt-drive
Speeds	33⅓, 45 RPM
Platter	Die-cast aluminum, 300 mm
Drive System	Belt-drive with AC synchronous motor
Tonearm	S-shaped, static-balance, aluminum
Effective Arm Length	218 mm
Overhang	18 mm
Cartridge	Pioneer PC-135 (moving magnet)
Stylus Type	Spherical
Tracking Force	1.0 – 1.5 grams (adjustable)
Frequency Response	20 Hz – 20 kHz
Channel Separation	30 dB at 1 kHz
Wow and Flutter	0.15% (weighted)
Signal-to-Noise Ratio	60 dB
Output Voltage	4 mV at 5 cm/sec
Input Sensitivity	4 mV (phono input required)
Connectors	Fixed dual RCA cables
Dimensions	450 × 145 × 360 mm (W×H×D)
Weight	6.5 kg

Key Features

Full-Auto Convenience with Real Trade-Offs

The PL-117D's full-automatic operation was a major selling point in 1979, especially for buyers who valued ease of use over tweakability. Press the start button and the turntable powers up, spins the platter, lowers the tonearm and begins playback. At the end of the side, it lifts the arm and returns it to the rest. No user intervention needed. A series of cams, levers, and microswitches under the plinth runs all this. It works reliably when clean and lubricated, but it can gum up over decades of dormancy. Owners report that dried grease in the return mechanism is the most common failure point, often causing the arm to stall or jerk violently. A proper service with Deoxit and fresh lubricant can restore smooth operation, but it's not a DIY job for the faint of heart.

S-Shaped Tonearm and Factory-Mounted Cartridge

The S-shaped aluminum tonearm reduces tracking error compared to straight arms by aligning the stylus more closely with the groove's tangent. It's a static-balance design, so setting the counterweight is simple (just spin the weight until it floats), but it's less resistant to resonance than dynamic-balance arms. The arm comes pre-fitted with the Pioneer PC-135 moving magnet cartridge, a no-frills spherical stylus unit that tracks adequately but lacks detail retrieval. It's not a bad starting point, but it's the first thing most owners upgrade. The headshell is removable, so swapping in a better cartridge like an Audio-Technica AT91 or Ortofon OM10 is straightforward with an alignment jig and a tracking force gauge.

Belt-Drive Isolation and Platter Stability

Pioneer stuck with belt-drive for the PL-117D, which helps keep motor noise down. The rubber belt connects the rear-mounted AC motor to the platter and decouples vibration. The die-cast aluminum platter is substantial for a mid-tier deck. It helps maintain speed stability and brings wow and flutter down to a claimed 0.15%. In practice, that number holds up well, especially after a belt replacement. That makes the PL-117D noticeably smoother than many direct-drive competitors in its price range. The rubber mat does a decent job of damping resonance, though some users report improved clarity with a cork or felt mat swap.

Historical Context

The late 1970s were a turning point for home audio. Vinyl was still king, but cassette tapes were gaining ground, and the first CD players were just over the horizon. Pioneer, already a major player in receivers and speakers, was expanding its turntable line to cover every segment of the market. The PL-117D wasn't meant to compete with the high-end audiophile crowd. That was the job of the PL-530 or PL-990. It targeted middle-class households looking for a reliable, no-nonsense turntable that would fit into a living room setup. It was often bundled with Pioneer's SX or FH series receivers.

At the time, full-auto turntables were a growing trend, especially in Japan and North America. Sony, Yamaha, and Technics all offered automated models, but Pioneer's execution stood out for its quiet operation and solid build. The PL-117D faced stiff competition from the Technics SL-B3 and the Sony PS-LX100, but it held its own with better isolation and a more refined tonearm design. It wasn't a groundbreaking machine, but it was a competent one.

Collectibility & Value

Today, the PL-117D trades in the $100 - $180 range on the used market, depending on condition and whether it's been serviced. Unplayed, uncleaned units often sell for less, but they come with risk: dried belts, sticky mechanisms, and worn styli are common. A fully restored example, with new belt, cleaned and relubed transport, and upgraded cartridge, can command closer to $200, especially if it includes the original dust cover and paperwork.

The most critical thing to check before buying is the auto-return function. A malfunctioning return mechanism can be repaired, but it requires disassembly and careful re-lubrication of multiple gears and cams. Service technicians observe that the plastic cams in the return assembly are prone to cracking if forced, so any unit that hesitates or jams during return needs caution. The belt is the second most common failure. Original rubber belts from 1979 have long since degraded, so assume it needs replacement. Replacement belts are widely available and inexpensive (under $10), and the swap is manageable for most hobbyists.

Another thing to check is the fixed RCA cables. They can't be upgraded, and if the internal wiring is corroded or damaged, repair becomes more involved. Some owners have resoldered connections or replaced the entire cable harness, but it's not a beginner-friendly mod. The tonearm wiring is also prone to fatigue at the pivot point, so listen for crackling or channel dropouts during playback.

The PL-117D has a loyal following among vintage audio enthusiasts who appreciate its balance of automation and analog warmth. It's not a showpiece turntable, but it's a usable one for a secondary system, a bedroom setup, or a beginner's first vinyl rig. It won't impress with detail or dynamics, but it will play records for years with minimal fuss.