Replace the capstan drive belt, also still available from Pioneer. Vintage Electronics – $64.00 for 2 pinch rollers Terry’s rollers – pinch roller rebuild $75.00 for 2 Rollers are still available from Pioneer at a reasonable cost. – Replace both pinch rollers (for some reason, all RT-909 original pinch rollers are gooey/gummy at this age), and adjust the pinch roller pressure.
– Perform a complete initial functional test, to determine if there are any repair operations need to be performed before restoration, and to provide a baseline for comparison with post-restoration performance. We have included some part numbers and sources to make it more accessible. Here’s a very decent Service Summary that seems to be widely circulated on the Internet. Mic x 2: 0.316mV /80mV/27K ohms, 6mm phono jacks Semi-conductors 4 Fets 43 ICs 121 transistors 125 diodes 2 photo interrupters Signal to noise ratio 60dB at 7½ ips,better than 55dB at 3¾ ips Wow & flutter Less than 0.04% at 7½ ips, less than 0.08% at 3¾ ips Motors FG Servo DC dual capstan drive motor – 2 x 6-pole inner-rotor special induction reel motorsįrequency response (3dB) 7½ ips: 20Hz to 28kHz with LH tape – 3¾ ips: 20Hz to 18kHz with LH tapeĮqualization NAB curve on both tape speeds speeds Heads (4) Ferrite erase head, Hard Permalloy recording head, 2x Hard Permalloy playback heads
Independent microphone and line mixing inputs, Azimuth adjustments for the heads, Fluroscan meter, 4 digit tape counter, Timer start switch Relative to similar Akai or Teac models, the 909 has a very deep rich bass sound quality. Whatever the price, the combination of ultramodern appearance and very decent sound quality combined to make this a winner for Pioneer, who likely sold significantly more units than the more expensive (and superior) Technics 1700. We have seen buyers guides list the 909 selling at $795 in 1982 but many people on the Internet report that it sold for $1100. Rack-mountable and designed to take 10½ ” reels, Pioneer also produced a non-auto reverse model, the RT-901. A closed-loop dual capstan drive system isolated the tape at the heads from any external interference, which resulted in a constant tape-to-head contact. The RT-909, an auto reverse / auto repeat-playback stereo tape deck produced from 1979 until 1984, has 4 heads with reverse playback (erase, record and two playback).
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