Tascam TSR-8 (1989)

Name: Tascam TSR-8
Brand: Tascam

Half-inch tape, eight tracks, and a transport that thinks for itself. Tascam's last serious reel machine for the project studio.

Overview

The TSR-8 is an eight-track, eight-channel reel-to-reel recorder that runs 1/2-inch tape on 10.5-inch reels at 15 ips (38 cm/s). Half-inch tape across eight tracks was the format that made the project studio viable in the late '80s. Tascam built this machine around a clever transport: an 8-bit microcomputer runs the show, and a separate 4-bit microcomputer on every channel handles record in/out switching. The payoff is gapless punch-ins and outs. The erase-to-record head spacing gets compensated automatically, so inserts land clean. Owners who came from mechanical decks notice the difference immediately.

The transport is full-servo. The capstan motor is FG-servoed, and each of the two DC brushless reel motors answers to the microcomputer. It reads tape tension continuously from non-contacting detectors in the tension arms and trims reel torque on the fly. That means gentle tape handling, plus a party trick: in edit mode you can move both reels by hand, one-handed, and the machine tracks what you're doing. The manual's own copy calls it "exceptionally reliable," which is marketing, but the servo architecture is real engineering and it's why these decks are still serviceable today.

Speed control is straightforward. A SPEED MODE switch selects FIX, which locks tape speed to 15 ips with a green LED, or VARI, which hands speed over to the pitch control for non-standard speeds, indicated by a red LED. Pitch range is ±12% in both record and reproduce. Wow and flutter is rated at ±0.06% peak, DIN weighted, which is respectable for the format. Start time to standard record/play speed is 0.8 seconds or less. A full fast wind of a 2400-foot reel on a 10.5-inch hub takes 120 seconds or less. Motion sensing is specified at 0.5 sec ±0.15 sec, which is the delay from stop to the next motion.

Inputs and outputs are all RCA jacks on the rear panel. The outputs carry either the tape signal or the source, depending on front-panel switching. There are no output level controls on the machine at all: output level equals input level, -10 dBV (0.316 V), with an output impedance of 100 Ohms unbalanced. If your mixer's phono outputs conform to the -10 dBV standard, 0 VU on the mixer should read 0 dB on the corresponding TSR-8 track. When they don't agree, the manual is blunt that you go by the recorder's meters, not the mixer's.

Synchronization is where the TSR-8 gets interesting. It ships with three separate external control interfaces. There's a parallel port (ACCESSORY 1) that brings transport controls out to individual pins for connection to SMPTE/EBU synchronizers like the Tascam ES-50 or ES-51, with inputs for status commands and a capstan drive reference frequency so actual record/play speed can be varied to hold sync. There's a serial port (ACCESSORY 2) speaking RS-232C to a controlling computer or a serial-capable synchronizer such as the Tascam MIDiiZER. The manual notes the machine works with other manufacturers' synchronizer/controllers too. And there's a REMOTE CONTROL connector for the optional RC-408 remote, which handles all transport functions. The TSR-8 senses external synchronizer control automatically and switches its servo between the external source and its internal reference. The front-panel EXT LED shows which state you're in. If the control signal or the 9.6 kHz reference drops out, EXT flashes and FIX comes on solid.

Track 8 carries a Sync Lock feature so time code or FSK signals can be recorded and played back without interruption and without dbx processing. The manual names the Tascam MTS-30 MIDI Tape Synchronizer as a source. You give up one audio track, but you keep your sync stripe clean.

Editing and locating are where the microcomputer earns its keep. There's a conventional return-to-zero, plus a two-point auto locator that also does repeat playback over a chosen tape segment. The Rehearsal and Auto In-Out functions automate punch timing without any external computer. Rehearsal runs a punch-in/out sequence as many times as you want before you commit it to tape, then Auto In-Out executes it. There are various EDIT and spot erase features, and an AUTO INPUT function that lets the studio and control room talk to each other through the tape returns. The digital fluorescent tape counter is tach-driven and reads in minutes and seconds from a zero reference.

The mechanical details are what you'll be living with. The pinch roller is a self-centering type with a urethane rubber coating chosen for resistance to both wear and cracking or hardening. That matters a lot twenty-five years on. The head configuration is one erase plus one record/reproduce head. Reels mount on NAB hubs with a three-detent holddown knob, and the manual is emphatic that both knobs be tight before you run tape. Cueing is via an electronically defeatable tape lifter. Rack mounting to a standard EIA 19-inch rack, such as the Tascam CS-607B, requires the optional RM-408 rack mount angle. Tascam warns against mounting to a warped or bent rack, since screwing the deck to a bad surface can misalign the transport.

The manual is refreshingly honest on one point: the warranty doesn't cover setup. Tascam guarantees the TSR-8 will perform properly only if it's adjusted properly, and guarantees that such adjustment is possible. If you go poking around inside and don't get it right, you're paying for the readjustment.

The TSR-8 is an eight-track half-inch machine with real synchronization chops and a transport that behaves better than most of its contemporaries. It takes 1/2-inch tape, which is still obtainable. The catch is the usual analog one: heads, pinch roller, capstan belt, and a servo system that needs someone who understands it. Tascam's own documentation notes the machine will operate with a variety of other manufacturers' synchronizers, which widens the options for anyone integrating one into a modern rig through the parallel or serial ports.