TEAC/TASCAM 234 Syncaset rack mount 4 track cassette recorder with 90 day warranty dating from 11 April 2017. Warranty covers all work performed and transfers fully to new owner. Superb condition, professionally inspected and refurbished by AzTech of Watertown MA, restored to factory spec. Tested and 100% functioning, includes service receipt. Very low hours and good cosmetic condition.
The TASCAM 234 Syncaset was the first 4-track rackmountable cassette recorder/reproducer with dbx and 3 3/4 IPS tape speed.
4-Track
cassette-based recorder with 4 VU Meters for each channel, 4 section
for channel control (input level signal, output balance), digital
counter, noise reduction system, jack for headphones (volume control).
An output select button switches between the four back panel inputs and
the four tape outputs. Power consumption 30W.
Mechanical
Tape: Compact Cassette, C-30 to C-90, chrome (cobalt) tape (70 µs EQ)
Track Format: 4-track, 4 channel one direction recording/playback
Heads
4x channel record/playback (Permalloy)
4x channel erase (Ferrite)
Motors
1x FG servo-controlled DC capstan motor
1x DC reel motor, 1 DC control motor
Tape Speed 1: 9.5 cm/s (3-3/4 ips) ±1%
Pitch Control: ±12% of normal tape speed
Wow & Flutter1: ±0.06% peak (DIN/IEC/ANSI weighted) 0.04% (NAB, weighted)
Fast Wind Time: Approx. 85 seconds for C-60 tape
Recording Time: 15 minutes for C-60 tape
Phones Output (Stereo)
Nominal Load Impedance: 8 ohms
Minimum Load Impedance: 4 ohms
Maximum Output Level: 100 mW (8 ohms)
Frequency Response: 20 Hz - 20 kHz +0/-2 dB
S/N Ratio One mic/inst in to line out
68 dB (Trim max.)/82 dB (TRIM min.) (IHF, A weighted)
64 dB (Trim max.)/78 dB (TRIM min.) (unweighted, 20 - 20,000 Hz)
One line in to line out: 82 dB (IHF, A weighted); 78 dB (unweighted 20 - 20,000 Hz)
Total Harmonic Dist.: 0.05% (1 kHz, OVU)
Crosstalk: 65 dB (1 kHz)
Peak Level Indicators: Light up at 8 dB above OVU
Recorder Section
Record Channels: 4 (4 dbx II NR, switchable)
Playback Channels: 4 (4 dbx II NR, switchable)
Record Level Calibration: 160 nWb/m tape flux level (0 VU reference)
Bias freq.: 100 kHz
Equalization: 3180µs + 70μs
Overall Freq. Response²: 40 Hz - 14,000 Hz ±3 dB at 0 VU (Rec/Repro)
Signal-to-Noise Ratio² Referenced to 3 % THD level [285nWb/m] at 315 Hz
54 dB (dbx Out, IHF, A weighted 400 Hz)
52 dB (dbx Out, unweighted, 20 Hz - 20,000 Hz)
95 dB (dbx In, IHF, A weighted 1 kHz)
90 dB (dbx In, unweighted, 20 Hz - 20,000 Hz)
Total Harm. Distortion²: 1.0% (400Hz,OVU)
Crosstalk: 70 dB (1 kHz, OVU, dbx IN)
Erasure: 70 dB referenced to 285 nWb/m at 1 kHz
Power Requirements: 220 V AC, 50 Hz, 30W
Electrical
Mixer Section
MIC/INST Input
Input Impedance: 100k ohms, unbalanced
Nominal Input Level: -60 dBV (1 mV) to -10 dBV (0.3 V)
Min. Input Level: -70 dBV (0.3 mV), at TRIM max.
Max. Input Level: +15 dBV (5.6 V), at TRIM min.
Line In
Input Impedance: 22k ohms, unbalanced
Nominal Input Level: -10 dBV (0.3 V)
Min. Input Level: -20 dBV (0.1 V), at INPUT max.
Max. Input Level: + 15 dBV (5.6 V)
Line Out
Output Impedance: 100 ohms
Nominal Load Impedance: 10k ohms
Minimum Load Impedance: 1.7k ohms
Nominal Output Level: -10 dBV (0.3 V)
Maximum Output Level: + 15 dBV (5.6 V)
Cue Out (L,R)
Output Impedance: 100 ohms
Nominal Load Impedance: 10k ohms
Minimum Load Impedance: 1.7k ohms
Nominal Output Level: -10 dBV (0.3 V), PAN fully L/R
Maximum Output Level: + 15 dBV (5.6 V)