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Sound Rating: 7 / 10 # Owners: 1
Relaibility Rating: 8 / 10 Views: 15

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Technical Details

Brand: Teac

Model:A-7400RX

Category:Mid High Fidelity

Application:Semi-Pro

Electronic:Solid State

Country of Manufacture:Japan

Release dates:1976 - 1980

Tracks:1/2 Rec/Play+1/4PB

Speeds: 7 1/2, 15

Max Reel Size("): 10.5"

Number of heads: 4

Dimension: 37 X 16 × 24.5" (940 × 410 × 620mm)

Head Composition: Permalloy

Head Configuration: Stereo

# Motors: 3

Auto Reverse?:No

Voltage(s): 100v Japan, 110-120v, 220-240v

Outputs: RCA

Frequency Response:30Hz - 28kHz at 15ips 30Hz - 24kHz at 7½ Ips (3dB)

Wow and Flutter:.04% At 15 Ips - .06% At 7½ Ips

Signal-to-Noise Ratio:100dB With DBX - 65dB Without

Sound quality rating:7 / 10

Long-term reliability rating: 8/ 10

Weight: 90.2 Lbs (41 Kg)

Additional Details

Description

Top-of-the-line of the final series of the 1970s, the Teac A-7400 RX outsold the very similar A-7300 RX by a significant margin as they were essentially the same but this one had an extra 1/4 track playback head. Teac Was just getting warmed up to the idea of taking one great design and multiplying it over many different models, with different features. The early 1980s X series decks would take that make as many models as you can concept to a new level. The A-7400 was very similar to the A-7300 (2 models), Teac/Tascam 25-2 and A-7300 RX as well as the Ampex ATR 700, but this was the best of the bunch.

Additional Info

Heads Four (record and playback both high density Permaflux)
Motors 
(3) Direct drive DC servo capstan motor, 2 x Eddy current induction reel motors
Tape speeds 
15 and 7½ ips
Frequency response 
(± 3dB) 15 ips 30Hz – 28kHz  7½ ips: 30Hz – 24kHz
Wow & flutter 
0.04% at 15 ips, 0.06% at 7½ ips

Signal to noise ratio 100dB with dBx; 65dB without dBx
Stereo separation  80dB with dBx; 50dB without dBx at 1kHz
Harmonic distortion  .4% with dBx; 0.8% without dBx at 1kHz normal operating level
Counter accuracy  ±1.5% at 15 ips, play mode
Rewind speed  150 seconds for 1800ft 10½ ” NAB reel
Inputs
4 x line: 100mV impedance 50KΩ
4 x microphone: 0.25mV impedance 600Ω
Outputs
2 line: 0.3V – load impedance10KΩ
Stereo headphones jack: 8Ω
Dimensions  Transport: 18½ x 18 × 11¾” (470 × 455 × 300mm)
Amplifier: 18½ x 8 × 12¼” (470 × 205 × 310mm)
Total: 37 x 16 × 24.5″ (940 × 410 × 620mm)
Weight
Transport: 61.6 lbs (28 kg)
Amplifier: 28.6 lbs (13 kg)
Total: 90.2 lbs (41 kg)

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