Tascam 424 MK II

Daten[Bearbeiten]

Allgemein

  • Hersteller: Tascam Professional Division Teac
  • Modell: Portastudio 424 MK II
  • Typ: 4-Kanal Symul-Sync Kassetten Tape Deck mit Mischpult
  • Baujahre: 1996 - 1999
  • Hergestellt in: Japan
  • Farbe: Hellgrau
  • Neupreis ca.: 1'400 DM


Technische Daten

  • 4 XLR mic preamps
  • 6 channel strips & 1 stereo input
  • 3 band EQ with sweepable mid on each channel
  • 2 effect sends
  • 3 3/4 ips high tape speed, and 1 7/8 ips normal speed
  • dbx noise reduction
  • Electronic transport for better tape handling
  • Individual track outputs
  • Separate I/O for mixdown deck connection & monitoring
  • Optional RC-30P punch-in pedal

The Tascam 424 MKII Portastudio is a 4-track "Multitrack Master" cassette tape recorder and a full-function mixer with 8 inputs/stereo outputs combined into a single workstation. The 424 MKII records on readily available standard (Philips) Compact Cassette tape, high bias Type II. The recorder has 4 tracks while the mixer has a stereo output; however, using the DIRECT feature you can record on any or all of the 4 tracks at one time. The 424 MKII's dbx Noise Reduction virtually eliminates unwanted tape noise. A special SYNC feature turns off the dbx on track 4 separately, making it possible to record and play back the MIDI sync tones or SMPTE/EBU time code without being affected by the dbx encode/decode. This ensures that the sync tones/code are recorded and played back without unnecessary processing. With proper operating techniques, it is not necessary to leave a guard band between music and sync tone tracks because of the low crosstalk of the TASCAM heads.

The transport controls of the 424 MKII are microprocessor operated, allowing highly reliable functions that make the unit easier to use:

  • A three-point autolocator (MEMO/LOC 1 and 2 and RTZ) lets the tape STOP or PAUSE at, or PLAY from preset points.
* REPEAT allows a section to played over and over between the MEMO 1 and MEMO 2 points.
* REHEARSAL programs the 424 MKII to repeat a punch-in/out sequence as many times as you wish, and AUTO IN/OUT actually executes it on tape exactly as you "previewed" in REHEARSAL
* Two tape speeds offer HIGH for greater fidelity, and NORMAL for compatibility with standard cassette tapes.
* The tape speed can be increased or decreased with the PITCH CONTROL dial in both playback and record, to match pitch or for special effects.

MECHANICAL CHARACTERISTICS

Tape: Compact Cassette (C-30 to 90), High-Bias (CrO2) 

Track Format: 4-track/4-channel
Head Configuration: 4-channel record/play (permalloy) x 1
4-channel erase (ferrite) x 1
Motor: DC servo motor x 1
Tape Speed: Switchable two speeds: 9.5 cm/sec. (3-3/4 ips) and 4.8 cm/sec. (1-7/8 ips), +/- 1%
Pitch Control: +/- 12% (approx.)
Wow and Flutter: 0.06% WRMS at 4.8 cm/sec., 0.05% WRMS at 9.5 cm/sec.
Fast Winding Time: 120 sec. (approx.) with C-60
Dimensions (WxHxD): 412 x 122 x 381 mm (16-1/4" x 4-13/16" x 14-15/16")
Weight: 4.9 kg (10-13/16 lbs.)

ELECTRICAL CHARACTERISTICS

Mixer Section

MIC/LINE INPUT, Ch.1-4 (XLR type connector x 4) 

Input Impedance: 3.6k ohms
Nominal Input Level: -60 dBV (1mV) (MIC position)
-20 dBV (0.1 V) (LINE position)
Maximum Input Level: +3 dBV (1.4 V) at Trim Min.

MIC/LINE INPUT, Ch.1-4 (1/4" phone jack x 4) 

Input Impedance: 5.6k ohms
Nominal Input Level: -50 dBV (3mV) (MIC position)
-10 dBV (0.3 V) (LINE position)
Maximum Input Level: +10 dBV (3 V) at Trim Min.

STEREO INPUT, Ch.5-8 (1/4" phone jack x 4) 

Input Impedance: 10k ohms
Nominal Input Level: -10 dBV (0.3 V)
Maximum Input Level: +10 dBV (3 V)

SUB INPUT (RCA jack x 2) 

Input Impedance: 10k ohms
Nominal Input Level: -10 dBV (0.3 V)
Maximum Input Level: +10 dBV (3 V)

LINE OUTPUT (RCA jack x 2) 

Output Impedance: 100 ohms
Nominal Output Level: -10 dBV (0.3 V)
Minimum Load Impedance: 2k ohms

EFFECT 1 SEND (1/4" phone jack) 

Output Impedance: 100 ohms
Nominal Output Level: -10 dBV (0.3 V)
Minimum Load Impedance: 2k ohms

EFFECT 2 SEND/TAPE CUE OUT (1/4" phone jack) 

Output Impedance: 100 ohms
Nominal Output Level: -10 dBV (0.3 V)
Minimum Load Impedance: 2k ohms

TAPE OUTPUT (RCA jack x 4) 

Output Impedance: 100 ohms
Nominal Output Level: -10 dBV (0.3 V)
Minimum Load Impedance: 2k ohms

MONITOR OUTPUT (RCA jack x 2) 

Output Impedance: 690 ohms
Nominal Output Level: -10 dBV (0.3 V)

PHONES (1/4" stereo phone jack x 1) 

Nominal Load Impedance: 30 ohms
Maximum Output Level: 100 mW (approx.)

Equalizer

HIGH (Shelving): 10 kHz, +/- 10 dB 

MID (Parametric): 250 Hz to 5 kHz, +/- 14 dB
LOW (Shelving): 100 Hz, +/- 10 dB

Frequency Response 

MIC INPUT to LINE OUTPUT: 20 Hz to 20 kHz, +/- 3 dB
LINE INPUT to LINE OUTPUT: 20 Hz to 20 kHz, +/- 2 dB
LINE INPUT to EFFECTS OUTPUT: 20 Hz to 20 kHz, +/- 2 dB
LINE INPUT to PHONES: 40 Hz to 20 kHz, +/- 3 dB

Signal-to-Noise Ratio (20 Hz to 20 kHz, B.P.F. inserted)

1 MIC INPUT to LINE OUTPUT: 65 dB (at a nominal input level of -60 dBV) 

4 MIC INPUTS to LINE OUTPUT: 60 dB (at a nominal input level of -60 dBV)
1 LINE INPUT to LINE OUTPUT: 76 dB (at a nominal input level of -10 dBV)
4 LINE INPUTS to LINE OUTPUT: 70 dB (at a nominal input level of -10 dBV)

Distortion

1 MIC INPUT to LINE OUTPUT: 0.05% (at 1 kHz, 15 dB above nominal input level with 30 kHz low-pass filter inserted) 

1 LINE INPUT to LINE OUTPUT: 0.04% (at 1 kHz, nominal input level with 30 kHz low-pass filter inserted)
Crosstalk: 55 dB (at 1 kHz, nominal input level with 30 kHz low-pass filter inserted)

Recorder Section

Record/Play channels: 4/4 

Noise Reduction: dbx TYPE II
Frequency Response (overall):
40 Hz to 16 kHz, +/- 3 dB at 9.5 cm/sec.
40 Hz to 10 kHz, +/- 3 dB at 4.8 cm/sec.

Signal-to-Noise Ratio (overall): UNWTD (20 Hz to 20 kHz)/IHF A WTD 

HIGH: 55 dB/58 dB (without dbx); 90/95 dB (with dbx)
NORMAL: 54 dB/56 dB (without dbx); 88/93 dB (with dbx)

Total Harmonic Distortion: 1.0% (1 kHz) 

Crosstalk (Channel Separation): 55 dB or better
Erasure: 65 dB or better (at 1 kHz, B.P.F. inserted)

Other Power Requirements

USA/CANADA: 120 V AC, 60 Hz 

U.K./EUROPE: 230 V AC, 50 Hz
AUSTRALIA: 240 V AC, 50 Hz
Power Consumption: 21 W


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  • Bild: Tascam Portastudio 424 MK II


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