Sound Devices 702 Portable Digital Audio Recorder

A Portable, High-Resolution Audio Recorder.

The two-channel 702 is a powerful file-based digital audio recorder. The compact device records and plays back audio to cost-effective, removable Compact Flash cards and/or external FireWire drives, making field recording simple and fast. It writes and reads uncompressed PCM audio at 16 or 24 bits with sampling rates between 32 kHz and 192 kHz. Compressed (MP3) audio playback is also supported.

The 702 implements a no-compromise audio path that includes Sound Devices’ next generation microphone preamplifiers. Designed specifically for high bandwidth, high bit rate digital recording, these preamps set a new standard for frequency response linearity, low distortion performance, and low noise.

Two-channels of Sound Devices next generation microphone preamps with phantom, limiters, and high-pass filters
Records to removable Compact Flash cards for convenient file audio file storage; can also record directly to external FireWire drives
AES3 (XLR) or AES3id (unbalanced AES on BNC) digital inputs and AES3id outputs
Programmable, sunlight-viewable LED level metering
WAV format, mono or poly files, uncompressed PCM audio
24-bit or 16-bit (with or without dither) and sampling at 32 kHz-192 kHz
MP3, MP2 decoder, 64 to 320 kb/s stereo file
FLAC file recording and playback
FireWire (IEEE-1394) port for high-speed computer access to the Compact Flash card
6-pin modular C. Link serial input and output for unit linking and control with the CL-1

Removable Li-on rechargeable battery compatible with Sony M- and L-mount Li-on batteries
10–18 VDC external input powers and charges on-board battery

Aluminum & stainless-steel chassis for exceptional durability and light weight

Specifications:

Sampling Frequency:
internal: 32, 44.1, 48, 48.048, 88.2, 96, 96.096, 176.4, 192 kHz; external: 32–192 kHz via word clock input

Internal Data Path and Processing:
32 bit, 192 dB dynamic range

A/D, D/A Converters:
24 bit, 192 kHz sample rate maximum

A/D Dynamic Range:
114 dB, A-weighted bandwidth
110 dB, 20 Hz – 22 kHz bandwidth

D/A Dynamic Range:
112 dB, A-weighted bandwidth
108 dB, 20 Hz–22 kHz bandwidth

Frequency Res. Mic or Line:
10 Hz–40 kHz, +0.1, -0.5 (gain controls centered), Fs 96 kHz

Equivalent Input Noise:
Mic: -133 dBu max (-135 dBV), 50 ohm source, A-weighted filter
Mic: -131 dBu max (-133 dBV) max, 50 ohm source, 20 Hz–20 kHz BW flat filter, gain fully up
Mic: -130 dBu max (-132 dBV), 150 ohm source, A-weighted filter
Mic: -128 dBu max (-130 dBV), 150 ohm source, 20 Hz–20 kHz BW flat filter, gain fully up

THD + Noise:
Mic: 0.004% max (1 kHz, 22 Hz–22 kHz BW, gain control down, -15 dBu input); line: 0.004% max (1 kHz, 22 Hz–22 kHz BW, gain control down, +16 dBu input)

Gain: (input dBu to -20 dBFS)
mic (normal gain mode): 25 to 70 dB; mic (low gain mode): 10 to 55 dB; line: -6 to 18 dB, 0.1 dB increments

Input Clipping Level:
Mic input: -5 dBu minimum (normal gain mode, gain control fully down); mic input: +10 dBu minimum (low gain mode, gain control fully down); line input: +26 dBu minimum (gain control fully down)

High-Pass Filters:
40, 80, 160, 240 Hz @ 12/18/24 dB/oct (all menu selectable)

Mic Powering:
(each XLR selectable): 48 V phantom through 6.8k resistors, 10 mA per mic available, menu-selected per channel in mic or line level positions

Mic Input Limiters:
analog (pre-A/D converter), dual-stage optocoupler and FET,
-4 dBFS threshold, 20:1 limiting ratio, 5 mS attack time, 200 mS release time

Analog Line Output Clipping Level:
+24 dBu minimum, 10k ohm load
Attenuation & Resolution 0 to 40 dB, 1 dB increments

I/O – Digital:
AES3-id 75 ohm, 0.5 V p-p, S/PDIF compatible with RCA adapter

File Storage:
Compact Flash CF type I, II, and + (microdrive) compatible, FAT32 formatted;

File Types, Playback and Record:
WAV, mono or polyphonic; MP2/MP3 @ 64, 96, 128, 240, or 320 kb/s stereo; FLAC mono and poly

File Utilities:
utilities: format, speed test, and repair utility for CF cards

Data Transfer / Control:
FireWire peripheral-mode,IEEE-1394a compliant, 6-pin FireWire, Windows 2000, XP, Mac OS X only: C. Link 6-pin modular input and output, RS-232 machine control, word clock, time code pass-through

Metering:
38-segment (2 x 19), sunlight-viewable, selectable peak, VU, or peak (with or without peak hold) with VU ballistics, variable brightness

Power requirements:
operating cell, removable 7.2 V (nominal) Sony M- or L-type Li-on, operational from 6 – 8 V; time code battery, 1.2 V AA nickel metal-hydride; power supply (external) 10–18 V, 1 A minimum, via locking 4-pin Hirose connector, use Hirose #HR10-7P-4P (DigiKey# HR100-ND) for locking mating DC connector; pin-4 = (+), pin-1 = (-) or pin-3 = (+) and pin-2=(-).

Environmental:
operation and storage: ambient temperature 5–55° C, relative humidity (non-condensing) <80%

Other:
LCD Display 202 x 32 pixel, extended temperature, 1-bit backlit display; tone oscillator 100 Hz–10 kHz, variable output, assigned to tracks or outputs (menu-selectable);

Dimensions and Weight:
45 mm x 209 mm x 125 mm (H x W x D) 1.8” x 8.2” x 4.9” mass unpackaged: 1.0 kg, (2.1 lbs) without battery

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Tags: 24 Bit, firewire, FLAC, High Definition, location, recorder, Sound Devices

This entry was posted on Friday, April 17th, 2009 at 2:27 pm and is filed under 2 Track Stereo, Portable Recorders. You can follow any responses to this entry through the RSS 2.0 feed.