|SOUND DEVICES 702 HIGH-RESOLUTION AUDIO RECORDER (see also 702T)|
|702 Portable Digital 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, 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.
No other recorder on the market matches its size or feature set. In addition, its learning curve is quite short—powerful does not mean complicated. While the 702 is a very capable recorder by itself, it truly excels when used in conjunction with an outboard audio mixer such as Sound Devices’ own 442 or 302.
Its Compact Flash storage is a highly-reliable industry standard. The removable, rechargeable battery is a standard Sony-compatible Li-ion camcorder cell. The Compact Flash card appears as a removable storage devices when connected via the FireWire port to Windows or Mac OS computers.
• Two-channels of Sound Devices next generation microphone preamps with phantom, limiters, and high-pass filters
Internal Data Path and Processing:
A/D, D/A Converters:
A/D Dynamic Range:
D/A Dynamic Range:
Frequency Res. Mic or Line:
Equivalent Input Noise:
THD + Noise:
Gain: (input dBu to -20 dBFS)
Input Clipping Level:
Mic Input Limiters:
Analog Line Output Clipping Level:
I/O – Digital:
Data Transfer / Control:
Dimensions and Weight:
For more information on this product, see the Sound Devices homepage.
|Calculating your available recording time |
If you are recording stereo, at the 16-bit 44.1 kHz resolution of CDs, figure that 1 GB of memory on a hard drive or a CF (Compact Flash card) gives you an hour and a half of recording time.
If you change the "word length" from 16-bit to 24-bit (to increase the dynamic range of the recording), 1 GB will give you an hour of recording time.
Doubling the sampling frequency to 88.2 kHz (or 96 kHz) to "increase the resolution" halves the available recording time to a half hour. Doubling it again to 176.4 kHz (or 192 kHz) cuts it in half again, to 15 minutes.
These times assume that a 2-track "stereo" recording is being made. A "mono" one-track recording doubles these times, a four-track recording halves them.
© 1997-2015 Posthorn Recordings
|Most recent revision January 1, 2015|