Sudio Technologies Model 742 mikser za lokacijsko snimanje za radio/TV stanice

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Informacije o proizvodu

The Model 742 Audio Mixer is expressly designed for use in electronic-news-gathering (ENG) vehicles, small production trucks, and other specialized mobile broadcast applications. Many other audio production applications can also be supported. Model 742 features include four mic/line inputs, four line inputs, two output buses, LED level metering, and flexible monitoring. The Model 742 was specifically designed as a dual-channel audio mixer, rather than as a typical stereo device. This approach makes it excellent for use in "dual-path" on-air applications.

The Model 742 is targeted for use by operators with numerous audio sources that need to be quickly and reliably adjusted and routed to create one or two independent audio mixes. In these days of operators having too many tasks to handle, and too little time to do them, the Model 742 is a refreshing combination of performance and simplicity. Using their experience in mobile broadcast applications, the engineers at Studio Technologies were able to design the Model 742 to include all the crucial features required to meet the needs of fast-paced news-gathering operations, while still providing the operator with an easy-to-use product.

The hallmarks of the Model 742 are application flexibility, simplicity in use, audio quality, and long-term reliability. A number of internal configuration "jumpers" allow the unit's performance to be tailored to meet the needs of specific installations. The carefully selected feature set ensures that the Model 742 will be a "team player" when it is integrated into an audio system. While there's flexibility on the inside, the operator is presented with an easy-to-use set of front-panel controls and indicators—the operator never has to access the back panel to operate the unit. In this way the goal of delivering successful on-air and production audio, day-after-day, can best be achieved. The Model 742's audio quality is "pro" throughout. The components were carefully selected to deliver low-noise, low-distortion performance.

Long-term reliability was also part of the Model 742's design criteria. To that end the unit's enclosure is made of steel, combining strength with effective RF rejection. On the inside, all components are mounted on an FR4 (fiberglass-based) circuit board assembly.

Features:

  • Four mic/line and four line-only inputs
  • Setup oscillator with dedicated output
  • Studio-quality compressors
  • Internal power supply
  • Flexible monitor section
  • 10-segment LED meters
  • All operator controls on front panel
  • Single rack-space mounting

Specifications:

General Audio Parameters:
Frequency Response: 20 Hz to 20 kHz, ±0.5 dB, mic/line in to main outs
Distortion (THD+N): 0.03 %, measured at 1 kHz, +4 dBu, mic/line in to main outs
S/N Ratio: 74 dB, referenced to +4 dBu, mic/line in to main outs, 22 Hz to 22 kHz

Mic/Line Inputs: 4
Input Sensitivity: switch selectable for microphone or live-level signals; 43 dB line input "pad" implemented using sealed bifurcated contact telecom relays
Phantom Power: 12 Vdc, nominal, meets IEC 61938 P12 standard
Operating Level Range: mic input position: –76 to –8 dBu; line position: –32 to +28 dBu. Range specified to give +4 dBu on main outs, master level controls set to unity gain.
Type: electronically balanced
Impedance: mic position 1.3 k ohms, line position 15 k ohms
Common Mode Rejection Ratio: 74 dB @ 60 Hz, 73 dB @ 40 kHz (typical), mic position, ref +4 dBu on main outs
Status LED: dual-color, displays signal present and peak

Line Inputs: 4
Operating Level Range: –14 to +28 dBu. Range specified to give +4 dBu on main outs, master level controls set to unity gain.
Type: electronically balanced
Impedance: 24 k ohms, nominal
Common Mode Rejection Ratio: 85 dB @ 60 Hz, 85 dB @ 40 kHz (typical), ref +4 dBu on main outs
Status LED: dual-color, displays signal present and peak

Compressors: 2
Function: controls dynamic range of output buses 1 and 2
Type: single-knee, VCA-controlled
Slope: 5:1
Threshold: configurable, choices are: 6 dB over nominal (+10 dBu on main outs, factory default); 2 dB over nominal (+6 dBu on main outs); disabled
Attack Time: 2 ms
Release Time: 100 ms
Status LEDs: 2, compressor active

Main Outputs: 2
Type: electronically balanced, capacitor-coupled, intended to drive balanced or unbalanced loads of 600 ohms or greater
Source Impedance: 50 ohms, nominal
Nominal Level: +4 dBu
Maximum Level: +26 dBu into 10 k ohms, +25 dBu into 600 ohms

Monitor Outputs: 2
Signal Sources: output buses 1 and 2
Type: electronically balanced, capacitor-coupled, intended to drive balanced or unbalanced loads of 600 ohms or greater
Source Impedance: 50 ohms, nominal
Nominal Level: configurable, choice are: +6 dBu, with monitor level control @ 100%, mode configured for POST level control; –10 dBu when configured for PRE –10; +4 dBu when configured for PRE +4
Maximum Level: +26 dBu into 10 k ohms, +25 dBu into 600 ohm

Headphone Output:
Signal Sources: output buses 1 and 2 ("post" monitor level controls)
Type: stereo, configured to drive stereo headphones through 100 ohm series resistors
Compatibility: intended for connection to headphones with impedance of 100 ohms or greater
Maximum Voltage: 8 Vpp, 100 ohm load

Reference Tone:
Frequency and Wave Form: 400 Hz nominal, sine wave (technician can revise to 1 kHz)
Direct Output Level: +4 dBu, nominal, adjustable over –1/+3 dB range
Direct Output Type: electronically balanced, capacitor-coupled, intended to drive balanced or unbalanced loads of 600 ohms or greater
Direct Output Source Impedance: 100 ohms, nominal

Meters: 2
Function: displays level of output buses 1 and 2
Type: 10-segment LED, modified VU ballistics

Connectors:
Mic/Line and Line Inputs: 3-pin female XLR-type
Main Outputs: 3-pin male XLR-type
Reference Tone Direct Output, Monitor Outputs, Headphone Output: ¼-inch 3-conductor phone jacks
AC Mains: 3-blade, IEC 320 C14-compatible (mates with IEC 320 C13)

AC Mains Requirement: 100, 120, or 220/240 volts, ±10%, factory configured; 50/60 Hz; 0.2 A maximum @ 100 and 120 volts, 0.1 A maximum @ 220/240 volts

Mains Fusing:
Type: 5 x 20 mm, time-lag
Rating: 0.2 A for 100 and 120 volt AC mains, 0.1 A for 220/240 volt AC mains

Dimensions (Overall):
19.0 inches wide (48.3 cm)
1.72 inches high (8.9 cm)
9.5 inches deep (24.1 cm)

Mounting: one space in a standard 19-inch rack

Weight: 8.5 pounds (3.9 kg)

Product Code: SUDYArray

 

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