Model 750

Specifications

General Audio Parameters:

Frequency Response: 20Hz-20kHz, ±0.5dB, stereo line in/main out 1

Distortion (THD+N): 0.04%, measured at 1kHz, mic in/main out 3

S/N Ratio: 80dB, referenced to +4dBu, mic in/ main out 3

Connectors:

Mic/Line, Stereo Line: 3-pin XLR-type, female (pin 2 high)

Main Out 3: 3-pin XLR-type, male (pin 2 high)

All Other Audio: ¼-inch 3-conductor phone jacks

AC Mains: 3-blade IEC-type

Mic/Line Inputs: 4

Type: balanced, transformer-coupled

Impedance: mic 1k ohms, line 9k ohms

Common Mode Rejection Ratio: 68dB @ 60Hz (typical)

Level Range:

Mic: –70 to –10dBu; Line: –30 to +30dBu Range specified to give +4dBu output level, master level controls set to unity gain position

Microphone Power: +48V phantom-type

Low-Cut Filter: –3dB at 85Hz, 18dB/octave slope

Status LED: bi-color, signal present/peak

Pan Type: constant energy

Pan Attenuation: 60dB, nominal

Stereo Line Inputs: 2

Type: electronically balanced, direct-coupled, compatible with balanced or unbalanced signals

Impedance: 24k ohms

Common Mode Rejection Ratio: 100dB @ DC and 60Hz, 70dB @ 20kHz, 62dB @ 40kHz, typical

Main Audio Bus Limiter/Compressor: 2

Type: single-knee, VCA-controlled, non-tracking

Threshold: +10dBu, nominal (6dB above nominal output level)

Attack Time: 2mSec, nominal

Release Time: 100mSec, nominal

Slope: 5:1, nominal

Status LED: 2, limiter/compressor active

Outputs — Main 1, Main 2, AUX, Configurable, and Setup Direct:

Type: electronically balanced, capacitor-coupled, intended to drive balanced or unbalanced loads of 600 ohms or greater

Source Impedance: 50 ohms, nominal

Nominal Level: +4dBu (Setup Direct Output adjustable, range –2 to +10dBu)

Maximum Level: +27dBu into 10k ohms, +26dBu into 600 ohms

Main Output 3:

Type: balanced, transformer-coupled, intended to drive balanced or unbalanced loads of 2k ohms or greater

Source Impedance: mic 200 ohms, line 170 ohms, nominal

Nominal Level: mic –36dBu, line +4dBu, selectable

Maximum Level: +21dBu into 10k ohms

Monitor Output:

Type: electronically balanced, capacitor-coupled, intended to drive balanced or unbalanced loads of 600 ohms or greater

Source Impedance: 50 ohms, nominal

Nominal Level: –2dBu, with monitor level control @ 100%

Maximum Level: +21dBu into 10k ohms, +20dBu into 600 ohms

Nominal Level: +4dBu (–8 to +10dBu acceptable)

Status LED: 2, bi-color, signal present/peak

Headphone Output:

Compatibility: intended for connection to head- phones with impedance of 100 ohms or greater

Maximum Voltage: 8Vpp, 100 ohm load

Issue 3, May 1997

Model 750 User Guide

Page 38

Studio Technologies, Inc.

Page 35
Image 35
Fostex 750 manual Specifications

750 specifications

The Fostex 750 is a premium closed-back headphone that has garnered attention for its combination of advanced technology, comfort, and sound fidelity. Designed primarily for studio applications, the Fostex 750 delivers an exceptional listening experience that caters to both professionals and audiophiles alike.

One of the main features of the Fostex 750 is its dynamic driver technology. The headphones are equipped with large 50mm titanium-coated drivers that provide a powerful and clear sound reproduction. This driver configuration is engineered to deliver a wide frequency response, ranging from deep bass to sparkling highs, ensuring that every detail of the audio is captured. With an impedance of 25 Ohms, the headphones are highly efficient and can be easily driven by a variety of devices, including portable music players and digital audio converters.

Comfort is another highlight of the Fostex 750. The headphones feature plush ear pads made from soft polyurethane, which provide excellent cushioning for extended listening sessions. The adjustable headband offers a customizable fit, allowing users to achieve an optimal acoustic seal that enhances sound isolation. This is particularly beneficial in studio environments, where external noise can interfere with critical listening.

In terms of build quality, the Fostex 750 boasts a robust yet lightweight design. The combination of high-quality plastics and metal components contributes to its durability, while the foldable structure makes it portable and convenient for travel. This practicality is further enhanced by the detachable cable, which allows for easy replacement in case of wear.

Another notable technology integrated into the Fostex 750 is the use of new acoustic engineering principles. These headphones feature a closed-back design that minimizes sound leakage and provides an immersive listening experience. This design is complemented by the innovative bass reflex system, which enhances low-end response without compromising clarity in other frequency ranges.

Overall, the Fostex 750 is an impressive headphone that combines advanced sound technology, comfort, and durability. Its dynamic drivers, ergonomic design, and acoustic engineering make it an ideal choice for both professional monitoring and casual listening. Whether you are mixing in a studio or enjoying music on the go, the Fostex 750 delivers an unmatched audio experience that is sure to satisfy even the most discerning listeners.