Fostex 750 manual Led

Page 36

Model 750

External Monitor Inputs: 2, stereo

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

Nominal Level, Input 1: +4dBu

Nominal Level, Input 2: –10 or +4dBu, selectable

Setup Section:

Record L+R Duration: 12 seconds, maximum

Record L Only, R Only Duration: 4 seconds, maximum

Record Audio Source: internal microphone or external line level, selectable

Single Tone Frequency: 400Hz or 1kHz, selectable

Basic Multi-Tone Frequencies: 1kHz reference, followed by 10kHz, 1kHz, 100Hz

Advanced Multi-Tone Frequencies: 1kHz reference, followed by 14 tones (15kHz-50Hz)

Setup Direct Output Level: +4dBu, nominal, adjustable, range –2 to +10dBu

Status LEDs: 4

Talk Back:

Connects voice audio source to setup direct and/ or main and AUX outputs

Record/Talk Back External Audio Input:

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

Level Range: –20 to +4dBu, adjustable

Metering: 2

Type: analog panel, VU scale, with signal peak

LED

Calibration: 0 VU = +4dBu, nominal, adjustable, range –2 to +10dBu

Peak LED: lights at 6dB below internal bus clip level

Illumination: 14 LEDs (7 per meter)

Polarity:

Input-to-output polarity maintained, except inversion on headphone output

AC Mains Requirement:

100, 120, or 220/240V, ±10%, factory configured; 50/60Hz; 40 watts maximum

Dimensions (Overall):

19.00inches wide (48.3cm)

3.49inches high (8.9cm)

9.50inches deep (21.4cm)

Mounting:

2 standard rack spaces

Weight:

14.0 pounds (6.4kg)

Specifications subject to change without notice.

Model 750 User Guide

Issue 3, May 1997

Studio Technologies, Inc.

Page 39

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Contents Model Table of Contents Foreword Introduction What This User Guide CoversSystem Features Model Installation Locating the Unit MountingAudio Inputs and Outputs Mic/Line InputsStereo Line Inputs Main OutputsConfigurable Outputs Setup Direct OutputAUX Output External Monitor Inputs Monitor OutputConnecting AC Mains Power Record/Talk Back External Audio InputConfiguration Model External Record/TB Audio Source VU Meter Calibration Model Configuration DIP Switches REC/TB Audio Source EXT / INTREC L ONLY/R only Disable / Enable Operation Model Model Detail of front panel showing setup section Setup Functions Model Model Master Output Detail of front panel showing master output sectionMonitor Section Detail of front panel showing monitor sectionModel Model Model Practical Operating Tips Technical Notes Model Specifications LED Appendix A-1. Basic Multi-Tone Sequence Appendix A-2. Advanced Multi-Tone Sequence Page Page Page Page Page

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.