Fostex 750 manual Model

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Model 750

front panel, allow the interrupt function to be configured; one switch selects whether the monitor speaker output will be inter- rupted by the AUX signal, the other whether the headphone output will be interrupted.

Configurable Outputs

Four monaural, balanced, line-level out- puts can serve in a wide range of installa- tion-specific applications. DIP switches, located on the back panel, are used to select from the five available signal sources: main output left, main output right, AUX output left, AUX output right, and mic/line input channel direct. The DIP switches can be set to provide additional stereo outputs, create monaural outputs from the main or AUX outputs, or to pro- vide direct outputs from the mic/line input channels.

Monitor Section

Reminiscent of much larger audio con- soles, the Model 750’s monitor section gives the operator an extensive set of resources. Separate stereo outputs and level controls are provided for connection to a monitor amplifier and headphones. In addition to monitoring the main and AUX audio buses, provision has been made for monitoring two external audio sources. These stereo inputs are intended to be connected to off-air, microwave, or satel- lite receivers. External Monitor Input 1 is compatible with “+4” signals, while Exter- nal Monitor Input 2 can be set, using a front-panel DIP switch, for “–10” or “+4” compatibility.

Multiple sources can be simultaneously selected for monitoring. This can prove useful by allowing, for example, an opera- tor to simultaneously monitor a local mix

and an externally-provided mix-minus signal. A mono function allows the moni- tored audio source to be checked for phase cancellation problems and accept- able “sum-to-monaural” performance.

The AUX interrupt mode allows monitoring of selected input channels and the setup section without interfering with normal operation of the main audio bus. For operator assistance, the meters can be configured to monitor the AUX bus when- ever the AUX interrupt mode is active.

Mechanical VU-type meters, along with peak level LED indicators, provide a “user- friendly” indication of audio-signal levels. Fanatics for addressing the details, Studio Technologies has even eliminated the issue of burned-out meter-scale illumina- tion by implementing a solid-state, LED- based lighting scheme.

Setup Section

Unique to the Model 750 are the features provided by the setup section, the high- light being the ability of the operator to record and playback three voice identifica- tion segments. The Left+Right segment allows a voice message of up to 12 sec- onds in length to be recorded, with play- back going to the left and right output channels. The Left Only and Right Only segments allow recording of up to 4 sec- onds each, with playback going only to their respective channels.

The voice segments can prove useful, allowing the facilities that receive the vehicle’s signal (generally provided by microwave or satellite links) to quickly “learn” more about the origin of the trans- mission. Information such as vehicle identity, physical location, the names of technical and on-air personnel, mobile

Model 750 User Guide

Issue 3, May 1997

Studio Technologies, Inc.

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Contents Model Table of Contents Foreword Introduction What This User Guide CoversSystem Features Model Installation Audio Inputs and Outputs Locating the UnitMounting 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.
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