Fostex 750 manual Model

Page 25

Model 750

steadily when recording is taking place, flashing on and off during the final 2 sec- onds of recording time. To ensure that an existing recording will not accidentally be erased, you must press and hold a record button for 2 seconds before recording will begin. You must continue to press the button during the entire time you want to record, releasing the button only when you want to stop recording.

Should you attempt to record longer than the maximum allowable time, recording will automatically stop, as evidenced by the record status LED turning off, and the monitor speaker output “un-muting.” Only by releasing the record button, then press- ing and holding it for 2 seconds will re- cording begin again. Once you have com- pleted recording you needn’t worry about “losing” the information—the memory circuitry will hold it for at least 10 years!

You should be aware that the ultimate ability to record voice segments is con- trolled by means of configuration DIP switches 2 and 3, located on the lower right corner of the front panel. Switch 2 enables and disables the recording of the L+R segment; switch 3 applies to both the L Only and R Only segments. Recording will not take place if a function is disabled, no matter how long you press and hold its button!

There may be special cases where you don’t want to record and playback all three voice segments, wanting only one or two of them to be active. To facilitate this an “erase” function is provided. A voice segment is “erased” by pressing and holding its associated record button until recording begins, as evidenced by the record LED lighting, then immediately releasing the button. Technically, the

software that controls the setup section interprets any recording of less than 1 second as an erase indication. During playback, a voice segment that has been erased will be skipped.

An operational example may be useful: Once upon a time a Model 750 was used to “split feed” two separate news net- works. The L Only segment was used to convey information relevant to network 1, and the R Only segment was used to convey information specific to network 2. A message recorded on the L+R segment was not desired, as it would have been sent to both networks. So the L+R seg- ment was erased by pressing and holding the record L+R button until recording began, and then the button was released immediately. The desired messages were recorded onto the L Only and R Only segments, which were the only ones that played back. The “live shot” went so smoothly that the field technician was promoted, moved to New York City, and is now earning those big bucks!

The audio source for the recording is either the internal microphone, located between and a little above the VU meters, or an externally-connected source. Con- figuration DIP switch 1 selects which source is active.

Experience will teach you how to achieve the best record audio quality. While conve- nient, the front panel microphone is prone to noise pickup. Speaking closely into the front-panel microphone will result in the best signal-to-noise ratio. An external audio source, such as an amplified signal coming from a noise-canceling headset, will lead to a more “high-fi” recording.

Issue 3, May 1997

Model 750 User Guide

Page 28

Studio Technologies, Inc.

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Contents Model Table of Contents Foreword What This User Guide Covers IntroductionSystem Features Model Installation Mounting Locating the UnitAudio Inputs and Outputs Mic/Line InputsMain Outputs Stereo Line InputsSetup Direct Output Configurable OutputsAUX Output Monitor Output External Monitor InputsRecord/Talk Back External Audio Input Connecting AC Mains PowerConfiguration Model External Record/TB Audio Source VU Meter Calibration Model REC/TB Audio Source EXT / INT Configuration DIP SwitchesREC L ONLY/R only Disable / Enable Operation Model Model Detail of front panel showing setup section Setup Functions Model Model Detail of front panel showing master output section Master OutputDetail of front panel showing monitor section 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.