Model 750

•With the monitor stereo/mono button set to stereo, and neither the speaker nor the headphone outputs being interrupted by the AUX interrupt func- tion, the left channel of the selected monitor source is connected to the left meter; the right channel is connected to the right meter.

•Whenever the speaker output, the headphone output, or both the speaker and headphone output are interrupted using the AUX interrupt function, the signals on the AUX audio bus are auto- matically connected to the meters; left channel to the left meter, right channel to the right meter.

•When the stereo/mono button is in the mono (in) position, the left and right monitor signals, being either the normal source or AUX interrupt, are added (summed), attenuated by 6dB, and sent to both the left and right meters.

Speaker Output

As part of the Model 750’s monitor sec- tion, a stereo “speaker” output is pro- vided, along with an associated level control and status LED indicator. The speaker output is actually line-level, not speaker level. It’s designed to be con- nected to an audio power amplifier and associated loudspeakers, or “amplified” speakers that contain internal power amplifiers.

The signal source for the speaker output is either the selected monitor source or, when interrupted by the AUX interrupt function, the AUX audio bus. If configura- tion DIP switch 6 is set to the up (on) position, any signal assigned to the AUX audio bus will automatically replace the normal monitor source. The LED labeled

AUX INT will light, indicating that the nor- mal monitor source is being interrupted by the AUX signal.

The speaker output is muted whenever a voice message is being recorded, or one of the talk back functions is active. The speaker mute limits the amount of sound that can get into the microphone, and can prevent the occurrence of acoustic feed- back.

Headphone Output

A separate stereo headphone output is provided, along with an associated level control and status LED indicator. The phones output is designed to work well with virtually any of the contemporary medium and high-impedance headphones. Sony MDR-7056s were used during the design of the Model 750; their high sensi- tivity made them go “way loud!” While a bit “bright” in the high-end for our taste, their comfort and fine design make them a good choice for use with the Model 750.

If configuration DIP switch 7 is set to the up (on) position, any signal assigned to the AUX audio bus will automatically replace the normal monitor source. The LED la- beled AUX INT will light, indicating that the normal monitor source is being interrupted by the AUX signal. Unlike the speaker output, the phones output is never muted.

Warning: Protect your ears! The Model 750 is capable of driving head- phones to extremely high sound pres- sure levels. Hearing experts advise against continuous extended play, especially at high levels. Polka music has been found to be especially dan- gerous, so please be careful.

Issue 3, May 1997

Model 750 User Guide

Page 34

Studio Technologies, Inc.

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Fostex 750 manual Model
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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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