Monitor Section

Model 750

Another two controls are used to set the overall level of the main audio bus. They too should be set to the unity gain position except in special situations.

Limiter/Compressors

Astudio-quality limiter/compressor circuit is associated with each channel of the main audio bus. A push-button switch selects the off/on status; when the button is in the out position the limiter/compres- sors are not active. When the button is in the on (in) position, high signal levels on the main audio bus will be automatically attenuated.

Two green LEDs display the operating status of the limiter/compressors. They light whenever signal attenuation is taking place. Note that the limiter/compressor circuits operate independently for the left and right channels—they do not “track” together.

Main Outputs

Three stereo output connections are pro- vided on the back panel, providing access to the signals on the main audio bus. Main outputs 1 and 2 are configured for line

Figure 13. Detail of front panel showing monitor section

level. A button, located on the front panel, selects the output level for main output 3. Setting the button to the out position se- lects microphone level; the in position selects line level.

Talk Back

Two buttons allow voice signals to be connected to the setup direct output and the main and AUX output buses, creating a “talk back” function for cueing, slating, and setup use. The talk back audio source is the same as that used by the setup sec- tion’s voice recording function. Depending on the setting of configuration DIP switch 1, it is either the internal microphone or an externally-connected line-level audio source. The Model 750’s monitor speaker output is automatically muted whenever a talk back function is active.

Pressing and holding the talk back button labeled SETUP DIRECT OUT connects the voice audio source to the setup direct output connections. The voice audio signal will be added (summed) with what- ever signal is also present on the setup direct output; a voice or tone signal present on the setup direct output will not be muted while talk back is taking place.

Pressing and holding the talk back button labeled MAIN & AUX OUT connects the voice audio source to the main and AUX audio buses. The voice audio signal will be added (summed) with whatever signals are also present on the buses.

The monitor section assists the operator in obtaining the best performance from the Model 750. It controls the signals that are presented to the VU meters and associ- ated peak indicator lights, speaker output,

Model 750 User Guide	Issue 3, May 1997
Studio Technologies, Inc.	Page 31

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.