Setup Functions

Model 750

may consist of a “true” stereo signal, a dual-channel monaural signal, or one or two independent monaural signals.

Associated with the left channel input are two buttons, labeled OUT L and OUT R. When both buttons are in the off (out) position, the left input signal can’t be connected to the left or right output bus. (The final connection to the buses actually occurs by means of the bus assignment buttons.) Placing the OUT L button in the on (in) position allows the left input signal to be connected to the left output buses; OUT R allows the left input to be con- nected to the right output buses. Placing both buttons to the on (in) position allows the left input signal to be connected to both the left and right output buses. Two buttons are associated with the right channel input and function in the same manner.

The number of routing possibilities may seem almost endless…but you math experts know there are actually only 16! If you spend a bit of time thinking about the routing you’ll see how a variety of stereo and monaural inputs can be routed and combined to create virtually any desired stereo or monaural output.

Bus Assignment

Signals from the left/right assignment buttons are sent to the main and AUX bus assignment buttons. These two buttons operate in the same fashion as described for the mic/line input channels. The main button assigns the line input signals to the main bus. The AUX button assigns the line input signals to the AUX mix bus and enables the AUX interrupt control bus.

The Model 750’s setup section will be a “new animal” to most operators, but is really quite simple and intuitive to under- stand and use. (The simple and intuitive part will become more obviously after you read the following section!)

The setup section allows the recording and playback of voice identification sig- nals, along with the generation of sine- wave audio tones.

Setup Direct Output and Bus

Assignment

A separate stereo output is provided on the back panel, giving direct access to the voice and tone signals generated by the setup section. Whenever one of the setup section’s voice identification or tone functions is active, the signal generated will always appear on the setup direct output. Only if the bus assignment buttons are activated will the setup signals be connected to the main and AUX audio buses. This allows the buses to continue to be used for normal audio signals, even while voice identification or sine-wave tones are being generated. What a con- cept—your entire audio mixer doesn’t have to be “tied-up” so you can generate a 1kHz tone for some geek at a TV station in North Dakota. (The author is living dangerously—he has family in Minot!)

Voice Recording

Three push-button switches allow you to record custom voice identification mes- sages; 12 seconds maximum for the L+R segment, 4 seconds maximum each for the L Only and R Only segments. One status LED, red in color, is associated with the three record buttons. The LED will light

Model 750 User Guide	Issue 3, May 1997
Studio Technologies, Inc.	Page 27

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.