MOC Calibration Procedure

The MMR-8 has a built-in 1 kHz oscillator to check that the output levels are calibrated. To check the output levels, select Setup Menu 530 and select the 1 kHz setting. Press STO to turn on the internal oscillator. Make sure no tracks are selected in the Input mode, and then press the Play switch. Measure the output levels and verify that they match the calibration settings (+4 dBu nominal=1.228Vrms, measured at XLR pin 2(+) and 3(-) pins). If calibration is required continue to the MOC Calibration Procedure.

Follow this step-by-step procedure to calibrate the MMR-8 Output Converters (MOC).

1.Turn off power and remove the top cover of the MMR.

2.Connect the audio analyzer input to the Output connector at the rear of the MMR.

3.Turn on the MMR. Wait for the software to load.

4.Generate the MOC calibration tone, a 1 kHz, -20 dBFS (of the digital bus) sine wave. To do this, Press SETUP, and go to menu 530 by turning the Wheel. Press TRIM then turn the Wheel to select the 1 kHz tone. Press STO to enable generation of the tone. Make sure no tracks are selected in the Input mode. Press the PLAY (>) switch to start tone generation.

5.Set up the audio analyzer input to measure the output level on Output channel 1. Standard Calibration level is digital full scale = +24 dBu. Pot adjustment range is digital full scale = +17 dBu to +25 dBu.(If there are special level requirements, those levels must be substituted for the levels in the following steps.)

6.Locate the MIC and MOC card cage. Note on its cover that the Output board is identified, as well the pot associated with each channel.

7.Using a plastic tweaker (supplied with the MMR-8), adjust the Output Ch1 pot to +4 dBu, +/-0.025 dB (=-20 dBFS.)

8.Move the audio analyzer input to the next MMR output channel. Repeat step 7. Continue until all 8 channels are calibrated.

End of the analog output level calibration procedure.

Tascam MMR-8 Owner’s Manual • Chapter 6 • Maintenance and Service

MMR-8

MMR-8 specifications

The Tascam MMP-16 and MMR-8 are two innovative products designed to meet the specialized needs of audio professionals, offering advanced features and capabilities suitable for various recording and playback applications.

The Tascam MMP-16 is a versatile audio router and mixer that excels in different environments, from live sound to studio recording. One of its primary features is the 16-channel configuration, allowing for significant flexibility in signal routing. The MMP-16 supports multiple audio formats, including analog signals, making it adaptable to a wide range of setups. It boasts high-quality AD/DA conversion, delivering excellent audio fidelity and low latency performance.

Additionally, the MMP-16 is equipped with comprehensive digital processing capabilities, including EQ and dynamics processing on each channel. This makes it ideal for both mixing live performances and preparing recordings for post-production. The unit's user-friendly interface includes an intuitive display and physical controls that streamline operation, making it easy for both novice and experienced engineers to navigate.

On the other hand, the Tascam MMR-8 is a robust multi-track digital audio recorder that offers exceptional reliability for professionals who require high-quality audio capture. This 8-channel recorder shines in its ability to handle various digital audio formats, ensuring compatibility with different workflows. One standout feature of the MMR-8 is its solid-state recording technology, which enhances durability and reduces the risk of data loss, a crucial aspect in high-stakes recording environments.

The MMR-8 also provides comprehensive onboard monitoring options, allowing users to assess audio quality in real time. Its extensive connectivity options include digital and analog inputs and outputs, facilitating seamless integration with other studio equipment and live sound systems. The data management capabilities of the MMR-8 make it easy to organize and retrieve recordings, while its compact design ensures portability without compromising on performance.

Both the MMP-16 and MMR-8 showcase Tascam's commitment to innovation and quality in the audio industry. Their advanced features, coupled with solid build quality and ease of use, make them essential tools for audio professionals seeking reliable solutions for their recording and mixing needs. Whether utilized separately or in conjunction, these devices amplify creativity and enhance the overall audio production experience.