To set the criterion level to 80 dB and the exchange rate to 3 dB, set the next 4 positions down.

For a high threshold of 80 and a low threshold of 70 set the first 4 positions of the right switch to down, up, up, and up.

To identify this unit as unit 0 set the next three switches down. (If the unit number is set to zero the code will not show the leading zero.)

All the switch positions in a column must be set to get the correct settings. Notice, as an example, the 115 dB upper limit switch could be up or down depending on the range setting. Also the threshold settings are encoded.

The M-27 reads the switches 1 and 2 only when the unit is reset or a battery is reconnected. If the switch positions are changed when the unit is operating, the change will be ignored. Switch 3 is read at the start of a printout. It may be changed to allow printouts to different printers or computers without destroying the accumulated data.

Code Decoding

The M-27 displays two different codes; a 4-digit code can be decoded to show the position of 13 switch positions, and a 3-digit code shows the position of 11 switch positions.

For the 4-digit code:

1.Press CODE/HL3 until a 4-digit code appears.

2.Enter the code in the table.

3.Convert from hex to binary (see Table 1).

4.Subtract 1 from first digit (2 becomes 1 and 1 becomes 0).

5.Look up each position as described under Setting Internal

Switches.

1 decodes to a 12-hour clock.

0 decodes to "A" weighting, 50 dB range, 115 dB U.L. and Slow time constant. The first E decodes to a 90 dB Criterion Level and a 5 dB exchange rate.

The last E decodes to a 90 and 80 dB thresholds.

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AudioQuest M-27 specifications Code Decoding
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M-27 specifications

AudioQuest M-27 is a standout speaker designed for audiophiles who demand high performance and exquisite sound quality. As part of AudioQuest's commitment to providing unparalleled audio experiences, the M-27 blends advanced technologies with premium materials to deliver exceptional musical clarity and accuracy.

One of the key features of the M-27 is its innovative driver design, which utilizes a new-generation ceramic cone. This cone is engineered to minimize distortion while enhancing transient response. The result is a speaker that offers a clear, detailed sound across a wide frequency range. The drivers are also matched with an advanced neodymium magnet system, ensuring efficient energy transfer and improved bass response.

The M-27 is equipped with a sophisticated crossover network that has been meticulously designed to maintain the integrity of the audio signal. By employing high-quality components, including precision resistors and capacitors, the crossover effectively divides the audio signal into specific frequency bands, allowing each driver to perform at its best. This attention to detail not only enhances sound quality but also helps to create a more cohesive listening experience.

Another notable characteristic of the M-27 is its sturdy and well-constructed cabinet. Built from high-density MDF, the cabinet is engineered to minimize resonance and vibration, which can color sound. Moreover, AudioQuest has incorporated internal bracing to further enhance structural integrity. The elegantly finished exterior not only adds to the speaker's aesthetic appeal but also serves to complement various home decors.

Connectivity is made simple with the M-27, thanks to its standard speaker terminals that accommodate a wide range of wire gauges. This flexibility allows audiophiles to use their preferred cables for optimal performance. Additionally, the speaker is designed to work seamlessly with a variety of amplifier configurations, making it an adaptable choice for different audio setups.

Incorporating these advanced technologies and design principles, the AudioQuest M-27 is not just a speaker; it's a gateway to an immersive listening experience. With its ability to reproduce sound with remarkable accuracy, it will appeal to discerning listeners looking to elevate their audio playback and enjoy their favorite music in a whole new light. Overall, the M-27 stands as a testament to AudioQuest's dedication to crafting high-quality audio products that meet the needs of serious music enthusiasts.
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