EQUALIZATION PROCESS

Always begin the equalization process with all sliders at their center-detent (flat response) positions. For units equipped with FLS®, increase system volume until slight feedback occurs. Note the LED(s) that illuminate, and lower the corresponding fader(s) until feedback is eliminated. In other words, see the light pull down the fader. For the Q 215B, lower each fader until the feedback frequency is found. Lower the faders in small amounts to avoid adversely affecting sound quality. Likewise, excessive boosting of a frequency may result in feedback.

EXERCISE CAUTION WHEN ATTEMPTING TO BOOST FREQUENCIES BELOW SPEAKER SYSTEM TRANSDUCER CUT-OFF.

Typical sound reinforcement enclosures are not designed for 20 Hz performance, and transducer damage could result from “over-boosting” low frequencies. Excessive boost at very low frequencies could also limit overall system headroom. Engaging the 40 Hz low-cut filter is the best way to avoid these problems.

NOTE: Superb tonality, absence of feedback, and great-sounding systems may not be possible with any graphic equalizer. All other system components must be of high quality and designed for the application. No amount of equalization will correct an acoustically bad room, bad microphone/speaker arrangement, or completely correct the response curve of a poor loudspeaker.

FEATURES AND CONTROLS

FRONT PANEL

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(1)OUTPUT LEVEL LED METER

This LED array indicates output level from –12 dB to +12 dB.

(2)GAIN

This calibrated, detented control regulates overall gain of the EQUALIZER SECTION (3). Unity gain throughout the signal chain can be maintained by recovering lost signal gain at this point. The equalization process may result in noticeable signal loss. To compensate for this loss, engage the BYPASS (5) switch and compare the signal level with that of the equalized level. Increase the GAIN control until the equalized level approximates that of the bypassed level. Let your ears be your guide.

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Peavey QF131, QF215, Q215B manual Equalization Process, Features and Controls Front Panel Output Level LED Meter
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Q215B, QF131, QF215 specifications

Peavey, a renowned name in the audio equipment industry, has consistently provided high-quality professional audio gear. Among its product offerings, the Peavey QF131, QF215, and Q215B stand out as versatile equalizers that cater to the needs of audio engineers and musicians alike. These units are designed to enhance sound quality and provide precise audio control.

The Peavey QF131 is a dual-channel 31-band graphic equalizer known for its robust construction and reliability. It provides users with 31 frequency bands per channel, allowing for detailed and precise adjustments in various environments. One notable feature of the QF131 is its low-noise operation, which ensures that audio signals remain clean and free from unwanted interference. It also includes a bypass switch for seamless transitions between processed and unprocessed signals, making it a favorite among live sound engineers.

The QF215, on the other hand, is a dual-channel 15-band graphic equalizer, which is ideal for those who require a more streamlined equalization process. This model features a simplified interface that remains powerful enough for professional applications. It provides adjustable gain control, which allows users to boost or cut frequencies based on their specific sound needs. The QF215’s low-cut filter and high-pass filter options further enhance its flexibility, making it suitable for various audio applications, from live performances to studio recordings.

Complementing these models, the Q215B offers similar features with the added advantage of Peavey’s patented Switchable 20 Hz low-cut filter. This innovative technology is particularly useful for eliminating sub-bass frequencies that can muddy mixes. The Q215B also boasts excellent headroom, making it suitable for high-output scenarios without distorting the audio signal.

All three models share Peavey's commitment to high-quality audio processing. They incorporate durable controls and switchable input/output configurations, ensuring seamless integration into existing audio setups. With rugged metal housing, these equalizers are built to withstand the rigors of touring and frequent use, further enhancing their appeal for professional and semi-professional users.

In summary, the Peavey QF131, QF215, and Q215B are exemplary graphic equalizers that meet the rigorous demands of modern audio applications. Their extensive features, coupled with Peavey’s reliable technology, make them ideal choices for anyone seeking to enhance their sound system's performance and clarity.
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