I cant get the slide controls to change any kind of frequency. Can you help?

There is a button that says EQ , if you do not engage the EQ your in bypass mode and there will be no Equalization . So press that button , but turn the volume to a lower level , because when the the EQ is engaged the volume will bump up . And also make sure your connections are correct, stereo out to EQ in . If your not sure if your hook up is correct refer to you Stereo owners manual.

How does the spectrum analyzer work

It's fake- it doesn't represent anything other than the overall level with a completely made-up representation of frequencies.

i have a sherwood receiver and yamaha speakers for outside deck,would this eq work for this?

Depends upon the inputs and outputs for your receiver. Also depends upon whether your receiver supports an equalizer loop. Also depends upon whether you pipe other sources into your receiver or not. Don't take this equalizer outdoors, of course.

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🎛️ Elevate your audio game—because your sound deserves the spotlight!

VISUALIZE YOUR AUDIO - Multi-color LED displays, blue LED sliders, and dual VU meters provide real-time, intuitive level monitoring—never miss a beat.
PLUG PLAY CONVENIENCE - Front panel RCA stereo input/output plus 3.5mm MP3/iPod jack means instant connectivity for all your devices.
SEAMLESS PRO INTEGRATION - Standard 19" rack-mount design with removable brackets fits effortlessly into any professional studio or live rig.
BUILT TO PERFORM ANYWHERE - Lightweight yet rugged black metal chassis powered by 110V AC, perfect for mobile DJs, home studios, or live events.
MASTER YOUR SOUND SPECTRUM - Dual 21-band graphic equalizers deliver ultra-fine control across the full 20Hz-20kHz range for pristine audio clarity.

The Rockville REQ42-B is a professional-grade dual 21-band graphic equalizer designed for precise audio shaping in studio and live environments. Featuring a 19" rack-mountable chassis, RCA and 3.5mm inputs, LED visual feedback, and durable construction, it offers versatile connectivity and real-time monitoring for DJs, sound engineers, and audio enthusiasts seeking flawless sound control.

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