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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REQ42-B Black 19" Rack Mount 2 x 21 Band Graphic Equalizer EQ | 42 Total Bands, RCA Inputs/Record Output, 3.5mm Aux Input, Dual VU Meters, LED Display, Removable Rack Ears

Product ID: 5110809

🔌RCA + 3.5mm aux inputs

🔵Blue LED sliders & multi-color display

🎚️42-band precision EQ

€ 116.81

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Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎛️ Elevate your audio game with precision and style — don’t just hear it, own the sound!

LIGHTWEIGHT DURABLE - Robust black metal chassis weighing just 6 lbs, perfect for mobile DJs, home studios, or live events.
VERSATILE CONNECTIVITY - Seamlessly switch between RCA stereo inputs, record outputs, and front-panel 3.5mm aux for ultimate flexibility.
VISUAL AUDIO PRECISION - Blue LED sliders, multi-color LED display, and dual VU meters deliver real-time, intuitive level monitoring.
RACK MOUNT READY DESIGN - Standard 19" rack size with removable ears for effortless integration into any professional setup.
DUAL 21 BAND GRAPHIC EQUALIZERS - Master your sound with 42 total bands spanning 20Hz-20kHz for studio-grade audio control.

The Rockville REQ42-B is a professional dual 21-band graphic equalizer featuring 42 total frequency bands with blue LED sliders and multi-color display for precise audio tuning. It offers RCA stereo input, record output, and a front-panel 3.5mm aux input, all housed in a durable, lightweight 19" rack-mountable chassis. Ideal for DJs, sound engineers, and audio enthusiasts seeking versatile, real-time visual monitoring and seamless integration into studio or live sound setups.

Specifications

ASIN	B00LZDSL7U
Best Sellers Rank	#42,200 in Electronics ( See Top 100 in Electronics ) #2 in Audio Component Equalizers
Color Name	Black
Connector Type	RCA
Customer Reviews	3.9 3.9 out of 5 stars (1,106)
Date First Available	July 21, 2014
Item Weight	6.5 pounds
Item model number	REQ42-B
Product Dimensions	19 x 12 x 6 inches
Standing screen display size	19 inches

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