Dual 15 Band
Graphic Equalizer
Thank you for purchasing your Dual 15 Band Graphic Equalizer from RadioShack. Your new equalizer features narrow band frequency balance controls that provide a wide array of frequency response variations. You can now match the speakers to your room, reduce or eliminate inadequacies in your high ???delity sound system, and tailor the reproduction of music to your heart???s desire.
Dual 15 Band Graphic Equalizer
Quick Start Guide
User???s Guide
Please read this user???s guide before installing, setting up and using your new product
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CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE
THE COVER OR BACK. NO
SERVICING TO QUALIFIED PERSONNEL.
The lightning symbol is intended to alert you to the presence of uninsulated, dangerous voltage within this product???s enclosure that might be of suf???cient magnitude to constitute a risk of electric shock. Do not open the product???s case.
The exclamation symbol is intended to inform you that
!important operating and maintenace instructions are included in the literature accompanhing this product.
The Basics
getting to know your equalizer
Your new equalizer can enhance your sound system in the following ways:
???Remedy any system suffering from rumble or low frequency below 30Hz overload by attenuating the lowermost equalizer controls so that you will not miss any of the music.
???Eliminate or reduce noise due to scratches on record surfaces or even the hiss on a tape by bringing down the control level at 9 kHz. You can even compensate for the boosted highs on Dolby processed tape or encoded FM Broadcasts.
???Equalize the tonal quality of broadcast stations if they attenuate or accentuate either highs or lows.
???Adjust the controls to accommodate high performance recording tapes that require special equalization in playback.
???Correct turntable cartridge or speaker inadequacies for pleasant listening.
???Find the appropriate equalizer control and adjust it up or down a few dB.
???Adjust the equalizer to accommodate voices or music.
features
POWER On/Off
Rocker Switch
The Basics
Stereo Phono Audio Input Jacks
Connect audio input source (CD or DVD player, TV, video camera, etc.) here via an unbalanced audio cable. Match left (white) and right (red) jacks with white and red connections on the audio cable.
The Basics
XLR Output Jacks
Connect to your ampli???er or audio mixer via an XLR (balanced) audio cable.
Ground Wire Connection
Connect the ground wire here.
????? Audio Input Jacks
Connect audio input source (CD or DVD player, TV, video camera, etc.) here via a
????? Audio Output Jacks
Connect to your ampli???er or audio mixer via a
GROUND LIFT Switch
Stereo Phono Audio Output Jacks
Connect to your ampli???er or audio mixer via an unbalanced audio cable. Match red and white jacks with the red and white connections on the cable.
Allows you to disconnect theFuse signal ground from the mains
and chassis earth ground. If the equalizer causes a hum or buzz in your sound system due to a ground loop, move the switch to the LIFT position.
The Basics
features
front of equalizer
POWER on/off rocker switch with LED indicator
Press up to power your equalizer. The LED will light up. Press down to turn your equalizer off. The indicator light will also turn off.
equalizer IN/OUT switches
The switch on the left is for the left channel and the switch on the right is for the right channel. Press in to activate your equalizer. The equalizer LED indicator lights up. Press again to defeat the equalizer function.
LOW CUT switches
The switch on the left is for the left channel and the switch on the right is for the right channel. Press in to attenuate the unwanted low frequency sound created by the source equipment. The LOW CUT LED indicator lights up. Press again to release the switch and turn off LOW CUT.
output level indicators
The indicators on the left correspond with the left channel and the indicators on the right correspond with the right channel. The
output level control
The control on the left is for the left channel. The control on the right is for the right channel. Turn to adjust the output signal of each channel so the average output equals the input signal level without distortion.
equalizer controls
The 15 controls on the left correspond with the left channel and the 15 on the right correspond with the right channel. Use these Equalizer Controls to adjust the frequency response of each side of your sound system. Each frequency control cuts or boosts up to ??12dB.
The Basics
important safety instructions (UL 6500)
1.Read all safety and operating instructions before the appliance is operated.
2.Keep all safety and operating instructions for future reference.
3.Follow all warnings on the appliance and in the operating instructions.
4.Unplug this appliance from the wall outlet before cleaning. Use only a damp cloth for cleaning. Do not use liquid or aerosol cleaners.
5.Do not use this appliance near water (for example, near a bathtub, washbowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool).
6.Do not place this appliance on an unstable cart, stand, tripod, bracket, or table. The appliance may fall, causing serious injury to a child or adult, and serious damage to the appliance. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the appliance. Follow the manufacturer's instructions for mounting, and use a recommended mounting accessory.
7.Slots and openings in the cabinet provide ventilation, ensure reliable operation, and protect from overheating. Do not block or cover these openings, and do not place the appliance on a bed, sofa, rug, or other similar surface. Do not place the appliance in a
8.Keep appliance away from heat sources such as radiators, heat registers, stoves, or other appliances (including ampli???ers) that produce heat.
The Basics
9.Operate this appliance using only the power source indicated on its marking label. If you are not sure of your home's power type, consult your appliance dealer or local power company.
10.This appliance is equipped with a polarized power cord plug (a plug having one blade wider than the other).This plug will ???t in the power outlet only one way. This is a safety feature. If you cannot insert the plug fully into the outlet, try reversing the plug. If the plug still doesn???t ???t, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug.
11.Route
12.Clean only as recommended by the manufacturer.
13.An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal.
14.Unplug the power cord from the outlet when you know that you will not be using the appliance for a long period of time.
15.Do not overload wall outlets, extension cords, or integral convenience receptacles, as this can result in a risk of ???re or electric shock.
16.Never push objects of any kind into this appliance through openings, as they may touch dangerous voltage points or short out parts that could result in a ???re or electric shock. Never spill liquid of any kind on the appliance.
The Basics
17.Move appliance and cart combinations with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn.
18.Unplug this appliance from the wall outlet and refer servicing to quali???ed service personnel under the following conditions:
???When the
???If liquid has been spilled or objects have fallen into the appliance.
???If the appliance has been exposed to rain or water.
???If the appliance does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions, as an improper adjustment of other controls may result in damage and will often require extensive work by a quali???ed technician to restore the appliance to normal operation.
???If the appliance has been dropped or damaged in any way.
???When the appliance exhibits a distinct change in performance.
19.Do not attempt to service this appliance yourself, as opening or removing covers may expose you to
dangerous voltage or other hazards. Refer all servicing to quali???ed service personnel.
20.When replacement parts are required, be sure the service technician has used replacement parts speci???ed by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in ???re, electric shock, or other hazards.
21.Upon completion of any service or repairs to this appliance, ask the service technician to perform safety checks to determine that the appliance is in proper operating condition.
The Basics
22.For added protection for this product during a lightning storm, unplug it from the wall outlet. This will prevent damage to the product due to lightning and power line surges.
23.Only use attachments recommended by the product manufacturer.
24.The product should be mounted to a wall or ceiling only as recommended by the manufacturer.
25.Overloading ??? Do not overload wall outlets, extension cords, or integral convenience receptacles, as this can result in a risk of ???re or electric shock.
The Basics
before you begin
Before you use your equalizer, be sure to set the power switch to the off position. All connections must be made when your equipment is turned off.
The Basics
connecting your equalizer
connecting input sources
Connect line level inputs (i.e.: tuners, CD players, etc.) to the INPUT jacks on the back of your equalizer through either stereo phono audio cables or ??" (6.35 mm) audio cables.
NOTE Use only one type of cable at a time.
connecting output sources
To play the equalizer's output signal through your sound system for events such as parties, dances, conferences, etc., connect either stereo phono, ??" (6.35 mm), or XLR audio cables to the equalizer???s OUTPUT jacks and to your ampli???er's input jacks.
NOTES ??? Use only one type of audio cable at a time.
???You can use the equalizer as a sound effect device for a mixer, by connecting the mixer???s SEND jack to the equalizer's INPUT, and playing back through the equalizer's output to the mixer???s RECEIVE jack.
The Basics
connecting REC output
You can record the equalizer's output signal by connecting the left and right cables from the equalizer???s REC OUTPUT to the input of a recorder.
REC
OUTPUT
using the ground lift switch
1.Move the GROUND LIFT switch to the ground position. Turn on the equalizer and listen to the sound system with no signal present.
GROUND
LIFT Switch
2.Turn off the equalizer and move the GROUND LIFT switch to the LIFT position.
3.Turn on the equalizer again. Listen to determine which switch position provides a background noise or hum in your sound system.
4.Keep the switch in the ground position if the noise level remains the same in either position. Keep the switch in the LIFT position if the equalizer provides a signal free of background noise and hum.
The Basics
using your equalizer
1.Set the volume on the output devices (receiver, ampli???er, or tape deck) to minimum and turn them on.
2.Turn on the equalizer. The red power LED indicator lights up.
3.Set the IN/OUT switch to IN to activate the equalizer. The red LED indicator lights up.
IN/OUT
Switch
???If you set the IN/OUT switch to out, the input signal is bypassed and routed directly to the other sound system???s output jacks. The red LED indicator goes off.
???To operate left channel IN/OUT, use the IN/OUT switch on the left. To operate right channel IN/OUT, use the IN/OUT switch on the right,
4.Adjust some or all of the ???fteen (15) equalizer controls ranging from 25 Hz to 16 kHz for each channel to get the desired frequency output. Each equalizer control adjustment can be cut or boosted up to ??12dB.
Equalizer
Controls
5.To insert an electronic ???lter into the equalizer???s signal path, press LOW CUT to cut the low frequencies. The red LOW CUT LED lights up.
LOW CUT
Switch
The Basics
6.It is possible that at certain settings, the frequency equalization slide controls will increase or decrease the total average signal level. Use the left and right LEVEL controls to adjust each channel so the average output equals the input signal level.
LEVEL
Control
Each LEVEL control has four output level LED NOTE indicators that light up to re???ect the output level
from
replacing the fuse
Your equalizer requires a 250 Volt, 0.5 Amp fuse to protect it from power surges and short circuits. If the equalizer suddenly turns off or will not turn on, the fuse could be blown. Replace the fuse with a 0.5 Amp, 250 Volt,
Follow these steps to replace the fuse.
1.Remove the fuse compartment cap on the back of the equalizer.
Fuse
Compartment
Cap
2.Remove the old fuse and replace it with an identical fuse.
3.Replace the fuse compartment cap.
The Basics
caring for your equalizer
???Keep the equalizer dry. If it goes wet, wipe it dry immediately.
???Use and store the equalizer only in normal temperature environments.
???Handle the equalizer gently and carefully. Do not drop it.
???Keep the equalizer away from dust and dirt.
???Wipe the equalizer with a soft cloth occasionally to keep it looking new.
???Modifying or tampering with the equalizer's internal components can cause a malfunction and might invalidate its warranty.
FAQs
What do I do if my equalizer doesn???t seem to be working?
???Check the AC power connection and make sure the AC outlet is ???live.???
???Check the power connections to the rest of system (ampli???er/receiver, input sources, and so on).
???Check the fuse. See "Replacing the Fuse" on Page **.
There???s no signal coming from one of my audio input sources! What should I do?
???Check the equalizer???s and the source???s control settings.
???Check the connection between the equalizer and input source.
I hear a hum coming from the input source. How do I ???x this?
???Make sure there are no
NOTE: Speci???cations are typical; individual units might vary. Speci???cations are subject to change and improvement without notice.
NOTE: Actual product may vary from the images found in this document.
???Keep the equalizer dry. If it gets wet, wipe it dry immediately.
???Use and store the equalizer only in room temperature environments.
???Handle the equalizer carefully; do not drop it.
???Keep the equalizer away from dust and dirt, and wipe it with a soft cloth occasionally to keep it looking new.
???If your equalizer is not performing as it should, take it to your RadioShack store for assistance. To locate your nearest RadioShack, use the store locator feature on RadioShack's website (www.radioshack.com), or call
This product is warranted by RadioShack against manufacturing defects in material and workmanship under normal use for one (1) year from the date of purchase from RadioShack
Printed in China
??2004. RadioShack Corporation.
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