Radio Shack Stereo Equalizer 32 2059 User Guide

32-2059  
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 fidelity 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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The Basics  
The Basics  
features  
Left Equalizer  
IN/OUT Switch  
Right Equalizer  
IN/OUT Switch  
Left Output  
Level Control  
Right Output  
Level Control  
Left LOW  
CUT Switch  
Right LOW  
CUT Switch  
Left +6/+3/0/-10 LED  
Output Level Indicators  
Right +6/+3/0/-10 LED  
Output Level Indicators  
POWER On/Off  
Rocker Switch  
Left Equalizer  
Controls  
Right Equalizer  
Controls  
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The Basics  
features  
REC Output Jacks  
XLR Output Jacks  
Connect to your recorder’s  
input so that you can record  
sound from the equalizer.  
Connect to your amplifier  
or audio mixer via an XLR  
(balanced) audio cable.  
back of equalizer  
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.  
Ground Wire Connection  
Connect the ground wire here.  
¼” Audio Input Jacks  
¼” Audio Output Jacks  
Connect to your amplifier  
or audio mixer via a ¼-inch  
(balanced) audio cable.  
Connect audio input source  
(CD or DVD player, TV, video  
camera, etc.) here via a ¼-inch  
(balanced) audio cable.  
GROUND LIFT Switch  
Fuse  
Allows you to disconnect the  
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.  
Stereo Phono Audio Output Jacks  
Connect to your amplifier or audio  
mixer via an unbalanced audio  
cable. Match red and white jacks  
with the red and white connections  
on the cable.  
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The Basics  
The Basics  
features  
front of equalizer  
important safety instructions  
(UL 6500)  
1. Read all safety and operating instructions before the  
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.  
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.  
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.  
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).  
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.  
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  
built-in installation such as a bookcase or rack unless  
it provides proper ventilation as specified by the  
manufacturer.  
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 +6/+3/0/-10 LED output level indicators light  
up to indicate the output level of each side of your sound  
system, from -10dB to +6dB.  
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  
8. Keep appliance away from heat sources such as  
radiators, heat registers, stoves, or other appliances  
(including amplifiers) that produce heat.  
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.  
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The Basics  
The Basics  
9. Operate this appliance using only the power source  
17. Move appliance and cart combinations with care.  
indicated on its marking label. If you are not sure  
of your home's power type, consult your appliance  
dealer or local power company.  
Quick stops, excessive force, and uneven surfaces  
may cause the appliance and cart combination to  
overturn.  
10. This appliance is equipped with a polarized power  
cord plug (a plug having one blade wider than the  
other).This plug will fit 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 fit, contact your electrician to replace  
your obsolete outlet. Do not defeat the safety purpose  
of the polarized plug.  
11. Route power-supply cords so they are not likely to be  
walked on or pinched by items placed on or against  
them, paying particular attention to cords at plugs,  
convenience receptacles, and the point where they  
exit from the appliance.  
18. Unplug this appliance from the wall outlet and refer  
servicing to qualified service personnel under the  
following conditions:  
• When the power-supply cord or plug is damaged.  
• 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 qualified technician to restore  
the appliance to normal operation.  
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 fire 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  
fire or electric shock. Never spill liquid of any kind on  
the appliance.  
• 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 qualified service personnel.  
20. When replacement parts are required, be sure the  
service technician has used replacement parts  
specified by the manufacturer or have the same  
characteristics as the original part. Unauthorized  
substitutions may result in fire, 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.  
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The Basics  
The Basics  
22. For added protection for this product during a  
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.  
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 fire or electric shock.  
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The Basics  
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.  
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 ¼" (6.35 mm) audio cables.  
REC  
OUTPUT  
Stereo Phono  
¼” Input  
Audio Input  
Jacks  
Jacks  
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.  
NOTE  
Use only one type of cable at a time.  
connecting output sources  
GROUND  
To play the equalizer's output signal through your sound  
system for events such as parties, dances, conferences,  
etc., connect either stereo phono, ¼" (6.35 mm), or XLR  
audio cables to the equalizer’s OUTPUT jacks and to your  
amplifier's input jacks.  
LIFT Switch  
2. Turn off the equalizer and move the GROUND LIFT  
switch to the LIFT position.  
Stereo Phono  
XLR Output  
3. Turn on the equalizer again. Listen to determine which  
switch position provides a background noise or hum  
in your sound system.  
Audio Output  
Jacks  
Jacks  
¼” Output  
Jacks  
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.  
Use only one type of audio cable at a time.  
NOTES  
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.  
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6. It is possible that at certain settings, the frequency  
using your equalizer  
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.  
1. Set the volume on the output devices (receiver,  
amplifier, or tape deck) to minimum and turn them on.  
2. Turn on the equalizer. The red power LED indicator  
lights up.  
LEVEL  
Control  
3. Set the IN/OUT switch to IN to activate the equalizer.  
The red LED indicator lights up.  
Each LEVEL control has four output level LED  
ndicators that light up to reflect the output level  
rom -10dB to +6dB. The +6 dB LED lights up to  
warn you that there is too much output power and  
distortion. Lower the LEVEL control until this LED  
goes off.  
IN/OUT  
Switch  
NOTE  
• 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,  
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, fast-blow,  
1¼ x ¼ inch (32 mm x 6.35 mm) fuse (not supplied, available  
at RadioShack or online at www.radioshack.com).  
4. Adjust some or all of the fifteen (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.  
Follow these steps to replace the fuse.  
Equalizer  
Controls  
1. Remove the fuse compartment cap on the back of the  
equalizer.  
5. To insert an electronic filter into the equalizer’s signal  
path, press LOW CUT to cut the low frequencies. The  
red LOW CUT LED lights up.  
Fuse  
Compartment  
Cap  
LOW CUT  
Switch  
2. Remove the old fuse and replace it with an identical  
fuse.  
3. Replace the fuse compartment cap.  
Never use a fuse of a different type or rating.  
NOTE  
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The Basics  
The Basics  
caring for your equalizer  
product specifications  
Equalizer Control Frequencies........................... 25/40/63/100/  
• Keep the equalizer dry. If it goes wet, wipe it dry  
immediately.  
160/250/400/630/  
1K/1.6K/2.5K/4K/  
• Use and store the equalizer only in normal  
temperature environments.  
6.3K/10K/16K Hz  
Equalizer Control Range............................................ +/– 12dB  
Input Sensitivity/Impedance .......................150mV/20K Ohms  
Output Level (Level Max; EQ Flat).............. 500mV/10k Ohms  
Record Level (Level Max; EQ Flat) ............. 450mV/10k Ohms  
S/N Ratio (A-WTD)............................................................ 90dB  
500mV OUTPUT T.H.D .......................................0.01% @1kHz  
Frequency Response.......................... 10 Hz to 50 kHz +/-3dB  
Channel Separation..............................................70dB @1kHz  
LED Level (500mV=0dB)........................................0dB @1kHz  
Low Cut............................................................. –6dB @100 Hz  
Power Source .................................... AC 120V, 60 Hz, 15-Watt  
Power Fuse ..............................F 0.5 Amp, 250Volts Fast blow  
Dimensions (HWD)........................1 3/4 x 19 x 8 11/16 Inches  
(44 x 480 x 220 mm)  
• 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  
(amplifier/receiver, input sources, and so on).  
Weight...........................................................5.47 lbs (2.48kgs)  
NOTE: Specifications are typical; individual units might vary. Specifications  
are subject to change and improvement without notice.  
NOTE: Actual product may vary from the images found in this document.  
• 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 fix  
this?  
• Make sure there are no low-level inputs connected to  
the LINE input jacks.  
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• 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  
1-800-The Shack (843-7422) and follow the menu  
options. Modifying or tampering with the equalizer’s  
internal components can cause a malfunction and might  
invalidate its warranty.  
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 company-owned stores  
and authorized RadioShack franchisees and dealers. For complete warranty details and exclusions, check  
with your local RadioShack store.  
RadioShack Customer Relations  
200 Taylor Street, 6th Floor, Fort Worth, TX 76102  
04/04  
Printed in China  
32-2059  
07A04  
©2004. RadioShack Corporation.  
All rights reserved. RadioShack and RadioShack.com are  
trademarks used by RadioShack Corporation.  
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