Troubleshooting guide

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Troubleshooting Guide

Owner’s Manual

Liberty

ANCHOR Audio, Inc. (310) 784-2300

100-0005-000 / Revision F, 03/97

Having trouble with the sound system?

Condition Possible Cause

No sound (power LED not lit):

• power switch OFF

• batteries fully discharged (LED flashes briefly)

Charge indicator doesn’t light: • blown fuse

No sound

(power LED lights): • no output from source

• input cable unplugged

• input volume control low or off

• plug inserted into switched speaker output,

but no speaker connected

Shortened battery life: • short in external speaker cable or speaker

• total external speaker impedance < 4Ω

• batteries not fully charged

• batteries need replacement

Distorted sound: • poor connection on input cable

• input signal too strong

Excessive hum or noise: • input cable not shielded

• not using balanced microphone

Having trouble with the wireless system?

Condition Possible Cause

No sound (TX ON indicator lights): • mute switch set to ‘mute’ position

• wireless volume control low or off

• no mic plugged into belt-pack transmitter

No sound

(TX ON indicator off): • sound system not turned on

• transmitter power switch turned off

• low battery or no battery in transmitter

100-05-0/F, LIB 2/6/01 9:26 AM Page 1

Summary of content (8 pages)

PAGE 1
00-05-0/F, LIB 2/6/01 9:26 AM Page 1 Troubleshooting Guide Having trouble with the sound system? Condition Possible Cause No sound (power LED not lit): • power switch OFF • batteries fully discharged (LED flashes briefly) Charge indicator doesn’t light: • blown fuse No sound (power LED lights): • • • • no output from source input cable unplugged input volume control low or off plug inserted into switched speaker output, but no speaker connected Shortened battery life: • • • • short in external
PAGE 2
100-05-0/F, LIB 2/6/01 9:26 AM Page 3 Important Safeguards CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: To reduce the risk of electric shock, do not remove the cover. No user-serviceable parts inside. Refer servicing to qualified personnel. WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture. AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR ATTENTION: Pour eviter les risques de choc électrique, ne pas enlever le couvercle.
PAGE 3
100-05-0/F, LIB 2/6/01 9:26 AM Page 5 Accessories MIC-90 Handheld Microphone Anchor’s dynamic, balanced, low impedance microphone with a unidirectional pick-up pattern. It has an on/off switch and comes with a 20' cable and mic clip. SS-450 Speaker Stand Thank you for choosing an Anchor Audio portable sound system. Our products incorporate state-of-the-art design and the finest quality of materials and workmanship.
PAGE 4
100-05-0/F, LIB 2/6/01 9:26 AM Page 7 Save the shipping carton and packing materials. They were specially designed to ship your unit safely. Getting Started Wireless Operation Inspection and inventory of your system Replacing the transmitter battery Check unit carefully for damage which may have occurred during transit. Each Anchor product is carefully inspected at the factory and packed in a special carton for safe transport.
PAGE 5
100-05-0/F, LIB 2/6/01 9:26 AM Page 9 Now Featuring WIRELESS Wireless Operation Feedback Information Setting up the wireless system What causes feedback? Checking the Frequency Code: Feedback is a ringing, howling, or shrill sound that is selfgenerated by the sound system. It is the result of sound from the speakers being picked up by the microphone(s) in use and then re-amplified by the system. This can form a selfsustaining loop that can damage the sound system if allowed to continue.
PAGE 6
100-05-0/F, LIB 2/6/01 9:26 AM Page 11 Keep in mind, the best sound system set-up is when the audience is not conscious of a sound system being used. Set-Up Battery Operation (MPB-4500) Setting up the Liberty sound system Caring for the built-in batteries Positioning of the speaker(s) is perhaps the most important consideration when setting up a sound system. You should survey the location prior to the activity and observe the seating arrangement and area of coverage.
PAGE 7
100-05-0/F, LIB 2/6/01 9:26 AM Page 13 Operation Set-Up PROJECT Mode (music/project) Switch To control feedback, try attenuating the respective tone control Use the mode switch to tailor the sound output of the Liberty for your particular application: system to the Auxiliary Input of the secondary system (known as ‘daisy chain’ operation). Set the volume of the second system, and thereafter the volume of the primary Liberty will control both units.
PAGE 8
100-05-0/F, LIB 2/6/01 9:26 AM Page 15 Operation Operation Mic 1 and Mic 2 Inputs Liberty Control Panel Mic Volume Controls Liberty is equipped with two balanced, low impedance XLR microphone inputs. Use with a balanced microphone to help prevent hum or interference when using long cables. They have phantom power for use with condenser-type microphones.