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manual abstract
Contact qualified service personnel as soon as possible. To avoid the risk of electric shock, do not open the unit. CHANGING BATTERY Remove the battery whenever the unit is to remain unused for an extended period of time. 3 PANEL DESCRIPTIONS 4 5 <- OUTPUT INPUT <-BflSS : ' Equalizer G€B-7 II3DSS 1. AC Adaptor Jack Accepts connection of an AC Adaptor (optionally available BOSS PSA-Series). By using an AC Adaptor, you can play without being concerned about how much battery power you have left. * You may find that it is a good idea to keep a battery installed in the unit even while using an adaptor. That way your playing won't be disrupted even if the adaptor is accidentally disconnected. * If you are going to use an AC adaptor, be sure to use the specified unit (BOSS PSA-Series). Use of any other adaptor may result in damage, malfunction or electric shock. Also, if you are not going to be using it for an extended period of time, disconnect the AC adaptor from the AC outlet. 2. CHECK Indicator This indicator shows whether an effect is ON/OFF, and also doubles as the Battery Check indicator. The indicator lights when an effect is ON. If this indicator goes dim or no longer lights while an effect is ON, the battery is near exhaustion and should be replaced immediately. 3. OUTPUT Jack The output jacks are used to connect the unit to amplifiers or other devices. 4. Pedal Switch This switch turns the effects ON/OFF. 5. Thumbscrew This thumbscrew is loosened to open the pedal, allowing battery replacement. For instructions on how to replace the battery, please refer to "CHANGING THE BATTERY". 6. INPUT Jack This jack accepts input signals (coming from a bass guitar, some other musical instrument, or another effects unit). * The INPUT jack also serves as the power switch. Power is turned on whenever a plug is inserted into the INPUT jack, and is turned off when the plug is disconnected. When not using the unit, you should disconnect any cord connected to the INPUT jack. 5 Equalizer Control Knobs Equalizer Control knobs These knobs allow you to boost or cut the center frequency of 50,120,400, 500, 800, 4.5 k or 10 kHz within +/-15 dB. Level Control Knob This knob allows you to adjust the output level of the effect sound to minimize the level difference between the effect and direct sounds. Level Control Knob 6 Inserting a plug into the Input lack will automatically switch the unit on. ' Before connecting or disconnecting any patch cords, be sure all the volume controls in your system are set to minimum. This will help prevent any damage to system components. OPERATING THE UNIT 1. When you have made the necessary connections, set the knobs as shown in the illustration. 2. Depress the pedal switch to turn the effect on. (Make sure that the CHECK Indicator lights.) 3. Adjustthe tone using the relevant Equalizer Control Knobs. 8 4. Adjust the output level using the Level Control Knob, to minimize the level difference between the effect and direct sounds. 9 CHANGING THE BATTERY When the indicator goes dim or no longer lights while an effect is on, it means that the battery is nearly dead and must be replaced. Replace the battery following the steps below. 1. Loosen the thumbscrew at the front of the pedal, then I ift the pedal upwards to open the unit. * The thumbscrew can be left in the pedal while changing the battery. 2. Remove the old battery from the battery housing, and remove the snap cord connected to it. 3. Connect the snap cord to the new battery, and place the battery inside the battery housing. * Be sure to carefully observe the battery+s polarity (+ versus -). 4. Slip the coil spring onto the spring base on the back of the pedal, then close the pedal. * Carefully avoid getting the snap cord caught in the coil spring. 5. Finally, insert the thumbscrew into the guide bush hole and fasten it securely. 10 FREQUENCY RESPONSE m 3 hi > LU 10 100 1k 10k FREQUENCY(Hz) 11 SAMPLE SETTING Standard Rock Heavy Metal Slapping Play 12 SETTING MEMO F ? i i Ï < X 1 1 1 I t Bass Amplifier Simulation SPECIFICATIONS GEB-7 : Bass Equalizer Nominal Input Level .................-20 dBm Input Impedance.......................1 MQ Nominal Output Level ..............-20 dBm Output Impedance....................1 kO Recommended Load Impedance... 10 kQ or greater Residual Noise Level.................-100 dBm (IHF-A, Typ.) Variable Range..........................Equalizer Control : +/-15 dB Level Control : +/-15 dB Controls....................................Pedal Switch, Equalizer Control Knobs (50,120,400,500,800,4.5 k, 10 kHz), Level Control Knob Indicator...................................CHECK Indicator (serves also as battery check indicator) Connectors................................INPUT Jack, OUTPUT Jack, AC Adaptor Jack (9 V DC) Power Supply............................9 V DC : Dry Battery 9 V type (6F22/9 V), AC Adaptor 14 Current Draw.......