Thank you for purchasing from Grommes~Precision! Grommes~Precision and its commercial audio division, Precision Electronics, has been designing, engineering, and manufacturing quality sound equipment in the United States since it started operation in March of 1946. Over a half a century of quality, service, and flexibility as “Your Personal Manufacturer”...
TECHNICAL SUPPORT A troubleshooting chart is located at the end of this manual for your convenience. If you are in need of further assistance, you can reach our design engineers at 1-847-599-1799. Grommes~Precision is based in Gurnee, Illinois and is on Central Standard Time. Our hours of operation are Monday - Friday from 7:00am to 3:30pm. Troubleshooting information can also be found at our website www.grommesprecision.com.
REAR PANEL DESCRIPTION 1. IEC Socket – Used for A/C Line Interconnect 19. MIC 2/Aux 2 Selector Switch* 2. Circuit Breaker – For Amplifier 20. Aux 2 Input (RCA Jack) 3. Earth Ground Connection Screw 21. Aux 1 Input (RCA Jack) 4.
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POWER SOURCE The supply transformer has been designed for use on either 115V or 230V, 50-60Hz, selected by slide a switch on rear panel. The amplifier is factory set at 115V. Battery Connection (24Vdc) When using external DC source, ground the amplifier via the screw terminal. (Electrical stability of the system will be increased by providing a good earth ground.) NOTE: The connection to the unit must be fitted with an in-line fuse.
8 or (4 ), when two or more loudspeakers are in use ensure that they are wired in such a way that the load impedance is between 4 and 16 . Series GT 60 and GT125 Technical Specifications Type Mixer Amplifier Model GT 60C GT 125C Supply Mains Voltage AC 115V/ 230V, 50 / 60Hz ± 10% Switchable Battery Voltage...
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Frequency response Mic 1~Mic 5: 60Hz ~ 15KHz ± 3dB Aux 1~ 6: 50Hz ~ 20KHz ± 3dB TEL: 50Hz ~ 15KHz ± 3Db Power amp in: 50Hz~15KHz± 3Db Total harmonic distortion Less than 1% at 1KHz, rated power Signal to noise ratio Mic 1~ 5: 60dB below rated power Aux 1-5: 60dB below rated power Aux 6: 80dB below rated power...
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IMPORTANT As the colors of the wires in the mains lead of The wires in the mains lead are colored this apparatus may not correspond with the In accordance with the following code: colored markings identifying the terminals in your plug proceed as follows: The wire which is colored green and yellow Green and Yellow: Earth (E)
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