Gemini GPA-1000 Stereo Amplifier User Manual


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© GCI Technologies Corp. 2007 All Rights Reserved. Rev. 09.07
GCI Technologies Corp. 1 Mayeld Avenue, Edison, NJ, USA 08837 T: +1 732 346 0061 Email: sales@gci-technologies.com
Gemini Sound Products, S.A. Caspe 172 , 1A, 08013 Barcelona, Spain T: +34 93 436 37 00 Email: info.spain@gci-technologies.com
GCI Technologies Corp. GmBH Lerchenstrasse 14, Haus 3 – 1. Stock, 80995 München, Munich, Germany T: +49 (0) 89 319 019 80 Email: info.germany@gci-technologies.com
GCI Technologies Corp., Ltd. Unit 44 Brambles Enterprise Center, Waterberry Drive, Waterlooville, PO7 7TH, UK T: +44 (0) 87 087 00880 Email: sales.uk@gci-technologies.com
GCI Technologies Corp., S.A.R.L. Parc de Levenement1, Alleed’Efat, 91160 Longjumeau, France T: +33 (0) 1 69 79 97 70 Email: info.france@gci-technologies.com
Gemini’s GPA Series Power Ampliers provide you with excellent value for a wide range of intermediate
power applications. With its bi-polar output stage technology and comprehensive protection circuitry to prevent
overheating, the GPA Series gives you the high end features you want in a product that is well within your budget.
FEATURES
*Specications subject to change without notication for improvement
Ampliers GPA-1000 GPA-2000 GPA-3000 GPA-4000
Both Channels Driven at 8 Ohms
70W RMS / 140W PEAK 85W RMS / 170W PEAK 140W RMS / 280W PEAK 200W RMS / 400W PEAK
Both Channels Driven at 4 Ohms
90W RMS / 180W PEAK 110W RMS / 220W PEAK 200W RMS / 400W PEAK 300W RMS / 600W PEAK
Mono Bridge at 8 Ohms
180W RMS / 360W PEAK 220W RMS / 440W PEAK 400W RMS / 800W PEAK 600W RMS / 1200W PEAK
Momentary Peak Output
1000 W 2000 W 3000 W 4000 W
Dynamic Headroom at 8 Ohms
1.3 dB 1.4 dB 1.5 dB 1.6 dB
Dynamic Headroom at 4 Ohms
1.8 dB 1.9 dB 2.0 dB 2.2 dB
Voltage Gain
27 dB 28 dB 30 dB 32 dB
Power Consumption, rated at 4 Ohms,
both channels driven
400 W 500 W 800 W 1200 W
Weight
13.6 lbs (6.2 kgs) 16.5 lbs (7.5 kgs) 18.3 lbs (8.3 kgs) 20.2 lbs (9.2 kgs)
SPECIFICATIONS
Professional Power Ampliers
• Comprehensive Protection Circuitry with Protect LED Indicator
• ¼” TRS & XLR Balanced/ Unbalanced Inputs
• 3 Modes of Operation- Stereo, Parallel Mono, and Mono Bridge
• Decibel (dB) Level Meter with Clip LEDs
• Aluminum Extrusion Heat Sink Design with Directly Mounted
Output Transistors for No-Fault Operation
• Subsonic and Ultrasonic Filters for Better Protection and More
Efcient Operation
• Speakon & ¼” Speaker Outputs
• 30 Hz to 50 kHz Frequency Response, <0.05% THD (0.02%
Typical)
• High Output Power to Drive Professional Loudspeakers without
Clipping
• Ground Lift Switch
• Air Guide with Front-to-Rear Airow and Cooling Fan for
Thermal Stability and Reliability
• Protection: Short Circuit, DC, Thermal Cut-off, Sub/Ultrasonic
Frequency Filters, Turn-On Delay, Main Fuse, Secondary DC
Fuses
• Indicators: 1 Power LED, 1 Protect LED (except GPA-1000),
VU-Meter Per Channel
• Cooling: Fan, Front-to-Rear Forced Air
• Signal to Noise Ratio: 100 dB Below Rated Power at 8 Ohms
• Input Impedance Balanced: 20 kOhm
• Balanced/ Unbalanced Inputs: XLR & ¼” Jack
• Dimensions: 19”W x 10.75”D x 3.5”H (483 x 273 x 89mm)
• Input Impedance Unbalanced: 10 kOhm
• Total Harmonic Distortion: > 0.05%, typical 0.02% at 1 kHz
• Output Power EIA: 1 kHz at 1% THD, WRMS
• Frequency Response: 30 Hz - 50 kHz • Slew Rate: 20 V/μS
• Damping Factor: Greater Than 200 at 8 Ohms
• Input Sensitivity (For Rated Power at 8 Ohms): 1 VRMS
• AC Power Requirements: 110-120V/ 60 Hz; 220-240V/ 50 Hz
• Speaker Outputs: Speakons & ¼” Jack
(All models have same back panel connections)
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