Gemini-XTR400-ass-sm维修电路原理图.pdf
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1、(1) ? ? ? SUBWOOFER / SATELLITES Gemini Sound Products Corp. 120 Clover Place P.O. Box 6928 Edison, NJ 08818-6928 732-738-9003 (Phone) 732-738-9006 (Fax) CONTENTS: Cautions, Connections, & Operations :.Page 2-4 Specifications:.Page 4 Parts Lists:.Page 5 PCBs:.Page 6-8 Schematics.Page 9 RadioFans.CN
2、收音机爱 好者资料库 (2) RadioFans.CN 收音机爱 好者资料库 (3) INTRODUCTION: Congratulations on your purchase of an XTR-400 speaker system engineered & manufactured by Gemini Sound Products. This state of the art speaker system is backed up by a three-year warranty. The XTR-400 offers ultimate fidelity, power handling,
3、 and an array of features that makes it a highly versatile, compact, self contained & powered speaker system. FEATURES: Active self-powered 400W rms tri-amp design. One 15-inch bandpass subwoofer. Features top-hat hardware for pole mounting of a satellite speaker and metal corner protectors. Two hig
4、h quality satellite speakers featuring 10-inch woofers and dual piezo horns housed in trapezoidal cabinets. Satellite speakers are uniquely designed for placement on stands or for use as floor monitors, and protected by full front metal grill and metal corners. Built-in active optimized crossovers.
5、Sensitivity/Volume controls. Satellites equipped with reliable Speakon connectors for exceptional sound. (cables must be purchased separately) Signal Ground Lift Switch for achieving the quietest possible hum-free operation. Airflow controlled by variable speed fan for maximum cooling and quietest p
6、ossible operation. Mono or Stereo operation. AC line voltage selector switch allows reconfiguring amplifier for either 110-120V or 220- 240V AC lines. Compact design featuring large metal handles and casters for ease in transporting. CAUTIONS: 1. All operating instructions should be read before usin
7、g this equipment. 2. To reduce the risk of electrical shock, do not open the unit. There are, NO USER REPLACEABLE PARTS INSIDE. Please refer servicing to a qualified Gemini Sound Products service technician. In the USA: If you experience problems with this unit, please call 1 (732) 738-9003 for Gemi
8、ni Customer Service. Do not attempt to return this equipment to your dealer. 3. Do not expose this unit to direct sunlight or to a heat source such as a radiator or stove. 4. This unit should be cleaned only with a damp cloth. Avoid solvents or other cleaning detergents. 5. When moving this equipmen
9、t, it should be placed in its original carton and packaging. This will reduce the risk of damage during transit. 6. DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. 7. DO NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANY CONTROLS OR SWITCHES. CONNECTIONS: INPUT SECTION: There are two parallel input connecto
10、rs (one female XLR and one 1/4” jack) per channel. Either can be used as an input or as a link to chain amplifiers. XLR INPUT JACKS: XLR INPUT JACKS (1) electronically balanced inputs accept a standard XLR male connector. Pin 1 = shield/ground, pin 2 = hot or positive (+) and pin 3 = cold or negativ
11、e (-). 1/4 PHONO INPUT JACKS: 1/4 PHONO INPUT JACKS (2) accept a balanced as well as an unbalanced line. The unbalanced line uses a standard tip-sleeve connection. The tip is positive and the sleeve is negative/ground. The balanced line uses a tip-ring-sleeve connection. Tip = hot or positive (+), r
12、ing = cold or negative (-), and sleeve = shield/ground. SENSITIVITY/VOLUME CONTROLS: SENSITIVITY/VOLUME CONTROLS (10) control the input levels for each channel of the 2 satellite speakers. The volume level of the subwoofer is controlled automatically to match the volume levels of the satellite speak
13、ers. It will always maintain a perfect balance to give you incredible sound quality! SIGNAL GROUND LIFT SWITCH: SIGNAL GROUND LIFT SWITCH (7) is used to lift the balanced input connectors ground/shield from the amplifiers ground. When the signal ground lifted, the sound source disconnects from the a
14、mplifiers ground preventing ground loops which can generate hum and noise. See the Signal Ground Lift Switch Instructions for more detail. OUTPUT SECTION: Disconnect unit from the AC power source before making any connections. SPEAKER OUTPUTS (3): The speaker output connectors are Speakon connectors
15、 that will accept cables with Speakon connectors. (These cables must be purchased separately) The subwoofer is already connected internally, so you dont have to worry about connecting it to the amplifier. AC POWER SECTION: POWER SWITCH (8): turns the unit on and off. POWER LED (9): the power LED lig
16、hts when the power is on. FUSE (4): replace with proper type and rating. AC INLET (6) is used to attach the power cord to the unit. AC LINE VOLTAGE SELECTOR SWITCH (5) allows reconfiguring amplifier for either 110-120V or 220-240V AC lines. OPERATION: STEREO OPERATION: The unit has two channels for
17、stereo operation. Each channel provides a separate signal at the speaker outputs. The following instructions are for use with 8W speakers of matched power ratings. We suggest only using the speakers that come with the unit. 1. With the power OFF, connect your input cables from your music source (suc
18、h as your mixer) to the Channel 1 and Channel 2 INPUTS using the XLR INPUT JACKS (1) or 1/4 PHONO INPUT JACKS (2). 2. Connect your speakers to the Channel 1 and Channel 2 SPEAKER OUTPUTS (3). 3. With the SENSITIVITY/VOLUME CONTROLS (10) of both channels set to zero (fully counter clockwise), turn th
19、e POWER SWITCH (8), ON. Okay, now try playing some music and/or talking into your microphone, and set the level of your input as high as you think youll need it. This way it will be as high above the amplifiers noise floor as possible so youll get the best possible sound with the least amount of noi
20、se. Now play some music and listen for audible distortion. If you do hear distortion decrease the output level using the SENSITIVITY/VOLUME CONTROLS (10). MONO OPERATION: Connect your MONO signal to the Channel 1 input (1 or 2). Now create a link by connecting the remaining Channel 1 input to a Chan
21、nel 2 input (1 or 2) using a standard balanced cable (may be purchased separately). You can adjust the level of each satellite speaker using its channels SENSITIVITY/VOLUME CONTROL (10). USING THE SIGNAL GROUND LIFT SWITCH: Depending on how your sound system is hooked up, sometimes applying the grou
22、nd will create a quieter signal path. Sometimes lifting the ground can eliminate ground loops and that annoying hum to give you quieter and cleaner overall sound. 1. With the power amp ON, listen to the system in idle mode (no music or signal) with the ground ON. The SIGNAL GROUND LIFT SWITCH (7) wi
23、ll be in the left position. 2. Turn the power OFF before moving the SIGNAL GROUND LIFT SWITCH (7). Now lift the ground by moving the SIGNAL GROUND LIFT SWITCH (7) to the right. Turn the power back ON and listen to determine which position makes the overall sound quieter with the least amount of nois
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