Gemini XTR-400 User manual

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OPERATION MANUAL
BEDIENUNGSHANDBUCH
MANUAL DEL OPERADOR
MANUEL D’INSTRUCTIONS
XTR-400
ACTIVE SPEAKER SYSTEM
AKTIVES LAUTSPRECHERSYSTEM
SISTEMA ACTIVO DEL ALTAVOZ
SYSTÈME ACTIF DE HAUT-PARLEUR

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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, 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 high 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.
• 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 possible 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 using 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 [phone] for
Gemini 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 equipment, 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 connectors (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 negative (-).
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 (+), ring = cold or negative (-), and sleeve = shield/ground.
SENSITIVITY/VOLUME CONTROLS: SENSITIVITY/VOLUME CONTROLS
(10) control the input levels for each channel of the 2satellite speakers.
The volume level of the subwoofer is controlled automatically to match the
volume levels of the satellite speakers. 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
amplifier’s ground. When the signal ground lifted, the sound source
disconnects from the amplifier’s 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 anyconnections.
SPEAKER OUTPUTS (3): The speaker output connectors are Speakon™
connectors that will accept cables with Speakon™ connectors. (These
cables must be purchased separately) The subwoofer is already connected
internally, so you don’t 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 lights 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 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
(such 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 the 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 you’ll need it. This way
it will be as high above the amplifier’s noise floor as possible so you’ll get
the best possible sound with the least amount of noise. 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 Channel 2 input
(1 or 2) using a standard balanced cable (may be purchased separately).
You can adjust the level of each satellite speaker using it’s channel’s
SENSITIVITY/VOLUME CONTROL (10).
USING THE SIGNAL GROUND LIFT SWITCH:
Depending on how your sound system is hooked up, sometimes applying
the ground 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) will
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 noise and hum.
CAUTION: DO NOT DISCONNECT THE AC GROUND ON THE POWER AMPLIFIER IN ANY WAY.
THIS CAN BE VERY HAZARDOUS!!

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SETUP:
There are various ways to set up this system:
BASIC SETUP:
Okay, this is your basic setup, perfect for small parties and venues. The
ideal location for your subwoofer is close to a wall or in a corner. This
will give you the fullest bass response. Your 2 satellite speakers can be
placed up on stands on each side (stands must be purchased separately).
TWO-SYSTEM SETUP:
This setup is perfect for larger venues. This setup requires 2 XTR-400
systems. This will give you a total of 800 watts rms! Place a subwoofer
on each side to the left and right. Using the high-hat hardware and
connecting pole (which can be purchased separately), place the
pole in the high-hat socket on the subwoofer, and a satellite speaker on
top of the pole. The 2 remaining satellite speakers may be used as either
floor monitors, or placed on stands elsewhere in the room giving you a
louder and fuller sound.
Each speaker system in this setup must be used in MONO mode (see
Mono section). Connect the system that is on the left side of the audience
to the LEFT channel of your mixer, and the system that is on the right side
of the audience to the RIGHT channel of your mixer.
ACTIVE SPEAKER SYSTEM SUBWOOFER/SATELLITES
The XTR-400 features a unique design for ease in transporting. The 2
satellite speakers conveniently fit into a special recessed section of the
subwoofer and are securely fastened using a strap that attaches to the
handles (included).
SHOULD YOU EXPERIENCE ANY DIFFICULTIES OR PROBLEMS,
PLEASE CALL: 1 [phone] FOR GEMINI CUSTOMER SERVICE.
SPECIFICATIONS:
Subwoofer XTR-400SUB:
Amplifier’s Output Power:.........................230 Wrms on subwoofer channel
Frequency response:……………………...........................….32 Hz - 100 Hz
Components:………………………...........................……………..15" woofer
Features:
Efficient band-pass cabinet design
Large metal handles
Metal protection corners
Four 2" wheels
Amplifier assembly on the back
35mm standmount cap on top
Black carpet finish
Rubber feet
Dimensions:..............................................................WxDxH: 20"x31"x24.5"
(508 x 788 x 622 mm)
Weight:…………………............................……………………..96 lbs (44 kg)
Satellites GT-1002s:
Amplifier’s Output Power:..........................2x85 Wrms on satellite channels
Frequency response:…………............................………….100 Hz – 20 kHz
Components:….…………...........................……………………….10" woofer
6” dual piezo horn
Features:
Trapezoidal cabinet
Full front protective metal grill
Metal protection corners
35 mm standmount cup on the bottom
Black carpet finish
Rubber feet
Neutrik Speakon connector
Dimensions:……….……..............................…….W x D x H 12.5" x 9" x 18"
(318 x 229 x 458 mm)
Weight:……………………...........................………………18 lbs (8 kg) each
Total System:
Maximum SPL, continuous:……...........................……………………120 dB
Sensitivity………………………...........................……………………. 1 Vrms
Input Impedance………...............10 kOhm unbalanced/20 kOhm balanced
Features:
Balanced XLR and 1/4" Jack inputs
Neutrik Speakons on Satellite Channels’ outputs
Active electronic X-over (Fx=100 Hz)
Variable speed fan
Individual channel Sensitivity/Volume controls
Signal Ground lift switch
110-120 VAC / 220-240 VAC switchable
Total Weight:……………............…...............………………...132 lbs (60 kg)
SPECIFICATIONS AND DESIGN ARE SUBJECT TO CHANGE WITHOUT
NOTICE FOR PURPOSE OF IMPROVEMENT.

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NOTES:
Gemini Sound Products Corp.
120 Clover Place P.O. Box 6928
Edison, NJ 08818-6928
732-738-9003 (Phone) • 732-738-9006 (Fax)

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Worldwide Headquarters • 120 Clover Place, Edison, NJ 08837 • USA
Tel: [phone] • Fax: [phone]
France • G.S.L. France • 11, Avenue Leon Harmel, Z.I. Antony, 92160 Antony, France
Tel: + 33 (0) 1 55 59 04 70 • Fax: + 33 (0) 1 55 59 04 80
Germany • Gemini Sound Products GmbH • Ottostrasse 6, 85757 Karlsfeld, Germany
Tel: 08131 - 39171-0 • Fax: 08131 - 39171-9
UK • Gemini Sound Products • Unit C4 Hazleton Industrial Estate, Waterlooville, UK P08 9JU
Tel: [phone] • Fax: [phone]
Spain • Gemini Sound Products S.A. • Rosello, 516, Barcelona, Spain, 08026
Tel: [phone] • Fax: [phone]
© Gemini Sound Products Corp. 2003 All Rights Reserved.
Parts of the design of this product may be protected by worldwide patents.
Information in this manual is subject to change without notice and does
not represent a commitment on the part of the vendor. Gemini Sound
Products Corp. shall not be liable for any loss or damage whatsoever
arising from the use of information or any error contained in this manual.
No part of this manual may be reproduced, stored in a retrieval system or
transmitted, in any form or by any means, electronic, electrical, mechanical,
optical, chemical, including photocopying and recording, for any purpose
without the express written permission of Gemini Sound Products Corp.
It is recommended that all maintenance and service on this product is
performed by Gemini Sound Products Corp. or its authorized agents.
Gemini Sound Products Corp. will not accept liability for loss or damage
caused by maintenance or repair performed by unauthorized personnel.
In the USA: If you experience problems with this unit,
call 1-732-738-9003 for Gemini Customer Service.
Do not attempt to return this equipment to your dealer.