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RAULAND-BORG CORPORATION
GENERAL DESCRIPTION
The Rauland DAK Series amplifiers are designed for use with Rauland's
institutional program and communication systems.
and dependability.
signal as low as 0.3 volts.
put matches the output of Rauland's communication panels; they also have a
70.7-volt balanced output.
with Rauland's Telecenter® 5000 and Responder@ 3000 systems.
are listed by Underwriters Laboratories,
The DAX amplifiers offer helpful power connections for related equipment:
three 120-VAC three-pin grounded outlets, and a floating auxiliary DC power
output (28 VDC, 1.2 A) that can be used for Rauland's Director Series control
panels, preamplifiers, graphic equalizer, and other equipment.
The amplifiers come with black-enamel face panels. Optional brushed-
chrome dress panels-- the RP2525 (DAX6O) and RP2700 (DAX120)--are available.
UNPACKING
The amplifier was thoroughly checked at the factory.
er, the enclosed parts, and the shipping container for signs of improper han-
dling during shipment.
dealer or distributor from whom you purchased the unit or--if the unit was
shipped directly to you--with the carrier.
The following parts are included with the amplifier:
D e s c r i p t i o n
Qty.
4
Rack-Mounting Screws for tapped holes (l0-32 x ½" hex-head,
SEMS, unslotted, machine).
4
Rack-Mounting Screws for untapped holes (10 x ½" pan-head,
slotted, thread-forming).
#l0 Tinnerman "U" type Speed Nuts, for untapped rack holes.
4
INSTALLATION
The amplifier should be rack-mounted where there is adequate ventilation,
a moderate temperature, an AC power outlet, and provisions for grounding.
The rack should have the standard 19-inch width and a vertical space of at
least 5¼ inches (DAX6O) or 7 inches (DAX120).
01987 RAULAND-BORG CORPORATION
DAX60 60-WATT POWER AMPLIFIER
DAX120 120-WATT POWER AMPLIFIER
INSTALLATION AND SERVICE
3450 West Oakton Street, Skokie, Illinois 60076-2951
l
They can be driven to their rated power output by an input
Their transformer-isolated, 25-volt balanced out-
Their outputs can operate with a split center tap
In case of damage, immediately place a claim: with the
Page 1 of 17
They offer high-quality sound
The amplifiers
Inspect the amplifi-
It is recommended that addition-
PRINTED IN U.S.A.
KI-1480
(708) 679-0900
l
Rauland
Part No.
WA202
WA102
AB1889
7/87
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Related Manuals for rauland DAX60
Summary of Contents for rauland DAX60
- Page 1 The DAX amplifiers offer helpful power connections for related equipment: three 120-VAC three-pin grounded outlets, and a floating auxiliary DC power output (28 VDC, 1.2 A) that can be used for Rauland's Director Series control panels, preamplifiers, graphic equalizer, and other equipment.
- Page 2 B. If the rack's holes are tapped, select the # 1 0 machine screws (WA202). Turret-Mounting (DAX60 only) DAX60 in a Rauland The rack-mounting procedures can be used to install the used and the am- Control Turret.
-
Page 4: Input Connections
Grounding CAUTION DO NOT DISCONNECT THE THIRD WIRE ON THE POWER PLUG. THIS WIRE GROUNDS THE AMPLIFIER'S CHASSIS TO PREVENT A POSSIBLE SHOCK HAZARD. IF AN ADAPTER IS USED TO CONNECT THE PLUG TO A TWO-PRONG SOCKET, MAKE SURE THAT THE AMPLI- FIER'S CHASSIS IS CONNECTED TO A PROVEN EARTH GROUND. - Page 5 The "GND" to the "GND" terminal when the BALANCED speaker output is used. terminal is next to the negative "AUX POWER" terminal on the DAX60; on the DAX120, the "GND" terminal is next to the "COM" input terminal. When the two center-tap terminals are linked together, either one of them may be connected to the "GND"...
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Page 6: Power Connection
Plug the power cord into a 120-V, 60-HZ, three-wire grounded outlet that can provide at least 935 watts (DAX6O) or 1105 watts (DAX120). Although the amplifier circuits by themselves consume no more than 175 watts (DAX60) or 345 watts (DAX120), connecting another device to the DC output could consume anoth- er 40 watts of power, and a total load of 720 watts could be connected to the three AC sockets. -
Page 7: Initial Troubleshooting
(at the upper left corner of the DAX6O, or the lower left corner of the DAX120)). If the problem does not lie in the load or the connections, one of the breakers may be defective. Disconnect the load and call your Rauland distribu- tor. Page 7 7/87... -
Page 8: Servicing Information
You will have to remove the front cover to access main printed circuit board. The DAX60 has a single 16-pin connector labeled "T" on the schematic; the pins are numbered from bottom to top on the board. The DAX120 has two 16-pin connectors: the top connector and the top half of the bottom connector are referred to as "Jl"... - Page 9 On both amplifiers, driver transistors Q505 and Q506 are screwed to the "L" bracket that is fastened to the large heat sink from inside the chassis. The power transistors (Q507-Q508 on the DAX60, Q5Ol-Q504 on the DAX120) are fastened directly to the large heat sink from the outside (to access them, The transistors are numbered in ascending order, remove the protective cover).
- Page 10 (3) Before installing a power transistor (Q507-Q508 on the DAX60, Q5Ol-Q504 on the DAX120), obtain an appropriate Silpad ® insulator. If a mica insulator is used instead, coat both sides of it with silicone grease (Dow-Corning Fit the insulator between the transistor and the DC4 or an equivalent).
- Page 11 DAX60 Circuit Description Refer to the attached schematic, KC1546, to trace the circuit descriptions that follow. Input and Preamplifier Circuits: Resistor Rl and Capacitors Cl and C507 reject Radio Frequency Interference (RFI). RVl is the input LEVEL control (potentiometer), which controls the signal level that is applied to the DAX's preamplifier circuits.
- Page 12 Protective circuits: There are several protections against excessive cur- rent. Transistors Q4 and Q7 are current limiters. If a short occurs across the audio output, the following sequence of events will occur: (1) the DC vol- tage across Resistors R29 and R32 will drop; (2) this drop will drive Transis- tors Q4 and Q7 into conduction;...
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Page 13: Specifications
Input Impedance: Input Sensitivity 0.3 v. for Rated Power Output: (including the DAX60: 105-130 VAC, 60 Hz, 935 watts Power Requirements: AC and DC outputs). DAX120: 105-130 VAC, 60 Hz, 1105 watts (including the AC and DC outputs). Supplies 1.2 Amperes at 28 VDC.