TEXONIC DX850 User manual

OWNERS MANUAL
DX850/1250 POWER AMPLIFIER
MULTI CHANNEL
DIGITAL POWER AMPLIFIERPOWER
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 8
DX1250

2

The TEXONIC DX series multichannel power amplifiers are ideal for use in adding additional
power in distributed audio systems or combining with the home theater applications. The
DX850 provides 8 channels, DX1250 provides 12 channels of digital amplifications. All models
designed in great features such as bridge mode operation, global and independent zone
triggering, audio sense circuitry with delay time per zone, two Bus Inputs/Outputs and
independent line inputs per zone to meet the wild range of audio applications and projects.
All amplifiers are rated at 50 watts per channel into 8 ohms and 80 watts per channel into 4
ohms. With the Stereo/Bridge switch in the Bridge mode, each zone of channels are combined
for a higher powered mono output of 160 watts into 8 ohms. With the high performance and
ultra-low distortion output, DX series amplifiers provide the excellent of sound quality for the
audio systems.
INTRODUCTION
THERMAL PROTECTION
PROTECTION CIRCUITRY
INSTALLATION
All DX series amplifiers are designed with special circuitry to safeguard the amplifier under a
thermal overload condition. Thermal protection mode will only engage when the unit has been run
at high volume for extended periods of time without adequate ventilation and/or when speaker
impedances are below the minimum levels for the amplifier. In thermal protection mode the
amplifier will automatically stop output. If this fault occurs, turn off the amplifier, and check that the
speaker impedance rating is above the minimum rating. Also check for adequate ventilation
around the amplifier and make adjustments if necessary. Once the unit has cooled to sage
operating temperatures, the amplifier may be powered back on.
Special circuitry has been designed into the amplifier to safeguard under a short-circuit condition.
A faulty speaker can also cause a short circuit condition. The Zone LED will blink rapidly between
Red and Blue If this fault condition occurs, turn off the amplifier and check speakers for short
circuit conditions when appropriate.
The amplifier can be placed on a shelf in an equipment rack, or on a table or cabinet. Be sure the
required clearances for ventilation and heat dissipation. The amplifier will take two rack spaces
with the feet removed.
3

DIGITAL POWER AMPLIFIERPOWER
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 8
DX1250
FRONT PANEL
REAR PANEL
1
2
1. Power/Standby LED
This LED lights red when any zone is active or
the amplifier is in standby mode.
1. Bus 12VDC Trigger In/Out
The Bus 12VDC Trigger In is used to activate all zones
that are using the Bus Input and disables other zone
triggers or signal sensing on those zones when it is used.
When the Bus 12VDC Trigger is used, all Bus-controlled
zone LEDs will be blue and active.
If the Bus Trigger In has 12V applied to it, only the 12V
Bus Trigger Out will have 12V and the Zone Trigger
Outputs will not.
2. Bus Inputs/Outputs
The Bus Line Inputs are optional inputs that can be used
to connect a single source to multiple zones. The Bus
Line Outputs are passive pass through the
corresponding of the Bus Inputs and can be used to
daisy chain the source to other amplifiers in the system.
3. Line/Bus Switch
Switches the zone input to the Line Input, Bus Input 1 or
Bus Input 2.
4. Line Input
The Line audio input for each zone is a dedicated
sensing input that will activate the zone when an audio
signal from a source is present.
2. Zone LED
Blue: the corresponding zone is powered on.
OFF: the corresponding zone is off (standby mode).
Red/Blue: A short circuit happens on the speaker outputs.
5. 12VDC Trigger In/Out (Each Zone)
The Zone 12V Trigger In is used to activate a specific zone. The
Zone Trigger Out can be used to trigger other 12V devices. The
delay and audio sensing are bypassed when the 12V Zone Trigger
Input is used. When a Zone Trigger is active, the zone LED will be
blue. If no voltage is present in the Zone Trigger, the Zone LED will
be off. Standby Mode The amplifier will go into Standby mode
when audio signal or trigger is not present after 3 munites.
6. Speaker Outputs
The minimum speaker impedance is 4 ohms for Stereo Mode and 8
ohms for Bridge Mode.
7. Stereo/Bri dg e Switc h
Selects the output mode of each zone for stereo or Bridge
operation.
8. Gain Controls
Left and Right gain controls for each zone adjust the sound level
independently.
Only using Left control to adjust the sound level when used in
Bridge Mode.
9. Voltage Switch
AC 115V or AC 230V dual voltage selector.
10. AC Input
Apply the correct voltage before operate the amplifier.
4
1
2 3 4 5
6 7 8
9
10
Bridge
Trigger
In Out
Vol.Le �Vol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
AC 115V~
Trigger
AC 230V~
In In1
Out1
In2
Out2
Out
12 0V~6 0Hz ,120 0W FU SE T1 0AL,25 0V
23 0V~5 0Hz ,120 0W FU SE T5 AL,250 V
Bus
Bridge
Trigger
In Out
Vol.Le �Vol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.Le �Vol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.Le �Vol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.Le �Vol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.Le �Vol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.Le �Vol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.Le �Vol.Ri ght
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
R L
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 8

SPECIFICATIONS
Power Output:
80W /Channel, 1KHz into 4 Ohms, One Zone Driven
50W /Channel, 1KHz into 8 Ohms, One Zone Driven
160W, 1KHz into 8 ohms, Bridge
Amplifier Channels:
DX850: 8 Channels, 4 Zones
DX1250: 12 Channels, 6 Zones
Signal-to-Noise Ratio: >90dB A-weighted
Frequency Response: 20Hz to 20KHz +1.7/-1dB at 1W output into 8 Ohms
Input Sensitivity: 600 mV for 80W @ 1 KHz 4 Ohm One Zone
700 mV for 50W @ 1 KHz 8 Ohm One Zone
Input Impedance: >22K Ohms Line Input
Trigger Inputs/Outputs: Bus and Zone @12VDC
Zone Line Input: Line In, Bus In 1, Bus In 2 select switch per zone
Bridge Mode: Select Stereo or Bridge mode per zone 8 Ohm only
Speaker Connectors: Detachable speaker terminals support up to 14awg wire
Delay Time: When audio signal or trigger is not present after 5 munites.
Power Requirements (Switchable):
DX850: 100-120VAC 60Hz 600W Max
DX1250: 100-120VAC 60Hz 900W Max
220-240VAC 50Hz 900W Max
Fuse Rating:
DX850: 100-120V/T5A, 250V
220-240V/T2.5A, 250V
DX1250: 100-120V/T8A, 250V
220-240V/T4A, 250V
Dimensions:
DX850: 16.81”W x 3.46” H x 16.14”D (42.7 x 8.8 x 41.0 cm)
DX1250: 16.81”W x 3.46” H x 16.14”D (42.7 x 8.8 x 41.0 cm)
Weight:
DX850: 8.6Kg (19lbs.)
DX1250: 9.3Kg (20.5lbs.)
5

SYSTEM CONFIGURATION
Typical Mode
DX amplifiers can be configured as the main amplifier for an audio distribution system or home
theater system. When used with an audio distribution preamp or Matrix processor, each zone can
independently
drive one of several different sources by using each zone’s individual line audio inputs. If the
specify zone needs a higher power, please just use Bridged mode.
When DX1250 or DX850 is working as a home theater amplifier, the amplifier could support up to
a 7.1 or 5.1 surround system, and recommend using the Bridged mode to have the higher outputs.
6
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br idg e
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
AC 115V~
Trigger
AC 230V~
In
In1
Out1
In2
Out2
Out
12 0V~6 0Hz,1 200 W FUSE T 10AL ,250V
23 0V~5 0Hz,1 200 W FUSE T5AL,2 50V
Bus
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br idg e
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br idg e
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br idg e
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br idg e
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br idg e
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br idg e
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br idg e
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
R L
ZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 8
DVD

Bridged Mode
When the amplifier is in Bridged mode operation, a single channel (the left) is used to provide a
higher power mono output. Use one channel pair to amplify the left channel by connecting the
left audio signal to the L input of a channel pair, setting the Stereo/Bridge switch to "Bridge" and
connecting the speaker as indicated below. Use a second channel pair for the right channel by
connecting the right audio signal to the L input of a second channel pair, setting the Stereo/Bridge
switch to "Bridge" and connecting the speaker as indicated below
Wiring Instructions - Bridged Mode
* Turn off the amplifier and connect an 8-ohm minimum load.
* Set the Stereo/Bridge switch to Bridged Mode.
* Follow the Bridge mode markings on the back of the amplifier:
Connect the negative lead (-) of the speaker cable to the R– terminal.
Connect the positive lead (+) of the speaker cable to the L+ terminal.
* Apply the Line In from audio source to the Left Line In connector.
* Power on the amplifier.
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
AC 115V~
Trigger
AC 230V~
In
In1
Out1
In2
Out2
Out
12 0V~6 0Hz,1 200 W FUSE T 10AL ,250V
23 0V~5 0Hz,1 200 W FUSE T 5AL,2 50V
Bus
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
Bridge
Trigger
In Out
Vol.LeVol.Rig ht
Line
In
R L
Stereo
Br id ge
L+
L- R-R+
+ -
Line In
Bus In 2
Bus In 1
R L
ZONE 1 ZONE 2 ZONE 3
ZONE 4
ZONE 5
ZONE 6
ZONE 7 ZONE 8
DVD
7