!
Extensive protection circuit for Temperature (transistor and transformer),
Overload, DC, RFI and Output short circuit.
!
Output termination on Dual Connectors (Speakon 4-way & Binding Post)
for each channel.
!
Low distortion and high damping factor for excellent sound quality.
!
Rugged 19" rack mountable chassis.
!
Built in limiter circuit, which protects the amplifier and speaker from being
over driven because of high input level signal.
!
Balanced / Unbalanced input signal through parallel XLR and 6.3mm (¼")
stereo phone jack in both channels.
!
Slide switch selection of Mono / Stereo / Bridge Mode provided on rear
panel.
!
Switchable ground lift to break the unwanted ground loops.
!
Heavy duty high current toroidal transformer which provides excellent
regulation and minimises hum & noise.
!
Indicator LEDs for Signal, Clip, Temperature (output devices and
transformer), Protect mode conditions.
!
Low pass filter switchable to 80Hz & 120Hz to use for subwoofer
applications.
!
Limiter On/Off switch.
• Features/General Description of Product
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LXA-7600
• Front Panel Controls & Features
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LXA-7600
1. POWER Switch
To be used only in Stereo/Mono mode for adjusting
the volume level of channel B. This control is
inactive in Bridge mode.
3. Volume Control for Channel A
When used in Stereo/Mono mode, it adjusts the
volume level of channel A. While in Bridge mode, it
adjusts the volume level of both the channels A & B
connected in Bridge mode.
Push the top part of the knob (marked l)to switch the
amplifier ON. Push the bottom part of the knob
(marked o) to switch the amplifier OFF.
5. Temperature Indicator LEDs for Channel A & B
The power switch has in built magnetic circuit
protector. In case of overload, power supply circuit
failure or any short and at overload magnetic circuit
breaker of the switch will activate to trip switch to
OFF position. After rectifying the fault push the top
part switch knob to make amplifier “ON”
Separate yellow LEDs provided for each of the two
channels A & B. Glowing of these LEDs indicates
excessive temperature of the output devices or
transformer. The special circuitry then mutes the
input signals. The amplifier will remain at mute
status, till the devices cool down to normal
temperature. Switch OFF the amplifier to cool down
and then switch ON to continue.
6. Volume Control for Channel B
Indicate the presence of signal in channel A and B
respectively.
8. CLIP Level LEDs for Channel A & B
7. Protect Indicator LEDs for Channel A & B
4. Signal Indicator LEDs for Channel A & B
This LED glows when the amplifier is switched ON.
2. Power LED
Separate orange LED provided for each of the two
channels A & B. These LED’s glow when the output
is shorted or the output is overloaded or the input is
too high or DC voltage is present on the speaker
output. In any of these conditions the amplifier goes
to protect mode. To reset the amplifier, switch OFF
the amplifier, turn volume control to zero, correct
the fault, and switch ON the amplifier after 5-10
seconds. Increase the volume control slowly to the
desired output below Clip level.
One separate red LED provided for each channel.
Continuous glow of LEDs indicates that there is
excessive signal being fed to the input of the
amplifier resulting in clipped and distorted output
levels. In such cases, it is advisable to reduce the
input signal or reduce the volume setting.
Otherwise, the amplifier may go into protect mode
and signal will mute.
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LXA-7600
