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MODEL 1200 MODEL 1200
Weight: 9.5 lbs Dimension: 1 U rack space 19"W x 1.75"H x 15"D (with recess on front panel)
Basic Class D (PWM) operation compares an input waveform (a) with a ramping signal (b); the output of the comparator drives a pair of output switches(c), whose output the amplifier then lowpass-filters and passe to the load(d).
Power ratings
8 ohms stereo 350 W 4 ohms stereo 600 W 2 ohms stereo 800 W 8 ohms bridge 1200 W
VREF
4 ohms bridge 1600 W
+ _
(a)
(a)[
(b)
+
Frequency Response [ +0,-0.5Db 20-20 000Hz @ 1W RMS into 4 ohms [ +0,-3Db 20-20 000Hz @ 800W RMS into 4 ohms
(b) [
Vcc
(c)[ (d)[
RAMP GENERATOR (c) (d)
Total Harmonic Distorsion
Less than 0.1% @ 800W RMS per channel into 4 ohms Trasient Intermodulation Distorsion None (0%) due to the nature of the circuit
Front Panel Indicator
Enable LED for normal operation, Clip LED for clipping, distorsion, current limit, over temp and fault of amplifier.
Output Slew Rate
The amplifier output slew rate is internally controlled to optimize phase linearity and improve transient response, there for it cannot have slew rate limit.
Power Consumption Effiency
1800W both channel driven into 4 ohms. More than 96% at all power. Mode of Operation for Power Supply Switch mode resonant PWM power supply, 62.5kHz operating frequency, 2KW capacity. Switch mode adaptive dead time power amplifier, 250kHz operating frequencywhit input/output comparator and limiter to prevent more than 2% distorsion at over-clipping, voltage and current mode feedback for linearity and protection.
Mode of Operation for Power Amplifier
Hum and Noise
Greater than 95 Db below full power, from 20-20 00Hz
Input Sensitivity Load Protection
1.4V for full power into 4 ohms
DC protection from input to output, load mismatch and accidental short circuit, limiter.
Load Impedance
4 ohms minimum per channel, powers reduce down to 50W RMS per channel into 3.2 ohms and less.
Cooling
4 fans and small aluminium heat sink.
Limiter
Input and output comparison, limited to max of 2% deference between input and output.
Input Voltage
110-130V or 205-250V, internally switchable.
_
These controls are used to adjust the input gain of each channel. To have more gain turn the control button clockwise.
INPUT SENSITIVITY
A simple on/off switch. Push the ''o'' position to turns the power off. Push the ''-'' position to turns the power on.
POWER SWITCH
CH-1
CH-2
D-AMP
N ATIO LIFIC DIGITAL AMP
POWER
CLIP
CLIP
LEVEL
ENABLE
LEVEL
ENABLE
BLUE LIGHTING SERIES
MODEL 1600
Illuminates when AC mains power is being supplied to the amp & a signal is deteced .
ENABLE LED
For clipping, distorsion, current limit, over temp and fault of amplifier.
CLIP LED
Two parallel electronically balanced stereo input jacks are provided for each channel. This allows for one to be used as a conventional input, and, simultaneously, the other to be used as a ''line out'' (Y-cord) to connect to another input jack on this amplifier or other amps or equipment.
INPUT JACK
Two banana plugs terminals output are provided for each channel. These outputs are in parallel; hence, the speaker connection cables can be terminated with phone plugs, banana plugs, or stripped wires for use in the binding post terminals. However, care must be exercised to assure correct speaker phasing. See the speaker connection bellow to connect bridged ! or in stereo mode. AC CH-1
INPUT BRIDGE
SPEAKER OUTPUTS
CH-2
INPUT
+ 1
+ 2 -
1800 W MAX
D-AMP SERIAL #:
4
MIN / CHANNEL
-
110-130 V or 205-250 V, internally switchable.
AC LINE CORD
When the bridge button is pushed you are in bridge-mono mode . Always turn the amp off before ! pushing the bridge button off or on.
BRIDGE BUTTON
STEREO MODE
+
+ -
MIXER
AC CH-1
INPUT BRIDGE
Bridge button off, up.
CH-2
INPUT + 1 + 2 -
1800 W MAX
D-AMP SERIAL #:
4
MIN / CHANNEL
-
BRIDGE-MONO MODE
Bridge button off, up.
+
MIXER
AC CH-1
INPUT BRIDGE
! Do not use black banana jacks
CH-2
INPUT + 1 + 2 -
1800 W MAX
D-AMP SERIAL #:
4
MIN / CHANNEL
-
Bridge button on, down.