FEATURES
1. Power outputs applicable to a variety of requirements.
Minimum power into 8-ohm loads at less than 0.1%
THD (total harmonic distortion), of 300W+300W
(P-1090D), 200W+200W (P-1060D), 100W+100W
(P-1030D). Minimum power when driving 4-ohm
loads at less than 0.3% THD at any power level is
450W+450W (P-1090D), 300W+300W (P-1060D),
150W+150W (P-1030D). In BTL (bridged mono)
mode the amplifiers provide outputs of over 900W
(P-1090D), 600W (P-1060D) and 300W (P-1030D)
into 8-ohm loads.
2. Operation for 25V, 50V, 70V and 100V systems with
optional output transformers for complete load
isolation. 300W, 200W and 100W models for the
P-1090D, P-1060D and P-1030D respectively.
3. MODE SWITCH to select STEREO, BTL or PARALLEL
operation. In STEREO mode the two channels
operate independently. In BTL mode, the two
channels are configured for mono bridge operation
as a single monaural amplifier. In PARALLEL mode
the channel 1 input feeds both output channels.
In both BTL and PARALLEL modes, only the channel
1 input is active.
4. Front panel ON/OFF switch that doubles as a circuit
breaker, in the event of excessive AC current draw,
and has an integral power on indicator LED.
5. Green SIGNAL PRESENCE LED’s that indicate a
-30dB or larger signal at the inputs. These indicators
are independent of the input level control settings.
6. Red CLIP LED’s that light when the amplifier reaches
clipping level.
7. Dependable limiting and protective circuitry to guard
against damage to both amplifiers and speakers
from a variety causes. Separate protection circuits
for each channel sense short circuits, excessive heat
sink temperature and excessive DC offset at the
outputs. Output relays are provided for delayed
power turn on and for disconnecting the load in the
event a protection circuit is activated.
SPECIFICATIONS
For STEREO Operation
Power Outputs
P-1030D: More than 150 watts per channel, 4 ohms, 1kHz
More than 100 watts, 8 ohms, 1kHz
P-1060D: More than 300 watts channel, 4 ohms, 1kHz
per
More than 200 watts, 8 ohms, 1kHz
P-1090D: More than 450 watts per channel. 4 ohms. 1kHz
Frequency Response
Total Harmonic Distortion
More than 300 watts, 8 ohms, 1kHz
+0dB, -2.0dB, 8 ohms, 20Hz to 20kHz
Less than 0.01%, at 8 ohms, 1kHz
Less than 0.3%. at 8 ohms, 20Hz to 20kHz
Intermodulation Distortion
input Sensitivity
0.03% using frequencies of 60Hz and 7kHz,
mixed in a ratio of 4:1, at 8 ohms
An input of +4dB (1.23V), ±0.5dB, at 8 ohms,
INPUT LEVEL CONTROL set for maximum level
Input Impedance
10k ohms (unbalanced)
Damping Factor
P-1030D: More than 100, 8 ohms at any frequency
from 20Hz to 1kHz
More than 50, 8 ohms at any frequency
from 20Hz to 20kHz
P-1060D: More than 110, 8 ohms at any frequency
from 20Hz to 1kHz
More than 40, 8 ohms at any frequency
from 20Hz to 20kHz
P-1090D: More than 130, 8 ohms at any frequency
from 20Hz to 1kHz
More than 35, 8 ohms at any frequency
from 20Hz to 20kHz
8. 15Hz high-pass input filters to prevent damage to
speakers from infra-sonic frequencies. When input
modules are used, their filter is modifiable to provide
a higher frequency roll-off for “constant voltage”
system operation when using the optional output
transformers. (Depending on the combination of
output and speaker line transformers, such systems
can approach zero impedance at very low audio
frequencies).
9. Two rear panel ports that accept a wide range of
plug-in modules including electronically balanced
inputs, low/high/bandpass filters, input transformers
and unique combinations of master/slave inputs and
outputs.
10. Barrier strip type screw terminals for positive input
and output connections with bare or lugged wires.
11. Input level attenuators for each channel, rear panel
mounted to discourage tampering. These are
located prior to the first input stage, thus the amplifiers
can accommodate any high level of input signal.
12. The P-1030D is convection cooled while the P-1060D
and P-1090D have 2-speed fans that respond to the
heat sink temperatures. Air flow is from front to back.
The P-1060D and P-1090D each have a front panel
mounted, reusable dust filter that is readily hand
removable and easy to clean with vacuum cleaner.
Output Impedance
P-1030D: Less than 0.08 ohm at any frequency from
20Hz to 1kHz
Less than 0.16 ohm at any frequency from
20Hz to 20kHz
P-1060D: Less than 0.07 ohm at any frequency from
20Hz to 1kHz
Less than 0.2 ohm at any frequency from
20Hz to 20kHz
P-1090D: Less than 0.06 ohm at any frequency from
20Hz to 1kHz
Less than 0.23 ohm at any frequency from
20Hz to 20kHz
Hum and Noise
Phase Shift
110dB below rated output (20Hz to 20kHz)
115dB below rated output (IHF-A weighted)
20Hz to 20kHz, ±15 degrees
Offset Voltage
Less than ±10mV DC
AC Line Voltage
AC Mains, 50/60Hz
Power
P-1030D: 300 VA
Consumption
640 VA maximum at rated output (4 ohms)
P-1060D: 720 VA
1,300 VA maximum at rated output (4 ohms)
P-1090D: 760 VA
Material and Finish
Dimensions
1,740 VA maximum at rated output (4 ohms)
Panel: Aluminum, ABS resin, black
Case: Steel, dark gray
482.6 (W) x 132.7 (H) x 418.5 (D) mm
19.00 (W) x 5.22 (H) x 16.48 (D) inches
Weight
P-1030D: 18kg (39.68 lb.)
P-1060D: 20kg (44.09 lb.)
P-1090D: 21kg (46.30 lb.)
