ARCHITECT’S AND ENGINEER’S
SPECIFICATIONS
The amplifier shall be a dual channel model incorporating all solid state
circuitry. Power output per channel shall be a minimum of 300W (200W)
[100W] with an 8-ohm load, both channels driven, at less than 0.1% THD
and 0.03% IMD at or below rated output; 450W (300W) [150W] with a
4-ohm load, both channels driven, at less than 0.3% THD and 0.03%
IMD at or below rated output; 900W (600W) [300W] BTL (bridged mono)
mode into an 8-ohm load at less than 0.3% THD and 0.05% IMD at or
below rated output.
An optional output transformer MT-1030M (MT-1020M) [MT-1010M] shall
provide electrically isolated outputs for 25V, 50V, 70V and 100V systems
with 300W (200W) [100W] capability at each nominal output voltage.
Hum and noise shall be 110dB below rated output over the 20Hz to
20kHz bandwidth and 115dB IHF-A weighted below rated output.
Frequency response shall be +0dB, -2dB (ref. 1kHz) from 20Hz to
20kHz at any power up to rated output. Damping factor shall be greater
than 130 (110) [100] for any frequency below 1kHz and greater than 35
(40) [50] below 20kHz. Input sensitivity and impedance shall be
1.23V=+4dB (ref. 0dB=0.775V) and 10k ohms. Phase shift shall not
exceed ±15 degrees from 20Hz to 20kHz.
A rear panel Mode Select Switch shall provide the following modes of
operation: STEREO where the two channels operate independently;
PARALLEL where input 1 controls and is fed to both channels and
input 2 is made inoperative; BTL where the two channels are connected
in bridged configuration as a monaural amplifier controlled by input 1 and
input 2 is made inoperative. The rear panel shall have the following: an
input attenuator for each channel; barrier strip type screw terminals for
input and output connections; a jumper to separate the signal ground
from the chassis.
There shall be a rear panel port for each input that accepts optional, plug-
in input modules including balancing and low/high/bandpass filter
modules. All module inputs shall be electronically balanced with
APPEARANCE AND DIMENSIONAL DIAGRAMS
P-1060D/P-1090D
P-1030D
466mm (18.35”)
482.6mm (19.00”)
Note: Dimensions of P-1030D are the same as P-1060D and P-1090D,
and its case and rear panel are slightly different from them.
provisions for optional plug-in input isolation transformer (LT-101
10k ohms). The use of an input module shall automatically provide post
input level control slave outputs.
The front panel shall have one control: a combination power on/off
switch and 20A (13A) [8A] circuit breaker with an integral LED power
on indicator. The front panel shall have the following LED indicators
for each channel: SIGNAL PRESENCE independent of the input level
control that indicates a -30dB (ref. 0dB=0.775V) or greater signal at
the inputs; CLIP that indicates a clipped signal; PROTECT that indicates
excessive heat sink temperatures, short circuits and excessive DC
voltage at the output.
Each channel shall have its own protect sensing and activation circuits
including a relay on each output that disconnects the load in protect
mode. Protect modes shall include heat sink temperatures over 95°C
(203°F), load less than 0.5ohm/short circuit and output DC offset over
±1.2V. The relay shall also provide a 3-second turn on delay before
connecting the amplifier outputs to their loads. A 15Hz high-pass filter
on each input shall limit the reproduction of infra-sonic frequencies.
Power consumption at rated output with 8-ohm loads shall be 760VA
(720VA) [300VA] and maximum for 4-ohm loads or in BTL mode shall be
1,740VA (1,300VA) [640VA]. The P-1090D (P-1060D) shall be forced
air cooled with 2-speed exhaust fans and a hand removable, washable,
front panel air filter. [The P-1030D shall be convection cooled].
The amplifier shall be enclosed in a durable, painted, dark gray, 1.0mm
gage steel enclosure mechanically reinforced by a 2.0mm (0.787”) thick
aluminum front panel with a black ABS resin finish. Overall dimensions
shall be 482.6W x 132.7H x 418.5Dmm (l9H x 5.22W x 16.48Din.).
Depth behind the front panel, including rear panel hardware, shall be
368.5mm (14.51 in.). Weight shall be 21kg (46.3lb.) (20kg (44.1 lb.))
[18kg (39.68 lb.)]. Standard E.I.A. equipment rack mounting shall be
provided.
The amplifier shall be the TOA model P-1090D (P-1060D) [P-103001].
OPTIONAL MATCHING TRANSFORMERS
MT-1010M/1020M/1030M
Output Transformer
SPECIFICATIONS
Model No.
MT-1010M
MT-1020M
MT-103OM
Applicable
P-1030D
P-1060D
P-1090D
Amplifier
Capacity
100W
200W
300W
Primary
8 ohms
8 ohms
8 ohms
Impedance
Secondary
100 ohms (100V)
50 ohms (100V)
33 ohms (100V)
Impedance
50 ohms (70V)
25 ohms (70V)
17 ohms (70V)
25 ohms (50V)
13 ohms (50V)
8.3 ohms (50V)
6.3 ohms (25V)
3.1 ohms (25V)
2.1 ohms (25V)
Frequency
50Hz to 20,000Hz ± 3dB
Response
Weight
2.4kg (5.29 Ibs.)
3.2kg (7.05 Ibs.)
5.2kg (11.46 Ibs.)
*Specifications are subject to change without notice
TOA Corporation
Printed in Japan (409) 833-64-205-90
