7
Model 3500
OUTPUT POWER (per channel)
Continuous Average Output Power both channels
driven:
8 ohms, 20 Hz-20 kHz 0.1% THD 300 W
1 kHz 1% THD 350 W
4 ohms, 20 Hz-20 kHz 0.1% THD 450 W
1 kHz 1% THD 560 W
2 ohms, 1 kHz 1% THD 700 W
Bridged Mono operation:
16 ohms, 20 Hz-20 kHz 0.1% THD 600 W
1 kHz 1% THD 700 W
8 ohms, 20 Hz-20 kHz 0.1% THD 900 W
1 kHz 1% THD 1120 W
4 ohms, 1 kHz 1% THD 1400 W
Distortion: THD – 20 Hz-20 kHz from 250 milliwatts to rated
power shall be less than 0.1%, 0.015% typical. SMPTE-IMD less
than 0.020% 250 milliwatts to rated power.
Frequency Response: 20 Hz-10 kHz ± 0.1 dB
8 Hz-300 kHz +0/-3 dB
Damping Factor: Greater than 200
Dynamic Headroom: 3.0 dB at 4 Ω
Noise: -100 dB 20 Hz-20 kHz
Sensitivity: 1 V RMS for rated power (8 Ω)
Input Impedance: 20 kΩ balanced or unbalanced
Controls:
Front – Flush detented gain control, recessed
AC switch and AC circuit breaker for each
channel.
Rear – Mono-bridging and accessory module
switches.
Indicators: Bi-color LED indicating DC power –
OK/Protect mode, LED clip indicator, -30 dB
and -6 dB signal level indicators, flashing over-
temp indicators.
Connectors: XLR, ¼” (ring, tip, sleeve) and 3 terminal
barrier strip inputs wired in parallel, 2-terminal
barrier strip and 5-way binding post outputs
wired in parallel, octal input sockets provided
for input transformers or active accessories,
ground lift terminal block.
Cooling: Passive cooling combined with high efficiency
output stage for reduced operating
temperatures. Unique circuit configuration
allows direct metal mounting of output devices
for reduced thermal stress from short-term
peaks.
Amplifier Protection: Indefinite short circuit*, open circuit,
over-temp, ultrasonic and RF protection.
Stable into reactive and mismatched loads.
Inputs protected from overload. All protection
completely independent on each channel.
*Output Averaging short circuit protection
(U.S. Pat. 4,321.554)
Load Protection: Individual channel Load Grounding
output relays provide DC Fault, 3 second
delayed turn on (transient protection), and
excessive low frequency protection, Instant
turn-off, pop suppression and power interrupt
protection is also provided.
Output Circuit Type: Full complementary two-level high
efficiency.
Output Devices (total): 24
Power Supply: Two completely separate power supplies
including AC switches and AC circuit breakers;
only AC cord is common.
Power Requirements: 120 Volts, 60Hz, 12 A
Dimensions: Faceplate 19” × 3.5”
Depth (behind mtg,
with rear support) 17.9”
Depth (chassis) 15.9”
Weight: Shipping (lbs.) 55
Net (lbs.) 50
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