New Higher-Power
pro-Series Amplifier - the most powerful Heathkit amp ever.
Heath Company helped
pioneer the field of high-power amplifeiers. Now, advances in high-power output
devices, new design technology and extensive listening tests make the Heathkit
AA-1800 Pro-Series Audio Amplifier one
of the best high-power amps available. The wider dynamic range achieved by new
recording techniques require power and headroom to reproduce the full sound
spectrum, without clipping peaks. People who listen to the AA-1800 find
accurate, clearly defined music - at a wallet-pleasing price.
From the power cords
to the speaker outputs, more value is built into the AA-1800. a wire-frame
chassis, similar to those used in computers, makes the AA-1800 a more durable
unit in a smaller package, with excellent ventilation. This new chassis
simplifies the easy 24-hour kitbuilding experience, too. Two line cords with
remote AC switching relieve your preamp from the need to switch high currents.
Convection cooling means no fans and quieter operation. Individually fused
power supply lines, along with rugged output devices, eliminate electronic
dissipation limiters - which can cause tweeter-damaging clicks and pops. LEDs
for each channel indicate full easy access.
Complete
speaker protection includes a speaker
turn-on delay - which keeps power-up and power-down transients away from the
speakers. In fact, the AA-1800's speaker protection system is so efective,
we've applied for a patent.
Thermal circuit
breakers protect the system from excessive heat.
Designed in the
striking pro-Series style, the AA-1800 can be mounted in any EIA Standard
19-inch rack, such as the AE-1705 Pro-Series Rack. Large side handles are
provided for easy rack mount installation.
Specifications
Frequency
Response: 20 Hz - 20 kHz ±0,1 dB; 3 Hz - 100 kHz ±1 dB (at 1 watt)
Total Harmonic
Distortion Plus Noise: 0,025% (from 250
mW to 250 Watts)
TIM (DIM 100): less than 0,03% (3,18 kHz square wave and 15
kHz sine wave mixed 4 to 1, f[c]=100 kHz, measured at rated output.
Hum and Noise
(unweighted): -85 dB (1 watt ref.)
Full Power Trip Frequencies of Speaker Protection
Circuit: less than 16 Hz, more than 30
kHz.
Low Frequency
Damping Factor: greater than 100
Input
Sensitivity: 110 mV ( for 1 W at 8 Ω)
Input
Impedance: 20 k Ω, shunted by less 50 pF
Channel
Separation: 60 dB min. 20 Hz to 20 kHz
Power
Requirements: 120 V AC, 60 Hz
Power
Consumption: 1200 Watts
Dimensions (W x H x
D): 472,6 x 177,5 x 415,5 mm (19"
x 7" x 16,75")
Weight: 22,68 kg ( 50 lbs)
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