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Macro-Tech 24x6 & 36x12 Power Amplifiers

6 Specifications

The following specifications apply to 120 VAC, 60 Hz units in

stereo mode with 8 ohm loads and an input sensitivity of 26

dB unless otherwise specified.

120 VAC, 60 Hz Units: These units have a dedicated trans-

former for 120 VAC, 60 Hz power mains.

International Units: These units have dedicated transform-

ers for various AC mains voltages and line frequencies.

Performance

Frequency Response: ±0.1 dB from 20 Hz to 20 kHz at 1

watt (see Figure 6.1).

Phase Response: ±10° from 10 Hz to 20 kHz at 1 watt

(see Figure 6.4).

Signal-to-Noise Ratio: (A-weighted) Greater than 105 dB

below rated continuous average output from 20 Hz to 20

kHz. (No weighting) 100 dB below rated continuous aver-

age output from 20 Hz to 20 kHz.

Harmonic Distortion (THD): Less than 0.05% at rated

output from 20 Hz to 1 kHz, increasing linearly to less than

0.1% at 20 kHz.

IM Distortion (IMD): Less than 0.05% from 10 milliwatts

to full rated output.

Damping Factor: Greater than 1,000 from 10 Hz to 400

Hz (see Figure 6.2).

Slew Rate: Channel 1, greater than 30 volts per microsec-

ond; Channel 2, greater than 13 volts per microsecond.

Voltage Gain: 20:1 ±3% or 26 dB ±0.25 at +26 dB input

sensitivity and the maximum level setting. The sensitivity

varies by model and channel when the input sensitivity is

set to 0.775 V as listed below:

Macro-Tech 24x6 Channel 1 (2400):

83:1 ±12% or 38 dB

±0.5 dB.

Macro-Tech 24x6 Channel 2 (600):

54:1 ±12% or 35 dB

±0.5 dB.

Macro-Tech 36x12 Channel 1 (3600):

124.6:1 ±12% or

41.9 dB ±1.0 dB.

Macro-Tech 36x12 Channel 2 (1200):

64:1 ±12% or 36 dB

±0.5 dB.

Power

Output Power:

The following are guaranteed minimums

for standard 1 kHz power at 1 kHz and 0.1% or less THD.

120 VAC, 60 Hz Models

Macro-Tech 24x6

Channel 1 (2400):

1050 watts into 2 ohms.

800 watts into 4 ohms.

520 watts into 8 ohms.

Channel 2 (600):

400 watts into 2 ohms.

325 watts into 4 ohms.

225 watts into 8 ohms.

Macro-Tech 36x12

Channel 1 (3600):

1800 watts into 2 ohms.

1565 watts into 4 ohms.

1120 watts into 8 ohms.

Channel 2 (1200):

675 watts into 2 ohms.

480 watts into 4 ohms.

310 watts into 8 ohms.

International Models

Macro-Tech 24x6

Channel 1 (2400):

895 watts into 2 ohms.

745 watts into 4 ohms.

510 watts into 8 ohms.

Channel 2 (600):

380 watts into 2 ohms.

335 watts into 4 ohms.

230 watts into 8 ohms.

Macro-Tech 36x12

Channel 1 (3600):

1460 watts into 2 ohms.

1300 watts into 4 ohms.

965 watts into 8 ohms.

Channel 2 (1200):

520 watts into 2 ohms.

420 watts into 4 ohms.

285 watts into 8 ohms.

It is extremely important to have adequate AC power

available. Power amplifiers cannot create energy—they

must have the required voltage and current to deliver the

undistorted rated wattages you expect.

Load Impedance: Rated for 16, 8, 4, and 2 ohm use only.

Safe with all types of loads, even reactive ones.

Required AC Mains: All units require 90 watts or less at

idle. See Section 7 for detailed information on AC power

draw, current draw and thermal dissipation.

Controls

Enable: A front panel pushbutton used to turn the amplifier

on and off.

Level: A 31-position detented rotary potentiometer for

each channel located on the front panel used to control

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