Specifications

USB 7132 / 7133 / 7134

Professional Power Amplifier

CALCULATING IMPEDANCE

Measured in ohms, impedance is a measure of AC resistance. Loudspeakers generally come in 16, 8

or 4 ohm varieties. Amplifiers have a low limit to what impedance they can drive without being

overloaded, there is not usually an upper limit. The PA series can drive any impedance between an

open circuit and no less than 2 ohms when in stereo and between an open circuit and no less than

4 ohms when bridged.

If the speakers are wired in series, just add their impedances together. If they are in parallel there is

a simple rule: two impedances the same will equal half the individual impedance, for example 8 & 8

= 4 or to take this further, four 8 ohm drivers = 2 ohms (16 & 16= 8 / 8 & 8 = 4 / 4 & 4 = 2).

Table for specification

ITEMS CONDITIONS USB 7132 USB 7133 USB 7134

8 Ohms 0.1% 200W RMS 300W RMS 450W RMS

THD 1KHz x 2 Channel x 2 Channel x 2 Channel

4 Ohms 0.1% 300W RMS 400W RMS 700W RMS

THD 1KHz x 2 Channel x 2 Channel x 2 Channel

OUTPUT 2 Ohms 0.1% 400W RMS 500W RMS 900W RMS

POWER THD 1KHz x 2 Channel x 2 Channel x 2 Channel

Bridged Mono

8 Ohms 0.1% 600W RMS 850W RMS 1400W RMS

THD 1KHz

Bridged Mono

4 Ohms 0.1% 800W RMS 1000W RMS 1800W RMS

THD 1KHz

Power 1W

0.2% 0.25% 0.3%

DISTORSION

4 Ohms 1KHz

Rated power

0.03% 0.055% 0.06%

4 Ohms 1KHz

INPUT Output rated power

775 ±30mV 950 ±30mV 1400 ±30mV

SENSITIVITY (Level at Max.)

VOLTAGE GAIN Output rated power 31dB 31dB 31dB

Rated power 1 KHz

0.2% 0.25% 0.3%

S/N RATIO

+A (Level at Mid)

FREQUENCY 1 KHz=0dB/-0.5dB

10--30K 10--30K 10--30K

RESPONSE (Level at Max.)

Rated power

67 dB 70 dB 65.5 dB

CH. SEPERATION

4 Ohms 1KHz