Threshold Model 400a specifications

Category : Power amplifiers

General

Connections

Tech nical data

Manufacturer:Threshold
Model:400A
Dimensions: 48.26 cm W x 39 cm H x 28 cm D
Weight: 23 kg

list the connection options here, if known.

Rated power:
- 100 watts per channel, both channels powered at 8 ohms, 20 Hz to 20 kHz at 120 Volt line source.
Harmonic and intermodulation Distortion:
- not greater than 1 percent, Total harmonic or intermodulation distortion at rated power, decreasing monotonically with lower power. Distortion is practically immeasurable at low levels. Harmonic distortion components are dominated by the 2nd and 3rd harmonics. Intermodulation sidebands 1st and 2nd order. Higher-order distortion components are negligible below 40 kHz.
TID:
- Transient intermodulation distortions Sidebands are at least-75dB below a 10 Watt output signal consisting of a 1.5kHz sine mixed linearly with -20 dB 80 kHz sine. the sidebands are symmetrical about the central decreasing frequency to about -90 dB by the seventh um.
Pick-up time:
- Front and rear edges 1 microsecond.
Rise rate Capacitances:
- Maximum voltage swing rate of each channel 50 volts per microsecond. Maximum power consumption swing rate of each channel is 25 amperes per microsecond.
Loop propagation time:
- Signal propagation time appear at the base of the input differential transistors 20 microseconds.
Current Output Capaciti es:
- Maximum instantaneous output current 20 amps per channel. Maximum continuous output current of 5 amps per channel.
Voltage output Capaciti es:
- Maximum voltage swing - + 50 volts per channel.
Frequency bandwidth:
- +0, -3 dB 1 Hz to 250 kHz at low levels. - 0 dB 20 Hz to 20 kHz at 200 watts per channel.
Input impedance:
- 75 kOhm
Attenuation factor:
- 100 Constant from DC to 20 kHz measured at output terminals
Noise level:
- 5 millivolts at the outputs.
Displays:
Individual peak vs high output level readings for each channel.

100 watts per channel, both channels powered at 8 ohms, 20 Hz to 20 kHz at 120 Volt line source.

not greater than 1 percent, Total harmonic or intermodulation distortions at rated power, decreasing monotonically with lower power. Distortion is practically immeasurable at low levels. Harmonic distortion components are dominated by the 2nd and 3rd harmonics. Intermodulation sidebands 1st and 2nd order. Higher-order distortion components are negligible below 40 kHz.

Transient intermodulation distortion sidebands are at least-75dB below a 10 Watt output signal consisting of a 1.5kHz sine mixed linearly with -20 dB 80 kHz sine. the sidebands are symmetrical about the central decreasing frequency to about -90 dB by the seventh um.

Leading and trailing edge 1 microsecond.

Maximum voltage swing rate of each channel is 50 volts per microsecond. Maximum power consumption swing rate of each channel is 25 amperes per microsecond.