Infrequent Sound [sex.tex] technology: BELL PSX-4022 2-channel power amplifier, 1995, made in Korea

Link: elektrotanya

Up to now, high-performance output stages were mostly to be found in one of two classic categories: Universal output stages They only take on the task of linearly amplifying different signals. The listener's physiological perception of loudness is generally neglected. System output stages These usually contain special control modules and are therefore limited to operation within a given PA system (processor system). BELL DSC Technology: Through the development of the revolutionary BELL DSC technology - in connection with generously dimensioned power supplies, the sound quality of every good loudspeaker is dramatically enhanced! While loudspeaker systems - regardless of their design - are usually perceived as sluggish, indirect or imprecise when operated with conventional amplifiers, they develop dynamics on PSX AMPLIFIERS that can hardly be described in words.

Power Output (Stereo):
150+150W / 4Ω
100+100W / 8Ω
Power Output (Mono/Bridge):

300W / 8Ω
THD+N: <0.05% Freaqency Response(10Vrms) : 10Hz – 40kHz S/N Ratio (@ LPF) : >110d

- 10 Hz - 30 KHz / 8 ohms frequency response at 10 Vrms

- 10 Hz - 40 KHz / 8 ohms signal-to-noise ratio (IHF-A) 110 dB

Damping Factor (RL=8Ω, f=400Hz) : ≥200
Voltage Gain (Att. Max) : 29dB
Input Impedance: 10kΩ Unbalanced /20kΩ Balanced
Power Consumption (MAX): 450W
Dimensions (W x H x D) mm: 482 x 88 x 395
Weight: 12kg

* rise speed 3 usec

* input sensitivity 1.23 V rms

* signal display L & R LED

* protection circuit L & R LED

* limit indicator LED cooling system

* Heatsink THD + N <0.1%

* Gain control (channel A & B)

* Power switch, illuminated

* LED function displays

* DSC switch (A / B)

* Input: XLR m, XLR f, symmetrical

* Speaker output L / R: for Speakon NL4FC, Sp.-Output Bridge: for Speakon NL4FC