PA-4240 FX

Item number: 101807900

+ + + EXPIRING + + +

Analog 4-channel power amplifier (100V power amplifier) with 4 x 240W, 230VAC/24VDC

Category: Analog Power Amplifiers


1.829,00 €

including 19% VAT. , no shipping costs

Recommended retail price: 1.829,00 €

Shipping time: 2 - 3 workdays

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note_phoenix

PA-4240 FX


The analog power amplifier PA-4240 FX is a 4-channel power amplifier with 4 x 240W/100V sine output power and AC/DC power supply 230VAC / 24VDC.

ON BOARD: Per channel three symmetrical inputs PROGRAM / PRIORITY / TEST, auto-manual priority, distortion factor: 0.2%.

The power amplifiers of the PA-FX series have been designed for use in the public address range, e.g. designed for the sounding of office buildings, shopping centers, supermarkets, bars and public facilities, to operate with a 100V speaker line.

The main advantage of a 100V system is the reduced cross section of the speaker cords compared to low impedance speaker lines. This is because the higher output voltage allows much higher electrical current flow with the same power. Another advantage of the amplifiers is the ability to cover voltage drops when using long speaker cables and to allow adaptations of different speaker types to a 100V line.

In all PA-FX amplifiers, the power amplifier is operated by a low voltage, which not only allows the use of mains voltage 230VAC, but also 24VDC emergency power supply (in case of power failure, the amplifier is automatically switched to emergency power operation (battery 24 V)).

Voltage switching between mains and emergency power supply takes place automatically. The power amplifier has a specially wound 100V toroidal transformer, which allows full acoustic operation in high frequency ranges.

The FX Series power amplifiers utilize a modified push-pull circuit. This has the advantage that it runs like a bridge circuit, reducing the damping factor by about half. In contrast to conventional push-pull circuits, the Phoenix PA-FX power amp is completely complementary and, among other benefits, has a lower harmonic distortion.

The amplifiers are equipped with priority inputs (PRIORITY), which turn on automatically as soon as additional signals are detected. Also, the power amplifiers have a test input (TEST-INPUT, balanced) for connecting a 20 kHz-22kHz pilot tone for function monitoring. Two balanced inputs (per channel) allow the use of long AF links without the risk of mains humming or ground loops, and allow easy connection of separate signal sources, e.g. music / call / alarm.

Subsonic filters protect the speakers, which in this type of installation often have a relatively low quality in the LF range. This also protects the amplifiers from saturation of the output transmitter at low frequencies.

The forced cooling fan constantly adjusts its speed to the temperature of the heat sink. Therefore, when the amplifier is operating at low volume, the fan operates at minimum speed or stops completely, minimizing the ingress of dust and increasing the lifespan of the amplifier.


note_phoenix

Specials


  • Analog 100 V power amplifier
  • 4 x 240W / 100V sinus output power
  • 4-channel
  • 3 symmetrical inputs PROGRAM / PRIORITY / TEST
  • Auto-manual-priority
  • AC/DC power supply 230VAC/24VDC
  • Subsonic filter
  • Forced cooling fan

note_phoenix

Technical Details
 

Ambient temperature -10 to + 50 C
Colour black
Control LEDs signal, clip, ready, protect
Dimensions 482 mm (W) x 88 mm (H) x 340 mm (D), (19"-2 HU)
Filter 240 Hz
Frequency response 32 Hz to 42,000 Hz (-3 dB)
Fuse AC 3.6A
Fuse DC 20 A
Ground lift / limiter Yes / Yes
Network filter 80000 uF
Output 4 x 240 watts sinus (max 120-130V output)
Power consumption AC 230 V AC, (Idle 550 mA), 1/8 Power 4.7A, 1/3 Power 6.5A
Power consumption DC Idle 1.3A, 1/8 Power 14A, 1/3 Power 24A, Sine 33A
Power of the final transistors 2400 watts
Power supply 230 V AC, 50/60 Hz or 24 V DC +/- 17%
Priority Priority input with voice over or contact
Priority input (LINE) balanced, (LINE 1,23 V, +4 dB) 20kOhm
Program input (LINE) balanced, (1,23V, + 4dB), 20kOhm
Protection circuits Limiter, short circuit, overheating, overload, softstart, subsonic
Signal to Noise Ratio over 90 dB
Slew rate 25V / us
Speaker outputs, floating 4 x 100 V (41,7 Ohm) - 4 x 70 V (20,4 Ohm) - 4 x 8 Ohm (43,8 V)
Subsonic filter 32 Hz, 24 dB / oct
Test input (LINE) balanced, (1,23V, +4 dB), 20kOhm
THD below 0.2% (1kHz, 100V OUT, 80% power)
Weight about 28 kg

 


 


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