amplifiers - line amplifiers
PX2100 / 2200 / 2300 / 2400 - 120/240/360/480 W 100V Line Power Amplifiers with AFS
Introduction
PX2000 series of power amplifiers are equipped with AFS ( auto fault sensor ) which generate pilot tones internally and automatically diagnose and detect faulty condition that may occur at the output end. Pilot tones are generated at intervals to avoid straining the power packs and this shall prolong the life span of the unit.
PX series of AFS amplifiers shall be linked to Amperes AX700 changeover unit for standby amplifier takeover in the event that a duty unit fails, enabling automatic amplifier fault changeover setup.
Features
- Incorporating Auto Fault Sensing ( AFS ) circuitry for self monitoring of its output
- Switchable Pilot Tone for normal operation without AFS
- Interval PT generation to avoid continuous loading of the amplifiers
- Available in various ratings; 120W to 480W 70/100V line
- 4 Ohm speaker connection available with 25V output
- Thermal protection by muting input signal ( typically 85 deg at heat sink )
- Momentary short circuit protection
- Temperature dependent dual speed cooling system
- Manual reset circuit breaker for AC mains and DC input
- Balanced input signal with gain control and selectable grounding option
- AC and DC operation for uninterrupted operation during power failure
Technical Specifications
| PX2100 | PX2200 | PX2300 | PX2400 |
|
Rating |
120W | 240W | 360W | 480W |
Operating voltage |
230 - 240V ac / 24V DC backup | |||
24V DC requirement |
8A | 19A | 23A | 29A |
Load consumption at ac mains |
1.4A | 3A | 3.4A | 4.5A |
Standby consumption at ac mains |
0.4A | |||
Input sensitivity |
1V / 10 K Ohm | |||
Input gain control |
-15 dB to 0 dB | |||
Input connection |
XLR balanced line input | |||
Output voltage ( 4 Ohm ) V rms |
22 | 31 | 38 | 44 |
Output impedance ( 70 V line ) |
42 | 21 | 13 | 10.2 |
( 100V line ) |
83 | 42 | 27.8 | 20.8 |
Frequency response |
180 - 17 KHz (+/- 3dB at 1 KHz) with low cut | |||
S/N ratio |
> 60 dB @ 1 KHz | |||
Protections |
Thermal, momentary output short circuit, | |||
| AC and DC circuit breaker, input signal clip | ||||
Indicators |
AC mains, Clip, Protect, Input level | |||
Cooling system |
Dual speed fan with heat sensing | |||
FAULT DETECTIONS |
||||
Detection intervals |
10 seconds | |||
Detection response |
15 - 25 seconds | |||
Detection method |
Internal Pilot Tone generated at 20 KHz | |||
Failure recovery time |
20 seconds max | |||
Failure output |
Dry contact ( NO at 3A rating ) | |||
Dimensions ( WxHxD ) mm |
PX2100 : 482 x 88 x 300 mm | |||
| PX2200 / 2300 / 2400 : 482 x 133 x 300 mm | ||||
Weight ( kg ) |
11.1 | 20.6 | 21.3 | 25.4 |