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6. TECHNICAL SPECIFICATIONS
Descriptions PS4LA Active PS3A Active
Active System type Bi-Amp. with analog processor Bi-Amp. with analog processor
LOW - RMS Output Power 150W RMS Class AB 70W RMS Class AB
HIGH - RMS Output Power 50W RMS Class AB 50W RMS Class AB
Max SPL at 1m 118.5dB SPL calculated 115.5dB SPL calculated
Frequency Response 55Hz / 20kHz +/-10dB 60Hz / 20kHz +/-10dB
Impedance Low - High Low 4 Ohm - High 8 Ohm Low 4 Ohm - High 8 Ohm
Crossover Frequency 2500Hz 6 / 12dB/Oct. 3000Hz 6 / 12dB/Oct.
Protection Low - High Analog Limiter / Compressor Analog Limiter / Compressor
Low - Frequency 12" / 318mm - 2" voice coil 12" / 318mm - 2" voice coil
High - Frequency Aluminum Driver 1" Voice Coil Aluminum Driver 1" Voice Coil
Horn Coverage H
xV 90 H x45 V
Input Sensitivity Line + 4dB / 1.23 V
Input Impedance 30k Balanced -15k Unbalanced
Connectors Input with Jack / Link with XLR Input with Jack / Link with XLR
Plastic Reinforced Cabinet Trapezoidal & Monitor shape
Hardware Suspension Six suspension point
Amplifier Protections Soft Start - Short Circuit - DC voltage - Thermal Protection
External Control Volume- Clip - Ground Switch Volume- Clip - Ground Switch
Power Supply 230Volt / 115Volt 50 / 60Hz
Dimensions H W D
Net Weight lbs/kg 19.40kg / 42.76lbs 19.2kg / 42.32lbs
Gross Weight lbs/kg 22.05kg / 48.61lbs 21.85kg / 47.17lbs
Shipping Volume 4.83CFT 4.83CFT
Descriptions PS4L Passive PS3 Passive
Passive System type 2-way vented box 2-way vented box
Continuos Power Handling 180Watt AES Standard 120Watt AES Standard
Peak Power Rating Peak 360Watt Peak 240Watt Peak
Sensitivity at 1W,1mt 96 dB SPL 95 dB SPL
Max SPL at 1mt 118.5 dB SPL Calculated
Frequency Response 60Hz / 20kHz +/-10dB
Impedance 8 Ohm Nominal
Crossover Frequency 2250Hz 6 / 12dB/Oct
Low - Frequency 12" / 318mm - 2" voice coil
High - Frequency Driver 1" Voice Coil
High Frequency Protection Electronic Dynamic Protection
Dimensions HxWxD 660mm x396mmx 384mm (26" x15.6" x15.1")
Net Weight lbs/kg 17.12kg / 37.74lbs
Gross Weight lbs/kg 22kg / 48.5lbs
Volume
PS4HA Active
Bi-Amp. with DSP processor
300Watt RMS Class H
100Watt RMS Class AB
121.5dB SPL calculated
50Hz / 20kHz +/-10dB
Low4Ohm-High8Ohm
2000Hz - DSP Processor
DSP Lim./ Comp. each sections
12" / 318mm - 2.5" voice coil
Titanium Driver 1.35" Voice Coil
Input with Combo/ Link with XLR
Mic/Line Vol.-Clip-Ground Switch.
660mm 396mm 384mm (26" 15.6" 15.1")
23.38kg / 51.54lbs
26.06kg / 57.38lbs
4.83CFT
PS4H Passive
2-way vented box
250Watt AES Standard
500Watt
97 dB SPL
121 dB SPL Calculated
55Hz / 20kHz +/-10dB
8 Ohm Nominal
2000Hz 12 / 24dB/Oct
12" / 318mm - 2.5" voice coil
Titanium Driver 1.35" Voice Coil
Electronic Dynamic Protection
18.75kg /41.34lbs
22kg / 48.5lbs
4.83CFT 4.83CFT
115 dB SPL Calculated
65Hz / 20kHz +/-10dB
8 Ohm Nominal
3000Hz 6 / 12dB/Oct
12" / 318mm - 2" voice coil
Driver 1" Voice Coil
Electronic Dynamic Protection
17.3kg / 38.13lbs
19.95kg / 43.98lbs
4.83CFTShipping
The AES 2 - 1984 Standard specification by Audio Engineering Society, is representative and commonly used for the measure in
Professional Sound Reinforcement. It is defined as the square of the RMS voltage generated with a pre-defined and band-passed
Pink Noise Signal, applied continuously for 2 hours, on the assembled speaker cabinet.
In this way, the declared power of ALTO passive speaker cabinet, is comparable to the RMS voltage value, measured on the
equivalent power amplifier for the same value of impedance.