ALTO OEX900 900W Complete Portable PA System

ALTO OEX900 Details

Alto reinvents the self contained PA system solution with the introduction of the Orient Express. Until now, self-contained PA systems have had limited acceptance among a wider range of performers. Often in the race to limit the size and cost of the overall system, not enough attention was paid to the performance of the individual components. Self-contained PA systems were often limited by low output power, inferior loudspeaker performance, underwhelming low frequency response and limited functionality of the mixer.

Alto set about solving the single system solution with the introduction of Orient Express systems. Available from an ultra-compact 400-watt four-channel package to a 1000-watt solution with 15-inch subwoofer, satellite speakers, 12-channel mixer with integrated DSP. There are Orient Express systems built for public speaking applications, for solo performers, duos, trios through to systems for small to mid size bands needing maximum performance from a single highly mobile packaged system.

OEX900** Features

* 3-way powered system: Bi-amp plus passive crossover into satellite
* LOW output power: 400W RMS(EIAJ) class AB
* MID-HIGH output power: 190W + 190W RMS (EIAJ) class AB
* Peak power rating: 980W peak
* Max SPL at 1mt: 119.5 dB continuous -122.5dB Peak
* Frequency response: 45Hz - 20k Hz @-10dB
* Impedance Low-Mid/High: Low 4 Ohm-Mid/High 8Ohm
* Crossover Frequencies: Active 125Hz at 12dB/Oct.-Passive 3KHz at 12 dB/Oct with Electronic Dynamic Protections
* Amplifier Protections Low-Mid/High: Soft start-short circuit - DC output voltage-thermal protection-subsonic filter at 30Hz-24dB/Oct-Limiter/Compressor
* Low Frequency device: 15"/385mm-2.5" voice coil
* Mid Frequency device: 2 x 6.5"/165mm - 1" Voice Coil
* High Frequency device: 1" compression driver - 1" voice coil
* Horn coverage: 80H°x 80V°
* Plastic Reinforced cabinet

ALTO OEX900 Specs

Mono input channels
Microphone Input Electronically balanced, discrete input configuration
Frequency response 10Hz to 55kHz,+/-3dB
Distortion(THD&N) 0.04% at +4dBu,1kHz
Gain 30dB
SNR(Signal to Noise Ratio) >94dB
Line input Electronically balanced
Frequency response 10Hz to 55kHz,+/-3dB
Distortion(THD&N) 0.04% at +4dBu,1kHz
Gain 10dB
Stereo input channels
Line input Unbalanced
Frequency response 10Hz to 55kHz,+/-3dB
Distortion(THD&N) 0.04% at +4dBu,1kHz
Impedances
Microphone Input 1.4kOhm
Channel Insert return 2.5kOhm
All other inputs 10kOhm or greater
Tape out 1kOhm
All other outputs 120Ohm
Equalization
Hi shelving +/-15dB@12kHz
Mid bell +/-15dB@2.5kHz
Low shelving +/-15dB@80Hz
DSP Section
A/D and D/A converters 24bit
DSP resolution 24bit
Type of effects Hall,Room,Vocal&Plate REVERBS
Mono & Stereo DELAY (max DELAY TIME 650ms)
Chorus,Flanger & Reverb MODULATIONS
REVERB+DELAY,REVERB+CHORUS,
REVERB+FLANGER combinations
Presets 256
Controls 16-position PRESET selector
16-position VARIATION selector
CLIP LED
MUTE SWITCH with LED indicator
Main Mix Section
Noise(Bus noise) Fader 0 dB,channels muted:-85dBr (ref.:+4dBu)
Fader 0 dB,all input channels assigned and set to
UNITY gain:-81dBr(ref.:+4dBu)
Max output +27dBu balanced
Controls +22dBu unbalanced, 1/4" jacks
AUX Sends max out +22dBu

Speaker Section
15
Physical
3-Way Powered System
Dimension(W*D*H)
Low Output Power
Net Weight
Bi-Amp plus passive crossover into Satellite
MID-HIGH Output Power
Gross Weight
250W RMS Class H
Peak Power Rating
150W+150W RMS Class AB
Max SPL at 1mt
1200W Peak
119.5dB Continuous - 122.5dB Peak ( calculated )
Frequency response 45Hz- 20kHz @ -10dB
Impedance Low-Mid/High Low 4ohm - Mid/High 8ohm
Crossover Frequencies Active 125Hz at 12dB/Oct - Passive 3000Hz at 12dB/Oct
with Electronic Dynamic Protections.
Amplifier Protections
Low-Mid/High
Soft Start - Short Circuit - DC output voltage
-Thermal Protection - Subsonic Filter at
30Hz - 24dB/Oct. - Limiter / Compressor.
Low Frequency Device 15" / 385mm - 2.5" Voice Coil
Mid Frequency Device 2 x 6.5" / 165mm - 1.5" Voice Coil
High Frequency Device 1" Compression Driver - 1" Voice Coil
Horn Coverage H x V 80 H x 80 V
Plastic Reinforced Cabinet Polypropilene
1060*700*700mm
43.04kg
60.04kg

ALTO OEX900 Documentation

OEX900 Manual (pdf)

Other views of ALTO OEX900 (Click to enlarge):

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