Alto APM80.1000 User Manual download pdf (Page 20)

5. TECHNICAL SPECIFICATION

Mono input channels

Stereo input channels

Impedances

Equalization

DSP Section

Microphone input

electronically balanced, discrete input configuration

Frequency response

10Hz to 55kHz, + 3dB

Distortion (THD & N)

0.006% at 4dBu, 1kHz+

Gain 50dB (MIC)

SNR (Signal to Noise Ratio)

>90dB

Line input

electronically balanced

Frequency response

10Hz to 55kHz, 3dB

Distortion (THD & N)

0.04% at 4dBu, 1kHz+

Gain

30dB

Line input

Unbalanced

Frequency response

10Hz to 55kHz, 3dB

Distortion (THD & N)

0.006% at +4dBu, 1kHz

Microphone input

1.4kOhm

Channel Insert return

2.5kOhm

All other inputs

10kOhm or greater

Tape out

1kOhm

All other output

120Ohm

Hi shelving

15dB @12kHz

Mid bell

15dB @2.5kHz

Low shelving

15dB @ 80Hz

A/D and D/A converters

24 bit

DSP resolution

24 bit

Type of effects

Hall, Room, Vocal & Plate REVERBS

Mono & Stereo DELAY (max DELAY TIME 650ms)

Chorus, Flanger & Reverb MODULATIONS

REVERB+DELAY, REVERB+CHORUS,

Presets

256

Controls

16-position PRESET Selector

16-position VARIATION selector

CLIP LED

MUTE SWITCH with LED indicator

REVERB+FLANGER combinations

Main Mix Section

Noise (Bus noise) Fader 0 dB, channels muted: 85dBr (ref.:+4dBu)

Fader 0dB, all input channels assigned and set to

UNITY gain: 71dBr (ref.:+4dBu)

Max output

+27dBu balanced ,

22dBu unbalanced, 1/4" jacks+

AUX Sends max out

+22dBu

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