Input Type; Phantom Power; High-Pass Filters; Input Trim And Input Faders - Sound Devices 788T-SSD User Manual And Technical Information

788T/788T-SSD User Guide and Technical Information

Input Type

Select between Mic, Line, or Digital inputs using the MENU key while in the Input Settings Window.
Input Type
Mic
Line
Digital

Phantom Power

Phantom power (48 volts) can be activated individually, for each analog input. Enable or disable
Phantom Power in the Input Settings Window using the Tone key.
Phantom power can be used for both mic- and line-level inputs. Using line-level inputs with microphones
is useful in high SPL environments such as concert recording. Make certain to disable phantom power
with Line-level output devices susceptible to damage from DC.

High-Pass Filters

High-pass fi lters on analog and digital inputs reduce sensitivity to low frequency signals. Pressing
the Multi-Function Rotary Switch will engage or disengage the High-Pass Filter. Turn the Multi-
Function Rotary Switch to select the cut off frequency in 10 Hz steps from 40 Hz to 320 Hz.
If the Setup Menu option INPUT: FRONT PANEL CONTROLS is set to Fader Controls, pressing the
Multi-Function Rotary Switch will toggle between Trim and High-Pass Filter control.
Filter slopes of 6 dB and 12 dB per octave are selectable in the Setup Menu and will apply to all inputs
where the high-pass fi lter have been engaged.

Input Trim and Input Faders

The gain of an input is adjusted by two controls, its Input Trim and its Input Fader. This two-stage
control is identical the to topology of mixing consoles and provides a great deal of fl exibility when
inputs are assigned to tracks. Input Trim is often thought of as a course gain control and Input Fader
is thought of as the fi ne gain control.
From the factory, the front panel Input Gain Controls adjust trim levels. When an input is sent to
a track, the input is sent at the level controlled by the Input Trim. In this factory default mode, the
Input Fader control is set at unity, cannot be controlled, and has no effect on levels.
The Setup Menu option INPUT: FRONT PANEL CONTROLS provides two options, Trim Control or
Fader Control. Selecting Fader Control changes the eight front panel Input Gain Controls to adjust
the fader level on an input. Trim levels are now set using the Multi-Function Rotary Switch from
within the respective input's Input Settings Window. Pressing in on the Multi-Function Rotary
Switch will toggle between Trim control and High-Pass Filter control.
When the CL-8 is attached to the 788T, the behavior of the front panel Input Gain Control adjusts
trim levels and the CL-8 rotary potentiometer controls the Input Fader level.

Input Limiters

Analog inputs incorporate an advanced, analog/DSP-controlled hybrid limiter to prevent input
overload. In normal operation and with proper gain settings, the limiters should rarely engage.
When activated, these limiters will prevent unusually high input signal levels from clipping the
analog input stage of the preamp.
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v. 1.71 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Input Connectors
XLR 1-4, TA3 5-8
XLR 1-4, TA3 5-8
AES3 1-8 (D-Sub 15)
Gain Range (Trim only)
Off (-infinity) 0 dB to 76 dB
Off (-infinity) -25 dB to 50 dB
Off (-infinity) -25 dB to 50 dB.