INS and Outs, Effect Loop HOOK-UP | Tech 21 Acoustic DI specs

THE INS AND OUTS.

TURN ON FIRST. TURN OFF LAST. To avoid unwanted and potentially speaker-damaging “pops” when connecting or disconnecting any equipment, follow Standard Audio Procedures: Always mute mixing board and/or turn down amp volume before plugging or unplugging !

INPUT: 1/4”, 4.7megOhm, instrument level. The unusually high impedance was designed with piezo pickups in mind to provide maximum output and dynamics. Switches battery power on/off. To avoid battery drain, unplug when unit is not in use. AND... DON’T FORGET TO MUTE !

INPUT TO XLR/“Effect Return:” This triple-function 1/4” input con- verts a high impedance instrument signal to a low impedance, balanced line through the XLR Output. This input bypasses all the circuitry, which enables the unit to be used as a standard transparent DI.You can also create an effect loop by utilizing this input as an “Effect Return” in conjunction with the 1/4” Output. See illustration below.

1/4” OUTPUT/“Effect Send:” Unbalanced low Z output. Sends signal to your amp or power amp. It can also be used with a home recorder should an XLR input not be available. Also functions as an “Effects Send” when utilized in conjunction with the Input to XLR. See illustration below.

BALANCED XLR OUTPUT: Balanced low Z output sends signal to mixing console/recorder. Switchable between 0 and -20dB by using the -20 dB Pad switch. Also accepts phantom power (see page 4).

EFFECT LOOP HOOK-UP:

OUTPUT	INPUT	OUTPUT		INPUT
	CHORUS
	TO		TM	INPUT TO XLR
	TO
	MIXER	XLR
		OUTPUT

ACTIVE SWITCH: Active, LED will be on. All controls will respond to their settings. Inactive, LED will be off and SansAmp Acoustic DI is in bypass mode. It then functions as a transparent direct box and will not sonically alter the instrument signal.

-20dB PAD: Attenuates the volume of the XLR Output between 0 and

-20dB. If you’re using a mixer with a mic level input, be sure to pad at -20dB so as not to overdrive the input. To obtain a better signal to noise ratio, use the 0dB position. Just be sure your mixer can accept a line level (0dB) signal input (not all can).

PHANTOM & GROUND CONNECT SWITCH: When

engaged, the ground connects, and unit will accept phantom power through the XLR Output. Disengaged, the ground of your stage system and other interconnected gear is lifted (isolated) from the ground of the mixing console.

PHANTOM POWER OPERABILITY eliminates the need for an external power supply. If you are using a suitably equipped mixer, consult its owner’s manual for set-up instructions. For live and studio use, let the engineer know your SansAmp Acoustic DI is phantom power operable.

NOTE: When lifting the ground, phantom power disconnects, and battery (if installed) becomes activated. While operating under phantom power, we recommend keeping a 9V alkaline battery installed at all times to avoid the previously mentioned “pops” when lifting the ground (see page 3).