SERVICE FOR YOUR NADY AUDIO PRODUCT (U.S.) Should your NADY AUDIO product require service, please contact the Nady Service Department via telephone at (510) 652-2411, or e-mail at service@nady.com. (International) For service, please contact the NADY AUDIO distributor in your country through the dealer from whom you purchased this product. OWNER'S MANUAL DO NOT ATTEMPT TO SERVICE THIS UNIT YOURSELF AS IT CAN BE DANGEROUS AND WILL ALSO VOID THE WARRANTY. ADI-1 NADY SYSTEMS, INC. · 6701 SHELLMOUND STREET, EMERYVILLE, CA 94608 Tel: 510.652.2411 · Fax: 510.652.5075 · www.nady.com Active Direct Inject Box 10/2/03, 9:53 AM ADI1manual 1 Introduction Congratulations for purchasing the ADI-1 Active Direct Inject Box. This unique unit is the ultimate, multi-functional active DI box. The ADI-1 is indispensable for solving many audio mismatch and hum problems in numerous stage and studio applications. · Eliminates impedance mismatch problems and converts any sound source at almost any level (from guitar to speaker inputs) into a clean, powerful hum-free, noise-free and interference-free balanced signal perfect for even extremely long cable runs · Full-featured controls and connections include On/Off, Ground Lift, and Guitar/ Speaker Source Select input attenuation switches; unbalanced 1/4" TS Input and Parallel Link Output jacks; and servo-balanced XLR Output jack. · Parallel link output allows ultimate hookup flexibility by enabling applications such as connection to the input of the backline or monitor amplifier. · No compromise circuit design and stringent component selection provide absolutely flat, full frequency response across the entire audio spectrum, and negligible distortion for the most natural, powerful audio available. · Portable aircraft aluminum extruded case for ultimate roadworthiness, long life and reliability · Powered either by console's +48V phantom power or internal 9V battery Controls and Connections (2) (3) (4) (5) (1A) (1) (1) ON/OFF BUTTON When pressed, this enables the 9V battery power for the unit. If the device connected to the ADI-1 XLR output has 25V-48V phantom power enabled, the ADI-1 can be used without draining the 9V battery. Disabling the ON/OFF button will save battery power when using phantom power. (1A) POWER ON INDICATOR This LED lights whenever the unit is on, either from external phantom power, or from internal battery power when the unit is switched ON. Contents Introduction ......................................................................................................................... 2 Controls and Connections .................................................................................................. 3 Operations .......................................................................................................................... 4 Connected to Instrument ............................................................................................. 5 Connected to Amplifier ................................................................................................ 5 Specifications ..................................................................................................................... 5 CAUTION: Always turn on the ADI-1 before turning up the volume on devices connected to the ADI-1 outputs to avoid damaging your equipment or speakers. (2) GROUND LIFT BUTTON When pressed, this disconnects the ground connection between the 1/4" input and XLR output to eliminate hum caused by ground loops. 2 ADI1manual 2 10/2/03, 9:53 AM 3 Operation (6) (7) Connected to Instrument The ADI-1 can be used to connect the unbalanced output of an instrument or line level device (eg. guitar, bass, synthesizer, effects module, another mixer) to the balanced input of a mixer or amplifier. Set the GUITAR/SPEAKER (3) switch to GUITAR for this application. If you desire to send the original unbalanced signal on to a mixer or amplifier, use the 1/4" UNBALANCED OUTPUT (5). The 1/4" OUTPUT (5) is paralleled with the input, therefore, when using the 1/4" OUTPUT (5), the input device and output device volume controls may need to be adjusted to acquire the desired level. Connected to Amplifier The ADI-1 can be used to connect an amplifier's speaker output, or a speaker's "daisy chain" output, to the balanced input of a mixer. Set the GUITAR/SPEAKER (3) switch to SPEAKER for this application. If your speaker has only one connector, the ADI-1 can be inserted between the amplifier and speaker using the 1/4" INPUT (4) and 1/4" OUTPUT (5) jacks. (3) SPEAKER/GUITAR SWITCH Switch enables a 35dB pad when set to SPEAKER, allowing the input to receive high level signals from speaker or amplifier outputs. (4) 1/4" INPUT Unbalanced 1/4" input jack for inputting a line level, instrument level, or speaker level signal. (5) 1/4" OUTPUT Unbalanced 1/4" output jack which is in parallel with the input jack. This allows the ADI-1 to be used as a Y-splitter by sending the input signal to another device via the 1/4" output as well as sending it from the balanced XLR output. (6) XLR OUTPUT Balanced XLR output jack [Pin 1 = Ground, Pin 2 = Hot(+), Pin 3 = Cold(-)] (7) BATTERY COMPARTMENT Remove screw and panel to install 9V battery. Specifications Frequency Response ............................................................................... 20-20 kHz, -3 dB Noise Level (22Hz-22kHz) ..................................................................................... -101dBu THD + N (10 Hz-22 kHz) ................................................................ 0.02% @ 1 VRMS, 1 kHz Input Impedance (Guitar) ................................................................................ > 1 M ohms Input Impedance (Speaker) ........................................................................... > 10 K ohms Output Impedance .................................................................................Approx. 500 ohms Max. Input Level 9V. Batt (1% THD) ..................................................................... +8.5dBu Max. Input Level 48V Phantom (1% THD) ........................................................ +11.5 dBu Inputs .................................................................................... Unbalanced 1/4" Phone Jack Outputs ................................ Balanced XLR Connector and Unbalanced 1/4" Phone Jack Power Requirement ...................................... 9 Volt Battery or Phantom Power 24-48 VDC Weight ......................................................................................................... 0.8 lbs. (.36 kg) Dimension ................................................................. 4.8" x 4.05" x 2" (124 x 103 x 51mm) 4 ADI1manual 3 10/2/03, 9:53 AM 5 ...