Redback A 5110 DI Box Operating Instructions

REDBACK® Page 4 A 5110 DI Box OPERATING INSTRUCTIONS OVERVIEW Direct Injection (DI) boxes are used to convert high impedance unbalanced devices like guitar pick ups to a low level balanced output. This is done to allow signals to be fed over long distances without hum and noise pick up. This model can be powered from either an external 12V DC source, a 9V battery, or powered directly by the equipment it is connected to ie: Phantom powered. This DI box has inbuilt EQ or tone controls plus an overall level control. Two 6.35mm mono connectors are provided for the input and “loop out”, while a single 3 pin XLR is used for the output. An earth lift switch is provided to help eliminate earth loops. A test switch is provided to test battery or phantom power availability. A “loop in, loop out” power supply has been provided for powering other Redback Solutions products without the need for individual 12VDC supplies for each unit. SPECIFICATIONS Power: ..........................................................................9-28v DC. Power Source: ..................Internal 9v battery (not supplied) External 12v, or 24v, dc plugpack (not supplied) Operating current: ............................................................10ma Nominal Input Level:..................................-10dbm (245 mv) Input Impedance presented: ......................300k unbalanced Output Load required: ......................200~600 ohm balanced Frequency Response:..........................20 Hz to 20Khz (±1db) Gain:....................................................................................Unity Noise:..........................................................................> -60 dbm. *Specifications subject to change without notice Doc. BL1453 Doc. BL1453 FEATURES • 6.35mm mono in out loop • Treble, bass and mid volume • Balanced 3 pin XLR out • 12-24VDC or 9V battery operated • Slide switch to select 9V battery power • Switch for 9V battery or phantom power check • Ground isolation switch Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia. Phone: 1300 780 999 Fax: 1300 790 999 Internet: www.altronics.com.au

VCC VCC VCC C24 100n C23 100/25 R9 10 C15 10/35 LED3 R29 2k2 SW5 LED2 LED1 R16 3k3 R15 3k3 C13 10/35 C12 100/35 SW4 D4 5819 D3 5819 C11 100n C10 100n 1 2 3 U2 7812 R14 100k R13 100k D2 5819 B1 9v 1 2 2 2PIN C14 100 Q1 TIP31C R12 1k ZD2 15v R2 10k S2 S1 D1 5819 P2 P1 C2 10/BP RV1 1M/log C3 10pf C4 100n 2 3 1 U1A TL062 6 5 7 U1B TL062 R3 560 R4 4k7 R5 4k7 R6 560 R7 1k R8 1k 1 2 3 31 3PIN R10 470k R11 2k2 C5 10/BP C6 10/BP C7 100/25 C8 1n C9 .47 SW3 R17 18k R18 18k R19 12k R20 12k R21 10k R22 10k R23 1k RV2 100k/lin RV3 100k/lin RV4 100k/lin C16 10/bp C17 15n C18 2n7 C19 12n C20 1n5 C21 47p R24 27k R25 47k R26 47k 2 3 1 U3A TL072 6 5 7 U3B TL072 R27 470k R28 470k C22 22p + H 0630 DC. LOOPING DC. IN LOOP OUT SIGNAL IN (link) FRONT PANEL SWITCH 2 PIN DINKLE TO + H0660 Doc. BL1453 Doc. BL1453 REDBACK A 5110 D.I. Box On Power Level 6 8 2 0 10 4 6 8 2 0 10 4 6 8 2 0 10 4 6 8 2 0 10 4 Bass Mid Treble Phantom Power Battery Fig. 1: Front panel layout. 1 2 3 4 5 6 1 Phantom Power LED 2 Battery Check LED 3 Master Level Control 4 Bass Level Control 5 Mid Level Control 6 Treble Level Control 7 Power LED 8 Power Switch Legend 7 8 12-24 VDC Input 12-24 VDC Output - + - + 2 3 1 Output Lift Ground Loop Out Signal In Batt./ Phantom power Test Batt. On Off Made in Australia by Altronic Distributors Pty Ltd Fig. 2: Rear panel layout. 1 2 3 4 5 6 1 12-24VDC Input 2 12-24VDC Output 3 Ground Isolation Switch 4 XLR output 5 6.35mm Loop Out 6 6.35mm Signal In 7 Battery Selector Switch 8 Battery/Phantom Power Test Switch Legend 7 8