User manual ROLLS ADB3B

[. . . ] SPECIFICATONS Frequency Response: THD: Noise Floor: Connectors: Input Impedance: Output Impedance: Maximum Input Level: Maximum Gain: Size (WxHxD) Weight: Power: LIMITED WARRANTY -20 dB Gain: 20Hz - 40kHz, +/-1dB +20 dB Gain: 50Hz - 20kHz, +/-3dB . 03% (0dB in, -20dB Gain) 1% (-10dB in, +20dB Gain) >90dB (Gain switch in) Input: 1/4" unbal. 100K 600 +20dB (Gain switch out), -10dB (Gain switch in) +20dB 7. 6" x 1. 6" x 5. 4" (194mm x 40mm x 135mm) 2. 5lbs (1. 135kg) 12VAC 300ma (Adapter included in US models) ADB3b Stereo Tube Direct Box C H A This product is warranted to the original consumer purchaser to be free from defects in materials and workmanship under normal installation, use and service for a period of one (1) year from the date of purchase as shown on the purchaser's receipt. [. . . ] Some states do not allow the exclusion or limitation of special, incidental or consequential damages so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. INP UT GN DL IFT GN LIF D T N N E L O N E - 00 INP dB UT 0 PA D GA IN +2 0 -20 dB dB C H A AD B3 b GA IN +2 0 -20 dB dB N N E L T W O - 00 INP dB UT 0 PA D GN DL IFT GN LIF D T INP UT S D iter eo rec T u t B be ox P WR Salt Lake City, UT email: bellari@rolls. com web site: www. rolls. com 4/98 OWNERS MANUAL Congratulations and thank you for purchasing the ADB3b Stereo Tube Direct Box. The tube direct box is the DI of choice for hundreds of studios, engineers, producers, and artists the world over. The clear, warm quality of the tube maximizes the sound of musical instrument pickups and interfaces. The ADB3b is a two-channel active impedance matching device utilizing a 7025 vacuum tube. Unlike solid state active direct boxes, the ADB3b delivers a warm, slightly compressed signal due to the natural softening characteristics of tubes. Each channel features two 1/4" inputs, an XLR output, a Ground Lift switch, a 0 to infinity Pad control, and a +20/-20 dB input gain switch. Please take a moment and read this manual carefully. We sincerely hope this product provides you with years of reliable service. SAMPLE APPLICATIONS CHANNEL ONE GND LIFT +20 dB -20 dB CHANNEL TWO +20 dB -20 dB GND LIFT S ter eo T u b e D ir e c t B o x PWR INPUT 1 2 3 4 5 6 7 8 REWIND FAST FWD STOP PLAY RECORD EJECT INPUT GND LIFT - 0 dB 0 0 INPUT PAD ADB3b GAIN GAIN - 0 dB 0 0 INPUT PAD GND LIFT FRONT PANEL PWR LED: Indicates the ADB3b is on. NOTE: Channel One descriptions are identical to Channel Two. INPUT JACK: 1/4" unbalanced jack for instrument, line, or speaker level signals. GND LIFT SWITCH: Disconnects the ground from pin 1 of the output jack. PAD CONTROL: Adjusts the amount of input level from off to 0 dB. GAIN: When in, the gain of the tube circuit is -20 dB. [. . . ] Set the GAIN control for -20 dB and lower the PAD control for a proper level when using a speaker or hot line level signal. Set the GAIN control for +20 and adjust the PAD control to use the ADB3b as a preamp/DI. [. . . ]