Operation Manual © 2016 ZOOM CORPORATION Copying or reprinting this manual in part or in whole without permission is prohibited.
Contents Introduction Introduction…………………………………………… 2 Using Digital Audio Equipment…………………… 19 Safety and Usage Precautions…………………… 3 Connecting ZOOM H-Series Mic Capsules……… 22 Part Names…………………………………………… 4 Connecting with a Computer/iOS device………… 6 Using as a Standalone AD/DA Converter and Mic Preamp (Standalone Mode)………………………… 24 Recording……………………………………………… 11 Troubleshooting……………………………………… 25 Playback……………………………………………… 14 Specifications………………………………………… 26 Connecting MIDI Devices…………………………… 1
Safety Precautions In this operation manual, symbols are used to highlight warnings and cautions that you must read to prevent accidents. The meanings of these symbols are as follows. Something that could cause serious injury or Warning death Something that could cause injury or damage Caution to the equipment Other symbols used An action that is mandatory An action that is prohibited Warning Warning Alterations Do not open the case or modify the product.
Part Names Part Names Top MAIN OUT jacks LINE OUT 1 jacks INPUT 1 jack Hi-Z switch Level indicators LINE OUT 2 jacks PHANTOM switch PHONES jack GAIN knobs BALANCE knob INPUT 2 jack MAIN OUT knob PHONES knob DIRECT MONITOR knob MUTE switches Power indicator MIC IN connector XLR 2 3 TRS 1 TIP: HOT 1: GND 2: HOT 3: COLD RING: COLD SLEEVE: GND 4
Part Names (continued) Part Names Left side POWER switch OPERATION MODE switch S/PDIF IN SELECT switch SYNC indicator S/PDIF OUT jacks S/PDIF IN jacks Back MIDI OUT jack USB 2.
Connecting with a Computer/iOS device Installing the Driver Do not connect the until installation completes. Windows 1. Download the ZOOM U-44 Driver from http://www.zoom.co.jp/downloads/ to your computer. NOTE Installing the Driver • You can download the latest ZOOM U-44 driver from the above website. • Download the driver for the operating system that you are using. 2. Launch the installer and install the driver. Follow the instructions that appear on screen to install the ZOOM U-44 driver.
Using bus power Use a USB cable to connect the to the computer. 1. Open the battery cover on the 2. Install the batteries. 3. Replace the battery cover. bottom. NOTE • Use only alkaline alkaline batteries or rechargeable NiMH batteries. • The power indicator will blink when the battery charge becomes low. Turn the power off immediately and install new batteries.
Connecting with a Computer/iOS device Connecting with a Computer 1. Minimize the volume of any output devices that are currently connected to the . 2. Set 3. Use a USB cable to connect the to AUDIO INTERFACE. to the computer. Connecting with a Computer 4. Set to USB or BATTERY/DC IN to turn the power on. NOTE • If is set to AUDIO INTERFACE, the can only be used if it is connected to a computer. • When using batteries or an external power supply, set 5.
You can connect the to an iOS device when using either the optional AD-17 power adapter, an external DC power supply, or AA batteries. 1. Minimize the volume of any output devices that are currently connected to the . Set 3. Install batteries or connect an external power supply. (→ P. 7) 4. Connect the to AUDIO INTERFACE. to the iOS device using an Apple iPad Camera Connection Kit or Lightning to USB Camera Adapter. 5. Set to BATTERY/DC IN.
Connecting with a Computer/iOS device Turning the Power Off 1. Minimize the volume of any output devices that are currently connected to the . 2. Turn off amps, monitor speakers, and any other output equipment that is currently connected to the Turning the Power Off 3. Set . to OFF.
Connecting Instruments Guitar Bass guitar Keyboard (TRS cable) Using the Hi-Z Function • The Hi-Z function can only be used with INPUT 1. • When connecting a guitar or bass with passive pickups, use INPUT 1 on ( ). • When connecting a keyboard or other instrument, connect it to INPUT 1 and turn off ( ), or connect it to INPUT 2. 11 Connecting Instruments (mono instrument cable) and turn Recording Instruments can be connected to INPUTS 1 and 2 using TRS or mono instrument cables.
Connecting Mics Recording Mics can be connected to INPUTS 1/2 using XLR cables. Connecting Mics Dynamic mic (XLR cable) Condenser mic (XLR cable) Using Phantom Power • When using a condenser mic, turn on ( ). • When on, phantom power is supplied to both INPUTS 1 and 2.
Adjusting Input Gain Recording You can adjust the gain of each input. 1. Check the status of the input signal. Green light: Input signal is present. Red light: Input signal is clipping. Adjusting Input Gain 2. Adjust the input gain. Turn the . HINT • To avoid distorted recordings, adjust the input gain so the level indicator doesn't light up red.
Connecting Headphones and Speakers Playback Connect headphones to the PHONES jack, speakers to the MAIN OUT jacks, and adjust the volume levels accordingly. 1. Connect headphones or speakers. Connecting Headphones and Speakers Speakers Headphones 2. Adjust the headphones/speakers volume. Headphones volume: Turn Speakers volume: Turn . . NOTE • • • • • The LINE OUT 1 jacks deliver the same signal output as the MAIN OUT jacks. The LINE OUT 2 jacks deliver the same signal output as the PHONES jack.
Muting Outputs 1. Press Playback The outputs of channels A (MAIN OUT/LINE OUT 1) and B (PHONES/LINE OUT 2) can be muted/unmuted. for the channel you want to mute.
Using Direct Monitoring Playback Direct monitoring enables you to listen to input signals before they pass through the computer. This allows you to hear the sound coming into the without latency. 1. Turn to adjust the balance between the audio input and the computer playback signals.
Adjusting the Computer Playback Signal Balance Playback The balance between computer playback signals 1-2 and 3-4 can be adjusted for the LINE OUT 2 and PHONES outputs. For example, you can balance the PHONES output between click track and MAIN OUT signals during a live performance. Or you can balance between the cue and MAIN OUT signals during a DJ performance.
Connecting MIDI Devices Connecting MIDI Devices Use MIDI cables to connect MIDI devices to the MIDI IN and MIDI OUT jacks. MIDI OUT jack MIDI IN jack Sound module MIDI IN jack MIDI keyboard or MIDI controller MIDI OUT jack NOTE • When you connect the to a DAW using a MIDI port, follow the instructions below to ensure proper connectivity and functionality. Use ZOOM U-44 Driver. Do not use MIDI IN/OUT 2 (ZOOM U-44 Driver). Use ZOOM U-44 MIDI I/O Port.
About the Digital Audio Clock When the is connected to other digital audio equipment, the audio clock must be synchronized in order to accurately transfer audio data. If the devices are not synchronized, unwanted noise and other problems will occur. To synchronize the audio clock, one device must operate as the master—which sets the reference clock—and the other must operate as a slave.
Using Digital Audio Equipment Using Digital Audio Equipment (continued) Inputting an S/PDIF signal 1. Switch to OPTICAL or COAXIAL to select the input you want to use. 2. Connect the S/PDIF device to the S/PDIF IN jack set in step 1. (input) S/PDIF IN jack S/PDIF IN jack S/PDIF device (output) S/PDIF OUT jack NOTE • When a mic capsule is connected to the MIC IN connector, the S/PDIF inputs are disabled. • The S/PDIF inputs are assigned to INPUT 3/4. 3.
Outputting a S/PDIF signal 1. Connect the S/PDIF device to the S/PDIF OUT jack. (output) S/PDIF OUT jack S/PDIF OUT jack S/PDIF device (input) S/PDIF IN jack NOTE • S/PDIF outputs the same signals as the MAIN OUT and LINE OUT 1 jacks. HINT • The S/PDIF IN SELECT switch only affects S/PDIF input. S/PDIF output signals are always delivered from both the OPTICAL OUT and COAXIAL OUT jacks.
Connecting ZOOM H-Series Mic Capsules Connecting ZOOM H-Series Mic Capsules A ZOOM H-Series mic capsule can be connected to the MIC IN connector on the front of the . NOTE • The mic capsule input is assigned to INPUT 3/4. • When a mic capsule is connected, the S/PDIF IN (OPTICAL and COAXIAL) jacks cannot be used. 1. Turn the power OFF. NOTE • Always turn the power off before connecting a mic capsule. If you connect a mic capsule while the power is on, it will not be usable. 2.
3. Press the buttons on the sides of the mic capsule or extension cable, connect it to the 4. (continued) MIC IN connector, and insert it completely. To disconnect a mic capsule or extension cable, turn the off. Press the sides of the capsule or cable and pull it away. NOTE • Be careful not to use too much force when disconnecting. You could damage the mic capsule, extension cable, or main unit. • Attach the protective cap when a mic capsule or extension cable is not in use.
Using as a Standalone AD/DA Converter and Mic Preamp Using as a Standalone AD/DA Converter and Mic Preamp (Standalone Mode) 1. Minimize the volume of output devices connected to the 2. Supply power. (→ P. 7) 3. Use to set the sampling rate. INTERNAL: Function using 44.1 or 48 kHz sampling rate. (Master) S/PDIF: Use the sampling rate of the signal input through the OPTICAL IN or COAXIAL IN. (Slave) 4. 5. Turn the on using the power supplied in step 2. Confirm that the power indicator is lit.
Cannot select or use the • Confirm that the computer correctly. • Connect the directly to a USB port on the computer. Do not connect it to a USB hub. device is connected to the Cannot play or record , • Quit all the software that is using the and disconnect and reconnect the USB cable . connected to the • Confirm that the Sound setting of the computer that you are using is set to "ZOOM U-44". is set for input and output • Confirm that in the software you are using. • Reinstall the driver.
Specifications Specifications ANALOG IN ANALOG OUT INPUT 1/2 Connector TRS/XLR combo jacks (XLR: 2 hot, TRS: TIP hot) Input gain 0 – 43 dB Input impedance 2.6 kΩ (MIC IN) 1.1 MΩ (when Hi-Z ON) Maximum input level +2.7 dBu (MIC IN) /+20.
Signal Flow Diagrams Signal Flow Diagrams AUDIO INTERFACE mode signal flow diagram 48V DIRECT MONITOR LEVEL INDICATOR INPUT1 Hi-Z/ Lo-Z Gain INPUT 1 2 3 4 OUTPUT 1 2 3 4 OUTPUT 1 2 3 4 INPUT1 AD Gain INPUT2 INPUT2 INPUT1 -6dB COAXIAL IN OPTICAL IN -6dB OPTICAL OUT INPUT3 INPUT4 INPUT2 -6dB S/PDIF IN SELECT SWITCH COAXIAL OUT INPUT3 -6dB AD MAIN OUT VOLUME INPUT4 MIC IN -6dB A MAIN OUT L MAIN OUT R From Computer To Computer DA MUTE SWITCH A LINE OUT 1 L LINE OUT 1 R PHONES VO
ZOOM CORPORATION 4-4-3 Kandasurugadai, Chiyoda-ku, Tokyo 101-0062 Japan http://www.zoom.co.