USER’S GUIDE
Table of Contents:
Introduction ...................................2
Precautions ....................................2
Overview ........................................3
Getting Started ............................4
Setting the XU-1648 as
Your Computer’s Default
Sound Device ........................... 4-5
Monitoring with
Your Headphones........................5
Microphone Level
Adjustment ................................... 5
Troubleshooting .......................6-7
Specifications ...............................7
Warranty .........................................8
2
Thank you for choosing Senal.
The Senal XU-1648 XLR-to-USB Interface enables you to
plug your dynamic or condenser XLR microphone into
your computer’s USB port. The 16-bit/48-kHz sampling
rate delivers studio-quality sound, and the interface
provides switchable phantom power for condenser
microphones. The headphone output allows latency-
free monitoring, with a headphone level for volume
control and a monitor level to adjust the balance
between playback audio and the microphone.
Precautions
▪ Please read and follow these instructions
and keep this manual in a safe place.
▪ Exposure to high sound levels can cause
permanent hearing loss. Avoid listening at high
volumes for extended periods of time.
▪ Keep this product away from water and
all flammable gases or liquids.
▪ Do not attempt to disassemble or repair this product.
▪ Clean this product with only a soft, dry cloth.
▪ Make sure that this product is intact and
that there are no missing parts.
▪ All photos are for illustrative purposes only.
▪ Please read and follow these instructions
and keep this manual in a safe place.
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Introduction / Precautions
3
Overview
Overview
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Also Included:
USB cable
User’s Guide
+48V
Phantom
Mic Level
USB
Headphone
Monitor
XU-1648
Phantom power
indicator
Monitor level
Microphone level
Headphone
level
USB
power
indicator
Phantom power
button
Peak level
indicator
Signal: green
Peak: red
USB connector
Headphone output
XLR connector
4
Getting Started
1. Plug the XU-1648 into your computer via the included
USB cable. The USB power indicator will glow blue.
2. Plug your microphone into the XU-1648’s XLR
connector. If you are using a condenser microphone,
press the phantom power button to power your
microphone. The phantom power indicator will glow red.
Setting the XU-1648 as Your
Computer’s Default Sound Device
Your computer will automatically detect the XU-1648, but it
may not set it as the default sound device. If you are using a
Windows operating system, open up Sounds and Audio
Devices from the Control Panel. Select USB Audio CODEC
as the default device for sound playback and recording.
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Getting Started
5
Monitoring with Your Headphones / Microphone Level Adjustment
▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪
If you are using
Macintosh OS X,
open up System
Preferences and
select Sound.
Select USB Audio
CODEC as the
default device
on the Input and
Output tabs.
Monitoring with Your Headphones
You can plug your headphones directly into the
XU-1648 to monitor your recording without the latency
that often occurs when monitoring through a computer’s
headphone jack. To monitor through your XU-1648,
plug your headphones into the headphone output.
Use the headphone level to adjust the headphone volume.
Use the monitor level to adjust the balance between the
microphone and the playback audio.
Note: Turn off monitoring in the recording channel
of your audio software to prevent hearing both
the delayed and the latency-free audio.
Important! To avoid an accidental burst of high
volume, make sure to turn down the headphone
level before plugging in your headphones.
Microphone Level Adjustment
Use the microphone level to adjust your microphone’s
input gain. If the peak level indicator changes from
green to red, turn down the microphone level.
6
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Troubleshooting
Problem Solution
The XU-1648 will
not turn on.
Make sure the USB cable is
plugged into the XU-1648 and
the computer’s USB port.
Make sure the USB port is powered.
The microphone
will not record.
Make sure the microphone is
plugged into the XU-1648.
If you are using a condenser
microphone, press the
phantom power button.
Make sure you have selected the
XU-1648 as the default sound
recording/audio input device.
There is no sound
coming from the
headphones, or
the headphones
are too quiet.
Make sure the headphones are plugged
into the XU-1648’s headphone output.
Turn up headphone level on the
XU-1648.
Turn up the volume on your computer.
If your headphones have their own
built-in volume control, turn it up.
Make sure you have selected the
XU-1648 as the default sound
playback/audio output device.
The sound is
distorted.
Turn down the XU-1648’s
microphone level.
If your microphone has a built-
in gain control, turn it down.
Troubleshooting
7
Troubleshooting / Specifications
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Input:
XLR
Input impedance:
1,200 Ω
Input gain range:
35 dB
Headphone output:
3.5 mm stereo
Headphone output:
50 mW (16 Ω)
USB connector:
Standard-B, digital audio interface
Sampling rate - DAC:
32, 44.1, 48 kHz
Sampling rate - ADC:
8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
Bit depth:
16 bit
USB version:
1.1, 2.0
Phantom power:
48 V ±2 V, 15 mA
Frequency response:
25 Hz to 20 kHz
Power consumption:
2.2 W
Dimensions:
5.1 × 1.2 × 1.1˝
(13 × 3.1 × 2.8 cm)
Weight:
3.3 oz. (94 g)
Specifications
Problem Solution
The playback
audio is not
audible.
Turn up the monitor level.
The playback
audio is delayed.
Turn off monitoring in the recording
channel of your audio software.
One-Year Limited Warranty
This Senal product is warranted to the original purchaser to be
free from defects in materials and workmanship under normal
consumer use for a period of one (1) year from the original
purchase date or thirty (30) days after replacement, whichever
occurs later. The warranty provider’s responsibility with respect
to this limited warranty shall be limited solely to repair or
replacement, at the provider’s discretion, of any product that
fails during normal use of this product in its intended manner
and in its intended environment. Inoperability of the product
or part(s) shall be determined by the warranty provider. If the
product has been discontinued, the warranty provider reserves
the right to replace it with a model of equivalent quality and
function.
This warranty does not cover damage or defect caused by misuse,
neglect, accident, alteration, abuse, improper installation or
maintenance. EXCEPT AS PROVIDED HEREIN, THE WARRANTY
PROVIDER MAKES NEITHER ANY EXPRESS WARRANTIES NOR
ANY IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO
ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. This warranty provides you with
specific legal rights, and you may also have additional rights that
vary from state to state.
To obtain warranty coverage, contact the Senal Customer Service
Department to obtain a return merchandise authorization
(“RMA”) number, and return the defective product to Senal
along with the RMA number and proof of purchase. Shipment of
the defective product is at the purchaser’s own risk and expense.
For more information or to arrange service, visit www.senalsound.com
or call Customer Service at 212-594-2353.
Product warranty provided by the Gradus Group.
www.gradusgroup.com
Senal is a registered trademark of the Gradus Group.
© 2014 Gradus Group LLC. All Rights Reserved.
All other trademarks are the property of their respective owners.
All photos are for illustrative purposes only.
GG3
