Rolls DB228 User manual

DB228
Rolls
Brand
Rolls
Model
DB228
Category
Wall & ceiling mounts accessories
Type
User manual

Rolls DB228 is a versatile audio interface designed to seamlessly integrate consumer audio devices with professional balanced audio systems. It features a stereo 1/8" (3.5mm) input for connecting devices like CD/DVD players, MP3 players, or phones, and a balanced XLR input for microphones. The device's level control allows for precise adjustment of both inputs, ensuring optimal audio levels. The transformer-isolated outputs are available via a pluggable barrier strip connector, providing a balanced signal for professional audio equipment.

Rolls DB228 is a versatile audio interface designed to seamlessly integrate consumer audio devices with professional balanced audio systems. It features a stereo 1/8" (3.5mm) input for connecting devices like CD/DVD players, MP3 players, or phones, and a balanced XLR input for microphones. The device's level control allows for precise adjustment of both inputs, ensuring optimal audio levels. The transformer-isolated outputs are available via a pluggable barrier strip connector, providing a balanced signal for professional audio equipment.

Quick Start Guide
Rolls Corporation
Salt Lake City, UT
09/17
DB228 Wall Direct Interface
- Transformer isolation device
- Passive - no power required
- Stereo 1/8" (3.5mm) Input
- Balanced plugable barrier strip Output Connector
- The DB228 is an ideal impedance matching device for connecting any
unbalanced stereo signal to a balanced system. Consumer audio equipment
such as CD players, DVD players, MP3 players, phone, etc., may be easily con-
nected to a professional audio system. In addition it will mix a microphone
with a line level signal and send it out via a plugable barrier strip connector.
DB228
Wall Direct Interface
7588 9 00228
6 7
SPECIFICATIONS
XLR Input Impedance : 600 Ohms
3.5mm Input Impedance : 20K Ohms
Frequency Response: 50 - 20K Hz +/- 3 dB
Weight: .25 lbs.
Dimensions: 1.5" w x 4.125" h x 1.5" d
- Level Control adjusts both inputs
- 3.5mm R and L mix to Mono
- Output is a screw terminal plugable strip
- Mounting for standard electrical wall box (not included)
- Trim is for standard Decor'a wall plate (not included)
www.rolls.com
INTRODUCTION
Thank you for purchasing the DB228 Wall mount Direct Interface. This sturdy device is
designed and manufactured to the most demanding specications in order to provide
years of faithful service. The DB228 converts high impedance audio signals (1/8" stereo
input), or XLR microphone input to a low impedance output via Rolls proprietary audio
transformer.
DESCRIPTION
FRONT PANEL
- INPUT: XLR balanced input jack for connection to a microphone.
- INPUT: 1/8" (3.5mm) Tip-Ring-Sleeve jack for connection to an unbalanced Stereo signal.
- Level: Adjusts the input level of both the Stereo 1/8" input and the XLR input.
REAR PANEL
-
- Plugable barrier strip connector on the back of the DB228. This is a balanced output.
Pin 2 is hot or +, pin 3 is the out of phase signal or -, and pin 1 is ground.
CONNECTION / OPERATION
Plug a microphone into the XLR input on the front of the unit. The Level will control the
volume of the XLR input.
1/8" (3.5mm) Jack: Connect a Tip-Ring-Sleeve stereo plug into this jack. NOTE: Connect-
ing a Tip-Sleeve MONO plug into this jack might lead to low volume being sent out as
the right side will be shorted to ground if a mono plug is used.
Connect the plugable barrier strip connector to the microphone input wires.
The DB228 will passively send signals plugged into the front panel of the DB228 to the
rear plugable barrier strip connector. The Level knob will adjust the volume of both the
1/8" and XLR input. You can use both the XLR and 1/8" inputs at the same time. Both
signals will be sent to the barrier strip output of the DB228. When using both inputs at
the same time you might have a dierence in level between the 1/8" input and the XLR
input. This is normal operation for the DB228.
1
Rolls Corporation
5968 So 350 West
Murray Utah 84107
1
DB228.SCH A
5 September 2017
Document Number:
Date:
Rev:
Sheet of
DB228 WALL PLATE DIRECT INTERFACE
Ba
INPUT
OUTPUT
R4
470
R1 1K
12
3
J2
XLR JACK F
TR1
PN829
P1
2.5K
R2 1K
R3
1K
N/C
N/T
PHAN OK
MIC INPUT
PLUG BARRIER
J1
JK3.5ST
2
H1B
HD3
1
H1A
HD3
3
H1C
HD3
Fair is where you get cotton candy
  • Page 1 1
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Rolls DB228 User manual

DB228
Rolls
Brand
Rolls
Model
DB228
Category
Wall & ceiling mounts accessories
Type
User manual

Rolls DB228 is a versatile audio interface designed to seamlessly integrate consumer audio devices with professional balanced audio systems. It features a stereo 1/8" (3.5mm) input for connecting devices like CD/DVD players, MP3 players, or phones, and a balanced XLR input for microphones. The device's level control allows for precise adjustment of both inputs, ensuring optimal audio levels. The transformer-isolated outputs are available via a pluggable barrier strip connector, providing a balanced signal for professional audio equipment.

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