INTRODUCTION

Thank you for purchasing the DB24 Stereo Direct Interface. This sturdy device is designed and manufactured to the most demanding specifications in order to provide years of faithful survice. The DB24 converts high impedance audio signals to low impedance via Rolls proprietary audio transformers, and a variety of inputs.

DESCRIPTION

FRONT PANEL

 

 

 

 

 

 

-35

 

 

 

 

 

DB24

 

 

 

 

 

 

 

 

 

 

 

-35

 

 

 

 

 

 

 

 

 

 

-50

-25

 

 

 

 

-50

-25

 

 

 

 

 

 

 

 

 

 

-60

-20

 

 

 

St.

-60

-20

 

 

 

 

 

L. Ster

Left

 

 

Right

R. Mon

Level

 

 

IN

Level

-L.Ster: 1/4" Tip-Ring-Sleeve jack for connection to a "Left" portion of a signal, or a Tip-Ring-Sleeve "Stereo" signal.

-Left Level: Adjusts the input level to the Left channel.

-L & R: Stereo RCA jacks, for connection to an unbalanced stereo signal. Note: The Right and Left jacks may be used individually as well.

NOTE: The Red RCA jack connects to the Right Out, and the White RCA jack connects to the Left Out.

-St. IN: 1/8" (3.5mm) Tip-Ring-Sleeve jack for connection to an unbalanced Stereo signal only.

-Right Level: Adjusts the input level to the Right channel.

-R. Mon: 1/4" Tip Sleeve jack for connection to the "Right" portion of a stereo signal, or to a "Mono" signal.

CONNECTION / OPERATION

1/4" Jacks: Stereo Operation:

A. Individual Right and Left connections - Connect Tip-Sleeve 1/4" plugs to the Right and Left Input jacks.

B. Stereo Tip-Ring-Sleeve connection - Connect a Tip-Ring-Sleeve 1/4" plug to the Left/Stereo Input jack. IMPORTANT NOTE: Connecting a Tip-Sleeve MONO plug into this jack, with nothing connected to the Right/Mono Input will result in the Right/Mono Input being shorted to ground.

1/4" Jack: Mono Operation: Connect a Tip-Sleeve Mono plug to the Right/Mono Input.

1/8" (3.5mm) Jack: Connect a Tip-Ring-Sleeve stereo plug into this jack for stereo

operation only. NOTE: Connecting a Tip-Sleeve MONO plug into this jack, with nothing connected to the Right/Mono 1/4" Input will result in the Right/Mono Input being shorted to ground.

RCA Jacks: Connect Stereo RCA plugs into these jacks for stereo or dual-mono operation.

Connect XLR outputs to the next device in your signal chain.

Adjust the Right and Left Level controls for an appropriate input level. For ex- ample, for maximum amount of attenuation (least amount of signal), turn the Level control to -60. For minimum attenuation (maximum signal), turn the Level control up to -20.

SCHEMATIC

REAR PANEL

mono stereo

OUT

OUT

gnd lift

 

LEFT

RIGHT

 

-

- Stereo/Mono When in stereo the units left and right are separet. When in Mono

The left and right inputs are combined together. In mono mode you can plug a single

left or right input into the DB24 and you will get output from both left and right.

 

J3

 

 

 

 

 

PHONE 1/4

P1

 

 

LEFT/STEREO

 

R5

470

 

P100K

 

 

 

 

 

 

R1

 

 

 

 

 

10K

 

 

 

2

R2

 

 

J4A

 

1K

 

 

 

 

2

3

 

1

 

RCAX2 PC

 

 

 

 

 

 

 

INPUTS

3

 

 

 

 

J5

 

 

P2

 

1

 

 

JK3.5ST

R6 470

 

 

 

 

 

 

 

 

P100K

R4

 

 

 

 

10K

 

J6

PHONE 1/4

RIGHT/MONO

R3

 

1K

TR1

 

 

 

 

 

2

 

 

3

 

 

PN829

J1

 

 

 

 

 

XLR JACK M

1

OUTPUT

SPST

 

 

 

 

 

SW1

 

 

 

MONO/STEREO

 

 

TR2

 

 

 

20K X 600 ohm

 

 

 

 

2

 

 

3

 

 

PN829

J2

 

 

 

1

 

XLR JACK M

 

1

 

 

 

SW2

 

 

 

GROUND/LIFT

SPST

 

3

 

2

- Ground Lift (Labeled "gnd/lift"): When positioned to the side of the switch labeled

"lift", the shield of the XLR plug is separated from the ground pin (pin 1).

- Left/Right OUT: Balanced XLR jacks - for connection to mixer inputs, amplifiers,

etc. This will effect both left and right channels.

Rolls Corporation

 

5968 So 350 West

 

 

Murray

Utah 84107

 

 

 

 

DB24 STEREO DIRECT INTERFACE

 

 

 

 

 

 

Document Number:

 

Rev:

Ba

 

DB24.SCH

A

Date: 25 JUNE 2010

Sheet 1

of 1

Page 2
Image 2
Rolls DB24 quick start Introduction, Description, Schematic

DB24 specifications

The Rolls DB24, a sophisticated luxury vehicle, represents the pinnacle of engineering and design from the renowned British automaker, Rolls-Royce. Designed for the discerning client who seeks elegance intertwined with cutting-edge technology, the DB24 is a masterclass in automotive excellence.

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With the Rolls DB24, luxury meets innovation, offering a spectacular driving experience wrapped in elegance. Its blend of performance, comfort, and bespoke features solidifies its status as a benchmark in the luxury automotive industry. The DB24 is not just a car; it is a statement of sophistication for those who demand nothing but the best.