Rolls Matchbox DB25 Manual

Rolls Ikke kategoriseret Matchbox DB25

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Side 1/2

DB25

MATCHBOX

Direct Box

Owners Manual

LIMITED WARRANTY

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.

The obligation of Rolls Corporation under this warranty shall be limited

to repair or replacement (at our option), during the warranty period of any part

which proves defective in material or workmanship under normal installation,

use and service, provided the product is returned to Rolls Corporation, TRANS-

PORTATION CHARGES PREPAID. Products returned to us or to an authorized

Service Center must be accompanied by a copy of the purchase receipt. In the

absence of such purchase receipt, the warranty period shall be one (1) year from

the date of manufacture.

This warranty shall be invalid if the product is damaged as a result of

defacement, misuse, abuse, neglect, accident, destruction or alteration of the

serial number, improper electrical voltages or currents, repair, alteration or

maintenance by any person or party other than our own service facility or an

authorized Service Center, or any use violative of instructions furnished by us.

This one-year warranty is in lieu of all expressed warranties, obligations

or liabilities. ANY IMPLIED WARRANTIES, OBLIGATIONS, OR LIABILI-

TIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES

OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE,

SHALL BE LIMITED IN DURATION TO THE ONE YEAR DURATION OF

THIS WRITTEN LIMITED WARRANTY. Some states do not allow limitations

on how long an implied warranty lasts, so the above limitation may not apply to

you.

Salt Lake City,

Utah 8/99

IN NO EVENT SHALL

WE BE LIABLE FOR ANY

SPECIAL, INCIDENTAL OR

CONSEQUENTIAL DAMAGES

FOR BREACH OF THIS OR

ANY OTHER WARRANTY,

EXPRESSED OR IMPLIED,

WHATSOEVER. 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.

DB25 Matchbox

• Converts high-impedance to low-

impedance & vice-versa

• Ground Lift for "hum" reduction

• Attenuator switch for connection

to line level or speaker level

signals

The DB25 is a passive direct box

for converting a high impedance

signal such as a direct out from a

bass amplifier, to a low impedance

signal such as a snake input and a

mixer's microphone input. The

Ground Lift is provided to reduce

possible ground hum or buzz.

0 dB

-20 dB

-40 dB

ATTENUATOR

MATCHBOX

DB25

GROUND LIFT

GND

LIFT

OUT

INTRODUCTION

Thank you for your purchase of the DB 25 MATCHBOX, a

passive direct box designed to take high impedance signals

and convert them to low impedance. The unit features an

Attenuator switch for padding the input signal by either 20 or

40 dB, and a Ground Lift switch which may reduce unwanted

hum caused by "ground loops".

DESCRIPTION

Input Jacks: 1/4" unbalanced jacks for receiving line or in-

strument level signals.

Attenuator switch: Reduces the input signal by the amount

indicated.

Ground Lift Switch: In the "Lift" position, the ground connec-

tion of the XLR jack is disconnected from the chassis.

Output Jack: XLR balanced jack for connection to a mixing

board or other balanced input device.

SPECIFICATIONS

Frequency Response: 50 - 15kHz +/- 3 dB

Output Impedance: 600 Ω

Input Impedance: 50K Ω

Max Output Level: +4 dBm

EXAMPLE APPLICATIONS

PHONE 1/4

XLR M PC

50K - 600 CT

SW1B

ALPHASW

-20

R1 10K

SW1A

ALPHASW

0 Db

PHONE 1/4

-40

100K

SW2A

DPDT

LIFT

Date: December 22, 1992 Sheet of

Size Document Number REV

A DB25.SCH

Title

DB25 MATCHBOX

ROLLS CORPORATION

0 dB

-20 dB

-40 dB

ATTENUATOR

MATCHBOX

DB25

GROUND LIFT

GND

LIFT

OUT

AMPLIFIER

MIXING BOARD

0 dB Setting

BASS GUITAR

0 dB

-20 dB

-40 dB

ATTENUATOR

MATCHBOX

DB25

GROUND LIFT

GND

LIFT

OUT

-40 dB Setting

SPEAKER OUTPUT

0 dB

-20 dB

-40 dB

ATTENUATOR

MATCHBOX

DB25

GROUND LIFT

GND

LIFT

OUT

Produkt Specifikationer

Mærke:	Rolls
Kategori:	Ikke kategoriseret
Model:	Matchbox DB25

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