Rolls HE18 Buzz Off User manual

HE18
Buzz Off
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 purchaserís 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, TRANSPOR- TATION 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. ANYIMPLIED WARRANTIES, OBLIGATIONS, OR LIABILITIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITYAND FITNESS FORAPARTICULAR PURPOSE, SHALL BE LIMITED IN DURATION TOTHE 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.
IN NO EVENT SHALL WE BE LIABLE FOR ANY SPECIAL,
INCIDENTAL OR CONSEQUENTIALDAMAGES 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 consequen- tial 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.
Rolls Corporation
Salt Lake City, UT
10/04
HE18 Buzz Off
The HE18 helps remove hum and buzz from a balanced or unbalanced line. Perfect for musicians or audio profession- als, the unit is safe and convenient to operate. Simply connect the offending line into the input, and connect the output to your next device. ï Helps eliminate ground hum and buzz ï Dual channel ï No power required - completely passive ï Converts balanced to unbalanced lines and vice versa
R
R
L
L
INPUT
OUTPUT
RIGHT
INPUT
LEFT
INPUT
RIGHT
OUTPUT
LEFT
OUTPUT
BUZZ
OFF
MADE IN THE USA
Removes buzz or hum
caused by ground loops
Requires no power
Converts unbalanced
signals to balanced
HE18

INTRODUCTION
Thank you for your purchase of the HE18 Buzz Off. If you've got hum or
buzz in your audio signal, the HE18 is the solution you need.
Almost allAC hum is caused by ground loops. These ground loops act
like radio antennae, picking up hum and noise. The HE18 removes many
causes of noise by eliminating the ground potential.
INSPECTION
1. Unpack and Inspect the HE18 package
Your HE18 was carefully packed at the factory in a protective carton.
Nonetheless, be sure to examine the unit and the carton for any signs of
damage that may have occurred during shipping. If obvious physical
damage is noticed, contact the carrier immediately to make a damage
claim. We suggest saving the shipping carton and packing materials for
safely transporting the unit in the future.
2. Please visit our website at www.rolls.com, click on the Register Your
Warranty Here text and follow the instructions to register your HE18. Or
complete the Warranty Registration Card and return it to the factory.
DESCRIPTION
INPUT(S): 2 ea; 1/4" Tip-Ring-Sleeve jacks
2 ea; RCAjacks
OUTPUT(S): 2 ea; 1/4" Tip-Ring-Sleeve jacks
2 ea; RCAjacks
OPERATION
To insert the HE18 in a system with a buzz or hum, disconnect the device
you suspect is causing the noise. Connect that device's Output to either
of the Inputs (1/4" or RCA), and connect the HE18 Output(s) to the next
device in the signal chain.
For example; if you've got a buzz in your video system, connect the HE18
between the video unit and amplifier to isolate the signals.
PLEASE NOTE: THE HE18 IS INTENDED TO RECEIVE LINE LEVEL
(0db to +4 dB) SIGNALS. DO NOT CONNECTAMICROPHONE LEVEL
SIGNAL ORASPEAKER (POWERED) LEVEL SIGNALTO THIS UNIT.
CONNECTING A SPEAKER LEVEL SIGNAL (ie. THE OUTPUT OF A
POWER AMPLIFIER) WILL CAUSE PERMANENT DAMAGE TO THE
HE18.
SPECIFICATIONS
Max Out: Bal: +18 dB
Unbal: +12 dB
Max In: Bal: +22 dB
Unbal: +22 dB
InputImpedance: RCA: 10 k Ohm
1/4": 10 k Ohm balanced
OutputImpedance: RCA: 10 k Ohm
1/4": 10 k Ohm balanced
THD: .05% @ 1 kHz
Weight: 1 lbs. (.45 Kg)
Size: 4.15" x 2.46" x 1.55"
SCHEMATIC
R
R
L
L
INPUT
OUTPUT
RIGHT
INPUT
LEFT
INPUT
RIGHT
OUTPUT
LEFT
OUTPUT
BUZZ
OFF
MADE IN THE USA
Removes buzz or hum
caused by ground loops
Requires no power
Converts unbalanced
signals to balanced
HE18
INPUT OUTPUT
INPUT OUTPUT
RIGHT
LEFT
INPUTS
OUTPUTS