Rolls HR70 Manual

Rolls Modtager HR70

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Side 1/2

HR70

Digital FM Transmitter

Rolls Corporation

Salt Lake City, UT

2/20

www.rolls.com

Multi path reections

FM waves, like light waves, travel in a straight direction unless reected

o objects in their path. Because of this, two sets of waves reach your

antenna from the FM station; those that have traveled directly to the

antenna, and those that have been reected o buildings or mountains.

When the antenna receives both kinds of signals, the two interfere with

each other and result in distorted sound and poor separation. This phe-

nomenon is called "multi path reection". To reduce this problem, select

an antenna with good directivity and place it in the best location with

strong reception.

QUICK START OPERATION GUIDE

HR70

FM TRANSMITER

15 VDC

ANTENNA

FREQUENCY

DN UP

HR70

PWR

DUCK

MIC

LINE

RELEASE

TIME

MIC

AUX IN

LINE INOUTPUT

fast

slow

www.rolls.com

LEVEL

MUTE

CLIP

1 2

1 - TALK OVER OFF

2 - PHANTOM POWER

SENSITIVITY

LEVEL

103.5MHz

SPECIFICATIONS

Frequency Response: 20 Hz - 12.5 kHz

Input Impedance: 100KΩ Unbalanced, 600Ω Balanced

Indicators: Power LED and Clip LED

Input/Output jacks: XLR balanced INPUT

RCA unbalanced input and output

Power: Rolls PS27s

12 - 15 VDC 500mA

5 x 1.2 mm DC Jack - Center Negative

Antenna Jack: BNC connector

Antenna Impedance: 75Ω

Current: 150 mA

Tuning Range: 87.5 - 108 MHz

Dimensions: 6.75"w x 4.25"d x 1.6"h

Weight: 1.5 lbs

INTRODUCTION

Thank you for your purchase of the Rolls HR70 FM Digital Transmitter. This unit has been care-

fully designed and assembled to provide years of reliable FM transmission. Please read this

manual carefully as it contains important information regarding the proper setup and operation

of the HR70.

INSPECTION

Unpack and Inspect the package. Your HR70 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.

WARRANTY

For complete Warranty information and registration, please visit our web site; www.rolls.com.

Click on the REGISTER YOUR WARRANTY HERE line.

DESCRIPTION

FRONT PANEL

HR70

FM TRANSMITER

15 VDC

ANTENNA

FREQUENCY

DN UP

HR70

PWR

DUCK

MIC

LINE

RELEASE

TIME

MIC

AUX IN

LINE INOUTPUT

fast

slow

www.rolls.com

LEVEL

MUTE

CLIP

1 2

1 - TALK OVER OFF

2 - PHANTOM POWER

SENSITIVITY

LEVEL

103.5MHz

• DISPLAY: LCD display showing the active information relevant to the current operation of the

HR70.

• MIC/LINE: When pressed in, the gain of the XLR Mic In is reduced by 30 dB.

• CLIP: LED for indication of when the circuit is over driven/clipping.

• MUTE: When pressed unit will MUTE.

• LEVEL: Adjusts the level of output.

• FREQUENCY UP / DN: Selects the frequency that the HR70 is transmitting.

• RELEASE TIME: Adjusts the amount of time for the “ducked” signal to return to its normal level.

Counterclockwise; slow - Clockwise; fast.

• MIC LEVEL: Adjusts the amount of gain for the Mic In circuit.

• DUCK SENSITIVITY: The Threshold at which “ducking” begins. When the microphone level

reaches the threshold, the signal present at the Line In jacks is reduced until the announcement

is over, then the Line In signal returns to its previous level.

A NOTE ON THE HR70 THRESHOLD SETTING, WITH THE SENSITIVITY CONTROL FULLY CLOCKWISE: If a signal is

on the XLR input, the ducking will begin (the threshold is) at -30 dB when the Mic/Line switch is set to “Mic”,

and 0 dB when the switch is set to “Line”. If the control signal is on the RCA input, ducking begins at -30 dB.

DESCRIPTION CONTINUED

HR70 DISPLAY

-Channel Mhz - indicates Megahertz of FM transmission being sent

- Mute indicator

CONNECTION

- Connect the Rolls supplied adapter to the VDC power jack of the HR70, then to an AC outlet

with the proper voltage.

- Connect the HR70 Left and Right line input to a mixer, or other audio device.

WE RECOMMEND TURNING THE DUCK SENSITIVITY FULLY CLOCKWISE (ALL THE WAY

UP) TO START. THIS IS THE HIGHEST SENSITIVITY AND MOST DUCKING AVAILABLE ON

THE UNIT.

OPERATION

If you are using a condenser microphone, switch the Phantom Power on. Set the level of the music signal

(Line In) for a comfortable level. Speak into the microphone and adjust the Mic Level for a comfortable level,

then adjust the Sensitivity so that the music is muted when speaking with a normal voice. Set the Release

Time control for the amount of time you wish for the Aux In signal to return to normal.

REAR PANEL

• 15VDC: USE THE ROLLS SUPPLIED ADAPTER ONLY!!!

• Aux In: The Aux in is an input that will talk over the Line In (Main input)

• Line in: This is the main line level input to the HR70.

• Outputs: RCA stereo outputs.

• Mic: XLR microphone input.

• ANTENNA: Connects to the included FM transmitting antenna.

HR70

FM TRANSMITER

15 VDC

ANTENNA

FREQUENCY

DN UP

HR70

PWR

DUCK

MIC

LINE

RELEASE

TIME

MIC

AUX IN

LINE INOUTPUT

fast

slow

www.rolls.com

LEVEL

MUTE

CLIP

1 2

1 - TALK OVER OFF

2 - PHANTOM POWER

SENSITIVITY

LEVEL

103.5MHz

Produkt Specifikationer

Mærke:	Rolls
Kategori:	Modtager
Model:	HR70

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