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Rear Panel

Ground Lift Switch

Cord Hook

Phase Switch

OUTPUT LEVEL 

Switch

INPUT LEVEL 

Switch

INPUT Jack

OUTPUT Jacks

PHANTOM Power Switch

AC Adaptor Jack

OUTPUT LEVEL Switch

Use this switch to select the output appropriate for the
input level of the equipment being connected. For
output to a device expecting microphone-level input,
switch to “Mic -40 dBm.”

Phase Switch

Ordinarily, this should be set to “NOR” (normal). Set
it to “INV” when you need output that has the phase
(polarity) inverted.

Ground Lift Switch

Should ordinarily be set to “NOR” (normal). If noise
arising from a ground loop should occur (while using
balanced connections), switch it to “LIFT.”

INPUT Jack

Accepts connection of microphones, or the output
from external equipment. Features jack for both XLR-
3-31 connectors as well as standard TRS phone plugs.

Cord Hook

To prevent the inadvertent disruption of power to
your unit (should the plug be pulled out accidentally),
and to avoid applying undue stress to the AC adaptor
jack, anchor the power cord using the cord hook, as
shown in the illustration.

AC Adaptor Jack

Use the AC adaptor (BRC-Series) included with this
unit.

OUTPUT Jacks

Connect cables from here to the input jacks on your
other equipment.

Summary of Contents for AF-70

Page 1: ...hnical Light Sound Center Khaled Ibn Al Walid St P O Box 13520 Damascus SYRIA TEL 011 2235 384 TURKEY Barkat Muzik aletleri ithalat ve ihracat limited ireketi Siraselviler Cad Billurcu Sok Mucadelle C...

Page 2: ...sonnel Never use or store the unit in places that are Subject to temperature extremes e g direct sunlight in an enclosed vehicle near a heat ing duct on top of heat generating equip ment or are Damp e...

Page 3: ...ion cord Excessive loads can cause the insulation on the cord to heat up and eventually melt through Before using the unit in a foreign country con sult with your dealer or qualified Roland ser vice p...

Page 4: ...y Dynamic Adjust Instantly cuts sudden unexpected feedback Diffuse Function Suppresses the ringing and coloration that occur just before the onset of feedback Built In Functions Effective for Use with...

Page 5: ...h impregnated with a mild non abrasive detergent Afterwards be sure to wipe the unit thoroughly with a soft dry cloth Never use benzene thinners alcohol or solvents of any kind to avoid the possibilit...

Page 6: ...cillatingwhine Turning up the microphone volume pointing the microphone at the speaker bringing the microphone too close to the speaker or raising speaker output levels so that the sound enters the mi...

Page 7: ...Wide Dynamic Diffuse Limiter Enhancer Low Cut Filter and Hi Cut Filter For more information about each of these functions please refer to About the Function Setting Switches on page 13 When altering...

Page 8: ...tch Should ordinarily be set to NOR normal If noise arising from a ground loop should occur while using balanced connections switch it to LIFT INPUT Jack Accepts connection of microphones or the outpu...

Page 9: ...ne plug and is used for balanced input output Unbalanced input output is also supported 2 1 3 1 1 GND 2 HOT 3 COLD 2 3 HOT COLD GND MakingtheConnections As shown in the diagram connect any peripheral...

Page 10: ...ck may occur momentarily during Auto Adjust this is due to the feedback detection operation and settings being made for the safety margin there is nothing abnormal about this Feedback ceases after a b...

Page 11: ...operation Flashing 3 Auto Adjust ends automatically after securing a safety margin of approximately 12 dB The Auto indicator stops flashing and instead will light steadily Theanti feedbackfiltersetti...

Page 12: ...dwidth is automatically slightly broadened and feedback from multiple frequencies is removed with one filter A bandwidth of 1 20 of an octave corresponds to the definition achieved with a 200 band gra...

Page 13: ...hone you can cause the frequency at which feedback is occurring to shift and suppress the growth of feedback The Diffuse function creates such changes in a virtual manner It is also effective in reduc...

Page 14: ...ancer Function Low Cut Filter High Cut Filter Phantom Power 48 V Output Phase Function Output Ground Lift Function Connectors INPUT XLR 3 31 Type 1 4 inch TRS Phone Type for common use OUTPUT XLR 3 32...

Page 15: ...n outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Unauthorized changes or modification to this system can v...

Page 16: ...hnical Light Sound Center Khaled Ibn Al Walid St P O Box 13520 Damascus SYRIA TEL 011 2235 384 TURKEY Barkat Muzik aletleri ithalat ve ihracat limited ireketi Siraselviler Cad Billurcu Sok Mucadelle C...

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