Rotel RA-1070 Owner's Manual download pdf (Page 8)

Preamp Outputs

The RA-1070 has two sets of preamp outputs.

The signal from the source selected with the

Listening Selector buttons is always available

from these outputs. Typically these outputs are

used to provide a signal to another integrated

amplifier or power amplifier, which is used

to drive remote speakers. Or they may be used

to provide signals to a surround sound pro-

cessor or other signal processing component.

Speaker Outputs and

Speaker Selector Switch

[See Figure 4 for speaker connec-

tion illustration.]

The RA-1070 has two sets of speaker outputs,

labeled “A”

and “B” . The speaker out-

puts are controlled by the Speaker Selector

switch

on the front panel.

Speaker Selection

If only one set of speakers will be used at any

given time, the speakers may have an imped-

ance as low as 4 ohms. If there are times when

both the A and B speakers will be used, all

the speakers should have an impedance of

8 ohms or more. Speaker impedance ratings

are less than precise. In practice, very few loud-

speakers will present any problems for the

RA-1070. See your authorized Rotel dealer

if you have any questions.

Speaker Wire Selection

Use insulated two-conductor stranded wire to

connect the RA-1070 to the speakers. The size

and quality of the wire can have an audible

effect on the performance of the system. Stan-

dard speaker wire will work, but can result

in lower output or diminished bass response,

particularly over longer distances. In general,

heavier wire will improve the sound. For best

performance, you may want to consider spe-

cial high-quality speaker cables. Your autho-

rized Rotel dealer can help in the selection

of cables for your system.

Polarity and Phasing

The polarity – the positive/negative orienta-

tion of the connections – for every speaker

and amplifier connection must be consistent

so all the speakers will be in phase. If the po-

larity of one connection is reversed, bass output

will be very weak and stereo imaging de-

graded. All wire is marked so you can iden-

tify the two conductors. There may be ribs or

a stripe on the insulation of one conductor.

The wire may have clear insulation with dif-

ferent color conductors (copper and silver).

There may be polarity indications printed on

the insulation. Identify the positive and negative

conductors and be consistent with every

speaker and amplifier connection.

Speaker Connection

Turn off all the components in the system be-

fore connecting the speakers. The RA-1070 has

color-coded binding post type speaker connec-

tors on the back panel (except in European Com-

munity countries where their use is not permit-

ted). These connectors accept bare wire, con-

nector lugs, or dual banana type connectors.

Route the wire from the RA-1070 to the speak-

ers. Give yourself enough slack so you can

move the components to allow access to the

speaker connectors. If you are using dual

banana plugs, connect them to the wires and

then plug into the backs of the binding posts.

The thumbscrews of the binding posts should

be screwed in all the way (clockwise).

If you are using terminal lugs, connect them

to the wires. If you are attaching bare wires

directly to the binding posts, separate the wire

conductors and strip the insulation from the

end of each conductor. Be careful not to cut

into the wire strands. Unscrew (turn counter-

clockwise) the binding post thumbscrews. Place

the connector lug or wire around the bind-

ing post shaft. Turn the thumbscrews clock-

wise to clamp the connector lug or wire firmly

in place.

NOTE: Be sure there are no loose wire

strands that could touch adjacent wires or

connectors.

IR Inputs and Outputs

External Remote Input

This 3.5 mm mini-jack (labeled EXT REM IN)

receives command codes from an industry-

standard infrared receivers (Xantech, etc.)

located in the main listening room. This fea-

ture is useful when the unit is installed in a

cabinet and the front-panel sensor is blocked.

Consult your authorized Rotel dealer for in-

formation on external receivers and the proper

wiring of a jack to fit the mini-jack receptacle.

NOTE: The IR signals from the EXTERNAL

REMOTE IN jack can be relayed to source

components using external IR emitters or

hardwired connections from the IR OUT

jacks.

IR Output

The IR OUT 1 and 2 jacks send IR signals re-

ceived at the EXTERNAL REM IN jack to an

infrared emitter placed in front of a source

component or to Rotel CD players, cassette

decks, or tuners with a compatible rear panel

IR connector.

This output is used to allow IR signals to pass

along IR signals from a remote control when

the sensors on the source components are

blocked by installation in a cabinet.

See your authorized Rotel dealer for informa-

tion on IR repeater systems.

NOTE: The EXT REM IN jack located next

to the these jacks is for use with an external

IR sensor duplicating the front panel IR sen-

sor and located in the primary zone.

12 Volt Trigger Outlet

Some audio components can be turned on

automatically when they receive a 12V turn

on “signal”. The 12V Trigger Outputs of the

RA-1070 provide the required signal. Con-

nect compatible components to the RA-1070

with a conventional 1/8” miniplug cable.

When the RA-1070 is in Standby mode, the

trigger signal is interupted, so the components

controlled by it are turned off.

RA-1070 Stereo Integrated Amplifier

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Rotel RA-1070 Owner's Manual Page 8

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