External Ampliﬁer Connections - Adcom GFR-700 User Manual

Adcom user's manual a/v receiver gfr-700

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External Ampliﬁer Connections

The GFR-700's built-in 5 x 125 watts per channel am-

pliﬁer has more than enough power for most home

applications. Nevertheless, 7.1 preamp outputs are

provided so you can hook the GFR-700 up to an even

bigger rig (the GFA-7707 comes to mind), if desired.

More importantly, these preamp outputs can also be

used in tandem with the GFR-700's built-in ampliﬁer

to connect a subwoofer (S) and surround back (RB/

LB) speakers.

Connecting an Ampliﬁer

Using eight RCA cables, connect the 7.1 channel

preamp outputs from the GFR-700 to the corre-

sponding RCA inputs on your external ampliﬁer.

•

Connect the RF, LF, RS, LS, RB, LB, and C

outputs to the ampliﬁer and the S output to

a powered subwoofer.

If you have a 5.1-channel ampliﬁer, use ﬁve RCA

cables and omit the RB and LB connections. Con-

nect the S output to a powered subwoofer.

Surround

Back Right

Back Left

Output

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Subwoofer

Output

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Connecting Surround Back Speakers

For full 7.1 surround sound, you'll want to connect

surround back speakers, which must be connected to

an external ampliﬁer.

Using two RCA cables, connect the RB and LB

outputs from the GFR-700 to the corresponding

RCA inputs on your external ampliﬁer.

Connect your right and left surround back speak-

ers to the external ampliﬁer.

Connecting a Subwoofer

The ".1" in 5.1 and 7.1 stands for the all-important

Subwoofer, also known as an L.F.E., or low-frequency

effects channel. No home theater would be com-

plete without a subwoofer rumbling your listening

area with thunderous bass.

Using an RCA cable, connect the S output from

the GFR-700 to the corresponding input on your

powered Subwoofer.

Notes:

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GFR-700 Owner's Manual

To conﬁgure your speakers,

see pages 34-36

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