Speaker Guidelines

Rear Panel —continued 9

3.Accompaniment - Connect a CD player or drum machine to either the Mono Return or Stereo Return jacks according to the Mode of Operation {P}. Control accompaniment volume at its source and with Effects Blend {J}.

V.TUNER OUT - Plug in your instrument tuner. Use the Speaker switch {M} to mute audio output while tuning.

W.BALANCED OUTPUT - A fully featured, true electronically balanced, XLR output; suitable for studio and live performance mixing consoles:

•LINE / DIRECT - Supplies the Balanced Output with signal that either includes or bypasses the onboard tone shaping circuits:

LINE (Include EQ)

DIRECT (Bypass EQ)

•GROUND / LIFT - Disconnects the Balanced Output ground connection (pin-1) which may reduce ground loop noise from non-standard wiring. Normally leave this switch out:

GROUNDED (normal)

GROUND LIFTED

•XLR PAD - Adjusts the signal level of the Balanced Output jack to accommodate a variety of equipment connections.

XLR Wiring (American Standard):

1 Ground

2 Positive

3 Negative

Shown

here

are

the

total

impedance

load

• DO NOT connect speakers with a total impedance

calculations for various speaker impedance

combinations. Ideally, the total impedance load

load below the minimum rating of your amplifier to

of your speakers should equal to the minimum

prevent damage to your equipment.

impedance rating of your amplifier.

Operating

• ONLY connect speakers with a total power handling

below the minimum impedance rating can overheat

capacity that is above the power output rating of

the amplifier and cause damage.

Operating

your amplifier to prevent damage to your equipment.

above the minimum impedance rating will

• ALWAYS switch your system power OFF before

reduce

the

amplifier’s

maximum power

output.

connecting or disconnecting speakers.

Notice that different combinations of speakers

• ONLY use unshielded speaker cable of 18 gauge or

heavier (such as 16 or 14 gauge) for speaker

can equal the same total impedance load. If

connections. Shielded instrument cable WILL NOT

their impedances are the same, each speaker will

work and may damage your equipment.

receive equal power from your amplifier. However, if

• ONLY connect one amplifier to your speaker enclosure(s).

impedances

are

not

the same,

speakers

with

the

lowest impedances will receive

the

most power. For

Two amplifiers WILL NOT work and may damage your

example, if you connect an

8–ohm and a 16–ohm speaker

equipment.

to the same output, the 8–ohm speaker will be twice as loud

Use the impedance ratings on your amplifier and speakers

as the 16-ohm speaker. Take this into consideration when

to determine if a particular combination of speakers is

calculating power handling capacities and when positioning

appropriate for your amplifier. NOTE: All SWR® bass speaker

your bass speaker enclosures.

enclosures, as well as most others, are wired in

parallel

For an in-depth discussion of impedance and power rating

(NOT in series), therefore, these guidelines apply

only to

issues, go to swrsound.com and

click on “Press,”

then

parallel speaker connections.

“Articles,” then “Plug and Play: Setup Tips for Amps and Speakers”—an article by SWR® founder Steve W. Rabe that ran in the August ’92 issue of Bass Player Magazine.

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