Laney B1 User Manual Download Page 7

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Laney

Active Crossover Level

This control sets the level of Hi signal sent to the Amp1/Hi

output speaker socket

(28)

.along with the level of signal appearing at

(32)

It should be

used to balance the level of the high frequency cabinet, a 4 x 10 cabinet for example
against the level of the sub bass cabinet, say a 1 x 15", to get the desired sound.

Hi Socket

This socket should be used to supply a Hi frequency signal to an external

amplifier should additional sound reinforcement be required. It is worth mentioning here
that this feature is continually available and is not reliant on the amp mode being selected
to run in Bi amp mode.

Lo Socket

This socket should be used to supply a Lo frequency signal to an external

Footswitch socket

5 pin socket for connecting the dedicated FS5 footswitch to the

unit.

Power amp mode switch

This switch selects the mode of operation of the B1 power amplifier section (See P7 for B2/B3

description) Three modes of operation are available Dual Mono, Bi-amp and Bridge. In Dual Mono mode the two onboard power
amplifiers run in parallel supplying 750 watts RMS of full range signal to each of the two output connections

(28,30)

. In Bi amp mode

the onboard active crossover splits the frequency response of the pre amplifier and sends any frequencies below 150Hz to one power
amplifier and anything above 150Hz to the remaining power amplifier. Each of the power amplifiers has a dedicated output. See

(28,

30)

in Bridge mode both individual power amplifier sections operate together producing 1500watts RMS of full range signal.

Preamp out

This socket provides a line level pre amp out signal. Can be used to slave two B1/B2/B3’s together using the second B1’s

aux in socket

(37)

Aux in

The Auxiliary input socket allows the user to connect external devices into the B1/B2/B3 bypassing the pre amp. The user can

also connect external sound devices such as CD & Mds or drum machines. The Aux socket is a mono socket, so stereo playback from
any device will not be heard.

Effect Loop Send

Socket provided for connecting external effects processors to the B1/B2/B3. The send to the effects loop should be

connected to the input of the effects processor. All connections should be made using high quality instrument cable

Effects Loop Mode Selector

The effects loop can be run in three different modes depending upon the needs of the player. For

connecting to studio style rack processors the FX loop should be run at a level of 0dB, for connecting floor mounted effects such as old
analog pedals the fx loop should be run at -10dB. In Bypass mode all effects loop sockets, both send and return are isolated from the
signal path. The effects loop on the B1/B2/B3 is run in an insert mode, affecting 100% of the amplifier signal.

Effects Loop Return

This socket is provided for connecting the return of an external processor to the B1/B2/B3. The output of the

external effects processor should be connected to the effects loop return on the B1/B2/B3. All connections should be made using high
quality instrument cable

DI Pre EQ/Post EQ Selector

This allow the player to select the origin of the signal sent as a Direct Inject output to an external

device such as a mixing desk, recording device or an additional power amplifier.
The user can obtain a signal from two distinct sources Pre EQ i.e. directly after the pre amp mix control, and before any onboard EQ has
been applied or Post EQ i.e. directly before the volume control after all EQ as well as any effects connected to the B1/B2/B3 have been
applied to the signal. The DI signal from the B1/B2/B3 is an electronically balanced signal.

DI XLR Output

The XLR socket is provided for connecting the B1/B2/B3’s electronically balanced DI signal to an external device

such as a mixing desk, recording device or an additional power amplifier.

B1 Rear Panel - Continued

B series MANUAL

Dual Mono

Bi-amp

Bridge

Aux

Effects

Loop

Effects