EFFECTS LOOP
—A parallel effects loop is provided so an out-board effects processor can be used with or in
place of the on-board Digital Effects unit. The return level from an external processor into the ¼” effects return jack
should be adjusted using the controls of the external processor. A ¼” EFFECTS CANCEL jack is provided on the
back panel to mute both internal and external effects via footswitch. Any standard single button latching footswitch
(with shielded cable) may be used. Signal is muted when the switch is closed. The on-board effects can be turned
off by using the program labeled “bypass”. All other on-board effects on the Shenandoah™ Acoustic 150LT can be
used in conjunction with an out-board effects unit plugged into the effects loop.
SPEAKER OUTPUT JACKS
– The Shenandoah™ Acoustic 150LT provides 2 parallel ¼” speaker output
jacks. Minimum total load is 4 ohms (2 x 8 ohm speaker cabinet). The Shenandoah™ Acoustic 150LT is factory
equipped with our GBE 1230, 12” speaker and a compression bullet tweeter presenting an 8 ohm load to the
amplifier.
POWER AMPLIFIER
– The power amplifier used in the Shen 150LT is a super-efficient class D pulse width
modulation amplifier which produces almost no waste heat. This ultra light amplifier technology offers unparalleled
performance and power and is the heart of the lightweight Shen 150LT.
POWER INPUT
– The Shenandoah Acoustic 150LT is shipped from the factory with a standard IEC type power
inlet connector and the appropriate detachable power cable for the market the amplifier was shipped to. The power
input section of the Shen 150LT is auto-configuring and will adapt to any input voltage from 100 – 240 volts without
any adjustment by the user. The AC mains fuse (with a spare fuse included) is located in the small slide out tray
on the lower portion of the IEC power inlet connector. Always replace with the correct value fuse as indicated on
the rear panel of the amplifier. The fuse value is the same for all input voltages and is only needed to protect the
primary wiring.
The power supply inside the chassis of the Shen 150LT is a highly sophisticated auto-configuring switch mode
power supply. This class of supply does the energy conversion through a very efficient process which contributes
to the light weight of the Shen 150LT. The power supply itself is internally protected and fused against catastrophic
faults.
PHANTOM POWER
– An internal phantom power source (13.6 volts) is provided for use with condenser mics.
This power source is on at all times and does not affect the standard operation of the amp, even when a condenser
mic is not used. We use the DIN 45-596-P12 volt standard which will operate virtually all of the live sound
reinforcement condenser microphones on the market. Some “boutique” externally biased condenser mics will not
be compatible and will require 48 volt phantom power. We suggest live sound condenser mics by: AKG (C4500B,
4000B , etc.), Audio Technica (AT3035, 3032, Pro Series ,etc.), CAD, Shure and Crown.
TWEETER LEVEL CONTROL
– The “rocker switch” tweeter level control provides three positions for
additional acoustic flexibility. The positions are: On, Off and –6db.
MONITOR SHAPED CABINET DESIGN
– This cabinet design offers two platforms so the cabinet can be
used in the normal upright position or tipped back towards the performer for more of a monitoring situation. Leaning
the cabinet back can change the tone of the amp and reduce boomy low frequencies.
SPEAKER STAND MOUNT
– A 1 1/2” speaker stand mount is provided for use with a speaker stand.
CAUTION!
•
Never set an amplifier on anything that will tip over or collapse under its weight.
•
These amplifiers are capable of producing sound pressure levels that may cause hearing loss.
•
There are no user serviceable parts inside these units. Always consult a qualified repair facility for service.
