Motion Sound SR-112 Owner's manual
- Category
- Guitar accessories
- Type
- Owner's manual
1
SR-112
SPINDOCTOR
-WARNING-
The SR-112 SPINDOCTOR can product high sound pressure levels. Hearing
protection is advised. The SR-112 MUST be earthed and connected to a correct
power source.
-SPECIFICATIONS-
Speaker: 12” Eminence Legend 121 guitar speaker, 150-watt, 8 ohms
Frequency Response: 100 – 5 kHz.
Motor Control: DC servo system
Speaker Switch: 20 amp relay
Dimensions: 15.5” H, 20” W, 14.5” D Weight 35 lbs.
Power Voltage Frequency Watt Fuse
US 117 VAC 50/60 Hz 100 2 amp
Europe 230 VAC 50/60 Hz 100 1 amp
Japan 100 VAC 50/60 Hz 100 2 amp
Fuse Location: The fuse is located in the power inlet module. Use only recommended fuse
ratings!
2
-DESCRIPTION-
The Motion Sound SR-112 SideWinder is a state-of-art satellite rotary speaker with all of the
controls necessary to produce real rotary sound from your own amplifier. Foot-switch control of
speed and speaker selection is featured. The SR-112 provides modern control and flexibility of
classic real rotary sound.
-SOUND-
-what to expect-
Since the sound emanating from the SR-112 is partially deflected tot he sides of the cabinet, the
SR-112’s treble response and other sound nuances will be different from that of a direct radiating
speaker. The size and shape of the stage and venue will also affect the directed sound from the
SR-112 as it reflects off walls and ceilings. The overall volume obtained will be equivalent to
that of a single 12’ speaker combo amp or cabinet but will be spread around in a lush three-
dimensional sound field. Users will find it helpful (if your amplifier is capable) to set up a
channel with EQ just for the SR-112.
-WARNING-
The SR-112 contains an 8 ohm 150 watt speaker. Your amplifier must be compatible with this
load impedance. If you are not sure, contact a technician or your amplifier’s manufacturer.
Motion Sound is NOT responsible for amplifier damage due to improper connection or use.
-CONNECTION OPTIONS-
The SR-112 contains a 20 amp relay used to switch the speaker signal between your amplifier’s
speaker(s) and the SR-112’s internal speaker. The relay is controlled from the foot-switch and
allows use of either the rotary SR-112, or your existing speaker(s). There are four general
connection situations discussed below. If your amplifier/speaker does not fit one of these
categories, seek technical help.
Dedicated Amplifier Head: If you use a separate amp head dedicated to the SR-112, you need
only connect the amp’s speaker output to the SR-112’s amplifier jack. DO NOT use the speaker
button on the foot-switch in this mode because it will turn off the speaker load to the amplifier.
Amplifier Head and Separate Speaker Cabinet: Connect a ¼” speaker cord from your amp head
speaker output to the amplifier input on the SR-112. Connect a second ¼” speaker cord from the
SR-112’s speaker jack to your speaker cabinet.
3
Combo Amps with Direct Wired Speakers
There are many possibilities in this group and it is possible to damage your amplifier and the SR-
112 if the connectors are not installed correctly! If y ou are at all unsure, contact a qualified
technician for assistance.
You will need to add a ¼” male to the speaker wires from your amplifier electronics (head) and a
¼’ female to the cabinets built in speaker wires. When you are not using the SR-112 simply plug
the combo amplifiers ¼” male into the ¼” female to the speaker(s). The amplifier will function
normally. When using the SR-112 follow the “combo amp with ¼” speaker connection”
instruction.
Control Panel Speed Adjustments
Three knobs affect the speed of the SR-112’s rotor and are usually pre-set as indicated but are
variable to accommodate user preference. It is possible to have two different pre-set speeds and
toggle between them.
Baseline: Set this speed first as the pedal speed is added to baseline. This control operates from
stop to about 50% of maximum and is usually set to “3-6”. This slower speed is used for a range
of “chorus” or slow tremolo effects.
Pedal: When selected, this control is added to the baseline to provide “classic” rotary tremolo
sound. Typical settings are “7-9” depending on baseline speed. Some experimentation will
provide two very useful speed settings with the baseline and pedal controls.
Acceleration: Adjusts the amount of time it takes to ramp up or down between speeds. A setting
of”5” is typical. Some players like to slow this down so they prolong the rate change. (“0” is the
longest time and “10” is the fastest.)
Footswitch Operation
The footswitch controls speeds and speaker switching for the SR-112. If the speed LED is “on”
the pedal speed is selected. If the LED is “off” the baseline speed control is selected.
If the speaker LED is “on” the SR-112’s internal speaker is operative. If the speaker LED is
“off” the speaker output jack is selected for connection to stationary speaker(s).
Fuse and Power
The SR-112 must be grounded and connected to a proper power source. The fuse is in the AC
power inlet module. Replace the appropriate value only.
XLR Microphone Output
The SR-112 contains a built in microphone (600 ohms nom.) for connection to a PA mixer.
4
Service
The SR-112 does require any service or lubrication. All access is through the bottom panel.
Speaker
The SR-112 is supplied with an 8 ohm 150 watt Eminence Legend 121 guitar speaker mounted
with screws into steel inserts. Access is through the bottom panel.
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Motion Sound SR-112 Owner's manual
- Category
- Guitar accessories
- Type
- Owner's manual
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