Motion Sound LP-120 User Manual
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WARNING: “floating” grounds can be dangerous—use caution and check ground leakage
current or have a qualified technician do it for you.
The Low-PRO transformer is located on the bottom toward the left side and front of the cabinet.
DO NOT route cables under the PRO-3Tm near this area—it can cause inducted “hum”.
-Speed Controls-
All controls are factory set to simulate a properly operating 147-type speaker. Please make note
of their position before attempting any adjustments.
There is a slot located in the rear panel with four adjustable pots accessible with a screwdriver.
These controls can be used to set the parameter to your preference.
Typical Settings:
Internal Time
S=Slow
1.5s
F=Fast
.175s
A=Acceleration
8s
D=Deceleration
5s
-Belt Adjustment-
The belt should not need to be adjusted unless operation time exceed 10,000 hours, or other
service requires belt removal. All acceleration and deceleration dynamics are controlled
electronically and unless noticeable slipping or noise occurs, the belt tension is okay.
If you do encounter problems call Motion Sound, 801-265-0917 to order a new belt. Belt
Replacement Instructions will be sent with the new belt.