Fig 1. Ellipsoidal spotlight cross section
Congratulations on your new TwinSpin™. It will add an exciting new dimension to your pattern projections... motion!
PREPARING THE TWINSPIN™
Before inserting patterns or a TwinSpin™ in your fixture, it is important to align the lamp. Position it in the reflector so that the circle of light is as smooth and even as possible. When the field of light is truly flat, it will appear to be slightly darker in the center for a few moments (this is an optical illusion).
When the lamp is positioned too far into the reflector, the center of the field will look 'hot'. When the lamp is positioned too far back out of the reflector, the center will be dull and shadowed and the outer rim will look bright. Hot spots can cause warping of the patterns and may damage delicate designs.
INSERTING A PATTERN IN THE TWINSPIN™ (See Fig. 2)
With the TwinSpin™ lying on a flat surface, center a pattern in the shallow well on the lip of the circular opening, then secure with a retaining ring.
- Begin by pushing one end of the spring ring into the groove. Hold firmly in place with finger, pressing the ring against the pattern.
- Holding the ring firmly, work the ring around until it is completely in place.
- Finally, allow the hooked end to snap into place. Press the ring down gently with your finger to make sure it is tightly inserted all the way around.
INSERTING A TWINSPIN™ INTO THE FIXTURE
First, be sure that the lamp is properly aligned when preparing the fixture. Next slide the TwinSpin™ straight down into the iris slot in front of the pattern holder. Be sure it is seated straight and as far down as it will go. Secure the TwinSpin™ power cord so it does not contact the fixture housing. There is a safety cable mount hole in the TwinSpin™ near the motor. Use safety cable when mounting overhead.
Fig 2. Inserting retaining Ring
Tip: When using older warped patterns, be sure any
protruding edges are bent away from each other in the TwinSpin™ so they can't catch on each other while rotating.
The TwinSpin™ 6-step transformer can be plugged into any 120 volt outlet (230 volts if you have 230 volt model) and patterns will rotate at full speed when the transformer is set to 12 volts. You can also set the step switch anywhere between 3 and 12 volts to vary the speed, no dimmer is required. Do not use the 1.5 setting as voltage fluctuations may cause the TwinSpin™ to stall. The lowest setting should be 3.
Using a Dimmer
To easily start, stop, and adjust the rotation speed, plug the TwinSpin™ into a dimmer. Most types of dimmers will work, although speed range and resolution may vary. Electronic dimmers slightly clip the top and/or bottom of the speed range, but offer good resolution. The best results are produced by autotransformers.