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Overview
The three-circuit Type 3331 puts three individually controlled colours in a 32-inch section of pipe. Mole also made a single-circuit version with the same three reflector cells.
Key specifications
| Specification | Type 3331 |
|---|---|
| Lamp positions | 3 cells, up to 1,000 W each |
| Head length | 32 in. |
| Maximum connected load | 3,000 W, all cells at 1,000 W |
| Factory circuit options | 1, 3 |
| Filter-frame holders | 1 × Type 33920 (3-cell) |
| Reflector | Molebrite Alzak aluminium in each cell |
| Lamp socket | Double-ended, recessed single-contact |
Circuit versions
| Circuits | Cells per circuit | Maximum per circuit | Current at 120 V | Head weight¹ |
|---|---|---|---|---|
| 1 | 3 | 3,000 W | 25.0 A | 7¼ lb |
| 3 | 1 | 1,000 W | 8.3 A | 7½ lb |
¹ Bare head. Frame holders, filter frames and mounting hardware add weight.
Replacement lamps
| Lamp codes | Per lamp | Supply | Rated colour | Current per lamp |
|---|---|---|---|---|
| FCM / FHM | 1,000 W | 120 V | 3,200 K | 8.3 A |
| EME / EMF | 800 W | 240 V | 3,200 K | 3.3 A |
| EJG / EMD | 750 W | 120 V | 3,200 K | 6.3 A |
| FDF / FDN | 500 W | 120 V | 3,200 K | 4.2 A |
| FCL / FCZ | 500 W | 120 V | 3,000 K | 4.2 A |
| EHM / EHZ | 300 W | 120 V | 2,950 K | 2.5 A |
Mole specifies a T-3 lamp, 4 11/16 in. overall, operated horizontally within 4°. EME and EMF are the 240 V pair. For examples of these lamp codes in other heads, see FCM · EMD · FDN · FCZ.
Strengths and limitations
- The 32-inch body places 3 cells along a straight line. Each factory circuit can carry its own gel colour and dimmer cue.
- With 3 × 750 W EJG lamps, the connected load is 2,250 W. Gel choice and distance from the backing determine how much light reaches the wall.
Practical uses
For a three-colour backing, repeat the gel order in the next head. Bringing up one colour at a time makes a reversed set of frames easy to spot from the camera position.
Output and colour
Mole’s strip specification lists the lamps and circuit loads. It gives no measured foot-candles at a stated wall height or setback for the Type 3331. Take readings up the wall, then halfway between adjacent heads to check overlap.
Power and controls
The Type 3331 has no onboard switch. Mole specified 36-inch leads for each circuit and offered different plugs. Identify which cells each lead serves before patching the dimmers. The per-circuit ratings above are for 1,000 W lamps on 120 V.
Optics and mounting
Each filtered cell takes one Type 27240 Molequik frame. The front holders for this length are listed in the specification table. Mole lists the Type 26530 bracket pair for floor use and the 26120 end hangers for pipe mounting. Its removable front holder increases the fixture profile to 13⅛ in. high by 12¾ in. deep. Manufacturer’s accessory drawings.
Comparable fixtures
The six-light Type 3361 can carry two repeats of the same three-colour sequence in a single housing. Compare model lengths and circuits.
Field coverage and further reading
MPS Film Rentals lists a three-lamp Molorama. The rental listing uses lamp count as its identifier. Confirm the type number and circuit version when ordering. MPS specialty lighting inventory.
Rental and used-fixture checks
The three-circuit casting and hardware are listed at 7½ lb as a head. The single-circuit version is 7¼ lb. Verify the leads as well as the type plate.
Documentation
- Mole-Richardson Molorama specification and lamp tables (PDF)
- Manufacturer’s Molerama series page and colour layouts
- Molorama filter holders and mounting hardware
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