Last Updated 4 hours ago
Overview
The Type 5791 Moleeno carries thirty-six 1 kW PAR64 lamps in nine columns of four. The head is 90 inches wide. With narrow spots at 100 ft, its chart gives 845 fc at beam centre over a 28.8 × 18.3 ft field. A full set of wide floods takes that field to 93.2 × 49.2 ft at 94 fc.
Key specifications
| Specification | Details |
|---|---|
| Head | Type 5791 |
| Lamp complement | 36 × 1,000 W PAR64, extended mogul end-prong |
| Fixture rating | 36,000 W maximum, 300 A maximum as listed |
| Supply rating | 120/240 V AC or DC. Match installed lamps to the intended supply. |
| Power connection | 3 ft cable with a 60 A Bates MC257G plug per bank |
| Dimensions | 90 × 41½ × 6½ in. |
| Head weight | 198 lb with cable and no globes, 260 lb with globes and cable |
| Mount | Removable 1⅛ in. steel yoke pin |
Replacement lamps
Mole-Richardson lists the following 1,000 W, 120 V lamps. Beam spread and colour depend on the globe installed.
| Lamp code | Beam | Colour | Rated life |
|---|---|---|---|
| FFN | Very narrow spot | 3,200 K | 800 h |
| FFP | Narrow spot | 3,200 K | 800 h |
| FFR | Medium flood | 3,200 K | 800 h |
| FFS | Wide flood | 3,200 K | 800 h |
| FGM | Narrow spot | Dichroic daylight | 200 h |
| FGN | Medium flood | Dichroic daylight | 200 h |
Look up replacement lamp codes for this fixture.
Strengths and limitations
- Nine pivoting columns give the head considerable horizontal coverage. The lamps also turn within each column to change the orientation of the oval beam.
- The lamped head alone weighs 260 lb. The frame separates into four sections and the yoke into two for transport. Check access against the assembled width before choosing the lamp position.
Practical uses
For a night exterior with the head 150 ft back, FFN very narrow spots give 471 fc at the centre of a field 37 × 23.8 ft. FFR medium floods cover 81 × 38 ft at 133 fc. These are bare-bank figures with the columns parallel. Once the columns fan out or the bank goes through diffusion, meter the working area again.
Output and photometrics
Centre-beam output in foot-candles for 36 matching 1,000 W, 120 V lamps. The columns point straight ahead and the lenses are turned for maximum horizontal width. The quoted field edges fall at approximately half the centre reading.
| PAR64 lamp | 20 ft | 30 ft | 40 ft | 50 ft | 75 ft | 100 ft | 150 ft |
|---|---|---|---|---|---|---|---|
| FFN · Very narrow spot | 26,650 | 11,862 | 6,662 | 4,274 | 1,901 | 1,072 | 471 |
| FFP · Narrow spot | 21,125 | 9,425 | 5,298 | 3,396 | 1,511 | 845 | 377 |
| FFR · Medium flood | 7,508 | 3,340 | 1,877 | 1,202 | 536 | 300 | 133 |
| FFS · Wide flood | 2,373 | 1,056 | 593 | 382 | 170 | 94 | 42 |
| FGM · Narrow spot | 13,540 | 6,054 | 3,410 | 2,186 | 973 | 552 | 237 |
| FGN · Medium flood | 4,767 | 2,120 | 1,192 | 768 | 344 | 185 | 80 |
Manufacturer’s original output and beam-size chart.
Photometric & exposure calculator
Estimate centre-beam illumination and the corresponding camera aperture from this fixture’s published measurements.
Estimated output
Select a configuration to calculate.
Manufacturer readings are for the stated optic, colour setting and full output, measured at the beam centre. Values between measured distances are interpolated. Point-source values outside those distances are approximate inverse-square estimates; large sources cannot be reliably extrapolated and are limited to their measured range. Exposure uses frame rate, shutter angle, ISO and the selected incident-meter calibration. Only the optics and diffusion explicitly listed in the measurement are included; additional modifiers, bounce, beam edges, ambient light, ND filters and camera exposure-index differences are not accounted for. Confirm critical exposures on set with a meter. Photometric source
Power and controls
Mole-Richardson specifies two toggles per four-light column and a separate 3 ft cable with a 60 A Bates MC257G plug on each bank. The complete head is rated at 36,000 W and 300 A maximum. Confirm installed lamp voltage and the actual feed configuration with the rental house.
Optics and mounting
The optional Type 57920 frame takes a 6 × 12 ft sheet on four Type 57869 arms. The tubular yoke carries a removable 1⅛ in. steel pin. The catalogue illustrates a folding crank stand with the assembly. Frame, fabric and support add to the lamped head weight.
Comparable fixture
The compact Nine-Light Molefay takes 650 W PAR36 lamps. For the 36-light Moleeno, order extended mogul end-prong PAR64 spares and identify the beam code for each. Nine-Light Molefay (Type 5541).
Field coverage and further reading
B&H’s archived Type 5791 listing identifies the removable yoke pin and the individual MC257G bank feeds, useful details when matching an older rental package. B&H Type 5791 listing.
Rental and used-fixture checks
Confirm whether the supplier quotes a bare or fully lamped weight, which lamps are fitted, and whether the 6 × 12 frame and its four arms travel with the head. Request the packing dimensions for the 90 in. assembly if the location has narrow doors or a freight lift.