Zeus™ ZRM1 Ringflash, Ringmaster

It’s looks likea alienbees ABR800 Ringflash. but product name is Zeus ‘ Ringmaster’

and need their own brand’s powerpack. see more detail about this.

The ZEUS™ ZRM1 RingMaster (requires a Z1250 or Z2500Power Pack for use) is a high-power ringflash system for professional use where very high power levels and exposure values are required. With its extremely compact and lightweight design, the RingMaster is easy to use with most popular pro or semi-pro cameras. The design accommodates cameras with lenses up to 4 inches in diameter, having a full range of adjustments for use with cameras of nearly all heights and depths. The RingMaster incorporates dual fans, eight halogen modeling lamps and two semi-circularflashtubes, providing short flash durations and high power handling capacity.

Each ZRM1 RingMaster Arrives With:

• the 10-inch ring reflector
• a set of eight 20-Watt, 24-volt modeling lamps
• two half-circle flashtubes (daylight-balanced)
• the front cover / diffuser / gel holder
• the universal camera mounting bracket with adjustable camera platform, tripod and light stand mounting hardware
• the umbrella adaptor
• the 12-foot power pack cable (hardwired to the back panel)

The ZRM1 Ringmaster offers three different mounting options (opens in a new window).

Quick Specs:

• Max. Input Power = 2500 True Ws (at 700 Volts) with the Z2500
• Max. Continuous Usage = 20,000 Ws per minute
• Output (ISO100) with the standard reflector = f45 at 10′ (2500 Ws)
• Output (ISO100) with the 30″ Moon Unit = f32 at 10′ (2500 Ws)
• 1.5 pounds / 8″ diameter x 2.75″ depth / 4″ center lens hole

The ZEUS™ ZRM1 RingMaster is cross-compatible with all of the ABR800 AlienBees™ Ringflash accessories including the 30-inch Moon Unit, the 20º Grid, the ringflash gels/filters and theABRBAG carrying bag. The ZRM1 is also designed for use with the new 56-inch Moon Unit and newMoon Unit Carrying Bag.

ZEUS
SPECIFICATIONS

Maximum
Continuous Usage: The maximum continuous usage rating dictates
the practical usage limit. For example, if a Z2500SH Standard Head is
connected to a Z2500 pack (in either the A or B socket) with the full
power distributed to the one head and the flashpower adjustment
slider at the full position, the head would be set to flash at its
maximum power input level of 2,500 Ws. To stay within the maximum
continuous usage guideline, the head should only be fired 12 times
per minute (12 x 2,500 True Ws = 30,000 True Ws) at these settings.

The
maximum continuous usage rating for both the Z1250 and Z2500 power
packs is also 30,000 Ws per minute. With the Zeus Z2500 power
pack (at 2,500 Ws), the maximum recommended usage rate is 12 shots
per minute (1 shot per 5 seconds on a continuous basis). With the
Zeus Z1250 power pack (at 1,250 Ws), the maximum recommended usage
rate is 24 shots per minute (1 shot per 2.5 seconds on a continuous
basis). Please note that these are preliminary estimates of
maximum continuous usage, to be updated with more testing.

Recycle:
The recycle specifications are measured as the total time needed by
the unit to recycle to full power (with the flashpower adjustment
slider on the power pack at the full position). The recycle time is
proportionately faster at reduced power settings.

The
ZEUS POWER PACKS and FLASH HEADS: Expected Output

ZEUS
Z2500 (2500 True Wattseconds): approximate f-stop output for
heads with standard 80° reflector or RingMaster head with
standard reflector, at 10′ – ISO100

With
two flash heads connected, output is for each head metered
separately. The combined output of both heads will be approximately
the same f-value as the single flash-head chart at top if both heads
are in the same position and aimed at the same subject.

Test
Conditions: Z2500 Power Pack with Z2500SH Standard Flash Head
(with standard 80º reflector) at 10-feet, ISO 100

These
are predicted readings with the ZEUS Z2500 Power Pack (2500 True
Wattseconds) at the various power settings. All readings for the ZEUS
Z1250 Power Pack (1250 True Wattseconds) will be one f-stop lower.
Please note that readings taken in other environments, with other
accessories and / or with various brands of flashmeters may vary.

(via http://www.white-lightning.com/zrm1.html)