Abbingdon Music Research Reference Class Proffessional Monitor LS-77 - Manual (Page 44)

44
AMR recommends the following OptiArray Setups:
Room Size ≤≤≤≤≤35m 2 25m 2 –70m 2 50m 2 -140m 2 100m 2 -280m 2 200m 2 -480m 2
System Alpha Epsilon Iota Omicron Upsilon
(passive) (passive) (passive) (passive) (passive)
AM-77 1 1 2 4 8
LS-77 (pairs) 1 2* 4* 8* 16*
Power 360W 360W 720W 1440W 2880W
SPL (3m) 109dB 112dB 118dB 124dB 130dB
System Beta Zeta Kappa Sigma Omega
(active) (active) (active) (active) (active)
CCE 1 1 1 2 4
AM-77 1 1 2 4 8
LS-77 (pairs) 1 2* 4* 8* 16*
Power 560W 560W 1120W 2240W 4480W
SPL (3m) 113dB 116dB 122dB 128dB 134dB
*: OptiArray configuration
The Alpha system using a single pair of LS-77s with a total system power capacity of 360W, can sustain 109db
SPL at 3m listening distance for the complete system and is thus appropriate for moderate city appartments and
condominiums. From this AMR’s OptiArray® configurations extend to the awesome Omega system providing
a configuration suited to any size dwelling and listening room. This Omega system consists of 16 pairs of LS-77s
in OptiArray® configuration, with a total system power capacity of over 4480W. The Omega system can
sustain 134dB SPL at 3m listening distance for the complete system, which is more than many Concert Sound
Reinforcement Systems.