Product Description

Lubell 25Vrms 16 ohm 78W Transformer Box

The Lubell Labs 20 volt LL9816 and LL916 underwater speakers must be connected to a Lubell Labs transformer box, which in turn connects to a Lubell Labs approved UL listed amplifier of the correct power and impedance rating. The transformer box and amplifier must be kept in a dry air conditioned area, and AC operated amplifiers must be connected to a GFCI protected AC outlet.

Lubell Labs die-cast transformer boxes provide electrical isolation of the underwater speaker from the amplifier for safety, impedance matching for proper amplifier operation, and a circuit that both limits current and flattens the frequency response during broadband operation (music, pink noise, etc.).  When connected to amplifier of designated wattage and impedance, the output of the transformer boxes will not exceed 20 Vrms @ 3.0A at full drive, and each underwater speaker will produce maximum sound pressure level of 180dB/uPa/m @ 1kHz. A variety of transformer boxes are made to provide compatibilty with existing or custom sound systems. Splitting transformer boxes are offered to allow connection of an air and underwater speaker to an amplifier or sound system.

The AC205C Transformer Box Connects to 25V speaker output of following commercial sound amplifiers:

One speaker - Peavey UMA352 or PVi4B, Bogan C60, TOA BG-1060, InterM A-60
Two speakers - Peavey IPA/UMA752, Bogan C100
Three speakers - Peavey IPA/UMA1502
Four speakers - Peavey IPA/UMA1502
Five - six speakers - TOA P-924MKII, A724
Eight speakers - Peavey IPA300T

• For use with one LL916C or LL9816 U/W speaker & UL listed amplifier up to 78W @ 8 ohms, or to 25V line(37.5 watts consumption).
• 1/4" phone jack input w/cord.
• 5.5" x 3.75" x2.5", 2.25 lb.