By Lubell Labs Inc.


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Model # AC205B

Product Description

Lubell Replacement 25V Transformer Box - Required for use with Lubell LL916 U/W speaker.  One per speaker, parallel inputs only.

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.

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?     Asked on 1/11/2013by Guest

I am trying to replace my old AC204 transformer box used on a Lubell LL916 speaker. It has a 4 pin connector. Is the AC205B also a 4 pin?
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A  Answered on 1/11/2013 by InyoPools Product Specialist Patrick P.

Unfortunately the new transformers, including the AC205B Lubell 25V to 20V Transformer Box, have a 3 pin connection. The manufacturer Lubell suggests servicing/rewiring the speaker to accept the new style connection. You can reach them at (614) 235-6740.
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?     Asked on 2/1/2019by Analia Garcia. AVI-SOL project specialist

I HAVE TO INSTALL 12 LUBBEL AC205B IN THE BACK OF A 19 INCH WIDE RACK. IS THERE A MOUNTING KIT ASOCIATED WITH THIS PRODUCT?
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A  Answered on 2/1/2019 by InyoPools Product Specialist Steve M.

Good Morning, after researching an available mounting kit for the Lubell 25V to 20V Transformer Box - AC205B. It appears that a mounting kit does not exist in our inventory, and from what I could find one does not exist in another place on the Internet. We apologize for the inconvenience.   
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