Lubell Audio Isolation Transformer Boxes
Lubell
Labs LL916 series underwater speakers operate at 20 Vrms, and are
designed for use with the Lubell Labs Audio Isolation & Matching
Transformer Boxes listed below, which in turn
connect 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 AC Series transformer boxes provide: 1) Transformer isolation of the underwater speaker from the amplifier for safety; 2) Impedance matching for proper amplifier loading; 3) A tuned RLC circuit that both limits current and flattens the frequency response during broadband operation (music, pink noise); 4) Volume matching of air and underwater zones ("Circuit Master" models). When connected to amplifier of designated wattage and impedance, the underwater speaker output of the transformer box will not exceed 20 Vrms @ 3.0A at full drive, and each underwater speaker will produce maximum sound pressure level of 179 dB/uPa/m @ 1kHz. A variety of transformer boxes are made to provide compatibility with existing or custom sound systems. Splitting transformer boxes (AC203E & AC211) are offered to allow connection / sound balancing of both air and underwater speakers to an mono or stereo amplifier or sound system.
Model AC102C (connectors for portable use only). Use with amplifier rated between 150 - 200 watts @ 8 ohms
5.5" x 3.75" x 2.5", 2.25 lbs
Useful for connecting up to four Lubell LL916C or LL916H portable underwater speakers to a 150 - 200 watt mono amp (40 Vrms), or up to eight LL916C or LL916H portable underwater speakers to a 150 - 200 watt stereo amp (4 parallel units per channel). Load rating of 32 ohms at 40 Vrms maximum. Connect AC102 inputs in parallel and in phase only. Connect one U/W speaker per box. Connect amplifier to GFCI only! Also useful for piggybacking an underwater speaker on to one or both channels of a 150 - 200 watt stereo PA system that has one 8 ohm air speaker connected to each channel.
Input of box is fitted with Switchcraft #11 1/4" (6.35 mm) mono phone jack, and output is fitted with Conxall 4182-3SG-300 (pin 3 hot). Supplied with 18" speaker cord with 1/4" male connectors.
Model AC202B (Special order - screw terminal I/O for permanent installation by contractor) - use with amplifiers up to 50 watts @ 8 ohms, or 100 watts @ 4 ohms (20 Vrms)
6.1 inch x 3.75 inch x 2.375 inch, 2.25 lbs
Used for connecting one in-wall LL916 U/W speaker (part of 9484 kit) to the 8 ohm tap of PA amplifiers not exceeding 50 watts @ 8 ohms or 100 watts @ 4 ohms (20 Vrms).
Model AC202C (connectors for portable use only). Use with amplifiers up to 50 watts @ 8 ohms (20 Vrms), or 100 watts @ 4 ohms (still 20 Vrms)
5.5" x 3.75" x 2.5", 2.25 lbs
Included with the Lubell CAWSS System. Used for connecting one Lubell LL916C or LL916H portable underwater speaker to the speaker output connector of the Chiayo StageMan or APEX Pro amplifier.
Input of box is fitted with Switchcraft #11 1/4" (6.35 mm) mono phone jack, and output is fitted with Conxall 4182-3SG-300 (socket 3 hot). Supplied with 18" speaker cord with 1/4" (6.35 mm) mono male connectors.
Model AC205B (Screw terminal I/O for permanent installation by contractor). Use with 25V constant-voltage (CV) amplifiers below (or Samson Servo 200 or 300 amplifier):
6.1 inch x 3.75 inch x 2.375 inch, 2.25 lbs
Connects to 25V speaker output of following commercial sound amplifiers (allow 37.5 watts consumption per LL916 / AC205B pair):
One to three Lubell LL916 (part of 9484 kit) - Bosch PLE-1P120-US power amplifier, or InterM A-120 powered mixer (USA sales only)
Four to six Lubell LL916 (part of 9484 kit) - Bosch PLE-1P240-US power-amplifier (only USA model has 25V tap - order from Lubell Labs)
Model AC205C (connectors for portable use only). Use with amplifiers up to 78 watts @ 8 ohms (such as the Phonic 415R included with Lubell LL916 Basic System)
5.5" x 3.75" x 2.5", 2.25 lbs
Also connects to 25V screw-terminal speaker output of following commercial sound amplifiers (allow 37.5 watts consumption @ 25 Vrms for each connected LL916/AC205C):
One to three LL916C or LL916H - Bosch PLE-1P120-US power amplifier, or InterM A-120 powered mixer
Four to six Lubell LL916C or LL916H - Bosch PLE-1P240-US power-amplifier
Input of box is fitted with Switchcraft #11 1/4" (6.35 mm) mono phone jack, and output is fitted with Conxall 4182-3SG-300 (pin 3 hot). Supplied with 18" speaker cord with 1/4" male connectors.
Model AC203E Circuit Master (connectors for portable use only). Use with amplifiers up to 78 watts @ 8 ohms
5.75" x 4.625" x 2.5", 2.75 lbs.
Allows connection of one Lubell LL916C or LL916H underwater speaker AND one EV ZX1 or Quadra10 eight ohm air speaker to a mono PA amplifier not exceeding 78 watts rms @ 8 ohms, such as the Phonic 415R or the InterM A-120 offered by Lubell Labs.
Operation: First, set the sound level of the underwater speaker using the master volume control on the amplifier. Then set the sound level of the air speaker using the volume control on the AC203E Circuit Master. Once this perfect balance between air and underwater sound levels is set, then the amplifier master volume control alone is used to control overall air & underwater sound levels as different songs are played.
Model AC211 Circuit Master (connectors for portable use only). Use with amplifiers up to 200 watts @ 8 ohms
5.75" x 4.625" x 2.5", 2.75 lbs.
Allows connection of one Lubell Lubell LL916C or LL916H underwater speaker AND one EV ZX1 or Quadra10 eight ohm air speaker to one or both channels of a portable mono or stereo PA system rated between 150 - 200 watts rms @ 8 ohms per channel (40 Vrms 10.6 ohm min). Operation: First, set the sound level of the underwater speaker using the master volume control on the amplifier. Then set the sound level of the air speaker using the volume control on the AC203E Circuit Master. Once this perfect balance between air and underwater sound levels is set, then the amplifier master volume control alone is used to control overall air & underwater sound levels as different songs are played.
Official Equipment Sponsor
USA Artistic Swimming
Lubell Labs Inc
712 S Yearling Road
Columbus, Ohio 43213 USA
Tel: +(614) 725-2701
Fax: +(614) 725-2702
email: sales@lubell.com
Lubell Labs AC Series transformer boxes provide: 1) Transformer isolation of the underwater speaker from the amplifier for safety; 2) Impedance matching for proper amplifier loading; 3) A tuned RLC circuit that both limits current and flattens the frequency response during broadband operation (music, pink noise); 4) Volume matching of air and underwater zones ("Circuit Master" models). When connected to amplifier of designated wattage and impedance, the underwater speaker output of the transformer box will not exceed 20 Vrms @ 3.0A at full drive, and each underwater speaker will produce maximum sound pressure level of 179 dB/uPa/m @ 1kHz. A variety of transformer boxes are made to provide compatibility with existing or custom sound systems. Splitting transformer boxes (AC203E & AC211) are offered to allow connection / sound balancing of both air and underwater speakers to an mono or stereo amplifier or sound system.
Model AC102C (connectors for portable use only). Use with amplifier rated between 150 - 200 watts @ 8 ohms
5.5" x 3.75" x 2.5", 2.25 lbs
Useful for connecting up to four Lubell LL916C or LL916H portable underwater speakers to a 150 - 200 watt mono amp (40 Vrms), or up to eight LL916C or LL916H portable underwater speakers to a 150 - 200 watt stereo amp (4 parallel units per channel). Load rating of 32 ohms at 40 Vrms maximum. Connect AC102 inputs in parallel and in phase only. Connect one U/W speaker per box. Connect amplifier to GFCI only! Also useful for piggybacking an underwater speaker on to one or both channels of a 150 - 200 watt stereo PA system that has one 8 ohm air speaker connected to each channel.
Input of box is fitted with Switchcraft #11 1/4" (6.35 mm) mono phone jack, and output is fitted with Conxall 4182-3SG-300 (pin 3 hot). Supplied with 18" speaker cord with 1/4" male connectors.
Model AC202B (Special order - screw terminal I/O for permanent installation by contractor) - use with amplifiers up to 50 watts @ 8 ohms, or 100 watts @ 4 ohms (20 Vrms)
6.1 inch x 3.75 inch x 2.375 inch, 2.25 lbs
Used for connecting one in-wall LL916 U/W speaker (part of 9484 kit) to the 8 ohm tap of PA amplifiers not exceeding 50 watts @ 8 ohms or 100 watts @ 4 ohms (20 Vrms).
Model AC202C (connectors for portable use only). Use with amplifiers up to 50 watts @ 8 ohms (20 Vrms), or 100 watts @ 4 ohms (still 20 Vrms)
5.5" x 3.75" x 2.5", 2.25 lbs
Included with the Lubell CAWSS System. Used for connecting one Lubell LL916C or LL916H portable underwater speaker to the speaker output connector of the Chiayo StageMan or APEX Pro amplifier.
Input of box is fitted with Switchcraft #11 1/4" (6.35 mm) mono phone jack, and output is fitted with Conxall 4182-3SG-300 (socket 3 hot). Supplied with 18" speaker cord with 1/4" (6.35 mm) mono male connectors.
Model AC205B (Screw terminal I/O for permanent installation by contractor). Use with 25V constant-voltage (CV) amplifiers below (or Samson Servo 200 or 300 amplifier):
6.1 inch x 3.75 inch x 2.375 inch, 2.25 lbs
Connects to 25V speaker output of following commercial sound amplifiers (allow 37.5 watts consumption per LL916 / AC205B pair):
One to three Lubell LL916 (part of 9484 kit) - Bosch PLE-1P120-US power amplifier, or InterM A-120 powered mixer (USA sales only)
Four to six Lubell LL916 (part of 9484 kit) - Bosch PLE-1P240-US power-amplifier (only USA model has 25V tap - order from Lubell Labs)
Model AC205C (connectors for portable use only). Use with amplifiers up to 78 watts @ 8 ohms (such as the Phonic 415R included with Lubell LL916 Basic System)
5.5" x 3.75" x 2.5", 2.25 lbs
Also connects to 25V screw-terminal speaker output of following commercial sound amplifiers (allow 37.5 watts consumption @ 25 Vrms for each connected LL916/AC205C):
One to three LL916C or LL916H - Bosch PLE-1P120-US power amplifier, or InterM A-120 powered mixer
Four to six Lubell LL916C or LL916H - Bosch PLE-1P240-US power-amplifier
Input of box is fitted with Switchcraft #11 1/4" (6.35 mm) mono phone jack, and output is fitted with Conxall 4182-3SG-300 (pin 3 hot). Supplied with 18" speaker cord with 1/4" male connectors.
Model AC203E Circuit Master (connectors for portable use only). Use with amplifiers up to 78 watts @ 8 ohms
5.75" x 4.625" x 2.5", 2.75 lbs.
Allows connection of one Lubell LL916C or LL916H underwater speaker AND one EV ZX1 or Quadra10 eight ohm air speaker to a mono PA amplifier not exceeding 78 watts rms @ 8 ohms, such as the Phonic 415R or the InterM A-120 offered by Lubell Labs.
Operation: First, set the sound level of the underwater speaker using the master volume control on the amplifier. Then set the sound level of the air speaker using the volume control on the AC203E Circuit Master. Once this perfect balance between air and underwater sound levels is set, then the amplifier master volume control alone is used to control overall air & underwater sound levels as different songs are played.
Model AC211 Circuit Master (connectors for portable use only). Use with amplifiers up to 200 watts @ 8 ohms
5.75" x 4.625" x 2.5", 2.75 lbs.
Allows connection of one Lubell Lubell LL916C or LL916H underwater speaker AND one EV ZX1 or Quadra10 eight ohm air speaker to one or both channels of a portable mono or stereo PA system rated between 150 - 200 watts rms @ 8 ohms per channel (40 Vrms 10.6 ohm min). Operation: First, set the sound level of the underwater speaker using the master volume control on the amplifier. Then set the sound level of the air speaker using the volume control on the AC203E Circuit Master. Once this perfect balance between air and underwater sound levels is set, then the amplifier master volume control alone is used to control overall air & underwater sound levels as different songs are played.
Official Equipment Sponsor
USA Artistic SwimmingLubell Labs Inc
712 S Yearling Road
Columbus, Ohio 43213 USA
Tel: +(614) 725-2701
Fax: +(614) 725-2702
email: sales@lubell.com