Lubell Labs LL964C/H
Underwater Speaker (government sales only for harbor defense or acoustic barrier)
The
LL964H (harness mount) and LL964C (cage mount) are
high-performance piezoelectric underwater speakers developed,
patented, and manufactured by Lubell Labs of Columbus Ohio. Because of
the higher impedance of models LL964C and LL964H, long cable lengths with
minimal insertion loss are possible using standard SO cable.
For instance, four LL964C/H underwater speakers each having a
1.5km long 14/2 AWG cable may be connected in parallel (via an Ohmite D225K50RE adjustable power resistor) to each channel of a Crown XLi800 power amplifier, providing a resultant sound pressure level of 180dB/uPa/m at each
of the eight underwater speakers! Because of it's
rugged die-cast aluminum housing with 150 mil PVC overmold, the
LL964C/H may be used in rivers, lakes, and ocean without worry
of corrosion. The LL964C and LL964H are for sale to
OEM manufacturers, the military, and ocean engineering professionals only.
Lubell Labs also offers the portable model LL916C/H underwater speaker for competitive and synchronized swimming, and the permanent mount 9484 underwater speaker for new pool construction.
- Type: Piezoelectric
dual-piston Tonpilz (US Patent number 3,391,385)
- Frequency Response:
200Hz - 20kHz
- Outlet Level:
180dB/uPa/m @ 1kHz @ 42 Vrms drive
- Nominal Impedance: 32 ohms (varies with
frequency and cable length/gauge)
- Maximum Voltage: 50 Vrms
- Maximum Current: 1.5A
(100% duty-cycle)
- Required External
Resistance: 32 ohms total - combination of round-trip cable
resistance + series adjustable resistor)
- Operating Depth: 6' -
50' (1.83m - 15.24m)
- Finish: Blue PVC
- Cable: Choice of attached 25', 50', 100', 150', or 200' 18/3
PVC jacketed cable. (See OPTIONS below for bulkhead connector and mating SO cable.)
- Net Weight: LL964H-025 - 5.4 kg (12.0 lbs); LL964C-025
- 8.0 kg (17.6 lbs) with attached 25' (7.62m) cable
- Dimensions: LL964H - 233.68 mm (9.2")
diameter x 147.32 mm (5.8") axial length; LL964C -
279.4 mm x 279.4 mm x 198.12 mm (11"x11"x7.8") HWD
- Country of Manufacture:
USA
- Harmonized Tariff Code:
8518.21.0000
- Documents: Hook up diagram, CE Certification, RoHS/REACH Declaration, protective cage details, Instruction
guide
- Warranty: LL964H harness
mounted underwater speaker: 2 year limited;
LL964C cage mounted underwater speaker: 5 year limited
- OPTIONS: The LL964C is available with a Subconn MCBH3MSS
bulkhead connector (order LL964C-MCBH) and mating 18/3 SO underwater
pluggable cable (50' standard, custom length/gauge special order)
- Price: Call
Lubell Labs Inc.
712 S Yearling Rd.
Columbus, Ohio 43213 USA
Tel: (614) 725-2701
Fax: (614) 725-2702
email: sales@lubell.com
