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1. Introduction
Thank You for purchasing Tannoy PowerDual™ iQ i8B.
The iQ 18B is a dedicated sub-woofer designed for high definition sound reinforcement
at low frequencies. It comprises an 18” driver in a horn-loaded cabinet, giving increased
efficiency and improved LF output.
For optimal performance, the iQ 18B has been designed to operate in conjunction with
the iQ 10 mid/high horn-loaded cabinet, where the system is controlled by a dedicated
loudspeaker management system TDX2.
The cabinet is constructed from high quality 18mm birch plywood, featuring handles for
easier transportation, convenient M8 flying points and a pole-mount stand socket that
serves as a base for locating the iQ 10 mid/high speakers in the air.
2. Unpacking
Every Tannoy iQ 18B is carefully tested and inspected before packing. After unpacking,
please inspect your iQ 18B for any damage sustained during transit. In the unlikely
event of any damage, would you please notify your dealer immediately and retain your
shipping carton, as your dealer may ask the faulty unit to be returned for inspection.
3. Connectors/Cabling
The iQ 18B is fitted with two 4-pole Speakon™ connectors. Speakon™ has the
following advantages over EP and XLR type connectors: All terminations are solderless,
making life easier at the time of installation or when field servicing is required. Contacts
will accept 6 sq. mm wire with an outside diameter of up to 15 mm and a current rating
of 30 Amps.
The pins of the two Speakon™ sockets, marked input/output on the rear of the speaker,
are paralleled within the enclosure.
Tannoy has adopted the following wiring standard for iQ 18B: -
SPEAKON™
CONNECTOR
SIGNAL
Pin 1+ Positive
Pin 1- Negative
Should you encounter any problems obtaining Speakon™ connectors, please contact
Neutrik or its distributors on the following numbers: -
UK: NEUTRIK MARKETING: 01983 811 441
USA: NEUTRIK USA INC.: 732 901 9488
For a worldwide list of distributors, please contact Neutrik directly on: -
NEUTRIK AG: +423 237 2424
Or visit their website on http://www.neutrik.com/
Cable choice consists mainly of selecting the correct cross sectional area in relation to
the cable length and the load impedance. A small cross sectional area would increase
the cables series resistance, inducing power loss and response variations (damping
factor).
Connectors should be wired with a minimum of 2.5 sq. mm (12 gauge) cable. This will
be perfectly satisfactory under normal conditions. In the case of very long cable runs
the wire size should exceed this, refer to the following table for guidance: -