5
1. Introduction
Thank you for purchasing Tannoy B475.
The Tannoy B475 is an 18” direct radiating bass loudspeaker system, designed for
high definition sound reinforcement at low and ultra-low frequencies. It will extend the
power bandwidth of Tannoy i/T range mid/high sound reinforcement systems to below
30Hz, making it ideal for effects in club, theatre and concert sound applications, with
ultra-low frequency enhancement and increased system headroom.
The B475 is intended for use on the ground and can also be close stacked, while the
main system is flown. This powerful loudspeaker is capable of delivering high sound
pressure levels with extremely low distortion while maintaining a uniform frequency
response throughout its dynamic range. This makes the speakers capable of
consistent intelligibility and tonal quality at any listening level.
The B475 comprises 1
×
18” high efficiency bass units housed in a heavily braced
optimally vented enclosure. Ruggedly constructed from multiple-ply hardwood, the
B475 features carrying handles, along with convenient flying points and a pole mount
socket for ground-stacked applications.
2. Unpacking
Every Tannoy B475 product is carefully inspected before packing. After unpacking
your loudspeakers, please inspect for any exterior physical damage, and save the
carton and any relevant packaging materials in case the loudspeaker again requires
packing and shipping. In the event that damage has been sustained in transit notify
your dealer immediately.
3. Connectors/Cabling
The B475 is fitted with two 4-pole Speakon™ connectors. Speakon™ has the
following advantages over EP and XLR type connectors: All terminations are
solderless; this makes 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 input
panel, are paralleled within the enclosure.
Tannoy has adopted the following wiring standard for B475: -
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:
N
EUTRIK
M
ARKETING
:
01983 811 441
USA:
N
EUTRIK
USA I
NC
.:
+1 732 901 9488
For a worldwide list of distributors, please contact Neutrik directly on: -
N
EUTRIK
AG:
+423 237 2424
or visit their website at: 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: -
