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9. Maintenance
The FRm series requires little maintenance. If the
loudspeakers have been well looked after and kept in a
dry environment they should give many years of service
with no problem. The connections on the rear, to the
filter box and amplifier will benefit from “breaking and
making” at least annually by disconnecting and
reconnecting several times to ensure a good low
impedance connection is maintained. Copper wire is
prone to corrosion, the exposed wire should be bright
and shiny, dull corroded wire will have a high resistance
and degrade the sound. The drive units are quite strong
and are able to deliver a high level of sound in a medium
to large room. Handling power is approximately 75 watts
of undistorted speech and music (NOT continuous sine
wave). Amplifiers of up to 100 watts may be used.
However the FRm series does not have any protection
against abuse and accidents so beware of “switch on
thump” and other accidental surges.*
Cabinet Care
To remove dust we suggest gentle wiping with a slightly
damp cloth with an occasional polish. The cabinets are
real veneer. Avoid sunlight as this will both fade the
natural colour and damage the drive unit, UV light in
sunlight will cause premature deterioration of the cone
roll surround and may distort the shape of the cone
causing mis-alignment and failure of the unit. *
*These faults are not covered by the warranty.
10 Specification & Features
Typical values
•
Icon Audio developed and manufactured drive
units.
•
Rare earth alloy high frequency dome
•
Custom paper cone for optimum bandwidth
•
Long throw coil and roll surround for extended bass
•
94db approx output, 1 watt @1 meter (2.83v)
•
Designed and tested with low-med power valve
amplifiers
•
Suitable for amplifiers 6 to 100 watts, @ 8 ohms
•
Audio grade MDF cabinet
•
Real wood veneer finish
•
Standard finishes rosewood cherry or walnut
•
Plinth and adjustable spikes included
•
FRm 3 Size in cm W29, D28, H104, 29kg ea
•
4n Copper wire voice coil
•
High purity 99.99% copper multi strand internal
cable
•
Low impedance choke
•
Soldered internal connection for long term low
resistance
•
Supplied filter box with high quality components
•
Heavy gauge custom chokes for low impedance
•
All hand wired point to point without printed circuit
•
Nominal DC impedance 7Ω (full range unit)
•
Freq response FRm3 30 - 18kHz (room dependant)
•
Solen/SCR hi fi audio capacitors (recommended
Jensen upgrade Copper foil upgrade available)
•
Gold plated Input & speaker terminals
•
ROHS compliant
