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Q
What is head
refurbishment?
A The removal of uneven wear caused by the tape or
film, the restoration of the original profile of the
head and fine finishing of the head surface.
Q
Why is the original profile important?
A To restore the machine’s original frequency
response, especially at low frequencies
Q
What type of heads can be refurbished?
A All tape heads from cassette to 2 inch
multi-track.
All film heads 16mm, 35mm, 70mm. Heads made of all
materials, mu-metal, amorphous, hard and soft
ferrite.
Heads for analogue recorders, high speed duplicators
and video audio.
Q When is
refurbishment advisable?
A If uneven wear, damage or a wide wear pattern is
visible or if it is apparent that the set-up of the
head on the head-block is incorrect. HF flutter,
especially on the outside tracks is an indication of
uneven and excessive wear. Refurbishment and
realignment at an early stage will lengthen
the available head life.
Q
How many re profiles can a head take during its
life?
A Difficult to give a definitive answer, but
normally two or three.
Q Is head
refurbishment cost effective?
A Yes, refurbishment cost is a tiny fraction of the
cost of replacement heads and the result is “as new”
Q
How can I tell if my heads are suitable for rework?
A Simple viewing with a magnifying glass will
identify wear, uneven wear and damage. Providing the
fine head gaps are not beginning to open, thus
indicating that the head is at the end of it’s life,
it will
be suitable for refurbishment. These fine gaps are
at right angles to the tape path and are in
the centre of the tracks. Opening gaps can be
identified by black lines becoming visible. An
example of a widened gap is shown in the
accompanying photograph of a Studer 24 track head.
OR Send the heads to Summertone for a FREE
assessment.
Q
Do I receive a condition report on my head?
A Yes, a before and after inductance reading and gap
condition for each track.
Q
Do I need to send just the heads or the whole head
block?
A This is at the discretion of the owner. Summertone
will refurbish single heads or offers a service to
reassemble the head-block , setting all the
parameters - height, rotation, square ness, -
leaving just
the azimuth to be set when the block is refitted to
the machine.
If you have any
further questions,
please contact us for Magnetic
Head Refurbishment
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