Ampeg dan armstrong guitar service manual

Page 2

A considerable amount of effort went into the
design of this instrument; this booklet will help you
obtain maximum performance from your Armstrong
Guitar or Bass. I

With a little care and attention, your instrument
will last a long time and will function as a good
instrument -- consistantjn tune, comfortable to play,
and supplying proper sound.

~- ADJUSTING THE BRIDGE -

First, after carefully tuning your guitar, determine
whether or not the bridge is in its best position.

1. Play the harmonic at the 12m fret lst string

(high E).

2. Play the fretted note at the 12th fret ist string.

3. Compare; (Assume that the harmonic is in
tune.) If the fretted note is sharp (higher than
the harmonic) the string is too short so move
the wooden saddle away from the neck to make
the ist string longer. if the fratted note is flat
llower than the harmonic) move the saddle to-
ward the neck thereby making the string shorter.
Continue shifting the saddle until both har-
monic note and fretted note are the exact same
pitch.

4. Repeat the above steps with the 6th or low E
string and be careful not to affect the adjust-
ment of the high string end of the bridge.

This bridge adiustment must be made often to
maintain true intonation, since string conditions
change (deteriorate) constantly on any guitar with
any strings. When it is no longer possible to adjust
intonation in this way-within the normal limits of the
bridge's ability to adjust, it is necessary to change
strings.

This inability to adjust does not mean that the

neck is warped, or frets are "off" or any other no -
sense. Bad strings simply can't e tune . If new

strings present bridge adjustment difficulties try

another brand.

Bridge height is preset at the factory and is not
necessarily the best height for you but it does pro-
vide very low action. If you wish the action higher
you may raise it by replacing the bridge saddle alA
ready on the instrument with one of the other higher
saddles supplied. Loosen the strings and try other
saddles until string height suits you.

2

-- REPLACING STRINGS - $

if strings are put on the instrument correctly no
slipping will occur and the stretch" and "break in"
period will be reduced.

} DIRECTION or TURN

D l
G,
D or 4m
{ 6 or 3rd
/ U 2o]

CORRECT WAY TO STRING INSTRUMENT

On basses only the G and possibly D strings can be
anchored this way. On bass A and E strings, friction
acts pretty well anyway. Always wind down on the
tuning machine, below the hole. Two or three turns,
at most, around the peg is plenty for any metal string.

- ADJUSTING THE NECK -

A warped" neck has been blamed wrongly for
many guitar disorders. A good neck must be some-
what flexible so that it may be adiusted in order to
compensate for weather, time and a wide variety of
string gauges and tensions. The guitar neck should be
absolutely straight always. There is no reason to
tolerate a bowed or "warped" neck.

To straighten the neck on your DAN ARM-
STRONG bass or guitar, remove the cover over the
neck rod adjustment nut, on the head piece. Check

ii.