BASSMASTER (YBA-1) OPERATING INSTRUCTIONS
retyped by Eric Knudsen
Does anyone else have copies of any Traynor manuals? They are interesting historical
documents, despite the lack of technical information and peculiar advice. Here is a
Bassmaster manual - the original was just copied typewriter output:
BASSMASTER (YBA-1) OPERATING INSTRUCTIONS
GENERAL INSTRUCTIONS
l. Connect YBA-1 out put marked speaker to your speaker cabinet using the speaker
cord supplied.
2. Plug power cord into wall outlet.
3. Make sure "on/off" switch is on.
4. Leave standby switch off for about one minute while tubes warm up, and the
Bassmaster is ready for use.
USE OF THE POUR INPUTS AND CONTROLS
1. The Bassmaster has two channels, each having two inputs.
2. The first channel is a bass channel (although rhythm guitar players often prefer it
to the second channel) and is designed for bass. The lower input has more power than
the upper input.
3. The second channel is more powerful and has a clearer sound. It is designed for
guitar, the lower input is more powerful than the upper input.
4. Each channel has its own volume control.
5. When using the Bassmaster you may have noticed that while playing through one
channel the other channel's volume control affects the sound of the channel
that you are using. This is a design feature and many interesting results may be
obtained by experimenting with various settings.
6. The volume control of the channel being used should be turned up until a small
amount of distortion is heard ir. the speakers and then turned slightly back. This is the
optimum volume setting and the best projection will be obtained at this setting.
Turning the amplifier up any louder will only result in the destruction of the speakers.
7. The treble control acts in the same manner as any other treble control and the same
applies to the bass control.
8. Added features of the Bassmaster are the high and low range expanders. These
control change the tonal colouring of the amplifier to such a wide extent that it makes
the Bassmaster one of the most versatile amplifiers on the market to-day.
9. To adjust the four tone controls set them all to their mid position. Connect
your instrument to the desired channel, and adjust the volume control for that channel
(the other volume control should be left at zero).
10. Starting from left to right while playing adjust the treble, bass, low range
expander, and high range expander. Experimentation will find the most pleasing setting.
11. Between sets leave the amplifier on "Standby". The keeps the tubes warmed up and
allows you to use the amp instantly by simply turning the standby on.
NEVER TURN THE AMPLIFIER ON WITHOUT FIRST CHECKING TO SEE THAT THE SPEAKER IS
CONNECTED CORRECTLY. SERIOUS DAMAGE MAY RESULT FROM IMPROPER USE.
The Bassmaster (YM-1) may be used with a variety of speakers Here are the
recommended combinations;
l. YBA- 1 with single fifteen inch speakers (YS-15). The design is used primarily for
bass but may be used for guitar.
2. YBA-1 with single eighteen (YB-18A). This combination is excellent for bass guitar
where a superb Bass sound is required.
3. YBA-1 with twin twelve (YT-12). A very biting sharp sound can be obtained from this
speaker cabinet, It should be used with guitar only as bass will destroy the speakers.
These speakers have so much treble sensitivity that a hissing sound may be heard when
the treble controls are set at their extreme position.
4. YBA-1 with twin fifteen (YT-15). A very good deep bass sound can be achieved
using this setup. It can be used for either bass or guitar. It has found limited use for
the latter.
5. YBA-1 with four tens (YF-10). Less bass, but more punch is the result of using four
tens, which is also suitable for either bass or guitar.
6. When using the YBA-1 with an extension speaker, the extension speaker should
be the same as the main speaker cabinet. Mismatching cabinets may cause an inbalance
in power distribution.
The Bassmaster amplifier was originally designed for bass players. Soon, however,
guitar players started using it and because of this the high range expander circuit was
included in the amplifier. The Traynor engineers work long
hours to produce an amplifier which is suitable for both bass and guitar. Their
results show in the superb quality of the Bassmaster.
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