One Control BJF-S100 User Manual

User's Manual V1.01 LEP INTERNATIONAL CO., LTD.
BJF-S100 with FS-P3S
BJF-S100
The One Control BJF-S100 brings the rock sounds from
the late 1960s to the early 80s, and is an ultra-small
"plexi-voiced" British amplifier sound that is still a
touchstone for "rock" guitar amplifiers. Light, loud,
expressive, and loaded with features. We have spent
many years in development with Björn Juhl (BJF) to bring
this amplifier to guitarists everywhere.
By combining a solid-state preamplifier with a Class D
power amplifier section, we have achieved a compact,
lightweight and loud tone. The all-analog circuit was
developed based on the model of the UK style vacuum
tube amplifier head produced since the 60s. This
solid-state circuit is designed to operate similar to the
actual vacuum tube amplifier; not just a reproduction of
the preamp, but also the operation and feedback of the
power amplifier.
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In addition, we incorporated a delay of up to 600 ms,
which reproduces "that" tape echo, often used at the
same time as the amplifier in the early 70s. Like the
tape head sound of that classic echo, if you repeat the
feedback the sound will become warmer and the
distortion will increase. This warm echo tone does not
intrude upon your base guitar sound and can add depth
and presence to the guitar tone.
The preamp section of the BJF-S100 consists of two
channels. The Lead channel creates a higher gain
distortion as when pushing the vacuum tube amplifier
hard. It not only distorts with similar sounds, but also
reproduces the expressive power and playing feel that
can be controlled by the volume knob and dynamic
touch on the guitar. In addition, the BJF-S100 further
expands the gain range and covers the brown sound
from the legendary "modded amp head" a young
guitarist in Los Angeles made history with.
The Rhythm channel is modeled on the clean tone used
by the legendary guitarists, especially in the late 60s
and early 70s. If you raise the GAIN, you can also make
the classic British overdrive tone, rich with overtones
and presence.
Both channels have a set of Master, Presence, Tone
Stack, and Delay controls so you can use each to create
the optimal tone for rhythm and lead and further change
the depth. Dial in a shimmery rhythm sound with just a
little ambience and air, then switch to a completely
browned-out lead tone with trippy echoes.
The BJF-S100 can create excellent tones with many
British-style guitar cabinets, including the classic "V30"
speaker, well known as one of the most common guitar
speakers. In particular, it has the great potential with
the Celestion G12MH and the Celestion EVH speakers.
The output section delivers 100 watts of output at 4Ω, 66
watts at 8Ω, and 30 watts output at 16Ω.
Controls
Lead Channel
・ GAIN: Adjusts the strength of the distortion. It covers up
to high gain.
・ MID: Adjusts the tone of the middle range.
・ BASS: Adjusts the tone of the low range.
・ TREBLE: Adjusts the tone of the high frequency.
・ TIME: Adjusts the delay time of the Lead channel.
・ LEVEL: Adjusts the volume of the delay on the Lead
channel.
・ REPEAT: Adjusts the delay feedback on the Lead
channel.
・ CLARITY: Makes the tone a little bright and clearer.
・ BODY: Inflates the middle and low frequencies of the
tone a little.
・ PRESENCE: Adjusts the tone of the higher frequencies
even more than TREBLE.
・ MASTER LEAD: Adjusts the volume of the entire Lead
channel.
Rhythm channel
・ GAIN: Adjusts the strength of the distortion. It covers up
to high gain.
・ MID: Adjusts the tone of the middle range.
・ BASS: Adjusts the tone of the low range.
・ TREBLE: Adjusts the tone of the high frequency.
・ TIME: Adjusts the delay time for the Rhythm channel.
・ LEVEL: Adjusts the volume of the delay on the Rhythm
channel.
・ REPEAT: Adjusts the delay feedback on the Rhythm
channel.
・ PRESENCE: Adjusts the tone of the higher frequencies
even more than TREBLE.
・ MASTER RHY: Adjust the volume of the entire Rhythm
channel.
CHANNEL: Switches the channel.
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Input/output terminals
・ INPUT: Connect the cable from the instrument or e ect
board.
・ EFFECTS LOOP: This is a series of e ect loops used
when connecting e ects between preamps and power
amplifiers. Connect the cable from SEND to the e ect
input and from the e ect output to RETURN.
・ PREAMP OUT: OUTPUTS A SIGNAL FROM THE PREAMP. It
is used when using an external power amplifier or for line
output through an external speaker simulator. If you
connect the plug here, the signal will not be output from
the SPEAKER setting.
・ SPEAKER: Connect the speaker cable. It will be 30W/16
Ω, 66W/8Ω, 100W/4Ω.
・ FS-P3B: Connect One Control FS-P3 foot switch (sold
separately).
・ FOOTSWICH (CHANNEL): CONNECT A LATCH SWITCH
THAT CONTROLS CHANNEL SWITCHING.
・ FOOTSWITCH (FX LOOP): CONNECT THE LATCH SWITCH
TO TURN ON/OFF THE EFFECT LOOP.
・ FOOTSWITCH (DELAY): CONNECT THE LATCH SWITCH TO
TURN ON/OFF THE DELAY EFFECT with A MONO CABLE.
・ DC IN: Connect a dedicated adapter.
Specs
・ Output: 30W/16Ω, 66W/8Ω, 100W/4Ω
・ Each channel has independent tone stack
・ Tape echo style delay that can be preset for each
channel
・ Delay e ect: ON/OFF support by foot switch, up to
600ms
・ Size: 26.5 (W) x 9.5 (D) x 8.5 (H) cm (not including
protrusions)
26.5 (W) x 11.8 (D) x 10.3 (H) cm (when the handle is
folded)
・ Weight: 1.76kg