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Olsson BJF100, Owner'S Manual

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Olsson BJF100 Owner'S Manual Download Page 7

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14. PRESENCE 1 AND PRESENCE 2

Adjusts the highs and upper mids in the 

power amp section. This amp has separate 

presence controls for each channel.

15. MUTE

When the switch is in mute position the amp 

will be quiet and you can change the guitar 

without any disturbing noise or hum.

16. POWER

Mains power on/off switch. Make sure that 

there is a speaker load connected to the 

amp before turning on.

17. POWER INDICATOR LAMP

Shows that the amp is turned on.

18. LED INDICATOR CHANNEL 2

When Channel 2 (clean/crunch) is selected, 

this LED has two states. GREEN indicates  

clean mode and ORANGE crunch mode.

19. LED INDICATOR CHANNEL 1

When this LED is RED, channel 1 (overdrive) 

is selected.

 NOTES:

Summary of Contents for BJF100

Page 1: ...BJF100 HEAD OWNER S MANUAL 1 0 ...

Page 2: ...at Unplug the power supply cord before cleaning the unit exterior use a damp cloth only Wait until the unit is complete ly dry before reconnecting to power This product should be operated only from the type of power source indicated on the rating label If you are not sure of the type of power available consult your product dealer or local power company Only connect the power supply cord to an eart...

Page 3: ...e The product may fall causing serious injury to a child or adult and serious damage to the product Use only with a cart stand tripod bracket or table recommended by the manufacturer or sold with the product Use only accessories recommended by the manufacturer Vacuum tube amplifiers generate heat Maintain at least 20 cm 8 of unobstruct ed air space behind the unit and at least 50 cm 20 immediately...

Page 4: ...ally Typically this is a function produced in the power amp section but here we have successfully moved that function into the preamp instead Believe it or not but this 100W amp will sound great also at bedroom volumes Just turn the volume controls down and the sound will stay the same Also note that the clean and the overdrive channel has no components in common resulting in two optimized channel...

Page 5: ...0V 250V T2A Main fuse 230 240V 250V T2A HT fuse 250V T630mA Heater fuse power amp 250V T8A Heater fuse pre amp 250V T4A Control voltage fuse 250V T500mA Max output power 100W in 4 8 or 16Ω Input impedance 1MΩ FX loop Serial with send and return level adjustments Power tubes 4 EL34 Power amp Fixed biased Needs BIAS adjustment when changing power tubes Pre amplifier tubes 4 12AX7 Dimensions 640 x 28...

Page 6: ...nnel when foot switch is not connected When using the foot switch this should be set to 2 8 GAIN This adds gain distortion to your sound At higher settings the compression and the amount of overtones will increase 9 VOLUME This is the volume for the clean crunch channel If you like to make it a bit easier to adjust the volume at very low levels activate the FX Loop without anything connected and d...

Page 7: ...change the guitar without any disturbing noise or hum 16 POWER Mains power on off switch Make sure that there is a speaker load connected to the amp before turning on 17 POWER INDICATOR LAMP Shows that the amp is turned on 18 LED INDICATOR CHANNEL 2 When Channel 2 clean crunch is selected this LED has two states GREEN indicates clean mode and ORANGE crunch mode 19 LED INDICATOR CHANNEL 1 When this...

Page 8: ...hanging be tween bypass and active you can now switch between the two levels 21 SEND LEVEL Controls the send level to external devices Start setting it to 3 o clock If the connect ed effect starts to distort more than usual decrease the send level 22 SEND JACK Connect your external FX gear input to the SEND jack 23 FX LOOP SWITCH Turns the FX loop on an off When off the loop is completely bypassed...

Page 9: ...ear panel Connect the speaker s to the jack s and set the IMPEDANCE SWITCH as follows 1x16 ohm Set the IMPEDANCE SWITCH to 16 ohm 1x8 ohm 2x16 ohm Set the IMPEDANCE SWITCH to 8 ohm 1x4 ohm 2x8 ohm Set the IMPEDANCE SWITCH to 4 ohm Warning Never use the amp without any speaker load 29 SPEAKER IMPEDANCE SWITCH Set it to match the connected loudspeak er s as described in paragraph 28 NOTES ...

Page 10: ...NOTES ...

Page 11: ...NOTES ...

Page 12: ...Olsson Amplification Terrängvägen 17 129 48 Hägersten Sweden www olssonamps com ...

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