Olsson Blues Fifteen User manual

Blues Fifteen
Owners Manual
Olsson Amplifiers 2012 – www.olssonamps.se

Important Safety Instructions
This symbol warns the user of dangerous voltage levels localized within the enclosure.
This symbol advises the user to read all accompanying literature for safe operation of the unit.
Read this manual carefully before switching on your amplifier. Heed all warnings.
Only connect the power supply cord to an earth grounded AC receptacle in accordance with the voltage
and frequency ratings listed under VOLTAGE on the rear panel of this product.
Vacuum tube amplifiers generate heat. Maintain at least 25 cm of unobstructed air space behind the
unit to allow for proper ventilation and cooling of the unit. Keep away from curtains or any flammable
objects.
WARNING: To prevent damage, fire or shock hazard, do not expose this unit to rain or moisture.
Unplug the power supply cord before cleaning the unit exterior (use a damp cloth only). Wait until the
unit is completely dry before reconnecting to power.
Never touch a hot vacuum tube.
This product should be located away from heat sources such as radiators, heat registers, or other
products that produce heat.
Protect the power supply cord from being pinched or abraded.
Never operate the amplifier without a connected speaker or load since this can cause severe damage
to the amplifier.
The power supply cord of this product should be unplugged from the outlet when left unused for a long
period of time, or during electrical storms.
This product should be serviced by qualified service personnel when: the power supply cord or the plug
has been damaged; or objects have fallen; or liquid has been spilled onto the product; or the product
has been exposed to rain; or the product does not appear to operate normally or exhibits a marked
change in performance; or the product has been dropped, or the enclosure damaged.
Do not drip or splash liquids, nor place liquid filled containers on the unit.
CAUTION: No user serviceable parts inside, refer servicing to qualified personnel only.
Olsson amplifier and loudspeaker systems are capable of producing very high sound pressure levels
which may cause temporary or permanent hearing damage. Use care when setting and adjusting
volume levels during use.

SVENSKA
Viktiga säkerhetsinstruktioner
Den här symbolen varnar användaren för farliga spänningar inuti apparaten.
Den här symbolen uppmanar användaren att läsa all säkerhetsinformation som levererats
med apparaten.
Läs denna handbok noggrant innan du slår på förstärkaren. Följ alla varningsanvisningar.
Apparaten måste anslutas till jordat nätuttag med den spänning och frekvens som anges vid VOLTAGE
på baksidan av produkten.
Rörförstärkare avger värme. Se till att det finns minst 25 cm fritt utrymme bakom förstärkaren, detta
för att säkerställa en ordentlig ventilation och kylning av enheten. Håll apparaten borta från gardiner
och annat brandfarligt material.
VARNING: För att undvika skada, eldsvåda eller elektrisk chock, utsätt inte apparaten för regn eller
fukt.
Dra ur nätsladden från vägguttaget innan du rengör utsidan av apparaten (använd endast en fuktig
trasa). Vänta sedan till apparaten torkat helt innan du ansluter nätsladden igen.
Ta aldrig på ett varmt elektronrör.
Produkten skall hållas på ordentligt avstånd från värmekällor såsom radiatorer, varmluftsutblås eller
andra apparater som alstrar värme.
Skydda nätsladden från att bli klämd eller skadad.
Använd aldrig förstärkaren utan ansluten högtalare eller motsvarande last då detta kan orsaka
allvarlig skada på förstärkaren.
Nätsladden skall dras ur nätuttaget när förstärkaren inte kommer att användas under en lång tid eller
vid åskväder.
Denna produkt skall ses över av kvalificerad servicepersonal när: nätsladden eller nätkontakten har
skadats; eller om föremål har ramlat over den; eller om vätska har spillts över produkten; eller om
produkten utsatts för regn; eller om produkten inte verkar fungera normalt eller att prestandan skiljer
sig från det normala; eller om produkten tappats eller om höljet skadats.
Droppa eller stänk inte vätska på apparaten. Ställ heller inga föremål som innehåller vatten på den.
VARSAMHET: Inga delar inuti apparaten kan repareras av användaren, anlita kvalificerad
servicepersonal.
Förstärkare och högtalarsystem från Olsson Amps kan producera höga ljudnivåer som kan orsaka
temporära eller permanenta hörselskador. Var försiktig vid inställning och justering av ljudvolymen.

Blues Fifteen Amp
The Blues Fifteen is an all-tube hand-wired amp built to meet all modern requirements with the
sound of old school amps. It’s an awesome tone machine with a warm and rich tone. The lower
settings of the volume control result in harmonically rich, clean tones, perfect for jazz, rock, blues
and country music. When cranked, the amp will inspire you with fat, compressed, wildly distorted
tones. It also records easily thanks to the natural compression. All components used are carefully
selected and of highest quality for best sound experience.
Thank you for buying this amp. We are confident that you will be satisfied with your choice!
Enjoy!
Features include:
Hand-wired all tube circuitry on turret board.
Old school circuit for sweet warm tone produces around 13 Watts.
Two channels with individual volume controls.
Possibility to mix both channels for a wide tonal range.
5Y3GT rectifier helps provide natural compression.
Finger joined solid pine cabinet resonates with a warm tone.
Lacquered tweed covering for excellent finish.

Getting started
1. Connect the amplifier to a grounded A/C outlet in accordance with the voltage and frequency
ratings specified for your amplifier.
2. Make sure that the internal speaker is connected to the leftmost speaker jack. Never operate the
amplifier without a speaker connected. Make sure the impedance matching is correct. This amp
is designed for an 8Ωload.
3. Set the “Power” switch to position ON.
4. Wait for at least 60 seconds to allow the filaments to heat up.
5. Make sure that the volume controls are set to 1.
6. Switch the “Standby” switch to ON.
The amplifier is now ready for use.
Connect your instrument to the INPUT jack.
Rear panel
A. ELECTRIC LINE CORD – Connect to a grounded A/C outlet in accordance with the voltage and
frequency ratings specified for your amplifier.
B. INTERNAL SPEAKER JACK – Plug-in connector for the 8Ωinternal speaker. A speaker must
always be connected to this jack when the amplifier is turned ON. A speaker impedance load of
8Ωshould be used to avoid damage to the amplifier.
C. EXTENSION SPEAKER JACK – Plug-in connector for an external speaker. This jack is wired in
parallel with the internal speaker jack. Use 8Ωminimum total.
Vacuum Tubes
Replace tubes only with the same type and ratings as specified.
Be sure to use matched power tubes (6V6GT).
Tube locations from left to right at rear:
5 6 6 1 1
Y V V 2 2
3 6 6 A A
G G G X Y
T C C 7 7* *For higher gain, substitute a 12AX7 for this preamp tube.
A
B
C

Control panel
D. STANDBY – When the amplifier is on, Standby will mute all audio output from the amplifier.
Use Standby during short breaks to avoid the tube warm up delay.
Select Standby for the first 60 seconds when switching the amplifier ON to extend tube life.
E. MAIN FUSE – Protects the amplifier from electrical faults. Replace fuse with same type and rating
as specified on top panel.
F. POWER SWITCH – Turns the amplifier on-off as indicated by the jewel unit.
G. TONE – Adjusts the tone characteristics of the amplifier for both channels.
H. VOLUME 1 – Adjusts the volume of channel 1. Channel 1 is the brightest channel.
I. VOLUME 2 – Adjusts the volume of channel 2. Channel 2 is a darker channel.
J. CHANNEL SWITCH – Selects input channel. When in position 1+2 both channels are mixed
together and both Volume 1 and Volume 2 are active.
K. INSTRUMENT INPUT – Input jack for your guitar.
Specifications
Type: BF1A
Preamp tubes: 1 x ECC83/12AX7, 1 x 12AY7
Poweramp tubes: 2 x 6V6GT
Rectifier tube: 1 x 5Y3GT
Input impedance: 1MΩ
Output power: 13 Watt into 8Ωat 5% THD , 1kHz
Output impedance: 8Ω
Power requirement: 85 Watt
Speaker: 8Ω, 12”, Jensen®C12Q
Dimensions (W*D*H): 51x27x43 cm
Weight: 14 Kg
Operating temerature: 0-35°C
Product specifications are subject to change without notice .
EUROPE ONLY - NOTE: This equipment has been tested and found to comply with the
requirements of the EMC directive (Environments E1, E2 and E3 EN 55103-1/2) and the Low Voltage
Directive in the E.U
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A PRODUCT OF:
OLSSON AMPS
STOCKHOLM, SWEDEN
2012 - BLUES FIFTEEN, BF1A, OWNERS MANUAL - VERSION 1.0, 00120007