Fuchs Audio Technology Blackjack 21-II Operation Manual Download Page 5

2.

 

Please Read Before Powering Up Your Amplifier! 

 

3Please see Panel Diagrams in Section 3 for assistance. 

 

1)

 

Inspect to make sure power & pre-amp tubes are intact & snuggly seated in their 

sockets. 

 

2)

 

Make certain a speaker (load) is plugged into speaker input jack on the back of 

the amplifier. Failure to have a speaker connected to the amp will result in 

damage to the output tubes! Your amp is supplied with 4,8 and 16 ohm speaker 

output jacks, select the one which matches your speaker(s) impedance. 

 

3)

 

Reduce Front panel GAIN controls to moderate level. 

 

4)

 

Install instrument cable from guitar into front panel INPUT 

 

5)

 

Be sure both POWER switch (front panel) is in DOWN (0ff) position and standby 

is in off (down) position. 

 

6)

 

Install power cord to amplifier (AC POWER IN) and to appropriate AC power 

source. 

 

7)

 

POWER UP amplifier by: 1) flipping POWER switch UP. Allow at least 30 seconds 

to 1 minute for tubes to heat up. Then switch amp to operate mode via standby 

switch. 

 

8)

 

The Amplifier is now fully on and ready to use. Feel free to adjust all controls as 

you see fit. 

 

9)

 

Provide adequate and unimpeded ventilation. 

 

10)

 

Do not expose the unit to drips or splashes. 

 

11)

 

Do not to place liquids on the unit. 

 

12)

 

Properly ground the unit (i.e. make sure the outlet used is grounded, and ground 

is not defeated between the outlet and unit). 

Summary of Contents for Blackjack 21-II

Page 1: ...se 50 and Wild Card 100 head combo Fuchs Audio Technology 407 Getty Ave Clifton NJ 07011 USA 973 772 4420 fax 973 772 4460 Website www fuchsaudiotechnology com Email info fuchsaudiotechnology com 2000...

Page 2: ...dous musicality of this new series Please read this manual carefully Although these amps were created to be simple amplifiers to operate they will perform to fullest by your full understanding of thec...

Page 3: ...powering up your amp 3 Diagrams FRONT REAR panels Tube bias diagram 4 Front Panel Controls Inputs Functions 5 Rear Panel Controls Inputs Outputs 6 Technical Information Service Information Tube Biasi...

Page 4: ...cord is standard And through Fuchs single point grounding the amp is quiet and free of hum at all operating levels A single instrument input and 3 speaker outputs for 4 8 16 ohms are provided An effec...

Page 5: ...l instrument cable from guitar into front panel INPUT 5 Be sure both POWER switch front panel is in DOWN 0ff position and standby is in off down position 6 Install power cord to amplifier AC POWER IN...

Page 6: ...3 DIAGRAMS OF FRONT REAR PANELS TUBE BIAS DIAGRAM Front Panel Rear Panel Tube Bias Diagram...

Page 7: ...AT7 Phase inverter driver tube 4 FRONT PANEL CONTROLS INPUTS THEIR FUNCTIONS Input Jack Input jack is a 1 4 phone plug designed for 1 Meg impedance guitar level signal This input will readily accept p...

Page 8: ...the amount of reverb return to the amp Reverb Decay The Reverb decay adjusts the time it takes for the reverb signal to decay Counterclockwise is the shortest decay and turning all the way clockwise...

Page 9: ...being used but being warmed up place amp into standby mode Effects Loop Patch jack This is a stereo The tip is the return to the power amp The ring is the send from the preamp This may be used with an...

Page 10: ...ponsibility for nor shall they be held liable for any harm of any kind to any person s or property including damage to this amplifier as a result of improper and or unauthorized service repair or inte...

Page 11: ...h a polarized plug one blade wider than the other This is a safety feature If you are unable to insert the plug into the outlet contact an electrician to replace your obsolete outlet Do not defeat the...

Page 12: ...ervicing to qualified personnel only Fuchs amplifiers and loudspeaker systems are capable of producing very high sound pressure levels which may cause temporary or permanent hearing damage Use care wh...

Page 13: ...the original purchaser This excludes tubes which are covered for 90 days by Fuchs and whatever period the manufacturer of the tube provides This does not apply to Fuchs amplifiers that have been tampe...

Page 14: ...his form so we may register you for future warranty repairs or future upgrades should they become available Purchasers Name Address City State Zip Country Phone Number E Mail address Model Serial Numb...

Page 15: ...72 4420 fax 973 772 4460 Website www fuchsaudiotechnology comEmail info fuchsaudiotechnology com All Fuchs Products are Distributed in the EU through Audiowerk Distribution andLogistics AUDIOWERK e Kf...

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