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Instrument Amplifier
V 1.0
Operations Manual
For Lucky 7 (head/combo)
Fuchs Audio Technology
407 Getty Ave, Clifton, NJ 07015
(973) 772-4420 (fax) 973-772-4460
Website: www.fuchsaudiotechnology.com
Email:
info@fuchsaudiotechnology.com
2000-2005 Fuchs Audio Technology. All rights reserved.
L7m 3/2005
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Summary of Contents for Fuchs Audio Technology Lucky Seven
- Page 1 Instrument Amplifier V 1.0 Operations Manual For Lucky 7 (head/combo) Fuchs Audio Technology 407 Getty Ave, Clifton, NJ 07015 (973) 772-4420 (fax) 973-772-4460 Website: www.fuchsaudiotechnology.com Email: info@fuchsaudiotechnology.com 2000-2005 Fuchs Audio Technology. All rights reserved. L7m 3/2005...
- Page 2 Sincerely, Andy Fuchs President Fuchs Audio Technology Fuchs Audio Technology 407 Getty Ave, Clifton, NJ 07015 (973) 772-4420 (fax) 973-772-4460 Website: www.fuchsaudiotechnology.com Email: info@fuchsaudiotechnology.com (“Fuchs Audio Technology” & “Overdrive Supreme” are registered trademarks of Fuchs Audio Technology) L7m 3/2005...
- Page 3 Front panel Controls, inputs & their functions Rear Panel controls, inputs/outputs Biasing Lucky 7 power tubes & other technical info. Sample tone setting diagrams & notes Warranty/repair information & mail-in warranty form 2000-2005 Fuchs Audio Technology. All rights reserved. L7m 3/2005...
- Page 4 Amplifier ™ Representing a new direction for Fuchs Audio Technology, the Lucky 7™ brings the high build quality and awesome tones people expect of Fuchs products, to a new more affordable price range. The Lucky 7™ is based on a dual 12AX7 preamp stage and a unique single ended 7-watt EL-34 fixed bias output stage. By switching to a 6V6, you can reduce power to less than 5-watts.
- Page 5 Please read before powering up your Lucky 7. Please see Panel Diagrams in next 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 both 4 &...
- Page 6 Diagrams of FRONT & REAR Panels, Tube Bias Diagram Front Panel Rear Panel 4-Ohm 8-Ohm Tube Bias diagram Power Tube Bias Pot L7m 3/2005...
- Page 7 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 pedals/effects without any loss in performance. Pedals/effects input is also inserted to this input in series with your guitar.
- Page 8 REAR Panel Controls, inputs/outputs 4-Ohm 8-Ohm AC power cord input: Using the supplied 120vac power cord. Connect to AC POWER IN on the amplifier and to AC power source. AC power Fuse: This fuse protects the amplifier if any malfunction occurs. Use ONLY stock fuse rating as supplied by factory.
- Page 9 Biasing Lucky 7 power tubes & other technical info High Internal voltages inside this amplifier can cause harm or Death! The Lucky 7 (PCB) circuit board is shown below with the chassis sitting on its transformers, and front panel facing you. There are exposed high-voltages in this chassis, even with the amplifier shut-off! If you are not familiar with tube amplifiers and/or high voltages, do not attempt to remove the chassis from its cabinet or to attempt to service this amplifier.
- Page 10 Sample Setting Diagrams & Notes (make copies & use!) GAIN HIGH NOTES: NOTES: GAIN HIGH NOTES:...
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Page 11: Warranty Information
Fuchs Audio Technology within 30 days of purchase, or your warranty will not be in effect. Fuchs Audio Technology reserves the right to suspend or terminate the above warranty at our sole discretion, should damage from any of the above limitations and or exclusions be detected upon examination. - Page 12 WARRANTY REGISTRATION FORM This completed form must be returned to Fuchs Audio Technology within 30 days of purchase along with a copy of your receipt from your authorized dealer. Please fill in all requested information on this form so we may register you for future warranty repairs or future upgrades, should they become available.