ORANGE MUSIC ELECTRONIC CO. LTD
LONDON, ENGLAND
Est. 1968
USER MANUAL
FOUR STROKE SERIES USER MANUAL
In 1968, Orange founder and CEO Cliff Cooper borrowed £50 to start a musical instrument shop and
recording studio in London’s West End. Against the backdrop of one of the city’s most vibrant districts, the
shop was decorated with psychedelic script and painted a bright shade of orange which gave the company
its name.
Shortly after, we began designing and manufacturing our own products which quickly established a
reputation for their innovation, superior quality and distinctive sound. Orange has been a pioneering force
in the industry ever since, and today, with a team of the world’s finest amplifier engineers, we continue to
push back the boundaries of conventional design. From our very humble beginnings on New Compton
Street, Orange Amplification has grown into an iconic global brand, earning legions of loyal supporters along
the way who continue to make the ‘Voice of the World’ heard. Welcome to the Orange family.
The 4 Stroke Series is our offering to the demanding modern bass player – everything you need, and nothing
you don’t. Featuring all-analogue circuitry throughout, these amps are all about powerful, full-bodied tones
with an organic delivery that has passed by a generation of players confronted with an array of lifeless digital
offerings.
4 Stroke Series amplifiers speak with genuine authority, remaining clean, composed and expressive all the
way up to their extremes, without ever becoming clinical or sterile. With an extensive four band parametric
EQ setup and Class A compression, these are supremely versatile amps, capable of performing in any
situation.
Due to the 4 Stoke’s unique feature set, we urge you to take some time to familiarise yourself with the
contents of this user manual. Deep exploration of the 4 Stroke’s tone controls will help you gain a
comprehensive understanding of how they affect the overall sound. Remember: cutting frequencies you
don’t want to hear is often just as effective as boosting those you do. However, there are of course no rules.
Training your ears through experimentation will ultimately allow you to unlock the full potential of these
remarkable amplifiers.
We are confident that you will be delighted with your new purchase and that it will provide you with many
years of enjoyment. Congratulations, you are now a member of the Legendary British Guitar Amplifier
Owners Club!
In the interests of continued product development and improvement, the contents of the manual may be subject to change
without notice. Ensure you are viewing the latest version at: www.orangeamps.com
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FOUR STROKE SERIES USER MANUAL
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarised or grounding-type plug. A polarised plug has two
blades with one wider than the other. A grounding type plug has two blades and a third grounding
prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit
into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid
injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the
user to the presence of un-insulated ‘dangerous voltage’ within the product’s enclosure that may
be of sufficient magnitude to constitute a risk of electric shock to persons. Terminals labelled as
“Speaker Outputs” must be connected to a speaker cabinet of the designated load rating using
an un-shielded two conductor cable for speaker use at all times during operation.
The exclamation point within an equilateral triangle and "WARNING" are intended to alert the
user to the presence of important operating instructions. Failure to heed the instructions will
result in severe injury or death.
This Orange product complies with the WEEE Directive (2002/96/EC) marking requirement. This
affixed product label indicates that you must not discard this electrical/electronic equipment in
domestic household waste in the European Union. Other territories may differ. Contact your local
authority for details of your nearest approved recycling facility.
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