Orange OB1-300, OB1-500 User Manual

OB1 SERIES USER MANUAL

OB1 SERIES

BASS GUITAR AMPLIFIER

USER MANUAL

V1.0

OB1 SERIES USER MANUAL

INTRODUCTION

THE OB1 SERIES

PRODUCT REGISTRATION

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, Orange began designing and manufacturing products which quickly established a reputation
for their innovation, superior quality and distinctive sound. We have been a pioneering force in the guitar
amplification industry ever since, and today, with a team of the world’s finest amplifier engineers we
continue to push back the boundaries of conventional amplifier 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.

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!

For years bassists have combined guitar and bass amps to remarkable effect, adding harmonics and layers
of overdrive from a guitar amp to their core bass tone in pursuit of the ultimate live sound. Taking our
inspiration from this ‘bi-amping’ trend, the OB1 Series takes care of this and more besides, with its unique
Blend and Gain circuit. The result is a ‘bi-amped’ sound, without the hassle of taking two rigs to the show.

The OB1 splits the input signal two completely separate paths. One side amplifies the clean signal, whilst
the other adds up to two stages of controllable gain to the upper register. These two elements can then be
combined using the Blend control. The low end remains warm and punchy, whilst the overall tone is
enhanced with additional harmonic content from the Gain circuit. Dial in anything from everything from
fat cleans to heavy grind, and everywhere in between.

Register your purchase online for a free extension to the standard manufacturer’s warranty. 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

V1.0

OB1 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 product complies with the essential requirements of the EMC Directive, Low Voltage

Directive and Restriction of Hazardous Substances (RoHS2) Directive. This product conforms to
UL 60065 Standard for Safety for Audio, Video and Similar Electronic Apparatus – Safety
Requirements (7th Edition, Dated June 30, 2003 with revisions through July 24, 2013) and is

certified to CAN/CSA-C22.2 No. 60065-03, Amendment 1: 2006, Amendment 2: 2012.

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. Please contact your local authority for details of your nearest
approved recycling facility.

V1.0