ORANGE OV4 Manuale utente
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THANK YOU!
Thank you for choosing Orange. Since 1968 when the
company was founded, Orange has been a pioneering force in
the guitar amplification industry. Today, with a team of the
world’s finest amplifier engineers, orange continues to push
back the boundaries of conventional tube amplifier design.
Our commitment to craftsmanship and quality control has
allowed our amplifiers to stand the test of time, giving their
owners as much pleasure now, as the day they were bought.
To maintain this level of excellence, each orange amplifier is put through many rigorous test
procedures before leaving the factory.
The warmth, tonal quality and rich harmonics generated by a valve amplifier cannot be reproduced
by ‘artificial’ means. Many guitarists have reached the same conclusion: neither the transistor nor
microchip is a suitable alternative to valve technology.
This booklet contains valuable technical and safety information please take the time to read this
manual as the information may enhance the sound and performance of your amplifier. We are
confident that you will be delighted with your new purchase and that it will provide you with many
years of enjoyment.
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CONTENTS
THANK YOU!............................................................................................................................................2
CONTENTS............................................................................................................................................... 3
CONTACT DETAILS...................................................................................................................................4
IMPORTANT SAFETY INFORMATION....................................................................................................... 5
PANEL FEATURES & FUNCTIONS........................................................................................................... 10
OV4 QUICK REFERENCE GUIDE .............................................................................................................12
DIVO OV4 OPERATION ..........................................................................................................................13
DIVO OV4 Operation ... Continued .......................................................................................................15
FOOTSWITCH CABLE .............................................................................................................................18
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CONTACT DETAILS
Orange Amplifiers
OMEC House
108 Ripon Way
Borehamwood
Hertfordshire
WD6 2JA
ENGLAND
Tel: +44 20 8905 2828
Fax: +44 20 8905 2868
Orange USA
2065 Peachtree Industrial Ct.
Suite 208
Atlanta, GA 30341
USA
Tel: 1-404-303-8196
Fax: 1-404-303-7176
info@orangeusa.com
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IMPORTANT SAFETY INFORMATION
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.
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.
Read these instructions, keep these instructions. Heed all warnings, follow these instructions.
WARNING: Amplifiers and components inside them contain potentially fatal high voltages. Voltages
are present when the amplifier is turned on and also for some time after the amplifier has been
turned off. You can still get an electric shock when an amplifier is turned off and disconnected from
the power.
All installations and product adjustment / removals must be performed by an Orange Amplifier
approved fitting centre.
Disclaimer: Orange Amplifiers, its suppliers and subsidiaries accept no liability for any damage(s),
injury(s) or death incurred from or while installing or using this product.
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It is the responsibility of the authorised installer to perform the installation strictly in accordance
with the installation guidelines. The installer will take full responsibility for the installation. Orange
Amplifiers will only accept liability for their own branded product. For the avoidance of doubt, not
the customer’s amplifier or installation work undertaken.
Do not open the equipment case. There are no user serviceable parts in this product. Refer all
servicing to qualified service personnel. Unauthorised modification of this equipment is strictly
forbidden.
If the product does not operate normally when the operating instructions are followed, then refer
the product to a qualified service engineer.
All electrical and electronic products should be disposed of separately from the municipal waste
stream via designated collection facilities appointed by the government or local authorities.
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DIVO OV4 GENERAL OVERVIEW
The OV4 product is designed to be retrofitted into fixed bias100w/50w guitar valve amplifiers to
improve the reliability and performance. For the safety reasons mentioned and to ensure correct
installation and configuration within your amp, the OV4 must be installed by qualified personnel via
an authorised dealer.
Key Features
Automatically biases output valves and continually adjusts bias to ensure the full potential of
each valve within the amp is realised. Once fitted, power valve bias is automatic.
Valves can be exchanged ‘plug and play’ fashion.
Negates the need to purchase valves matched pairs / quads.
Can be used with different combinations of power valves to create different tones, using
EL34s, 6L6s KT88s, etc...
Improves the longevity of the amp valves by an estimated 40%
Timed initial start-up sequence, to prevent cathode stripping of the valves
Valves can drop to a low bias level if no audio is detected.
Half power input (via a separate footswitch) to turn a 100W head into a 50W head.
User definable switching between power valves during half power operation.
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‘Share the wear’ feature. Alternates between valves when the half power switch is used, to
share the wear between output power valves.
Optional selectable switch between custom bias levels i.e. ‘standard’ and ‘custom’.
Visual indication to display when a valve has gone faulty so only the faulty valve needs to be
replaced.
Visual fault indication via an optional footswitch to display when a valve is faulty or what
pair of valves is selected during half power operation.
Dynamic valve fault detection.
Switches out faulty valves and runs the amp at half power until the defective valve can be
changed (100w amp)
Can help prevent the amp from catastrophic damage, by isolating the faulty valve, thus,
saving the end user money in expensive repair bills.
Automatically compensates for variation in various mains supplies.
If progressive standby is used the amp power consumption is reduced by an average of 30%
Custom configuration when taken to an approved service point.
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SYSTEM BLOCK DIAGRAM AND FUNCTIONS
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PANEL FEATURES & FUNCTIONS
NAME
DESCRIPTION
1
Valve Power Connector
12 way power connector used for connecting the OV4 module to the
power valves.
2
Bias Setting
Selects the bias of the amplifier. There are two modes, ’custom’ and
‘standard’. In standard mode the bias level of the amplifier is set to
35mA. The custom bias setting can be configured by authorised
personnel. The default factory settings for this mode are: 35mA, if the
OV4 does not detect an audio signal, after 2 minutes the bias level
drops to 20mA to preserve the life of the valves. As soon as audio is
detected the bias level instantaneously reverts back to 35mA.
3
Share The Wear
ON: Valves alternate between pairs when in half power mode.
OFF : Valves 2 & 3 are always selected when in half power.
This feature can be used to ‘share the wear’ between
valves during half power operation or used to toggle or
select a particular pair of valves during half power operation.
4
Earth
Earth connection point from the OV4 case to the amplifier earth.
(usually the chassis)
Indice
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