VIEW THE 'ORANGE WALL' BACKLINES AT THE READING & LEEDS FESTIVAL 2010... YOU ME AT SIX ... LOSTPROPHETS.... & BIFFY CLYRO ONSTAGE..

Click on the link below to see YOU ME AT SIX's stunning ORANGE backline at the READING 2010 FESTIVAL, consisting of SIXTEEN 4...

VIEW THE FIRST OF FIVE 'ORANGE FAMILY' VIDEOS - DOUG DOPPLER DEMONSTRATES ORANGE AMPS FULL PRODUCT LINE..

ORANGE AMPS - FULL PRODUCT LINE is the first in a series of five videos that showcase the various families of ORANGE amps, in...

SIGN UP FOR THE 'ORANGE AMPS EMAIL NEWSLETTER' TO ENTER PRIZE DRAWS & GET THE LATEST REVIEWS & ARTISTS' INFO...

Sign up for our email newsletter to enter competitions where you could win an ORANGE amp... plus, you'll get links to the lat...

KERRANG! AWARDS 2010.. ANOTHER YEAR OF MASSIVE SUCCESS FOR ORANGE BANDS!!

ORANGE are proud to announce that this year's KERRANG! AWARDS (held in London on July 29th) are again dominated by ORANGE end...

!! IMPORTANT NOTICE !! REWARD OFFERED FOR INFORMATION LEADING TO THE RECOVERY OF STOLEN ORANGE AMPLIFIERS & SPEAKERS

The Orange amplifiers and speaker cabs listed below recently went missing in transit in the UK to customers. These items are ...

ORANGE GOES TO THE BIG FESTIVALS !! SEE VIDEOS FROM SXSW 2010 IN TEXAS.................. &....... 2010 HARVEST OF HOPE IN FLORIDA.

ORANGE's ALEX AUXIER heads to SxSW 2010 (South by South West) in Austin, Texas, to spend some time at this massive annual eve...

HEAR TOTAL GUITAR MAGAZINE'S AUDIO CLIP OF THE TINY TERROR HARD WIRED EDITION..

Check out the TINY TERROR HARD WIRED EDITION's warm tones and classic ORANGE crunch in the TOTAL GUITAR audio review. The fu...

TERROR BASS 500 & SMART POWER CABS..... READ THE 'BASS PLAYER' REVIEW..

APRIL 2010 ISSUE: "The TERROR BASS and SP cabs make for a fantastic rock rig. Not only do they expand preconceived notions a...

VIEW PREMIER GUITAR's NAMM 2010 / ORANGE BOOTH VIDEO............. ORANGE's DAVE VAN EPP demos the RV50 MKII & THUNDER 30 HEADS !!

DAVE VAN EPP at the ORANGE booth NAMM 2010, demos the ROCKERVERB 50 MKII and THUNDER 30, and ORANGE's ADRIAN EMSLEY tells you...

MUSICRADAR.COM/GUITAR WORLD VIDEO - THE NEW ROCKERVERB MKII HEAD & COMBO - MORE INFO & LIVE DEMONSTRATION

ORANGE'S ALEX AUXIER tells you more about the new ROCKERVERB MKII head and ADRIAN EMSLEY demonstrates the ROCKERVERB MKII 1x1...
View all archived features - here...
FAQs
FAQ Categories & Topics
FAQ Categories | Selected FAQ
General
Technical
Vintage Orange Amplifiers
Troubleshooting

I need to replace my tubes/valves - does my amp have to be biased?

In the U.K. vacuum tubes are referred to as valves.

When replacing tubes always use quality branded replacements. If unsure which brand to buy, check the Orange forum. There are many Orange owners experimenting with different brands and this is a great place to seek advice! Visit the Forum to discuss amplifiers with other Orange users.

WARNING! Tubes get HOT! Make sure that you leave your amplifier off for a sufficient period of time to allow the tubes to cool.

Preamp tubes may be replaced at any time by the owner. Allow the amp to cool down and remove the metal tube shields by pushing them in and turning them counter-clockwise. Pull out the old tube and insert the new one taking care to correctly line up the pins with the tube socket. Replace the tube shields. Orange recommends that you replace your preamp tubes once every 18 months, however you will not cause your amplifier any harm by using them longer. Replacing them regularly helps reduce the risk of a tube failing at an inopportune time!

When buying power tubes ask for matched pairs or quartets. This means that each tube has been tested and chosen to work well together. Allow the amp to cool down and take care to correctly line up the pins of the tube with the tube socket. Orange recommends that you replace your power tubes once every 12 months, however you will not cause your amplifier any harm by using them longer.

Power tubes in the Tiny Terror, Rocker 30, AD5, AD15, and AD30 series of amplifiers do not need to be biased. Power tubes in all other Orange amplifiers should be biased by a qualified amp technician when they are replaced. Failure to bias power tubes can result in shortened tube life and damage to your amplifier. Improperly biased tubes can also affect your amplifiers tone.