Posts Tagged ‘Bias Engine’

Orange Amplification Announces DIVO VT1000 Valve Tester

Thursday, January 31st, 2013

Orange Amplification has released the DIVO  VT1000 Valve Tester, an automatic valve tester that performs a host of diagnostics on both preamp and power amp tubes. The unit has one octal and two nine pin valve sockets to fit pe-amp and EL34 valves. Once inserted, the user presses the start button and the tests are run.

Vt1000 valve tester

VT1000 Details:

Tests run:

  • Heater filament test: Short circuit
  • Heater filament test: Open circuit
  • Heater filament test: Tolerance check
  • Heater cathode insulation: Leakage
  • Heater cathode insulation: Short Circuit
  • Tests for heater current abnormalities
  • Amplification factor
  • Voltage gain
  • Power gain
  • Screen grid test
  • Mutual conductance test
  • Dual test for double triodes
  • Emission
  • Inter electrode leakage
  • Inter electrode short circuit
  • Flash-over (arc detection, high voltage breakdown)
  • Gas ionisation test

Compatible Valves:

  • EL34/6CA7
  • EL34L
  • 6L6
  • 6V6/6v6GTA
  • KT66
  • KT77
  • KT88
  • 6550
  • 5881
  • EL84/6BQ5
  • ECC81/12AT7
  • ECC82/12AU7
  • ECC83/12AX7
  • ECC99
  • 12BH7

Orange TubeSync DIVO OV4

Friday, July 13th, 2012

Engine management for your valve amp? It’s here and it works brilliantly

Nick Guppy (Guitarist).

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Bias, and how to set it, is probably one of the most contentious issues for many valve amp users, especially those who like to tweak their amp by installing different makes or types of output valve.

Put simply, bias is your valve’s idle adjustment – it’s like making sure your car is ticking over properly. In fixed bias amplifiers, this is achieved by applying a negative voltage to the valve’s control grid – literally a grid of wire that sits between the cathode and plate.

“Once set, the OV4 continually micro-adjusts the bias current for each individual valve, keeping the amp running at peak efficiency.”

When you switch your amp on, electrons are generated at the cathode and pulled towards the plate, causing current to flow. This happens because electrons are negatively charged particles and the plate is energised with a strong positive voltage – opposite poles attract.

Varying the control grid’s negative voltage means this flow of electrons can be slowed to a trickle, or even stopped – like poles repel.

Although people often refer to the negative bias voltage setting, it’s the actual idle current that is important. All valves have an ideal idle current, typically around 30-50 milliamps, and for the amp to operate at its best it’s important that all your output valves are idling equally.

Click here to find out more!

This is done by fitting valves that have been matched in pairs or quartets, however even the best matching doesn’t mean that valves will wear equally, so in order to keep your amp operating at its best, an occasional small adjustment to the bias is sometimes necessary.

Usually these adjustments are at best a compromise; as individual output valves rarely draw the same idle current. What if there was a device that could measure and automatically adjust the bias for each individual valve? Well now there is: the Orange/TubeSync DIVO, which stands for Dynamic Intelligent Valve Optimisation.

It’s been available in OEM format for some time, however retrofitting this to an existing amp isn’t easy and is definitely beyond most guitarists’ capabilities. What was needed was a simple, bolt-on accessory that can be added to any fixed bias amp, and that’s what Orange has now come up with, in the shape of the DIVO OV4.

Built into an aluminium case about the size of a small paperback, the OV4 module comes with both a bracket and strong industrial Velcro fixings. Four piggyback octal sockets, or interceptors as Orange calls them, are connected to a strong nylon multi-pin plug that is located at one end of the module.

There are two small push-button switches, one offering a choice of standard and custom bias settings, while the other is called ‘share the wear’. At the other end of the module there’s an earth connection, together with an RJ45 socket and a standard 6mm jack socket.

The RJ45 socket is where the DIVO OV4’s interface module plugs in, allowing the product to be configured and interrogated from a PC using a small Windows-compatible program. This handy software lets authorised resellers/installers configure the custom bias switch setting, either globally or for each valve individually, as well as a second ‘idle only’ bias current that operates as a progressive standby feature.

Once set, the OV4 continually micro-adjusts the bias current for each individual valve, keeping the amp running at peak efficiency. It also means that you can run any combination of standard octal power valve you like, although pairs, such as 6L6s and EL34s are more useful.

With no audio present, the OV4 can automatically drop the bias current to a lower setting to reduce wear and tear, instantly returning to its higher level when audio is detected.

In the event of a valve fault, a clever algorithm shuts off the affected pair automatically and remembers which valves are at fault, displaying them on warning LEDs, as well as in the software, while also keeping a record of how many hours use the amp has had, both with and without audio.

The jack socket connects to a standard footswitch letting you switch the amp from full power (all four valves on) to half power, moreover the ‘share the wear’ function remembers which pair of valves were switched off the last time and alternates them, keeping wear as even as possible, although if you use two different pairs of valves, such as 6L6s and EL34s, you can use this as a tone option, swapping from one pair to the other. Cool or what?

In Use

Click here to find out more!

Installing the OV4 on an unmolested 1970s Marshall 100-watt Super Lead head, we deliberately plug in an assortment of unmatched power valves – an EL34, a 6V6, a 6L6 and a 6550.

Setting the custom bias measurements for each valve in the DIVO’s software, we use a special piggyback test socket connected to a multimeter to verify the DIVO does actually do what it says on the can – needless to say, it does.

We then install an old set of EL34s and compare these results with a brand new matched quartet of Groove Tubes – the OV4 automatically senses the difference, easily dealing with big variations across the old valves and smaller ones on the new set.

Sonically, the OV4 noticeably tightens up the Super Lead’s midrange focus and attack while also slightly reducing mains hum, indicating that the magic DIVO box is actually making a positive improvement to the amp’s performance.

For owners of most fixed bias four-valve amps, DIVO offers a reliable and simple means of ensuring peak operation at all times; it works efficiently and transparently and should extend the working life of valves way beyond the point when most people would start thinking about replacement.

There was a time when all cars used a mechanical device called a carburettor to spray fuel into the engine – mechanics had to adjust them by hand, using a plethora of vacuum gauges, stethoscopes and experience to get the best results.

Today, this dark art has been replaced by the convenience and reliability of electronic fuel injection and engine management – if your mechanic wants to know what’s happening inside your engine he doesn’t make intelligent guesses any more, he plugs in a laptop instead and the car tells him what’s wrong.

The DIVO OV4 is really like engine management for your valve amp. It’s ready-fitted to the Orange Rockerverb 100, meanwhile this retrofit version is quick and easy for authorised installers to fit to almost any four-valve design.

As there’s presently no competition, it’s difficult to make comparisons, but we think the price is pitched just about right. Those who like to tweak things may be frustrated that the PC interface and diagnostic software isn’t available to the general public, however there is the possibility of damaging your amp if it isn’t configured properly, so this is an entirely sensible decision.

DIVO works perfectly and does an excellent job of keeping even the most wayward valves on the straight and narrow. If you want to get the absolute best out of your amp and improve its reliability, DIVO is almost an essential – it’s a real innovation.

Verdict

A brilliant idea from the UK that could be the way of the future for valve amp design.

TubeSync Fitted To A Mesa Boogie F-50

Thursday, June 9th, 2011

Sensational blues guitarist Mitch Laddie has been out touring with the product fitted to his Mesa/Boogie F-50, which he said sounds “incredible”. “I had totally fallen out of love with this particular amp before Tubesync was fitted but the difference in sound is more than substantial.The response and tone have been improved ten-fold. Very tight, very fat and all round punchier, especially in the low to mid frequencies.”

Mitch & His Mesa F50“I believe the product is very interesting and definitely nothing like anything I’ve seen or used before. The main advantages of the product are that not only does it give you a valve maintenance feature by displaying a light if a fault is found within a valve, but it manages your valves to run at an equal number of milliamps. This means that each valve is working at an equal rate which in theory gives you optimum amp performance.

F50

Above : TubeSync fitted to a Mesa Boogie F-50

Orange Amps DIVO TubeSync and OV4 Explained

Thursday, April 21st, 2011

Orange Amps presents DIVO with TubeSync technology. DIVO helps increase the life of your tubes, protects against unexpected tube failure, and even allows for (4) different tube types to be installed in the same amp.

DIVO will come pre-installed on select Orange Rockerverb 100 MKII heads beginning Summer 2011. The OV4 stand-alone unit, also available in 2011, can be installed on almost any amp that has (4) power tube slots.

ov4_tubesync

TubeSync DIVO A Brilliant Idea From The UK That Could Be The Way Of The Future For Valve Amp Design

Friday, April 1st, 2011

Checkout the TubeSync DIVO review in the April 2011 Guitarist Magazine.

”TubeSync DIVO works perfectly and does an excellent job of keeping even the most wayward valves on the straight and narrow. If you want to get the absolute best out of your amp and improve its reliability, DIVO is almost an essential – it’s a real innovation”.

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TubeSync At The UK Northern Newcastle Guitar Show

Friday, February 25th, 2011

Come and see TubeSync / DIVO in action at the Northern Newcastle Guitar Show:

lespaul

Northern Newcastle Guitar Show

The Lancastrian Suite, Federation Brewery, Lancaster Rd, Dunston, Gateshead, NE11 9JR

on Sunday 6th  March 2011

With Blues Guitarist : Mitch Laddie

TubeSync_225TubeSync-DIVO-300x119

TubeSync Facebook Friends Are Now 2,000+

Wednesday, February 16th, 2011

Due to the growing demand TubeSync has now over 2,000 friends on Facebook!

facebook-logo

Click on the link above if you would like to join the TubeSync Revolution

Dennis Marshall’s Amp Repair Shop Scotland Becomes An Approved TubeSync Service Point

Thursday, September 2nd, 2010

Over the last 40 years Dennis Marshall has worked with many people in the music business. Some famous, some to become famous, but mostly just plain ordinary musicians. Dennis has gained a reputation throughout the UK for his work and contribution to the music business and the latest news is……is that Dennis has recently signed up as the exclusive Scottish installer of TubesSync.

‘’TubeSync is a new product and is the new ‘wheel’ for guitar tube amps’’ states Dennis, ‘’ No need to match output valves in your amp. Drop in any combination of makes OR EVEN TYPES!!! (EL34, KT77, KT88, 6L6 etc).’’

‘’ TubeSync will automatically sense and adjust the output bias of each tube independently to balance the amp. Imagine what new tones you can create from those limitless output tube combinations!’’

Dennis has an amp in his workshop with Tubesync installed – so anybody is welcome to come in and try it out!!

You can reach Dennis directly on…………..

Telephone 01383 881761

Email tech@dennismarshall.co.uk

Or Mail or in person at

6 Main Street, Newmills

Dunfermline, Fife, KY12 8SR

Bias_Engine

Every person who goes into Dennis’s workshop is equally important and will always get the same high standard of service. Dennis is an approved Mesa Boogie engineer and has worked with a number of high profile bands including:

Deacon Blue, The Proclaimers, Roger Nichols, Texas, George Michael band, Nine Inch Nails, Wasp, Uriah Heep, The Hazey Janes, Pete Caban, Glasvegas, Katie Melua, Dave Valentine, Ona, Mark DeNeys, Fiesty Piranhas, Ally McErlaine, Bobby Bandiera, Stapleton, Southside Johnny and the Asbury Jukes, Dougie MacLean, The Eels, Joe Gore, Joe Gormal, The Searchers, Jon Solish, Ray Wilson, Idlewild, Lionel Richie, Paul Buchanan, Stuart McCredie, The Eagles, Ron Sexsmith, Tam White, Lauri Anderson, Willie Logan, Bobbie Heatley, Steve Adey, Robbie Gladwell, Frank Macbeth, Sons and Daughters, Hamish McGregor, Miguel Orgel, Pilot, John Goldie , Marcus Ford, Echo and the Bunnymen, Athol Fraser, Mats Nermark, Bobby Carlos, Craig Oxley, Steuart Smith, The Jam, Healthy Minds Collapse, Avast, Adrian Clark, Nick Guppy, Sergeant, Tango in the Attic, Mike Walker, NYJOS, One Night of Queen, Davie Brockett, Runrig, Glasshouse Project, Kevin Brown, Ocean Colour Scene, Tony ‘Doggen’ Foster, Midas Fall, Mayhew….

TubeSync Bias Engines Roll Off The Production Line

Friday, August 20th, 2010

Due to popular demand the TubeSync Bias Engine is now in volume production!

TubeSync

For order enquiries please email sales@tubesync.co.uk

TubeSync UK Service Points Being Appointed

Friday, August 13th, 2010

We are offering select retailers and amp technicians the opportunity to become authorised suppliers of TubeSync technology and to take advantage of our new innovative amplifier technology.

  • Become a supplier of KBO Dynamics’ TubeSync Bias Engine
  • Generate revenue from hardware sales and fitting
  • Benefit from accreditation as a TubeSync technician
  • Add value to your offering with improved amplifier biasing methods, servicing and fault diagnostics, using TubeSync Bias Runner software
  • Get involved as TubeSync emerges in new amp designs from major amp manufacturers.

If you would like to be considered as TubeSync ‘Service Point’ then please email : info@tubesync.co.uk or telephone +44 (0) 1207 585846.

TubeSync_Service_Point