Posts Tagged ‘amps’

Orange Amps Launch TubeSync DIVO at NAMM 2011

Thursday, January 6th, 2011

For over forty years Orange amps has pushed back the boundaries of guitar amp technology and at NAMM 2011 the company is proud to announce a worldwide exclusive distribution agreement for DIVO TubeSync, a truly revolutionary new guitar amp technology. Here’s how Orange describes the technology:

TubeSync DIVO

The new DIVO technology automatically adjusts the bias of the output power tubes to ensure their full potential is realized. It monitors the amp’s performance and will isolate faulty tube failures, by running them at half power until the tubes can be changed. The DIVO system also increases the reliability of amplifiers by maintaining the optimum performance of the tubes by performing an ‘in circuit’ test every time the amplifier is powered up.

TubeSync-logo-500TubeSync DIVO technology opens up a whole new dimensions in tone options allowing for the first time ever the ability to mix and match tubes. You can experiment with an EL34, 6L6, 6550, KT77 or any other tube type all at the same time in the same amp. With DIVO the Tubes are automatically matched.

DIVO will extend the lifespan of your tubes and never again pay a tech to re-bias

Orange Logo Illustrator v9 BLKOrange amps will be offering this as option in their new Rockerverb 100 which will be “DIVO Ready.” For other Orange amps and most other brands Orange offer the DIVO Orange TubeSync OV4, a complete standalone unit.

Guitar Amp Tubes / Valves The History Of .. EL34 s etc

Thursday, March 18th, 2010

Until the introduction of the germanium transistor in the late 1950’s, there was no alternative form of high quality audio amplification to the thermionic valve (American terminology was always ‘Tube’). The 1960’s, 70’s and 80’s saw a steep decline in the usage of valves for all purposes except audio amplifiers, to the point that, with a few exceptions, they were almost entirely replaced by transistors and integrated circuits. However, since the late 1980’s, valve amplifiers have experienced a renaissance which has, in the last decade grown rapidly year on year.

The unique character of the ‘Tube Sound’ has once again attracted both amateur and professional interest in the areas of High Fidelity (HiFi) amplification, Musical Instrument (MI) amplification (notably the electric guitar) and Audio amplification. The dominance of digital technology now, means that the valve amplifier is seen as new to younger people and as nostalgic to the older generation. Please note it is estimated, that the electric guitar amplification market consume as many as three out of four of the world’s production of audio tubes.

EL34 Valve

EL34 Valve

Many arguments have been put forward as to why tube amplification ‘sounds’ better than digital. Some differences can be proved using measuring instruments, whilst others are down to the nuances of the human ear. Whatever the reason, evidence shows more and more listeners appear to prefer the sound of a tube amplifier.

The demand for tube amplifiers is rapidly growing, with products ranging from a few hundred pounds to several thousand pounds, depending on quality and output power, with tube sales worldwide currently standing at over $100,000,000. Today vacuum-thermionic devices hold sway over the US $100 million worldwide guitar amp business. One rough estimate shows a 10-percent-per-year growth in demand for tubes used in MI instrument amplifiers and high-end audio since the late 1980s, with no apparent slackening.

However, the problems with existing tube amplifier technology is that the circuits used are based on ‘classic’ designs developed in the 1940’s and 50’s and, although more modern technology has occasionally been applied, this is usually confined to regulating the power supplies. One of the principle disadvantages of existing tube amplifiers is that they are very inefficient in converting electrical power into audio power. This is largely due to the ‘classic’ methods of controlling them. All analogue high power amplifiers require a system known as ‘Biasing’ to be applied to them. This controls the output devices and prevents them from ‘Thermal’ overload and eventual destruction. It does, however, incur a heavy cost in loss of output power and increased heat dissipation. In addition valves also need to be used in ‘Matched’ pairs, in order to control distortion of the output signal. This process is time consuming and expensive when carried out on a commercial basis.

THE SOLUTION IS ……..

EL34

EL34