PDA

View Full Version : Grey Area...


Robert1950
06-13-2008, 06:31 PM
If you run an amp modeller, anything from a POD 2.0 to a Vox Tonelab LE to a Fractal Axe-FX into a power amp or P.A. would you still feel these should be discussed under the amp forum or the effects forum???

What about Vox Valvetronix amp, miked or direct in to a P.A compared to Tonelab direct in to a P.A. ??? Not any real difference, is it.

What do you think. (Yes, I know have a reason for asking this)

bcmatt
06-13-2008, 06:50 PM
Well, if it uses power tubes, I would say it is fine in the amp section;
if it can be plugged into the front of a tube amp or in the effects loop it should be in the effects forum;
If it used directly with a PA, it could be in the PA and recording lounge.
If it is all transistors, it only belongs in stolen gear registry :sport-smiley-002:

Meh, I'm not nearly as funny as I hoped I would be. But seriously, it's interesting how those categories get pretty blurred these days. I don't know. I guess it depends what about your item you are emphasizing.

SinCron
06-14-2008, 12:03 AM
Effects. I love my modelers.

Robert1950
06-15-2008, 11:29 AM
Vox is saying, that the valve is a low wattage power amp and uses a virtual output transformer. So, if we talking about effects, preamp, power amp, output tranny - whether digital or analog, SS or tube, real or virtual - then the way Vox puts it, the Tonelab LE is an modeling amp with valve technology in a modeling floor unit package. This is a quote form the manual:

"Since conventional modeling effects for line recording are not used directly with a speaker, they do not include a power amp circuit, output transformer, or speaker. In other words, they only have a preamp circuit.

A real valve amp sound, however, is produced not just by the preamp, but also by the tone and distortion of the power amp, and by the constant changes in impedance that are created by the power amp driving the speakers. ToneLab LE contains an actual low-wattage valve power amp circuit, a virtual output transformer that uses solid-state components to simulate an output transformer, and a dummy speaker circuit that simulates the varying impedance of a real speaker.

This means that although it’s low-power, ToneLab LE has the same circuit structure of an actual all-valve amp. While much of the tone creation and shaping carried out is done in the digital domain, its
Valve Reactor power amp is 100% analogue. The resulting journey your guitar’s signal takes through the analogue world of the power stage plays a major role in providing the all-important feel and tone
of the original amps we modelled.

The Valve Reactor power stage is, to all intents and purposes, a bona fide valve (tube) push-pull power amplifier, but in miniature. It utilizes a 12AX7 (ECC83) valve (a dual triode device — meaning
“two valves in one”) and is equipped with an output transformer, like a “real” valve amp. The power amp output of ToneLab LE’s Valve Reactor is designed to “read” the constantly changing impedance curve of the dummy speaker circuit system and feed this information back to the virtual output transformer — just like real valve amplifiers do. This information permits the behavior of the valve stage of the amp to vary with the speaker load (impedance), which is another important part of “real world” valve tone."

And if I do attempt to have it discussed in this forum, will I banished to the effects forum purgatory by the tube amp fundamentalists for committing solid state heresy? :wink:

dr_iggi
06-15-2008, 12:42 PM
If you run an amp modeller, anything from a POD 2.0 to a Vox Tonelab LE to a Fractal Axe-FX into a power amp or P.A. would you still feel these should be discussed under the amp forum or the effects forum???

I say amp forum.