Weell, I see that Jordan has been pulled out of the picture. Interesting.Let's continue with the remaining contestant: Triumph1) I see Jimi courteously explaining some licks to a friend or whatever, on a guitar that looks like an italian made Vox (maybe now we should consider it his main axe too?) ... which might be his or the other guy's, for all I know.Any pictures of Jimi *actually* playing Live or in Studio with a Triumph?2) SS Triumph amps the *main* amps in Keith Richard's rig?Not so sure.I'm talking about Keith Richards the Guitar player, of course.Now if we talk about Keith Richards the BASS player, well, anything is possible.Anyway, I'd *love* to see (40 years later ) the Triumph schematic. Thanks in advance.
I have a question you guys probably would be able to answer. I have a 1978 Peavey Pacer 1-12 combo that I am trying to get into playing shape (just for kicks). On it's own, it doesn't sound too bad but, I plan on using pedals. (Wampler Plextortion & Wampler Tweed '57) for dirt. It has built in reverb that isn't so good & I thought about having an Accutronics long spring type of reverb put in it. I had the pots cleaned recently & thought I would also upgrade the speaker too. The back panel says 45 watts RMS- 8 ohm & I ordered a Celestion Patriot Black Powder 8 ohm- 75 watt. I haven't installed it yet but, wonder if this speaker is adequate to use. Also, is it safe to use pedals slightly louder than unity gain ? Thanks for sharing what you may know. Eric
I remember reading that some SS Vox Amps where made in the triumph factory.
Anyway I just found this; http://vintageamps.com/plexiboard/viewtopic.php?f=10&t=78014Pics are gone and I don't know if it refers to SS.
With those parameters in mind , it was easy to calculate values which I use even today .... and by the way my 1972 network is much more efficient and simpler than that used by , say, Polytone, Crate, or most others, even today.
I noticed that effect on my own a ***long*** time ago.I started making guitar amps in 1969 , all tube of course.In 1972 Argentina defaulted on its external Debt (what Greece is about to do now) and, not having U$$ available, imports were impossible.Tubes dissappeared from the shops, just like that .... or were worth their weight in gold.Started using Transistors, which were still affordable, but noticed that the sound was not the same.Part of it was that SS amps had too high damping (approx. 100 ) which caused "dry" bass; I measured my Twin Reverb type tube amps, and damping was around 1.I added current feedback (straight from SS design books) until I got the same value.It helped a lot.I guess I invented "Valvestate" on my own, about 15 years earlier than Marshall, go figure.Necessity is the Mother of Invention.
I think it really falls down to how each individual perceives certain characteristics in tone.Personally, I hear the effect only as slight boost at low and high frequencies. I usually have to struggle to hear it as well.Then again, I've encountered people who say it makes an astounding difference. Last one saying so wasn't even talking about current feedback per se but about differences of running a 100% tube amp to either purely resistive dummy load, or to a dummy load that mimicked speaker impedance. The effect / difference is essentially the same.For him the resistive dummy load was too sterile, the reactive was "squishy" and responding to playing dynamics making a "Night/Day" difference. Personally, I had to struggle to hear the slight difference. ...as usual.I once angried someone by stating that only thing the "Reactance" control in his Rocktron Velocity did was basically equivalent to diming bass and treble controls of a generic HiFi -style EQ - nothing else. He got mad insisting the control turned his amp to touch-responsive dynamic setup that sagged like a real tube amp. ...all that from a generic boost of low and high frequencies. The control didn't even try to mimic the unique response of a poorly damped amp driving a loudspeaker. It just introduced a basic treble and bass boost.It's all in how you perceive things, and perceiving can be based 99% on imagination and 1% on "real" auditory information. It's always more or less subjective. Therefore I wouldn't jump to definite conclusions too quickly. Yes, objectively viewed the damping barely has a slight effect on frequency response... but so far I never encountered anyone who would sense things 100% "objectively".
Thanks for this explanation. Not so sure I understood all of this, but it's an interesting point of view.I'm just wondering if these non linearities that are enabled either by a tube/output transformer or by a SS amp with CF are in certain cases what causes the dynamics of the playing to be exagerated. Wouldn't say for sure I have a comprehensive understanding of what "linear response" to dynamic playing should hear like, but I'm usually pretty good at producing the sound (both tone and volume) I want with accoustic guitars and at controling the distortion level of a crunching preamp with just how hard I attack the strings. Fact is, on some tube combos pushed in there usually prefered volume range, I often struggle to control these dynamics, generating barely audible sound when plaing soft and ice-pick-through-the-ears far too loud notes when picking just a bit harder. Just in the interest of better understanding, could you tell me if the dampening factor might play a part in this?