On Fri, 21 Nov 2014 07:34:20 -0800 (PST), Bob Welsh
<
brokeg...@gmail.com> wrote:
>Thanks for all the comments, I have followed this forum for many years. Until recently, it hasn't been conducive to expose ignorance while trying to glean knowledge from others. Anyway....
Shame about that. AGA was one of the cooler newsgroups way back.
Maybe it will be again.
>The local player/tech that assisted me did show me his rig(s), his
> back up was Peavey keyboard and session amps. His main rig is rack
> mount; stereo power amp (Peavey also, I believe), power conditioner,
> digital processor, strobe tuner and a assortment of stompboxes
> mounted on a pedalboard hung on the side of his rack flight case.
It sounds like he has a definite idea of what he's after. I'm
curious... what types of stomp boxes? I don't often think of steel
players using overdrive boxes, but most of the other bases are usually
covered well by the digital processor (assuming you meant a rack mount
FX/Reverb/chorus). Maybe he just grew attached to some of the other
effects before he got the rack mount unit.
> He said his preamp is actually in his "foot
> control pedal", and to not see it as just a volume controller.
There's a very good reason to do this. I'll explain below.
> All
> his signal cords were smaller than typical guitar cords in diameter
> and were "solderless". ??
Les is correct; those are almost definitely "George L" cables. Very
low capacitance, hence more top end. You'll find that many players
love them or hate them because of that.
Guitar pickups are inductive, so any 'loading' will tend to roll off
highs. By loading, I mean low impedance inputs on preamps, and in
fact, the capacitance of the guitar cable. It forms a circuit--a
filter actually. Guitarists have come to identify that filter as part
of the sound of electric guitar. But there are limits to how much top
end you'd want to roll off.
Here's where the volume pedal comes into play: Pedal steel pickups
are almost invariably mounted near the bridge. If they were closer to
the neck, you'd get some odd effects as the steel passed over the
pickup--you'd be picking up the wrong side of the string.
Being near the bridge, the pickup's output is weighted heavily toward
the treble end, just as the bridge pickup on a strat. Perhaps for
that reason, steel pickup manufacturers started to wind more turns on
their coils, which subdues some of the icepick highs and of course
provides more overall output.
The end result is that they require the same high impedance inputs as
an overwound guitar pickup. Tube amp inputs are fine, but lower
impedances (more loading) will cause pronounced high end rolloff. So
there's some sense in subduing a bit of the icepick effect, but you'd
ideally want to tailor most of the response yourself with EQ.
If you use a volume pedal with a built-in buffer amp, you're home
free. You can feed pretty much anything with it, since the output
impedance is much lower.
> He is obvious all country/Texas swing
> oriented and at 82 years old, quite proficient in what he plays. At
> that point, his tonal wants and mine will probably differ. He doesn't
> rock or growl in tone.
I had the sense that you were looking for a bit more edge. That can
be tricky for steel. On regular guitar, the strings are in 4ths, so
it's easy to play 5th intervals thru an overdrive for the familiar Zep
or Smoke on the Water sound. On steel, the strings are tuned closer
together, in 3rd or 2nd intervals. Overdriving those close intervals
can result in more grungey sounding distortion (intermodulation). An
overdriven amp may get there more gracefully than the typical
overdrive box.
> My Twin will probably satisfy me for clean power needs. If my current
> lap slide tone interests are more dirty, and small overdriven tubes
> has been my preference, how does the higher impedance pickup of the
> PSG interact with the harder driven smaller amps... Is it a
> tube/transformer killer?? Thanks!
No, not in itself. Regular guitar pickups are fairly high impedance
too, and we never blow amps up (ahem).
Seriously, some steel players do have trouble plugging straight into a
Fender input due to the hotter pickups. You can't just plug into the
'low gain' input either, since it has a much lower impedance, and the
highs will be gone. The volume pedal solves all of that.
Volume pedals can get expensive, so you may want to ask around on the
steel forums for recommendations. The pot-driven ones can get noisy.
There are some that are implemented with an optical 'shutter'
(light->shutter->light-dependent resistor), that should work well. But
they may be prone to another set of problems due to the mechanical
aspect.