Re: Jazz/ Precision - EQ, Modelling

RichL <rpleavitt@xxxxxxxxx> wrote:
<aborgman@xxxxxxxxxxxxxxxxxxxxx> wrote in message
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RichL <rpleavitt@xxxxxxxxx> wrote:
"CS" <catdriver@xxxxxxxxx> wrote in message
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rakmanenuff wrote:
On Oct 27, 11:14 pm, AnonymousJ <craigs.list.ja...@xxxxxxxxx> wrote:
On Oct 27, 5:33 pm, rakmanenuff <rakmanen...@xxxxxxxxxxx> wrote:

EQ is not going to make a P bass sound like a Jazz. That's simply
the
wrong tool for the job.

The root of the issue is the totally different style of pickup used on
the two basses. Single split coil on the Pbass, which is essentially a
humbucker, and two single coil pickups on the Jazz. One is located at
the bridge which will be supplying a treble balanced sound and one in
neck/mid body that carries the fuller tones of the strings at that
position. The two single coils are blended to get the Jazz bass tone,
as well as forming a hum canceling circuit depending on how they are
wired. P's and J's are really apples and oranges, so just as a Pbass
really can not sound like a Jazz neither will they inverse work. The
closest one can get is to change the wiring of the split coil on the
Pbass to mimic a single coil, but that's only going to solve half of
the
equation.

I believe that part of the confusion, is based on the way you are
trying
to use the term EQ. Equalization is generally performed after the
instrument has generated the initial tones which is the job of the
pickups volume and tone controls. Generally P's and J's are passive
wired, and the tone is basically a pass no pass filter. Unless one has
an on board active circuit, the basses tone control isn't modifying the
original tone beyond allowing a certain range of frequencies to be
passed to the amp. An active circuit will boost or cut a given range
of
frequencies.

When using an equalizer one is generally looking to enhance frequencies
lost to a certain environment, or to cut frequencies that are two
strong
for the environment.

Basically as I see it, on board controls generate the tone one is
seeking and EQ is used in an attempt to better fit the tone to the
room.
As others will say EQ will not make orange juice from apples.

Even going beyond that, the initial "tone" generated by a bass (even
before
the pickups add their own contribution) is a function of the amplitudes
of
the various harmonics of the note being plucked. This is a function of
where the note is plucked on the string, which string, etc. And
obviously
the frequencies of these harmonics depend on the frequency of the
fundamental (they are multiples). In order to mimic the changes in the
relative amplitudes of these harmonics, an EQ would have to "sense"
which
note is being played and alter the frequency response accordingly. Now
add
on top of that the fact that the two different types of pickups sense
differently, and it becomes essentially impossible for an EQ applied
after
the fact to make one instrument sound even approximately like the other.
Even with active circuitry, it can't be done.

If that "active circuitry" contains DSP that may be incorrect.

If so, it had better contain much more sophisticated algorithms than those
in "amp modelers" attempting to emulate real tube amps!!

I think you'd be surprised at how few people could actually pick out an amp
modeler being used in a band siutation from the actual amp in a double blind
test. I bet a good percentage would be able to tell the two apart, but I bet
the number that could tell which was which would be in the single digits
percntage wise.

--
Aaron

LagerHaus5 - for all your classic rock needs.
http://www.myspace.com/lagerhaus5
.

Relevant Pages

  • Re: Jazz/ Precision - EQ, Modelling
    ... and two single coil pickups on the Jazz. ... The two single coils are blended to get the Jazz bass tone, ... P's and J's are really apples and oranges, so just as a Pbass ... An active circuit will boost or cut a given range ...
    (alt.guitar.bass)
  • Re: My latest custom wiring job
    ... Pull neck volume: Places Jazz coils in parallel for single coil tone with NO HUM. ... Puts one coil of the JB in series with one coil of the Jazz, for humbucking tone that sounds bright but full. ... With .01, you still have some mids left, and it doesn't get very dark until the bottom of the pot travel. ...
    (alt.guitar)
  • Re: My latest custom wiring job
    ... used four push/pull DPDT pots with treble bleeds and new tone cap values. ... Pull bridge volume: As above, ... Puts one coil of the JB in series with one coil of the ... very dark until the bottom of the pot travel. ...
    (alt.guitar)
  • Re: Mods for Epi LP Custom Ebony (humbuckers/wiring)?
    ... Have also red about some wiring mods, ... I shy away from Gibson and Epiphone pickups. ... Not because "they suck," but because I prefer a brighter starting tone. ... The JB does sound quite good in split coil single coil mode. ...
    (alt.guitar)
  • Re: My latest custom wiring job
    ... Pull neck volume: Places Jazz coils in parallel for single coil tone with NO HUM. ... Pull bridge tone: Puts one coil of the JB in series with one coil of the Jazz, for humbucking tone that sounds bright but full. ...
    (alt.guitar)