[Vintage-Audio] Re Speaker Performance

Fri Aug 16 01:59:01 2002

Oops..I didn't finish that last one before I sent it.. The
L-100 may have knobs, I cant tell, but I seem to remember
two pots across from the midrange. THe L-166 came out after
the L-100 and had a different dome tweeter in contrast to
the L-100s direct radiator. They were both made after the
company changed hands and both were based upon the 4320
designed before the company changed hands. Lots of history
at:

http://www.lansingheritage.org/images/jbl/catalogs/1976-home/page2.jpg

WBob

"Duane Fischer, W8DBF" wrote:
> 
> The Century L-100 do have any knobs, Bob. Yours are obvious the new/cheaper
> model after the company was taken over by whomever took them over. The originals
> sound much different.
> 
> ----------
> From: Bob <[email protected]>
> To: [email protected]
> Subject: Re: [Vintage-Audio] Re Speaker Performance
> Date: Thursday, August 15, 2002 11:34 PM
> 
> When I picked up my L-166s he had a mint pair of L-100s and
> they had too many highs even with the both knobs turned
> down. The 166s are better, with a dome tweeter but they
> still have more highs than I like. I am slowly getting used
> to them though...the bass is superb and I am losing all my
> HF hearing anyway (-6 at 12KHz)
> 
> WBob
> 
> "Duane Fischer, W8DBF" wrote:
> >
> > The J.B. Lansing L-100 series ran for a number of years, Bob. Which
> model/series
> > are yours? Some have a letter at the end, such as "T" in 1987 etc. Now I have
> to
> > disagree with your analysis of the high frequency, with all due respect, me
> > thinks thee has tin ears!
> >
> > The L-200 were studio monitors. I though they only had the mid range and the
> > woofer?
> >
> > Get a copy of the Misty Moods "One Stormy Night" on vinyl or CD. Now there is
> a
> > nice test CD. When that steam locomotive slips and slides with metal wheels
> > spinning on those rain soaked tracks and the whistle splits the stormy night
> air
> > with that whail that would wake the departed in the next country, only the
> best
> > speaker systems survive to be played again. The rest suffer from the split
> > personality and cone rupture syndrome. When that train goes through the sound
> > room it is enough to make you change your Fruit of The Looms. Dang! I love it!
> >
> > Duane W8DBF
> >
> > ----------
> > From: Bob <[email protected]>
> > To: [email protected]
> > Subject: Re: [Vintage-Audio] Re Speaker Performance
> > Date: Thursday, August 15, 2002 7:29 PM
> >
> > My experience shows that the JBL L-100 are tinny and have
> > over done highs. I have L-166s which are better in that
> > regard and the L-200s are even better. I too have my JBLs
> > mounted at ceiling level and not pointed down but
> > horizontal. The bass is great, and it still has more highs
> > than I like but it is adjustable and I am still tweaking.
> >
> > My bass transient tester is Telarc Timewarp track 2 and my
> > tester for really low stuff is Cosmic Hippo by Bela Fleck.
> >
> > WBob
> >
> > "Duane Fischer, W8DBF" wrote:
> > >
> > > Bob,
> > >
> > > Yea, ya got me. I did stretch things on my analogy with the Flea breaking
> wind
> > > and the 757 taking off. My hearing is so accute that I hear things sighted
> > > compatriots simply ignore. Notice I said "ignore", and not "did not hear".
> The
> > > idea that when a person loses one of their five basic senses, the others
> > > compensate by becoming nearly 6 Million Dollar Man bionic, is false. The
> > > differenece is, and it is an important one, is that I listen to all sounds
> > > because I am not distracted by visual input. The human being learns 92% of
> > what
> > > he/she learns by visual input in one form or another. My biggest difficulty
> is
> > > in filtering out all of the sounds to focus on what I want, or need, to
> hear.
> > > The older I become, the more difficult this filtration process becomes. My
> > life
> > > depends on my hearing, and the ability to hear essential sounds or changes
> in
> > > the air pressure on the surface of the eardrums, daily. One
> misinterpretation
> > > can result in an injury or my becoming fertilizer.
> > >
> > > J.D. Sumner, for the record, is in the Ginnis book of World Records for
> > hitting
> > > a note of 32 Hz! He was the lowest bass singer in the world. For those who
> > care,
> > > the song was on the album The Incomparable Stamps and is Blessed Assurance.
> He
> > > and his Stamps quartet, (southern gospel), backed up Elvis Presley the last
> > > seven years the king of rock and roll was alive. Yes I knew J.D. Sumner,
> have
> > > his autograph and enjoyed him many times in person. He not only could hit
> > those
> > > unbelievable notes, he could sing down there! Will never be another!
> > >
> > > My listening room has a 60% Cork cieling, with carpet and drapery to dampen
> > > sound bounce. The J.B. Lansing Century L-100 are mounted at the cieling and
> > > angled down to hit at ear level at the opposite end of the room while
> sitting
> > on
> > > the couch with twin recliners built into it. The B&W are positioned either
> > side
> > > of the master console and are floor mounted. They can be used as monitors or
> > > phased in with the J.B. Lansings. When phased, the entire wall lights up
> with
> > > sound. You have to hear it to even begin to comprehend what I am speaking
> of.
> > > Writer though I am, words fail this!
> > >
> > > The proper room is just as important as the proper electronics for
> listening.
> > A
> > > harsh room yields a harsh sound. Remember those high school assemblies in
> the
> > > gymnasium with that echo off the brick walls? Then think about the outside
> > > amphitheaters with such perfect acoustics as to not require a microphone and
> > > public address system for a person standing in the middle to be heard by
> > > everyone seated there.
> > >
> > > My eleven year old grandson was listening to what I had on the stereo and
> told
> > > me to use those speakers up by the cieling as they sounded way better than
> > those
> > > on the floor. What can I say? Even an eleven year old picked the J.B.
> Lansing
> > > Century L-100 over the B&W 630's.
> > >
> > > Duane W8DBF
> > >
> > >
> > >
> > > ----------
> > > From: Robert  J.  McKee <[email protected]>
> > > To: [email protected]
> > > Subject: Re: [Vintage-Audio] Re Speaker Performance
> > > Date: Thursday, August 15, 2002 5:49 PM
> > >
> > > ----- Original Message -----
> > > From: Duane Fischer, W8DBF <[email protected]>
> > >
> > > > Please do not misunderstand where i am coming from. I have
> > > > dealt with audio for over forty years. I am also totally
> > > blind, now.
> > > > I know good sound when I hear it. I can hear a Flea fart at
> > > five
> > > > hundred yards while a 757 is taking off!
> > > >
> > > <snip>
> > > Duane is stretching things just a bit here to make a point,
> > > and I
> > > believe it has to do with detail... where a truly outstanding
> > > system
> > > shines.  That 757 taking off should not distort the flea fart
> > > and this
> > > is very important in good sound reproduction.  The term Hi Fi
> > > has
> > > no meaning whatsoever any longer.  Altec tried years ago to
> > > get
> > > away from it by using the term Playback.  And that term bombed
> > > also with the "professional" association.  Because
> > > "professional"
> > > really meant reliable and had little to do with accuracy of
> > > reproduction.
> > >
> > > Duane also made a point in an earlier posting which hit home
> > > with
> > > me.  I designed and built a home in the early nineties with
> > > music in
> > > mind.  The music room is also the listening room with floor
> > > dimension
> > > of 16' x 30' with clerestory design... the ceiling sloping
> > > from almost
> > > 19' to 10'.  It does wonderful things for my stereo system.
> > > For the
> > > very first time I was not overdriving a room.  For the very
> > > first time
> > > I felt solid organ pedal tone power.  I had heard loud before,
> > > but now
> > > power (and there IS a difference).
> > >
> > > The size of my woofer in my two-way system is 10".  Anything
> > > larger presents problems with being s l o w to the point of
> > > distraction
> > > from music.  There may be some large drivers out there with
> > > the
> > > necessary combination of small voice coil diameter with
> > > micro-gap
> > > and small magnet which would be quick and accurate, but none
> > > have come my way.
> > >
> > > Always happy to stir the pot a moment or two.
> > > Bob McKee
> > >
> > > _______________________________________________
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> > > List Administrator: Duane Fischer, W8DBF
> > > ** For Assistance: [email protected] **
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> > ** For Assistance: [email protected] **
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