Most sound engineers are not audiophiles.  In fact the most popular
speaker for mixing for the last few years have been the Yamaha NS-10,
$300 a pair and they sound like crap!  The idea is that if you can make
the mix sound good on these, they will sound good on anything.
I just read an interview with a mastering engineer who scrapped all
his old equipment and equipped his mastering facility with audiophile
stuff after hearing a friend's system.
Your sound engineer friend listens to music all day, he no doubt
spotted something out of whack with your setup right away
without even trying.  Each speaker system is different and will
have frequency peaks or dips.  Then again, many live music
engineers (and rock musicians) have blown out their ears and
need to boost the highs to hear them.
Regarding EQ:  pretty much every instrument on every popular
recording has EQ applied during recording and/or mixing. The
overall mix may have had EQ applied to it during mastering.
You have to be careful with EQ; using it generally introduces
phase shift, smearing the sound and causing frequencies to clash.
Subtractive EQ causes less phase shift than additive.
You are correct that overall EQ is often used to tune a room
after 'shooting' it, using a frequency analyzer.  You would find the
sonic 'signature' or bias of the room, and forever after run everything
through a compensating EQ curve. A room is a box with resonate
frequencies that bunch up according to the dimensions.
The worst would be a square room, creating standing waves
(resonate frequencies).  Next worst would be rooms whose walls
are mathmatically related ie 10x20, 12x18 etc.  Recording studios
generally have high ceilings, too, and frequency absorbing materials
of various types to control the sounds that are bouncing around.
Finally, most loudspeakers are not really capable of reproducing
the lowest bass frequencies.  You can somewhat make up for
it by boosting the bass.  A subwoofer is better.
Avoid centering speakers equadistant between walls or between the
floor and ceiling to avoid standing waves.
I don't consider myself an audiophile.  I think you can put together
a pretty good system without mortgaging your house.  My stereo
system in my living room has the bass gently boosted and the
treble rolled off a bit.  My studio system has a Tannoy sub and near-
field Tannoy phase coherent coaxials.  It sounds great.  The best
headphones I have ever heard are electrostatics-the highs are so
natural. If I had the right room and the bucks and inclination, I
would probably get a pair of electrostatic speakers and a good
subwoofer to handle the lows.
Interestingly, a few years ago, one of the audiophile mags did a
test of all the fancy and not-so-fancy speaker wires.  One of the
ones that ranked pretty high was Romex - A.C electrical constuction
wire!
RR

Bree Mcdonough wrote:

> Hi neighbor, BTW,I live north of Cincinnati about twenty minutes from
> downtown.  (I drive fast though) So you don't have an EQ?  I have a nephew
> who is a sound engineer and when he's in town sometimes he stays with me....
> loves to fiddle with my system.  My system is Onkyo.  Which is about three
> years old now, but I still enjoy it. The speakers are DCM,are you familiar
> with these?  He fiddles constantly with the EQ maybe because of his
> profession?  I always thought of him as a audiophile type though.  Do true
> audiophiles only listen to vinyl?  Thanks for your input.  (I have a home
> theater set-up too and am amazed how important positioning of the speakers
> and thus because of that positioning how the sounds bounce off the wall.  I
> knew nothing about setting this up,my brother did most of the work.  The
> hardest part for him was hiding the massive amount of wiring in the walls.)
>
> Bree
>
> Quite the opposite, Bree.  Audiophiles, true audiophiles, don't like tone
> >controls.  In fact some very, very, hyper-expensive gear lacks tone
> >controls
> >completely.  The best setups have so much detail that the room is not in
> >the
> >way, so there's no compensation needed.  A car, on the other hand, is a
> >terrible place to listen to music for lots of reasons.
> >
> >(The exception to this is ancient 78s and LPs.  Before the RIAA curve
> >became
> >the standard, each record company had their own "curve" and therefore, a
> >corresponding tone compensation emphasis).
> >
> >Lama, who positions the living room speakers so they sound best without
> >tone
> >controls, then adds the furniture.  Really.  Then, I adjust the treble in
> >the car.  (sigh)
> >
> >Bree said,
> > >> Having had a little Christmas cheer earlier tonight.......when I really
> >want
> >to feel the music and when I'm really in to it........I like mega bass.
> >When I play Joni at home......mid-range is down,treble up.  I know there
> >are
> >audiophiles that change/fiddle with the EQ on each individual song......not
> >cd but song!  They HEAR everything that was intended to be heard and maybe
> >more?>>

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