HomeRoast Digest


Topic: Hot solder and RayO's kits (2 msgs / 82 lines)
1) From: Mike Davis
Always enjoy RayO's poetry and viewpoint.  The Knight-Kit post stirred 
memories of past Heathkits built including one of the finest CRT TV 
pictures I've ever seen on a kit I built in the very early 1970's.  That 
kit lived nearly 20 years before I had to abandon it and Heathkit 
disappeared.  My speakers are only Acoustic Research AR-3a's and AR-4X's 
- arguably some of the finest ever built and of course no longer 
available 1969 vintage -- table-flat audible spectrum throughout most of 
the range of human hearing with individual scope traces for each unit.  
But I digress ....
Leaving for a small vacation with my TechniVorm, Infinity grinder and a 
load of greens to feed the iR2.  A Hottop is in the wish list but no 
intended field mods.  As much as I love the odor of hot solder, I'll 
reserve that for repairs.  If it ain't broke, don't fix it.
I'm outta here for a while.  Here's hoping Tom will come up with yet 
more irresistible offerings to snag my wallet upon return.
Mike Davis
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2) From: raymanowen
"...only Acoustic Research AR-3a's and AR-4X's "
What?  AR-3a's and AR-4X's?
Ahhh- you've not taken leave of your senses, as I read on. Good on ya!  When
we came out to Colorado for DU,  it occurred to me that all of the Hi-Fi
stuff I accumulated pre- and post- military service would neither fit nor be
appreciated in the married student housing.
"Hey, Ray- you want to trade some of your speakers for my AR-5's?"
Bingo! That's how I'll take music out with us. Egad! They took an incredible
power level for normal listening levels- never even tried them before we got
out here.
As I cranked the power up to achieve exciting listening levels, I was
gritting my teeth- "Hope I don't blow them- my GI buddy Krulik will have my
hide for this!"  70 watts into Patricians would have been unthinkable with
the efficient room-corner coupling.
Things would have been falling, even though the E-V 18W bass drivers could
handle 800w each. Just like the horticultural produce of continents like
Africa, the different facets of flavor and aroma of the beans differ from
country to country, even bean-to-bean just like snowflakes, the cost of
+30dB efficiency of acoustic lenses and horns is frequency/time-domain
distortion. Not particularly flat, but Patricians can be equalized to
re-create the original sound pressure levels.  What's the point?  The human
ear is not particularly flat.
When you can set the grinder to get different flavor/crema balance for
espresso brewing, there's an advantage you can't have at "front row, center"
listening to a large orchestra or anywhere in a 350' x 500' auditorium with
32,000+ pipes in a pipe organ  in 8 widely-disposed
chambers.
With a 7-second reverberation period, every person got a slightly different
sound in the original 42,000 seats, let alone the logarithmic response of
the ear.
"Here's hoping Tom will come up with yet more irresistible offerings to snag
my wallet upon return."
It's what he does.  SCAA "standards" pale in comparison with standards of
Tom and SM. Only if The Man can't walk away from the coffee, does he not.
Glad he didn't leave this Costa Rica Terrazu on the dock.
Cheers, Mabuhay, Iechyd da RayO, aka Opa!
Got Grinder?
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