Newsgroup: it.hobby.hi-fi
Titolo: In Inglese:Per i costruttori solo.

Posted by Æ ( A ) on June 04, 2003 at 18:46:45 By Audio Asylum.
My take on DIY2003 loudspeaker building event.
First of all, thanks to Mark K for hosting the event. By the way Mark, I 
accidently left a folding metal chair at your house (garage). But you 
can keep it if you want, or I'll get it 
next time. And thanks for that free pair of LINEAUM monopole tweeters. 
Unlike last years (2002) event in Elk Grove, California, this years 
event in Rocklin had a significantly higher number of audiophile quality 
builds. I don't seem to recall there being 
any 3 way loudspeakers last year. (but I do remember that great 
bar-b-que we had last year) 
This year showed off several nice 3 way projects. I also thought it was 
nice to see/hear 
someone using a horn. But still no electrostatics again. Barry? 
I sat in (demanded) a front row seat for most of the listening sessions, 
and with only a few exceptions, they all sounded very well. Practically 
everyone there used better or even premium woofers and tweeters this 
time around. DOTD, only lasts for one day. But the pain of a lousy 
driver keeps on giving (ringing) in your ears the whole year long. Which 
agrees with what I've said in the past, USE GOOD DRIVERS. I personally 
don't believe that you can "crossover" fix 
budget/cheap drivers. And if you do believe it, I'm not going to waste 
my time arguing with you 
about it. No, crossovers are not the most important components. Drivers 
are! Maybe I'll be able to demonstrate a crossoverless pair next time. 
Full rangers anyone? Actually, I was thinking 
of a 2 way with a piezo tweeter. Don't laugh just yet, I might just do 
it. 
Also unlike last year, this year had us on hand a true audio dignitary 
-Seigfried Linkwitz. 
Nice to meet you, sir. His ORIONS were 'clearly' the best of the whole 
bunch. However he had substantial (unfair) advantage in that his was a 
bi-amped setup with dedicated electronic crossovers and electronic 
correction! They wouldn't have sounded nearly as good had he been 
using a single stereo amp and passive crossovers. For whatever reason, 
Mr. Linkwitz dislikes 
tube amplifiers! With the exception of Mr. Linkwitz, everyone there who 
was using the SEAS W18's, seemed at least to me to have a little bit of, 
if even minor problem with them. Even though very revealing, the W18's 
are a difficult driver to use! Somebody was supposedly going to bring 
some FOCAL stuff along, but I don't think he showed up, or did he? I 
personally feel that FOCAL out does SEAS, but only by a little bit. 
The most awesome and dynamic pair belonged to James Miyake. His line 
arrays were absolutely grand! They cost him $1,900 in parts. I liked the 
ingenious idea of using sleepings bags as protective covers. Obviously 
Jim Griffins research into line arrays, pans out. I would like 
to have listened to them playing some serious (loud) rock-n-roll! 
Give me some Jimi Hendrix, Led Zeppelin or Van Halen please! 
John Hancock (not the original) presented an exceptionally non 
fatiguing, low distortion pair 
of 2 ways, but I couldn't get him to c r a n k them up either, to hear 
what they would really do! Southern California was aptly represented 
again, this year by Paul Kittinger. His white TL's were also very non 
fatiguing, especially for 4 ways! He had the best made-best looking 
grilles and the most excellent example of driver/crossover integration. 
But they sounded a bit lean to 
me and could have used some more bass. Maybe a diffraction loss 
compensation problem? 
The resulting limitation of using a series crossover? I would have 
swapped out his woofer and used a dual voice coil version, employing the 
second voice coil for some additional bass lift. 
Honorable mention has to go to Ratch Higgins, the local high school 
physics teacher who volunteers a lot of his time and resources helping 
teenagers. His one student's example demonstrated very well. Fit and 
finish were lacking, but both the student's and his loudspeaker 
performed way better than they looked. Use some bigger ports next time 
Ratch. It was truly amazing how well he was able to integrate 3 way 
drivers into an enclosure with lower order crossovers! 
The best looking (furniture) pair of enclosures belonged to Brian F. His 
hand rubbed "French finish" high gloss shellac over exotic wood veneer 
was truly beautiful. Dave Brown's finish was still a work in progress. 
His enclosures featured some handsome thick maple, on sloping angles. 
And they had a nice warm full bodied sound. One can only imagine how 
good they might actually look when he is finally finished finishing 
them.... Say that three times in a row. 
OK, some of you out there are probably asking (again this year) what did 
I bring? First off, 
not everyone who attended brought something to demonstrate. Second, 
there were probably twice 
as many people listening as there were those with projects. Third, if it 
had not been for me teasing Dan Carroll about the Sacramento KINGS 
(loosers), I would never have even known about 
the event. I barely found out in time. (thank you Dan) So when I 
contacted Mark K via e-mail, 
he informed me that there probably would not be enough additional room 
or time in the scheduled lineup for me to demonstrate something. Next 
year, participants should be limited to time, or maybe only 2 pairs per 
person. One guy (Jim S) showed off 3 different pairs. All 3 pairs 
sounded really nice, but he played the same three identical tracks of 
music on each and every pair, hogging up time. His 2 way with the 7" 
SCAN-SPEAK Revelator woofer and the USHER tweeter was my favorite of his 
three demos. 
Hardly anyone there used contemporary or really familiar music to 
demonstrate their loudspeakers. All those (old people) listening to 
opera and foreign language stuff, yech! It got to be so boring that I 
took to drinking wine (on an empty stomach) and eating strawberries. 
Someone did play some good James Taylor though. When my appetite finally 
kicked in, I scarfed down 3 or 4 slices of pizza. I understand people 
bringing their own favorite music selections, but program 
unfamiliarity makes subjective evaluation even more difficult. Why do 
people always bring along music they think will favor their 
loudspeakers? For a change I'd like to hear someone play something that 
reveals their loudspeakers weaknesses! 
Just about all the jazz selections played there were dull and lifeless. 
How come nobody brought anything from the MAPLESHADE catalog? Or maybe 
something from WINDHAM HILL or a SHEFFIELD LAB disc? 
Or how about one of those STEREOPHILE magazine test CD's instead? PIERRE 
VERANY, anyone? 
For those of you who don't know, the STEREOPHILE magazine test CD's 
feature selected tracks of live acoustical music, recorded classical 
music and various assorted test tones especially suited for subjective 
evaluation. I personally don't like Corey Greenburg, (formerly of 
STEREOPHILE magazine) but his recorded forwards played backwards 
direct-to-tape guitar cut named EDEN is a wonderful example of live 
music for listening sessions and evaluations! I found myself wishing 
someone would put on something by John Philip Sousa, (marching band 
music) just so that I'd have something to tap (stomp) my feet to. 
-- 
L'eventuale link qui sopra ti porta alla specifica risposta che cerchi e che preferisco non darti qui.
Ciao berry
soundberry.com
scrivetemi per risposte personali.

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