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Richard Crowley
Guest
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 Posted:
Mon Oct 24, 2005 4:42 am Post subject:
Re: Speaker Valueation |
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"Kalman Rubinson" wrote ...
| Quote: | Learn to quote correctly.
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....he says while top-posting.
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Kalman Rubinson
Guest
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| Posted:
Mon Oct 24, 2005 4:42 am Post subject:
Re: Speaker Valueation |
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Learn to quote correctly. I did not make this statement and to
represent that I did is irresponsible and objectionable.
The statement was one I quoted from someone else's post.
Kal
On Sun, 23 Oct 2005 18:18:33 GMT, "James Lehman"
<james[remove]@akrobiz.com> wrote:
| Quote: | I think this sort of "competition" among speaker DIY'ers is a
really neat idea. If there were something like this around Atlanta
(who knows, there might be and I not know about it) I might be more
active in speakerbuilding and enter a couple of things. I've read a
lot of books and magazines on the topic, but I'm afraid I've built too
few systems to say I know much about speakerbuilding.
Kal
Speaker building is a lot of fun. I would encourage anyone interested to
give it a try. If you have no clue at all, I would suggest looking for a kit
that includes all of the drivers and the crossovers and leaves it up to you
to make the box. That will get you into some of the physical stuff, and if
you play around with the parts you have, you can learn a lot about the cause
and effect aspects of speakers. Definitely get a good, recent book on the
subject. But most importantly....... realize that speaker design and
building is art. There is no such thing as a perfect speaker system. One
kind of speaker system is not better than all the others. All of the typical
variations have a practical application and a following of listeners who
prefer "that sound". Use all of the math and measuring you can wrap your
brain around. You will find that almost every decision you make is some sort
of compromise between either impractical or impossible extremes. Having the
goal of showing your design ideas to other people is quite motivating. Way
back in 1995, when I first got a connection to the Internet, Roy Pederson
(sp?) invited people to send him design information that he would post on
his website. That's when I made "The Extra Stimulus Twin Iso 8". It's still
there on his site and I still get questions and comments about it. I just
wonder how many other designs have been inspired by this one.
http://www.speakerbuilding.com/content/1035/
To really do things right, you need some tools; not just the ones in the
garage for making the boxes. You need at least one good electrical
multimeter and a signal generator (these days that's a sound card and some
code). A few power resisters that are measured very accurately in the 8 to
40 ohm range are also very useful. With these things you can measure the
values of coils and caps and get a handle on the real TS parameters of your
woofers.
James. :o)
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Schöön Martin
Guest
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| Posted:
Tue Oct 25, 2005 2:55 pm Post subject:
Re: Speaker Valueation |
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"Ethan Winer" <ethanw at ethanwiner dot com> writes:
| Quote: | I'd like to figure out what a nice pair of my own hand made speakers is
really worth.
What they would be worth TO ME depends entirely on how good they are. I'm
not the type to be impressed by a hand polished high-gloss finish. Nor do I
care how many twists you put in the wire between the crossover and driver.
All I care about is frequency response, distortion, dispersion, power
handling ability, etc.
Here's a way to distinguish your line: Be the first manufacturer to actually
publish THD and IM distortion specs. :->)
2nd maybe. I think Ingvar Öhman willingly shares this kind of information. |
If he counts as a speaker manufakturer is another matter. Selling
loudspeakers is a side-kick activity. He spends nothing on ads and
doesn't even have a web. Word-of-mouth leading to one of his monthly
demos/tutorials is what makes you a costomer of his.
So, don't worry if you never heard of this guy before :-)
--
========================================================================
Martin Schöön <Martin.Schoon@gmail.com>
"Problems worthy of attack
prove their worth by hitting back"
Piet Hein
======================================================================== |
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Guest
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| Posted:
Wed Oct 26, 2005 4:39 am Post subject:
Re: Speaker Valueation |
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"Ben Bradley" <ben_nospam_bradley@frontiernet.net> wrote in message
news:mqqgl1d9qslputvua6jlthf8m9a4h30cb5@4ax.com...
| Quote: | On Thu, 20 Oct 2005 22:52:41 -0400, Kalman Rubinson <kr4@nyu.edu
wrote:
On Fri, 21 Oct 2005 02:38:12 GMT, "James Lehman"
james[remove]@akrobiz.com> wrote:
Hello.
How is it that some speaker systems cost hundreds, some thousands, tens
of
thousands and even hundreds of thousands? Is there any sense at all to
the
prices or is it purely a matter of whatever they can get?
I have the impression that once things get into the four-digit and
up range, it's more the latter than the former. ISTR Arny (or someone
else?) writing that he saw some high-end speakers with fairly mediocre
components.
The reason I ask is because I'd like to figure out what a nice pair of my
own hand made speakers is really worth...
I've stumbled across your site before, your speakers sure look
nice...
About the only way I can think of to determine their "worth" is to
put a price on them and try to sell them in some high-end store, and
see how they do compared to others.
well that and I'd like to start a
long thread of nonsense in this group that has nothing to do with my
original question...
http://www.akrobiz.com/spekaers/
First, your URL is mispelled: http://www.akrobiz.com/speakers/ will
work better.
Second, what does it cost you to build them?
Third, to what have you directly compared them?
Speaking of directly comaring, I recently (also) stumbled acrosss
this page:
http://www.kaiaudio.com/diy200x.html
(but that page is outside its frame: go to http://www.kaiaudio.com and
click "DIY 200X" at the bottom to see it as the webmaster intended)
I think this sort of "competition" among speaker DIY'ers is a
really neat idea. If there were something like this around Atlanta
(who knows, there might be and I not know about it) I might be more
active in speakerbuilding and enter a couple of things. I've read a
lot of books and magazines on the topic, but I'm afraid I've built too
few systems to say I know much about speakerbuilding.
Kal
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The best and most thourough DIY speakers I've seen are here:
http://www.audiocomponents.nl/speakers/scanspeak/reference/scanspeak-reference_eng.htm
And here: http://home.hetnet.nl/~brian.gee/news.html
You can also check DIY speakers.com and search their list of projects.
For bass freaks search for the cult of the infinitely baffled. |
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Guest
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| Posted:
Wed Oct 26, 2005 4:41 am Post subject:
Re: Speaker Valueation |
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"Arny Krueger" <arnyk@hotpop.com> wrote in message
news:zr6dnW4K7czUdMXeRVn-qA@comcast.com...
| Quote: | "James Lehman" <james[remove]@akrobiz.com> wrote in message
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| Quote: | Sorry, I'm not a fan of metal-cone drivers and I'm not a fan of Isobaric
designs.
What's your beef with Isobaric designs? |
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Guest
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| Posted:
Wed Oct 26, 2005 4:41 am Post subject:
Re: Speaker Valueation |
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"James Lehman" <james[remove]@akrobiz.com> wrote in message
news:nsu6f.147293$lI5.9925@tornado.ohiordc.rr.com...
| Quote: | You seem to have a lot of enthusiasm for shooting down something you've
never seen or heard in person and therefore know nothing about.
You don't know anything about my character or what expertise I put into my
speaker designs.
Any normal, rational person who might think about getting a set of
speakers
from me would come and audition them for themselves. I would also extend
the
offer to be able to return the speakers... maybe up to a couple of months
after purchase with no questions asked. I think that's reasonable.
And expensive. |
| Quote: | What's with all the negativity? Do you have a problem with the idea that I
or anyone else might actually have some unusual talent or skill?
It's not about that at all IMO, it's just that it takes a lot more than most |
people seem to realize to get any business, let alone one as technically
intensive as speaker building to be profitable.
| Quote: |
At one time I considered trying to start my own speaker business. |
The tools that one needs to do this properly are expensive and one needs a
lot of training and the capital to buy in quantity. What the DIYer pays for
a SEAS tweeter for example is 10 times more than what a manufacturer pays.
You need woodworking equipment, test gear, a stock of xover components and
most importantly advertising and reviews.
In the end the "value" of a speaker is what the market will pay.
The best and most dramatic improvement a DIYer can make come from subwoofers
that can be made pretty inexpensively (if you use Sonotube) and can get bass
notes in the teens.
There are some very good kits out there but they will not be what you could
get in terms of quality from a decent manufacturer.
The best kits IMO are the ones from Joe D'Appolito although you can check
out the ones at humble homemade hi-if for some riskier ones.
Have fun and learn that the comments you aren't liking are not intended to
hurt, but are based on some pretty extensive experience. |
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John Richards
Guest
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| Posted:
Wed Oct 26, 2005 10:11 am Post subject:
Re: Speaker Valueation |
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"James Lehman" <james[remove]@akrobiz.com> wrote in message
news:nsu6f.147293$lI5.9925@tornado.ohiordc.rr.com...
Snip...
| Quote: | What's with all the negativity? Do you have a problem with the idea that I
or anyone else might actually have some unusual talent or skill?
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If you are so confident that your plan should work then why are you looking
for approval? Just do it! |
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