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94 Search Results Found |
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Forum: Speaker «»
Posted on: Thu, 03 June 2004 10:39 «»
By: hurdy_gurdyman
Found them
Found them, thanks to elcraigo over on the Fullrange Driver Forum.Dave>elcraigo Re: Need T/S parameters for EV LS-8 T/S for (2) LS8 I measured: EV - LS8 Sample #1 "Fs = 76.000 Hz" "Zmax = 15.825 ohms" "Re = 5.600 ohms" "Zdb3 = 10.954" "F1 = 59.781 Hz" "F...
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Forum: Pi Speakers «»
Posted on: Thu, 08 April 2004 23:12 «»
By: Wayne Parham
Re: Subwoofer project Zmax
I would expect this subwoofer will not be particularly well suited for tube amps.
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Forum: Pi Speakers «»
Posted on: Thu, 08 April 2004 22:51 «»
By: Walter Owens
Subwoofer project Zmax
Is there a Zmax spec for the subwoofer project? If there is not an actual number, do we know if the Zmax value is expected to be tube friendly? ( or SET friendly or whatever)If you hadn't explained it I wouldn't be asking.best regards,Walter Owens
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Forum: Speaker «»
Posted on: Tue, 02 March 2004 01:01 «»
By: Wayne Parham
Re: Altec 406 specs?
Hmm. Using a 45 SET does put you in a position where your midwoofer specs are important. One of the most popular drivers I've found is the Delta 15, but it's a little bigger than you're wanting to go. The box must be very large too. The Alpha 10 is su...
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Forum: Pi Speakers «»
Posted on: Fri, 05 December 2003 10:12 «»
By: GarMan
Question re: Values for R-L-C Mechanical Reactance
Hi Wayne,I think I understand how to calucate values of L and C to similate mechanical reactance in SPICE. R of L and C = Zmax/Qms at F(res)However, looking at your examples of woofer models in the crossover document on your site, it seems to assume that ...
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Forum: Pi Speakers «»
Posted on: Sat, 22 November 2003 22:50 «»
By: Wayne Parham
T/S Measurements
A few weeks ago, Akhilesh Bajaj and I set about to measure a loudspeaker's T/S parameters. Our goal was two-fold: To find the T/S parameters of his speaker and also to check the varience between several methods. The equipment used included a PC for gene...
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Forum: Pi Speakers «»
Posted on: Thu, 06 November 2003 05:36 «»
By: Wayne Parham
Re: Announcements
Uh-oh - I'm in trouble. I don't want to steal Chris's fire. But what the calculator does is to tell you the electrical equivalents R,L and C when given Free-air Qms and Zmax. Maybe if we grovel and beg, he'll add functionality to input other driver and ...
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Forum: Pi Speakers «»
Posted on: Mon, 03 November 2003 20:55 «»
By: Wayne Parham
Re: A few useful documents
Glad to hear you figured out your problem with Spice. I hate little "gotcha's" like that. You can chase 'em for hours.About making a virtual circuit that models mechanical resonance, the idea is to find parallel L,C and R that acts as the mechanical reso...
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Forum: Pi Speakers «»
Posted on: Mon, 03 November 2003 18:59 «»
By: Chris R
Re: A few useful documents
Hi Wayne, I found the culprit setup.exe under Docs&Settings/userID/temp.Once I deleted that, the installer actually ran the right setup.exe.I love Windows.... NOT!How does one go about creating a Spice model of their drivers?It seems to be something abou...
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Forum: Pi Speakers «»
Posted on: Sun, 12 October 2003 22:10 «»
By: Wayne Parham
Re: Impedance at resonance and tube amps
I've found some SET amps that don't seem particularly sensitive to load and others that are very sensitive.The issue is that as source impedance is increased, the resulting circuit acts more like one having constant current. This makes the woofer excursio...
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