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94 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Mon, 20 January 2003 12:25 «»
By: Wayne Parham
Re: Impedance curves for Eminence Woofers?
Eminence offers three details that describe their impedance curves: Zmax, Re and Le. These allow you to plot a fairly accurate representation of the impedance of their woofers in free air.
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Forum: Pi Speakers «»
Posted on: Wed, 04 December 2002 22:28 «»
By: Wayne Parham
Tube friendly JBL's
I know that you've been through the archives for information on the subject, and have participated on many of the threads therein. But in order to make it easy for others interested in this issue, I suggest that the collection of posts about "tube friendl...
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Forum: Pi Speakers «»
Posted on: Wed, 04 December 2002 18:42 «»
By: jlharden
Re: JBL 4648A with SET's?
Hi Wayne!If I recall the Zmax of the 2226H was around 55 ohms, assuming two 2226J's are electrically very similar, the impedance at resonance shouldn't be an issue. The increased sensitivity is always a plus. I don't understand how two drivers offer greate...
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Forum: Pi Speakers «»
Posted on: Thu, 21 November 2002 23:23 «»
By: Wayne Parham
Re: SET's and 16 ohm JBL 2226J's- - - - - - Observations
The Zmax figure of 50 ohms commonly mentioned is actually pretty low. That's good, because it means load impedance doesn't fluctuate very much. It's not uncommon to see speakers with a peak impedance over 150 ohms. Cabinet tuning and configuration mod...
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Forum: Pi Speakers «»
Posted on: Thu, 21 November 2002 05:21 «»
By: spkrman57
Re: SET's and 16 ohm JBL 2226J's- - - - - - Observations
Bill, I'm not sure if you are agreeing with me or not with your post. Please explain what you are trying to say. I am not engineering degree'd or anything like that, just been doing this for almost 40 years with limited electronics background, mostly wit...
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Forum: Pi Speakers «»
Posted on: Tue, 12 November 2002 13:30 «»
By: Wayne Parham
Distortion behavior, signal-to-noise and output impedance
You're right about the Zmax thing being a big determiner of speaker performance on tube amps, particularly the small signal SET's with large output impedance. And you're also right that the filters used interact with this output impedance - It's like putt...
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Forum: Pi Speakers «»
Posted on: Sun, 10 November 2002 06:51 «»
By: LuxmanLover
4pi Pro & Tubes
As previously posted I had the opportunity to hear what all the "tube buzz" (no pun intended) was alll about. I won't reiterate the whole experience but there is magic in the tube sound in the right combo. Unfortuately the big motor in the 2226 based 4Pi p...
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Forum: Pi Speakers «»
Posted on: Thu, 17 October 2002 15:49 «»
By: LuxmanLover
4Pi Theatre vs 4Pi Pro
What is the difference between the 4Pi theatre and Pro in terms of tubability. Both systems use high effiency drivers with low Zmax and yet I've read many times on this forum that the theatre would work out better on a tube amp? What am I mising here (spea...
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Forum: Pi Speakers «»
Posted on: Tue, 24 September 2002 02:29 «»
By: Wayne Parham
Re: New fun things!
To me, the biggest difference between the two π speakers and the four π or seven π models is the size of the premium listening spot. Almost as big an issue is the clarity and detail, which are naturally better on the top-of-the-line models.Two &p...
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Forum: Pi Speakers «»
Posted on: Fri, 16 August 2002 13:37 «»
By: Wayne Parham
Re: ZMAX - Maximum impedance, impedance at resonance
There was an earlier discussion about something like this. Check the thread called "piAlign software and figuring Zmax".
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