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94 Search Results Found |
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Forum: Pi Speakers «»
Posted on: Fri, 16 August 2002 12:53 «»
By: Ciscokid
Re: ZMAX - Maximum impedance, impedance at resonance
Thanks Wayne, I was hoping that it would be a matter of taking the THIELE/SMALL parameters and deriving the ZMAX. I notice a lot of speaker manufactures provide those numbers, however; they don't seem to provide the ZMAX. Is there a way to tell from the TH...
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Forum: Pi Speakers «»
Posted on: Thu, 15 August 2002 20:30 «»
By: Wayne Parham
ZMAX - Maximum impedance, impedance at resonance
The maximum impedance of a speaker is found at resonance. You can measure it with a test resistor, an oscilloscope or meter and a signal generator. The test resistor is placed in series with the speaker, and you will measure the voltage divided between t...
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Forum: Pi Speakers «»
Posted on: Thu, 15 August 2002 18:09 «»
By: Ciscokid
ZMAX How ?
Hi, Sorry for such a basic question. However, I did a search on this subject and seemed to not be able to narrow down to specific answer. So here is my question. How do you derive the ZMAX of a speaker? Best regards,ck
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Forum: Pi Speakers «»
Posted on: Thu, 27 June 2002 11:00 «»
By: themilford
Instrument cabinet questions
I know this is a little off topic but I didn't know where else to go.I'm trying to take a high-fi approach to my bass/guitar cabinet. I have a 2x12 cabinet I use primarily for bass guitar. I also use it for guitar in one band. It's a little small 28" x 15"...
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Forum: Pi Speakers «»
Posted on: Mon, 10 June 2002 04:16 «»
By: al
had anyone got cab plans for eminence delta 15's drivers ?
hi i need some plans for compact cabs for delta 15 drivershere the spec. 380mm (15in) 300W Bass Speaker Description:Materials of Construction · Kapton coil former · Polyamide-imide coated copper voice coil · APS ferrite magnet · Pressed steel chassi...
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Forum: Pi Speakers «»
Posted on: Thu, 23 May 2002 11:39 «»
By: Wayne Parham
Advertised and actual motor impedance
Eight ohms is the advertised impedance of all motors used in π Speakers. Advertised impedance is listed on the specifications sheet for each motor on the π Speakers website. But advertised impedance is not a terribly good indicator of the actual im...
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Forum: Pi Speakers «»
Posted on: Mon, 22 April 2002 14:08 «»
By: Wayne Parham
Re: Theater series Four Pi
One thing that is very important for good sound on low-power SET amp is how the woofer acts at resonance. All speakers have an impedance peak when driven at their resonant frequency. This condition is also associated with back-EMF and amplifiers with low...
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Forum: Pi Speakers «»
Posted on: Mon, 08 April 2002 11:53 «»
By: dbeardsl
Re: L-pad on LF driver
I'm not horribly experienced, but I'll take a stab.First, I don't think you'll need to pad it 5db. it MIGHT be 1 or 2db more efficient than 105, but even hornloaded I doubt it would give more than 104 or 5 through the useful range.Anyway, you know more ab...
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Forum: Pi Speakers «»
Posted on: Mon, 11 March 2002 15:47 «»
By: Wayne Parham
Re: Spice revisited
To calculate the equivalent LCR electrical circuit for mechanical resonance, find Zmax, and set the shunt resistance equal to that. Then find inductance and capacitance values equal to the (Zmax) resistance divided by the Q at the resonant frequency.
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Forum: Pi Speakers «»
Posted on: Mon, 11 March 2002 09:55 «»
By: dbeardsl
Kappa 15?
I just got a quote for The Eminence Kappa 15 From www.avatarspeakers.com(cool guy) for $55 a piece.Anybody have any experience with this driver? The response graph shows a missing low end compared to the delta, and it has a way heavier cone, and a much hi...
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