Home » Sponsored » Pi Speakers » Thermonic 3pi substitute?
Thermonic 3pi substitute? [message #34545] Wed, 26 December 2001 09:24 Go to next message
SteveBrown is currently offline  SteveBrown
Messages: 330
Registered: May 2009
Grand Master
I've been exploring speakers for a few months now. I had plans to do a Pi, but have not gotten to it yet. I've been playing with a full range Fostex, very nice. But one of my New Year's projects is to complete a PI Aligned design. Trouble is, I'm not very good at the design stuff. I've run across a couple of very nice vintage 12" Utah speakers with big Alnico magnets. I'm wondering if they'd be suitable in a Thermonic 3pi? A friend measured them for me and the basic data is:
Vas = 233 L
Fs = 25.1hz
Re = 5.93 ohms
Le = 4.12mh
Qms= 3.96
Qes = 0.30
Qts = 0.28
SPL = 97db.
Any thoughts? Would I still be able to use the PSD2002? I don't know the crossover of the PSD in the 3Pi, but I think these will go to 1.5khz, at least.
Re: Thermonic 3pi substitute? [message #34554 is a reply to message #34545] Thu, 27 December 2001 00:24 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18695
Registered: January 2001
Illuminati (33rd Degree)
Best thing is to run PiAlign and see what size and port it recommends for your driver. It may or may not be similar to an existing cabinet design.
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