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π Speakers Product Line and Driver Complements


Description of Models
The one π through four π are bass reflex designs with 8", 10", 12", and 15" midwoofers respectively.
The five π through seven π are corner horn designs with 10", 12", and 15" woofers respectively.
The eight π is a reflex-horn, using a 10" midwoofer, front-loaded with a horn and rear loaded with a reflex chamber.
The three π subwoofer uses a 12" woofer in a bass-reflex cabinet tuned to 20Hz.
The 12 π is basshorn subwoofer using two 12" woofers with external heat sinks and push-pull drive.


Driver Complements
System
Woofer
Tweeter
one π bass reflex Eminence Alpha 8 Vifa DX25
two π bass reflex Eminence Alpha 10 Vifa DX25
two π tower bass reflex Eminence Alpha 10 Vifa DX25
three π bass reflex Eminence Delta 12LF
    -or-
Eminence Definimax 4012HO
Eminence PSD2002
    -or-
B&C DE250
four π bass reflex Eminence Omega 15
    -or-
JBL 2226
Eminence PSD2002
    -or-
B&C DE250
System
Woofer
Midrange
Tweeter
six π corner horn Eminence Delta 12LF
    -or-
Eminence Definimax 4012HO
Eminence Delta 10 Eminence PSD2002
    -or-
B&C DE250
seven π corner horn Eminence Omega 15
    -or-
JBL 2226
Eminence Delta 10 Eminence PSD2002
    -or-
B&C DE250
System
Woofer
Tweeter
eight π reflex horn Eminence Alpha 10 Eminence PSD2002
    -or-
B&C DE250

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Helpful Documents and Software

π Speaker Whitepaper explains the concepts and evolution of modern waveguide and constant directivity loudspeakers
π Speaker Crossover Document analysis of circuits used in waveguide and constant directivity loudspeakers
"Crossover Electronics 101" Seminar Handout
JBL Professional Sound System Design Manual
Passive Crossover Spice models, complete with the AIM Spice modeling program
Pialign Analysis Software to help you design your enclosures. This is the old Altair original from 1977.
Plot the response curve of your design with Carlson's BoxPlot program
Plot the response curve of horns with the HornResp program
Convert Metric and Imperial measurements with the Madison Measurement Converter

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