"adding a resistor increase the Qes of the speaker driver and it decreases the SPL to
Using Qes to tune Qts.
An observation using Unibox Software
A change in the voice coil Re does not effect Qts yet really drops Spl
If I raise Qes (driver Re at Fs) the Qts goes up to a very nice .38
and SPL drops by 1 db, mostly in the midrange leaving the bass intact.
Is the driver Re linked to Voice coil Re and Qms
Just changing the Qes is an ideal situation for this Eminence Pro driver. Can I do this ??
Power Applied 50W
Fs 38.2
Re 5.0 Ohm
Qms 7.73
Qes 0.32
Sd 858.0
Vas299.0L
Xmax 5.5mm
SPL at 1 W 1 m 99.1 db
SPL at 2.83 Vrms 1m 101.1 db
Qts 0.307
Effective Qts 0.307
Mms 60.03g
Cms 0.289mm/N
Rms 1.864 Kg/s
Bl 15.00Tm
Ref efficiency, n 5.007%
Applied voltage 15.81 Vrms
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Now with a change to Qes of .40
SPL at 1 W 1 m 98.1 db
SPL at 2.83 Vrms 1m 100.2 db
Qts 0.38
Effective Qts 0.38
Mms 60.03g
Cms 0.289mm/N
Rms 1.864 Kg/s
Bl 13.42Tm
Ref efficiency, n 4.006%
Applied voltage 15.81 Vrms
I can post a jpg of Parameters or SPL plot, just ask TIA