[HAM] leslie speaker impedance

[Randal Muir]

Hi all.   Further to the speaker impedance discussion,...I have a buzzing HF
driver in my leslie 145 and an 8 ohm HF driver in perfect condition from my
720.  I would like to use the good driver for gigs where a cleaner sound is
prefered so I ran a numerical AC analysis (spice) on the crossover/speaker
network using pure resistive speaker impedances (maybe I should use complex
loads??).  The 8 ohm upper driver pushed the HF cut-off point higher (900 -
1kHz) but left the bass cut-off unaffected...... which makes sense since the
crossover circuit should largely isolate the two parts.  I figure the LF
load impedance would still be 16 ohms but the HF (>900Hz) impedance would be
8 ohms.  Would this be OK since low frequencies account for most of the
power output..... or (a)would the elevated HF current (due to the lower 8
ohm load) in the output transformer and tube circuit still be damaging.....
or (b)am I missing something fundamentally important in my reasoning? ... or
(c) am I FOS and don't know what I'm talking about at all? or  (d) all of a,
b, and c?

What do the wise, experienced members on the list think?..... apart from
getting a 16 ohm replacement driver (involves international freight and
customs, and more money than I can afford right now)

Cheers -Randal

PS. Can I put an 8 ohm resistor in series with the 8 ohm driver to bring the
load to 16 ohms?????