Speaker Question

I have a 2304 Hi Fi Juke. The 2 bass speakers are blown. I want to replace
them, but looking at my book in the hi fi section, both are 16 ohm, in the
stereo section one is a 8 ohm and the other is a 16 ohm. on both sections
the 7 inch is a 3.5 ohm. In figuring ohms, what impedance do I not want to
exceed. I figure it's a 8 ohm amp. in different configurations of series and
parrell circuits I can come up with everything from 5.6 to over 8 ohms. My
question is this, is it better on a tube amp to be below or above the goal
mark of 8 ohms and if so, how much below or above is acceptable. Thanks in
advance.

C.G.

C. G.:

There are two considerations, distortion and damage to the amp. Any deviation in either direction from intended
impedance match increases distortion, but sometimes it is very tiny. Depends on the amp. Tube type amps are more
likely to be damaged by over voltage from too high load impedance, but unless you run the volume wide open, and the
mismatch is 2:1 or greater, that is probably unlikely also. The unknown here is the crossover networks if any. They
are impedance sensitive, and the crossover point will move with different load impedances, but again, maybe not enough
to tell, but a consideration, never the less.

--
Crazy George
Remove N O and S P A M imbedded in return address
"DesotoFireflite" wrote in message ...
I have a 2304 Hi Fi Juke. The 2 bass speakers are blown. I want to replace
them, but looking at my book in the hi fi section, both are 16 ohm, in the
stereo section one is a 8 ohm and the other is a 16 ohm. on both sections
the 7 inch is a 3.5 ohm. In figuring ohms, what impedance do I not want to
exceed. I figure it's a 8 ohm amp. in different configurations of series and
parrell circuits I can come up with everything from 5.6 to over 8 ohms. My
question is this, is it better on a tube amp to be below or above the goal
mark of 8 ohms and if so, how much below or above is acceptable. Thanks in
advance.

C.G.

It's an 8 ohm load amp. The 7in tweeter has a 4 mfd cap for crossover, then
there are 2 12inch bass speakers. The 2304 came in 2 flavors, one stereo and
the other hifi. I have the hifi model. The specs for the hifi are all 3
speakers in parallel the ohm impedances are 3.5 ohms for the 7inch speaker
and 16 ohms for the 2 12inch speakers which would be a total impedance load
of 2.435 ohms. In the stereo specs, the speakers are the same part numbers,
but listed as one 12 as 8ohm, the other 12 as a 16ohm and the 7 as 3.5 ohm.
If I apply the same all parallel theme to this, I get 2.113 total ohms. If I
blow this all away and wire the speakers as 16+3.5 in series=19.5 and the
other as 16ohm and wire both combos in parallel, I get 8.789 total ohm load.
Then if I assume one of the 12's is a 8ohm like in the stereo model, I could
go 8+3.5=11=5 the other as 16 ohm imp parallel would = 6.691 or go
16+3.5=19.5 then parallel the 8 to = 5.673. Now that you see where I am
going with this, what would be the best scenario. Thanks for your help.

"Crazy George" wrote in message
...
C. G.:

There are two considerations, distortion and damage to the amp. Any
deviation in either direction from intended
impedance match increases distortion, but sometimes it is very tiny.
Depends on the amp. Tube type amps are more
likely to be damaged by over voltage from too high load impedance, but
unless you run the volume wide open, and the
mismatch is 2:1 or greater, that is probably unlikely also. The unknown
here is the crossover networks if any. They
are impedance sensitive, and the crossover point will move with different
load impedances, but again, maybe not enough
to tell, but a consideration, never the less.

--
Crazy George
Remove N O and S P A M imbedded in return address
"DesotoFireflite" wrote in message
...
I have a 2304 Hi Fi Juke. The 2 bass speakers are blown. I want to
replace
them, but looking at my book in the hi fi section, both are 16 ohm, in
the
stereo section one is a 8 ohm and the other is a 16 ohm. on both sections
the 7 inch is a 3.5 ohm. In figuring ohms, what impedance do I not want
to
exceed. I figure it's a 8 ohm amp. in different configurations of series
and
parrell circuits I can come up with everything from 5.6 to over 8 ohms.
My
question is this, is it better on a tube amp to be below or above the
goal
mark of 8 ohms and if so, how much below or above is acceptable. Thanks
in
advance.

C.G.