Got my heart set on a Bandmaster. Output is 4 Ohms. I've got a nice cab rated at 8 Ohms (2 x 16 Ohm speakers in parallel... or series... I can't remember).
So, if I were to use a Bandmaster with the 8 Ohm cab, what would happen?
will anything bad happen... Ohms-centric
Moderated By: mods
Re: will anything bad happen... Ohms-centric
I think u should be good!timhulio wrote:Got my heart set on a Bandmaster. Output is 4 Ohms. I've got a nice cab rated at 8 Ohms (2 x 16 Ohm speakers in parallel... or series... I can't remember).
So, if I were to use a Bandmaster with the 8 Ohm cab, what would happen?
No, because your amp puts put 4 ohms and your speaker can handle 8 ohms, if you were to send a load bigger than what the speaker can handle then u'd probably fuck up the tranny thats how i understand it works.timhulio wrote:I am good... but will anything bad happen to my output transformer?
MIKE??? MIKE?
Mike's the Minister of Impedance.Mike wrote:Most people do this just fine with Fender amps, the transformers are well engineered enough to cope with the mismatch.timhulio wrote:I am good... but will anything bad happen to my output transformer?
MIKE??? MIKE?
Have fun. I love Bandmasters.
To throw a little more in about what size of mismatch he's talking about: word is that with Fenders, obviously a spot-on match is best, but a 2:1 mismatch in either direction is likely to be just fine. So for a 4-ohm amp, that would be down to 4/2 = 2 ohms, or up to 4x2 = 8 ohms. For some reason, the thought of going low makes me nervous. Maybe it's that 2 ohms seems like almost no ohms at all. 
You had it right the first time, two 16-ohm speakers in parallel = 8 ohms. Two 4-ohm speakers in series will also give you 8 ohms.
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timhulio
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Ah that's great news. Thanks guys. This probably won't be for long anyway- I've got another 8 Ohm Celestion century vintage back in London, so it's not inconceivable that I could get another 8 Ohm speaker, wire them in parallel and with a switch for 4 Ohms (both speakers) and 8 Ohm (just one). That way I could still use the Tiny Terror sometimes. Yay.
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Mike
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Sounds like a plan. Definitely wouldn't recommend running the TT with other than an 8 or 16 ohm load, but the Bandmaster will be fine. You won't get full output as the mismatch means you're not 100% efficient but I'm sure it won't be noticeable, or a problem.timhulio wrote:Ah that's great news. Thanks guys. This probably won't be for long anyway- I've got another 8 Ohm Celestion century vintage back in London, so it's not inconceivable that I could get another 8 Ohm speaker, wire them in parallel and with a switch for 4 Ohms (both speakers) and 8 Ohm (just one). That way I could still use the Tiny Terror sometimes. Yay.