Vintage speaker power handling

Discussion in 'DIY Amp Forum' started by JustABluesGuy, Mar 30, 2017.

  1. JustABluesGuy

    JustABluesGuy Senior Stratmaster

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    IMG_1605.JPG IMG_1607.JPG I recently bought two 1973 vintage Kasino (Kustom) 2x10 PA cabs for use as guitar cabs. There is very little information available about them online however.

    As far as I can tell they were originally sold with the Kasino Club PA systems rated at either 100 or 200 watts. The drivers are CTS, with square ceramic magnets.

    Assuming these came with the 100watt PA (just to be safe) I would assume they were originally rated for at least 25 watts for each of the drivers.

    Most combo amps seem to come with speakers that are rated for a good bit more than their amps are.

    Anyone have any idea how many watts I can safely try and push through these cabs? The speakers themselves appear to be in excellent condition with no tears, or dry rot. They sound great, but I haven't really pushed them too hard out of fear. They are pretty old after all.

    I'm not sure if I can even replace these drivers if I blow one. I haven't seen any online yet. Does anyone have any info about these?
     
  2. mad axe man

    mad axe man Senior Stratmaster

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    what is your amp watts
     
  3. gibsonsmu

    gibsonsmu Senior Stratmaster

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    It's some sort of CTS alnico built in mid 73- 25 watts is probably a safe assumption but I might go with 20 to be safe. Double your RMS is rule of thumb
     
  4. sumran

    sumran Fan of Leo

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    They are ceramic magnet. CTS and Eminence made a lot of those. 25 is the safe assumption but they are probably 40w in that date and application. Given age and mileage I would assume 25w.

    They were used in lots of guitar amps including Fenders. Good ones sound sweet. They are like Oxfords and Utahs. You never know until you try them.
     
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  5. JustABluesGuy

    JustABluesGuy Senior Stratmaster

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    Sorry about the delayed response! I forgot to "watch" my own thread!

    I have a variety of amps ranging from 100 watts down to 2 watts. So far I am treating the drivers as handling 7 to 15 max to be safe.