Siren Capacitor Value [message #14740] |
Sat, 27 November 2010 12:23 |
toadsoup-1
Messages: 9 Registered: November 2010
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Junior Member |
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I am putting my 1969 Gold Double bottom 2-15" Guitar amp back to original configuration, with the 15" Sirens. What I need to know is what value capacitor was used for the crossover? Thanks,
Marty
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Re: Siren Capacitor Value [message #14758 is a reply to message #14749] |
Mon, 29 November 2010 13:07 |
C4ster
Messages: 686 Registered: June 2001 Location: Mukwonago, WI (Milwaukee...
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Senior Member |
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I know my siren's had 4uF caps in there also. I calculated the crossover frequency at closer to 800 Hz for the 10uF Someone probably was looking to add more mids to the sound by crossing to the horn sooner. I would think that would just make it tinny sounding. I think I would add a pad to the highs and hide the shaft somewhere and make the level adjustable.
Conrad
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Re: Siren Capacitor Value [message #14763 is a reply to message #14740] |
Mon, 29 November 2010 16:41 |
Bill
Messages: 64 Registered: March 2002 Location: Kansas
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My Frankie was original, never even had the back off, according to the shape of the screws. It had a 10 uF cap in it for the crossover.
Thrill Bill C
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Re: Siren Capacitor Value [message #14818 is a reply to message #14743] |
Sun, 05 December 2010 11:56 |
cassent5150
Messages: 341 Registered: August 2009
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Senior Member |
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I was wondering about the same thing. I have a couple of 3X15 cabs with the horns removed and I want to put them back in. My problem is, how is the cap installed. Across positive to negative on the driver or is it just in the positive wire? Steve C
Steve C
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Re: Siren Capacitor Value [message #14955 is a reply to message #14822] |
Sun, 26 December 2010 21:19 |
pleat
Messages: 1454 Registered: June 2004 Location: Belding, Mi
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Senior Member |
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I've been doing some research on the values of the caps used. There are two, a 4 mfd and a 10mfd.
The 4 mfd was used on the cabinets that also contailed 16 ohm speakers such as the siren 3x15 cabinets and crossed at about 2500 Hz. The newer 215+H cabs that were designed for guitars used the 10mfd with the 8 ohm speakers and crossed at about 2K Hz.
As far as I can tell the larger 215+H cabs that were used for PA has 16 ohm speakers and used the 4 MFD caps.
pleat
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