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Capacitor found in Kustom 200A Guitar Amp Cabinet [message #28055] Wed, 24 February 2021 18:18 Go to next message
ampguy is currently offline  ampguy
Messages: 13
Registered: October 2008
Junior Member
Here's a question for the Kustom Amp experts: I have a 1969 Kustom 200A Guitar Amp with 15 " Jensens. I realized recently that one of the 15 inch speakers was not functioning. When I opened up the amp, I found that mice had gotten into the amplifier during the ownership of the previous owner and chewed through two of the wires going to the coil of one of the speakers. So I had the wires re-soldered at a speaker shop. Can anyone tell me what the capacitor that is attached to the cabinet was used for and whether it's necessary to be hooked up? It was not hooked up when I opened the cabinet, but I figure there's a purpose for it. It appears to be original to the cabinet.

AMPGUY
Re: Capacitor found in Kustom 200A Guitar Amp Cabinet [message #28056 is a reply to message #28055] Thu, 25 February 2021 05:55 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4392
Registered: June 2004
Location: NY
Senior Member
Which did the Mice get into both the amp and the cabinet, or just the amp as you discription is not clear?

Also was this cap you speak of found loose on the bottom of the speaker cabinet , or hanging off of one terminal of a speaker?

One more question, what does the jack plate at the bottom of the cabinet say on it?
Re: Capacitor found in Kustom 200A Guitar Amp Cabinet [message #28058 is a reply to message #28056] Thu, 25 February 2021 12:06 Go to previous messageGo to next message
pleat is currently offline  pleat
Messages: 1421
Registered: June 2004
Location: Belding, Mi
Senior Member
It sounds like your cabinet was shipped from the factory with the 15" siren horn that would have either the 4MFD or 10MFD crossover capacitor to filter out low frequencies from the horn. Some one replaced the siren horn for the 15" speaker to make it a 2x15 speaker cabinet. I would suggest you check both speakers and check to see that both speakers are 16 ohms each and wired in parallel for a total of 8 ohms to the amp. The K200 series amps want to see a total of 4 ohms for the 100 watts RMS.

The original speaker should be Jensen P15 16 ohms.

pleat
Re: Capacitor found in Kustom 200A Guitar Amp Cabinet [message #28059 is a reply to message #28055] Fri, 26 February 2021 06:03 Go to previous messageGo to next message
stevem is currently offline  stevem
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Registered: June 2004
Location: NY
Senior Member
I am pretty sure that if it where a siren cabinet originally that the 15 in speakers would be a gold / black label Jensen C15L model driver.
Re: Capacitor found in Kustom 200A Guitar Amp Cabinet [message #28060 is a reply to message #28056] Fri, 26 February 2021 09:54 Go to previous messageGo to next message
ampguy is currently offline  ampguy
Messages: 13
Registered: October 2008
Junior Member
The mice made a nest in the bottom of the amp. I removed the fluff pile and pulled the top speaker for repair and took it to a shop. They noticed droppings in between the cone and the frame and that the wires had been chewed. This was repaired and the speaker sounds great.

The capacitor was attached with a plate between the speakers on the cabinet. It was not hooked up when I opened the cab to address the dead speaker issue. It is still not hooked up. I could attach a picture, but can't find a way to do it.


AMPGUY
Re: Capacitor found in Kustom 200A Guitar Amp Cabinet [message #28061 is a reply to message #28058] Fri, 26 February 2021 09:57 Go to previous messageGo to next message
ampguy is currently offline  ampguy
Messages: 13
Registered: October 2008
Junior Member
Both speakers are 16 ohm, and made a few weeks apart. I think that they are original to the amp. They are wired in parallel for an 8ohm total load.

AMPGUY
Re: Capacitor found in Kustom 200A Guitar Amp Cabinet [message #28062 is a reply to message #28059] Fri, 26 February 2021 10:01 Go to previous messageGo to next message
ampguy is currently offline  ampguy
Messages: 13
Registered: October 2008
Junior Member
Both speakers are gold and brown labeled Jensens made a few weeks apart and ore C15Ls.I was thinking that Kustom only used the horns in the 3 speaker cabinets, (two being speakers with a horn)

AMPGUY
Re: Capacitor found in Kustom 200A Guitar Amp Cabinet [message #28063 is a reply to message #28055] Fri, 26 February 2021 11:45 Go to previous message
stevem is currently offline  stevem
Messages: 4392
Registered: June 2004
Location: NY
Senior Member
Nope! Those tall cabinets could be had for Bass usage with CTS. altec or JBL drivers, or for guitar with 3 of the C15L drivers or for keyboards and PA usage with a siren Round horn and whatever driver up grades you want.

Once late 1970 came about these cabinets where no longer tapered top to bottom and they came fitted with a Altec cast Aluminum sectoral horn and a Altec driver opposed to the a university driver used on the siren set up.

You could even get a cabinet with 2-15s and 2-10" drivers or a rare 3-12" cabinet.

You should go look at this site's literature section.

A original 3-15" cabinet would have had all the 16 ohm driver wired in parallel for a 5.3 ohm total load and inturn some 28 more watts of clean power.

[Updated on: Fri, 26 February 2021 11:48]

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