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Concert Kasino CON-L SS guitar amp [message #22689]

Sun, 22 March 2015 01:38

scottpinkey@comcast.net is currently offline

scottpinkey@comcast.net
Messages: 4
Registered: March 2015

Junior Member

Hello, I have an early 70's Concert Kasino, model: CON-L guitar amp ( my very first amp over 40 years ago! ) in amazing perfect working order except for the spring reverb, It's in the shop and I am helping the tech to try and locate a schematic for the amp or reverb unit so I can get back to jammin with this thing again! Any help would be greatly appreciated, thank you for your time and have a great day.

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Re: Concert Kasino CON-L SS guitar amp [message #22691 is a reply to message #22689]

Sun, 22 March 2015 07:51

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

Hello and welcome to our obsession!
Your amp schematic can be found in this sites technicle section on our main page.
Your amps listing has three schematics and the reverb circuit board is a PC803 which along with the other boards in your amp is used in a ton of other Kustom amps from mid 1968 to mid or late 1970.
The reverb pans for these amps are getting hard to come by these days, and note that some new ones that will work do not sound the same!
The original part number for the reverb pan you nee's is a 4FB3A1B.
Here are the specs that your tech will need to know to get you a matching new pan.
Input impedance is 1475, and resistance check will read about 185 ohms.
Output impedance 2250 with a resistance check of about 200 ohms.
Both of these rca jacks on the pan are grounded.
The tank is a long decay type, but a medium will work good also.
The tank is made for horizontal mounting.
You or the tech can find these specs for the Accutronics reverb tanks at the AES supply site.

If you want to retain the amps orignal tank and its transucer coils are not open and resistance test good I can repair the tank for you even if the springs are busted in the center, or as is the case most times broken off at the transducer end"

[Updated on: Sun, 22 March 2015 07:53]

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Re: Concert Kasino CON-L SS guitar amp [message #22692 is a reply to message #22691]

Sun, 22 March 2015 08:57

pleat
Messages: 1452
Registered: June 2004
Location: Belding, Mi

Senior Member

Stevenm he has the Kasino Concert Lead head, not the Kasino Concert PA head. His amp is the same as the Kustom Lead III. Kasino blue control panel mid 70 era.

pleat

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Re: Concert Kasino CON-L SS guitar amp [message #22693 is a reply to message #22689]

Sun, 22 March 2015 10:20

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

Sorry about that!
I would then need to know the PC board number that the reverb pan connects to, or if the input side of the pan is drivin by a IC chip then the replacement pan needed would be a metal face K250 pan with a input resistance of only about 57 ohms and no ground on that input pan RCA Jack.

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Re: Concert Kasino CON-L SS guitar amp [message #22694 is a reply to message #22693]

Sun, 22 March 2015 15:14

scottpinkey@comcast.net
Messages: 4
Registered: March 2015

Junior Member

Thanks a lot guy's, I will pass on the information to the tech, I believe the tank may be good because you can bang the amp and get that spring reverb boom sound to come from it so it could be something else but I'm not a tech so not sure, I will see what the tech says and thanks again for the great information and quick response! Cant wait to rock his baby again, gonna shove the Mesa's in the corner for a while when I get this one home!

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Re: Concert Kasino CON-L SS guitar amp [message #22695 is a reply to message #22689]

Mon, 23 March 2015 06:15

stevem
Messages: 4733
Registered: June 2004
Location: NY

Senior Member

Being able to still hear the tank crash is a good sign as that means that the output side of that tank is working and the recovery amp side of the whole reverb circuit is working!
If you are a tad lucky your tech will find that the issue is just that one of the very fragile wires on the RCA input Jack have broken off as they due all too often.
If this is the case provide your tech with a a tube of silicone sealer and have him place a dab on all four wires on both RCA jacks so the do fail and brake off due to vibration again.
If he has a hot glue gun then that will work fine also!

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