New Build: Ceriatone Replica OTS 50W
Moderators: pompeiisneaks, Colossal
Re: New Build: Ceriatone Replica OTS 50W
Charlie,
Found this 124 schematic. Any thoughts?
Found this 124 schematic. Any thoughts?
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Re: New Build: Ceriatone Replica OTS 50W
You could use a JTM45 PT as it has the same mounting centers as a Fender Twin. Then power the relays from the 5V rectifier tap and then change the 7812 to an 7809 and use 5V relays.
http://www.classictone.net/40-18033.pdf
Off the top of my head I'm thinking the only caveat verses the heavier HT rating of a BF Bassman PT would be a bit more sag when the amp is driven hard.
TM
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Re: New Build: Ceriatone Replica OTS 50W
Dave, there you go, TM solved your transformer issue. That schematic will work. It is for a low plate Skyliner. Yours is going to be a high plate, so instead of 100k plate load/1.5k cathode, you will have 220k/3.3k and 150k/2.2k. Your od trimmer will be 100k instead of 346k and od drive will be 100k instead of 250k. Also it wouldn't take much to tweek your circuit to a Robben Ford 102.
CW
CW
Re: New Build: Ceriatone Replica OTS 50W
Thanks to TM and Charlie.
Charlie, Robben Ford is what I am after. Any help getting me there would be VERY much appreciated.
Charlie, Robben Ford is what I am after. Any help getting me there would be VERY much appreciated.
Re: New Build: Ceriatone Replica OTS 50W
Mike has been selling boards, loaded or unloaded and chassis for years and faceplates.
Mike has also been building/selling complete Overlord OTS amps for years so he should certainly know what transformers to use in his chassis.
Most either go custom PT to get the proper relay power taps in that 50w PT.
Mike has also been building/selling complete Overlord OTS amps for years so he should certainly know what transformers to use in his chassis.
Most either go custom PT to get the proper relay power taps in that 50w PT.
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Re: New Build: Ceriatone Replica OTS 50W
Dave, Robben Ford's amp is a high plate Skyliner. I would build your amp per your layout first, it should have a Robben Fordish sound to it. Then if you want to tweek it to 102, compare your layout to the 102 layout in the file section. You only have to change a couple components. One note, if you go with TM's suggestion, you may have to use 5v relays.
CW
CW
Re: New Build: Ceriatone Replica OTS 50W
Here ya go:
http://www.ebay.com/itm/Radioshack-12-V ... Sw4GVYLe2Q
http://www.classictone.net/Fender-Blond ... rmers.html
Ceritone trannies are weak
http://www.ebay.com/itm/Radioshack-12-V ... Sw4GVYLe2Q
http://www.classictone.net/Fender-Blond ... rmers.html
Ceritone trannies are weak
Eric
1949 Zenith, Zenith Toggle Recoil, Zenith 55 & 440
1949 Zenith, Zenith Toggle Recoil, Zenith 55 & 440
Re: New Build: Ceriatone Replica OTS 50W
Kit is out of the box and on the bench!
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Re: New Build: Ceriatone Replica OTS 50W
Actually Radio Shack still sells electronics bits and pieces just like always. Problem now is finding a Radio Shack store...
Re: New Build: Ceriatone Replica OTS 50W
Mike started selling the Ceriatone chassis with Dumble plates last year.
Re: New Build: Ceriatone Replica OTS 50W
For those wanting to build a low powered version 30w or so the Ceriatone Dizzy 30 PT fits perfect in this chassis.
285-0-285V 200mA
3.15-0-3.15V 5A
5-0V 4A
285-0-285V 200mA
3.15-0-3.15V 5A
5-0V 4A
Re: New Build: Ceriatone Replica OTS 50W
Did a test fitting. Everything seems to have a home
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Re: New Build: Ceriatone Replica OTS 50W
Dave, did he send you some coaxial?
CW
CW
Re: New Build: Ceriatone Replica OTS 50W
Charlie,
Short answer, no.
Long answer
Mike at Marsh sent whatever I asked for. There was no BOM and all I have had to work off from the beginning is the layout at the beginning of this thread.
So, I am doing the best I can to build the BOM myself and I am sure I have missed things I need. Here are some things I am unsure of if you can help.
1. It looks like all the mini switches are DPDT even though they don't necessarily need DPDT (for ex, I think the Mid could have used SPST).
2. Getting the right component for the 5 pin jack foot switch
3. Sourcing the relays and Regulators especially if I change to 5V as suggested with the JTM45 PT
4. Sourcing components or finding a off the shelf generic foot switch.
5. Sourcing proper component for the Half Power switch.
Dave
Short answer, no.
Long answer
Mike at Marsh sent whatever I asked for. There was no BOM and all I have had to work off from the beginning is the layout at the beginning of this thread.
So, I am doing the best I can to build the BOM myself and I am sure I have missed things I need. Here are some things I am unsure of if you can help.
1. It looks like all the mini switches are DPDT even though they don't necessarily need DPDT (for ex, I think the Mid could have used SPST).
2. Getting the right component for the 5 pin jack foot switch
3. Sourcing the relays and Regulators especially if I change to 5V as suggested with the JTM45 PT
4. Sourcing components or finding a off the shelf generic foot switch.
5. Sourcing proper component for the Half Power switch.
Dave