Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: dsones on July 30, 2024, 07:25:48 pm
-
I can't figure out how the volume/channel switching pot works from looking at the schematic or wiring diagram. I'm trying to build a deluxe reverb II clone. What current manufactured pot could be used for the volume/channel switching pot? Thanks
-
Can you post the schematic?
-
I've added an attachment (partslist (1)) with the schematic
-
https://nextgenguitars.ca/products/cts-push-pull-a1m-solid-shaft-pot-aluminum-shaft.html
Likely something like this
-
I've added an attachment (partslist (1)) with the schematic
Is it this one ? 1 meg with SPDT switch.
See Antiques Electronics/ tubesandmore
-
https://nextgenguitars.ca/products/cts-push-pull-a1m-solid-shaft-pot-aluminum-shaft.html
Likely something like this
Not IMO, it is a spst
-
https://www.tubesandmore.com/search/node/1+meg+pots/?categories=Amplifier%2520Parts&categories=1M
-
Could you tell us why you chose to build this particular amp model ?
It's not an easy one, and you don't seem to have much experience.
-
I chose to build this amp because it has reverb, two channels, and is similar in sound to my champ II which I love. I've built about 10 vintage amps (champ, princeton, bassman, mojotone studio one, some of the rob robinette micro amps, etc.) without any problems. The deluxe reverb II has some components I haven't come across before.
-
I chose to build this amp because it has reverb, two channels, and is similar in sound to my champ II which I love. I've built about 10 vintage amps (champ, princeton, bassman, mojotone studio one, some of the rob robinette micro amps, etc.) without any problems. The deluxe reverb II has some components I haven't come across before.
Thank's for the answer.
You have the knowledge to built this amp .
What do you think about the 1 meg pot SPDT I shoe you ?
-
In the parts list it says '1 mj 20% w/spdt switch -- volume/channel select
-
https://el34world.com/charts/Schematics/files/Fender/Fender_deluxereverb_ii.pdf
-
https://el34world.com/charts/Schematics/files/Fender/Fender_deluxereverb_ii.pdf
Volume channel switching schematic ; see answer #4
-
In the parts list it says '1 mj 20% w/spdt switch -- volume/channel select
See schematic. I show you a one will fit
Original part number are never useful.
-
You can use a the DPDT switch
The problem with it is it has a 7mm bushing so it would work fine if you haven't drilled a hole yet, if the mounting hole is already drilled and is for a 3/8 bushing then you will have to get creative.
-
You can use a the DPDT switch
The problem with it is it has a 7mm bushing so it would work fine if you haven't drilled a hole yet, if the mounting hole is already drilled and is for a 3/8 bushing then you will have to get creative.
You are talking about the 1 meg volume with DPDT.
With more search can we found a 3/8 size ?
-
Not IMO, it is a spst
My bad, you are correct.
-
If you'all are talking about the channel switch I believe it is this.
-
https://nextgenguitars.ca/products/cts-push-pull-a1m-solid-shaft-pot-aluminum-shaft.html
Likely something like this
My bad, you are right
Update ; amp need a SPDT not SPST like this one
-
No that won't work for the channel switching. That is a SPST what he needs for the channel switch is a 1M pot with either a SPDT switch or a DPDT switch we talked about above.
Latole you posted the CED/AES page above that has the correct pot w/switch and I mentioned it has a 7mm bushing its the right part if it can be mounted on the chassis.
https://www.tubesandmore.com/products/potentiometer-alpha-1m-audio-7mm-bushing-dpdt-switch (https://www.tubesandmore.com/products/potentiometer-alpha-1m-audio-7mm-bushing-dpdt-switch)
note; CE Distribution, Antique Electronic Supply and TubesandMore are all the same company.
-
Yes, the switch I posted was a SPST switch.
That is not the correct switch. My bad.
https://nextgenguitars.ca/products/cts-push-pull-a1m-solid-shaft-pot-aluminum-shaft.html
Likely something like this
Not IMO, it is a spst
https://nextgenguitars.ca/products/cts-push-pull-a1m-solid-shaft-pot-aluminum-shaft.html
Likely something like this
My bad, you are right
Update ; amp need a SPDT not SPST like this one