Caruso Preamp Full Build Service

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gold
Posts: 365
Joined: Tue Apr 28, 2009 12:03 am
Location: Brooklyn

Re: Caruso Preamp Full Build Service

Post: # 53956Unread post gold
Wed Aug 21, 2019 4:25 pm

symatic wrote: if anyone actually knows what theyre on about and would care to enlighten me, that would be awesome.... if not i'll keep trying to suss it out.
Are you in 230VAC land or 120VAC land? If you are in Europe the the two coils that form the Primary should be in series. If you are in the USA then the two coils that form the Primary should be in parallel.

If you have the Primary in series for 230VAC then Grey and Violet should be connected together and also bonded to chassis. If the Primary is in parallel then there is no connection to chassis on the primary.

On the secondary side Red and Orange should be tied together. If the Primary is in series this point should also be tied to chassis or 0V if different than chassis, like the Primary. If the Primary is in Parallel than this point should be tied to 0V/Chassis. 0V should not be left floating.

Don't forget to fuse one or both of the Primary leads. DO NOT ATTEMPT TO POWER IT UP WITHOUT A FUSE.

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symatic
Posts: 241
Joined: Fri Jun 26, 2015 10:41 am

Re: Caruso Preamp Full Build Service

Post: # 53960Unread post symatic
Thu Aug 22, 2019 9:43 am

Thanks for al the suggestions guys!

I'm still a bit unsure though - seems like there might be differnet standards for these things... although my wiring is very similar to Opcodes. however I'm on UK power so 220V at 50hz

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gold
Posts: 365
Joined: Tue Apr 28, 2009 12:03 am
Location: Brooklyn

Re: Caruso Preamp Full Build Service

Post: # 53963Unread post gold
Thu Aug 22, 2019 2:15 pm

If you are unsure then you should find someone to help you. Mains wiring can kill you. It's nothing to play around with or have done improperly.

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Radardoug
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Location: New Zealand
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Re: Caruso Preamp Full Build Service

Post: # 53976Unread post Radardoug
Fri Aug 23, 2019 5:20 pm

Quote by Gold
If you have the Primary in series for 230VAC then Grey and Violet should be connected together and also bonded to chassis. If the Primary is in parallel then there is no connection to chassis on the primary.
Are you talking about the two primary wires? Then NOOOOO!!!! You do not earth anything on the primary!!!

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gold
Posts: 365
Joined: Tue Apr 28, 2009 12:03 am
Location: Brooklyn

Re: Caruso Preamp Full Build Service

Post: # 53982Unread post gold
Mon Aug 26, 2019 12:04 pm

Radardoug wrote: Then NOOOOO!!!! You do not earth anything on the primary!!!
I was thinking of US domestic 220vac which is two 120VAC 180º out of phase with Ground in the middle. Free balanced power.

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symatic
Posts: 241
Joined: Fri Jun 26, 2015 10:41 am

Re: Caruso Preamp Full Build Service

Post: # 53986Unread post symatic
Tue Aug 27, 2019 10:27 am

gold wrote:
Radardoug wrote: Then NOOOOO!!!! You do not earth anything on the primary!!!
I was thinking of US domestic 220vac which is two 120VAC 180º out of phase with Ground in the middle. Free balanced power.

i'm on UK power

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