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    Higher filer cap effect on Mk3

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    bubbasweet

    Posts : 53
    Join date : 2016-03-14

    Higher filer cap effect on Mk3

    Post by bubbasweet on Fri Jul 22, 2016 10:29 am

    Does using one of the new 30, 80, 40 20 Can Caps cause any different to volages or strain on the amp. I know they say to put the 80uF after the choke and 30 after the GZ34. Just wondered if these higher values do anything to the voltages or put any extra strain on the power transformer or rectifier?

    Bob Latino
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    Posts : 2411
    Join date : 2008-11-26
    Location : Massachusetts

    Re: Higher filer cap effect on Mk3

    Post by Bob Latino on Fri Jul 22, 2016 11:18 am

    bubbasweet wrote:Does using one of the new 30, 80, 40 20 Can Caps cause any different to volages or strain on the amp. I know they say to put the 80uF after the choke and 30 after the GZ34. Just wondered if these higher values do anything to the voltages or put any extra strain on the power transformer or rectifier?

    About the only changes you may find is that the amps will play better at higher volume levels and you may notice a little more bass out of your amps.

    Bob

    bubbasweet

    Posts : 53
    Join date : 2016-03-14

    Re: Higher filer cap effect on Mk3

    Post by bubbasweet on Wed Aug 03, 2016 3:24 pm

    I got these Authenticap caps today. 80 40 30 20

    So how is it? 40 550V first at GZ34 on other side of choke 80 550V then? 20 550V and 30 525 last stage?

    THX


    Last edited by bubbasweet on Wed Aug 03, 2016 3:36 pm; edited 1 time in total

    Bob Latino
    Admin

    Posts : 2411
    Join date : 2008-11-26
    Location : Massachusetts

    Re: Higher filer cap effect on Mk3

    Post by Bob Latino on Wed Aug 03, 2016 3:35 pm

    bubbasweet wrote:I got these Authenticap caps today. 80 40 30 20

    So how is it? 40 first at GZ34 on other side of choke 80 then? 30 and 20 go 3rd and last stage?

    THX

    Yes - what you have mentioned above is correct ...

    Bob

    bubbasweet

    Posts : 53
    Join date : 2016-03-14

    Re: Higher filer cap effect on Mk3

    Post by bubbasweet on Wed Aug 03, 2016 3:38 pm

    Last stage should be the lowest voltage 30uF @ 525 right at bottom of pin7 or grid of 6an8?

    bubbasweet

    Posts : 53
    Join date : 2016-03-14

    Re: Higher filer cap effect on Mk3

    Post by bubbasweet on Thu Aug 04, 2016 1:33 am

    Well swapped them out. Sounded fine before and sound fine now. I guess it is piece of mind. I would say slightly less hum but almost zero.. Thanx for all your help.

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