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    need help, audio dimensions modified pas, need any schematic, manual, information..

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    edward webster

    Posts : 1
    Join date : 2015-04-27

    need help, audio dimensions modified pas, need any schematic, manual, information..

    Post by edward webster on Mon Oct 19, 2015 10:31 pm

    recently bought on ebay, audio dimensions modified pas. everything works. after cleaning, especially going over circuit board traces with q tips and lighter fluid, sound dramatically improved. as to caps, theyre all mostly sprague. big orange drops 600v. where do i start with this preamp, it sounds cold and boxy. on my st-70 im using solens. i like them. the p.s electrolytics are huge plus the multisection cap is still used under the selenium rectifier bracket are 2 sprague,similar to originals. so thats 4 caps plus the quad filter cap...............the board caps are a mix of different brands. they are all hard to read. need a schematic or part list or manual if someone has any. again, help prioitizing what to do first......just want a warmer sound, thanks for any info. ED.

    Bob Latino
    Admin

    Posts : 2414
    Join date : 2008-11-26
    Location : Massachusetts

    Re: need help, audio dimensions modified pas, need any schematic, manual, information..

    Post by Bob Latino on Tue Oct 20, 2015 8:51 am

    You can get the original Dynaco PAS preamp manuals from the Tubes4hifi web site at the links below. The PAS-3X just has slightly different tone controls than the PAS-2/3. The PAS-3 is the same as the PAS-2 but has the more modern champagne face plate.

    PAS2/3 manual

    PAS-3X manual

    Also > If you need help with your PAS preamp, I would recommend contacting Holger at Tube Nirvana. Check out his PAS preamp modification page at the link below.

    Tube Nirvana PAS preamp page

    Bob

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