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Need help: early 70s Fender 400ps?

Discussion in 'Amps and Cabs [BG]' started by shortbuscubed, Nov 19, 2005.

  1. Nov 19, 2005 #1
    shortbuscubed

    shortbuscubed

    Aug 11, 2005
    never really heard anything on this supposed svt rival. wondering if anyone can help me out with some info, if its a quality head for loud rock music. i would be using it with an svt 810e. found on craigslist for 550, any insight would help me out a lot!
    thanks.
     
  2. Nov 19, 2005 #2
    The 0x

    The 0x

    Aug 24, 2003
    Timonium, MD
    It needs three cabs to get the full 435+ watts out of it. Since the 810 is split into two chambers, you MIGHT be able to use 2/3s of the amp's power.
     
  3. Nov 19, 2005 #3
    Fealach

    Fealach Guest

    Apr 23, 2003
    Gone to a better place
    I ran mine with 2 Peavey 1820s (18 + 2 10s in each cab) plus 2 Bergantino subs. I'd say it was loud enough all right. The problem is getting 3 4 ohm loads in a smaller package. I don't know what's in the cab you mention for speakers, but you are looking at at least a rewiring job in the cab, maybe needing to put in new jacks, maybe new speakers to get 3 4 ohm loads out of it. I've read the amp can be run with less that 3 4 ohm loads at less power, but also read that the amp will explode and take most of the galaxy with it if you use anything other than 3 4 ohm loads. There seems to be as much superstition as information about the amp.

    I never ran mine with less than the 3 loads. I'm in the process of modifying an Ampeg Isovent cabinet to run at 2 4 ohm loads, so that small cab plus another small cab will be 3. It's a ridiculously powerful amp, but challenging to own. There's some info here,

    http://www.timeelect.com/400-PS-IDX.htm

    and also on the Yahoo group. I came across one guy wanting to sell his after putting $1000 and a year of waiting into it just to get it set up. Not for the faint of heart.