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Ampeg B5R, sounds underpowered??

Discussion in 'Amps and Cabs [BG]' started by JohnPativens, Mar 1, 2006.

  1. JohnPativens


    Sep 20, 2005
    Hello there,

    I tried this head today, with my TRB6II and an Ampeg Classic HLF 4ohm cabinet. It definitely sounds underpowered to me. It was like if those 300W@4ohm were so weak! :crying:
    Even at 3/4 of its master and half volume..
    I'm disappointed cause I like its preamp section, but its power amp doesn't seem to supply those 300W.

    I tried a GK400 RB IV last week, and its 180W@8ohm are so much louder according to me.

    Anyone having experience with this head?
  2. afroman

    afroman Supporting Member

    Aug 31, 2000
    Austin, TX
    I've tried numerous Ampeg heads in the past (SVt-4,SVT-3 and SVT-2 Pro) and I've always found them to be underpowered. I've found other less powerful GK, Hartke, SWR much louder compared to hte Ampegs. I dunno if maybe there's something wrong with yours but I know that I've felt the same with all AMpeg heads that I've tried. To bad cause they are very good for some types of sounds.

    I dunno if this is correct so somebody feel free to correct me, but I read somewhere that it's the preamo section of Ampeg amps that has a low gain. The power section is there and I remember reading that the preamp section can be modded to provide better gain for the power part of the amp. Again, feel free to correct me if this is inaccurate.

    I've tried or owned a Hartke 3500 and GK 400RB and 800RB that are around that 300watts @ 4 ohms rating and I've never had to go more than half the volume to get good volume. I used my Hartke 3500 for 3 years with a Peavey TVX410 and played a medium sized club w/o PA and I always played with preamp at 5 and volume at 3-4. That was with a loud as hell drummer, guitarist and singer.

    Keep searching about this. I know there's a lot of people around here that know more about this than I do, but this is my opinion from what i've gone through.

  3. jim primate

    jim primate bass guitarist.

    i had one. weak. 500w @ 2ohms though. might be louder w/ another cab.
  4. JohnPativens


    Sep 20, 2005
    I see...they should do something to develop a good power amp section in those heads, it definitely would be a better product.
  5. Metal Mitch

    Metal Mitch

    Jul 14, 2003
    I think they are... at least their newer products all seem to have more and more power.

    That aside, 300 solid state watts just aint that much. Especially if you use a lot of bass boost on an active bass - all your headroom gets sucked up by EQ with nothing left for volume. Instead of boosting the low EQ, just use more volume to get bigger lows. A mid scoop will also make it sound like you have more bass without boosting the lows. Just be careful not to use too much scoop or it will kill your volume too.
  6. JohnPativens


    Sep 20, 2005
    I thought maybe those Ampeg heads work better with speakon connectors than with 1/4 ones....Could be