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Thumpinator & low A !?!

Discussion in 'Effects [BG]' started by sifi2112, Feb 18, 2014.


  1. sifi2112

    sifi2112

    Feb 5, 2009
    Has anyone used a thumpinator with a 5 string in drop A ? A being 27.5 Hz & thumpinator cut-off at 30 Hz ... my cab is a PJB 9B btw.

    Does it (work) matter as I keep hearing about the 'fundamental' not really being heard anyway .. ?
     
  2. icecycle66

    icecycle66

    Feb 4, 2009
    Arizona
    I've used the Thump with Drop A and lower (just screwing around) and with various octave pedals and ultra low end EQ (Meat Box) and it works fine.

    The Thumpinator doesn't kill any of the distinguishable sounds air vibration feeling you would have without the Thumpinator in line.
     
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  4. jimmybc91

    jimmybc91

    Oct 8, 2013
    Los Angeles
    +1 Just in case you need convincing (OP) I have also tried this and have had no problems whatsoever. ;)
     
  5. bassofthe

    bassofthe

    Jun 5, 2011
    Not a problem. You don't need the fundamental when going that low anyway. I use a Thumpinator and tune to F#.

    According to their website, the 9B only goes down to 35 Hz. You're not reproducing those frequencies anyway.
     
  6. sifi2112

    sifi2112

    Feb 5, 2009
    So basically it doesn't matter about tuning lower but has anyone noticed a perceivable diff in volume between the notes played above the cut off & the notes below ?

    Also my amp only produces 200w at 8 Ohms so hoping to achieve a bit more efficiency along with some speaker protection ... thanks for the replies guys
     
  7. bassofthe

    bassofthe

    Jun 5, 2011
    Nope, no difference to my ears.

    That's exactly what the Thumpinator is for.
     
  8. sifi2112

    sifi2112

    Feb 5, 2009
    Does anyone have an efficient cab that produces these low freqs & is there still no perceivable diff ? I asked PIB & if I added another cab it could go down this low .... would it then make a diff on thumpinator?
     
  9. JohnDavisNYC

    JohnDavisNYC

    Jan 11, 2008
    Brooklyn, NY
    Disclosures:
    Endorsing Artist: Aguilar, D'Addario, Subdecay, Tonefactor
    I just ordered a Thumpinator. Can't wait to not destroy speakers and lesser PA's.

    John
     
  10. PA's are highpassed much higher, even very good ones.
     
  11. sifi2112

    sifi2112

    Feb 5, 2009
    I emailed Tech21 to ask if the Landmark 300 had a HPF & they were kind enough (again) to reply ... They said 'yes' and ...

    'HPF set at 50Hz with a very gradual filter, about 3dB per octave'

    So will I still benefit with the thumpinator at all ?

    Not sure what the tuning freq is of the PJB 9B or how much that matters but I do notice quite a lot of cone movement when cranked ... maybe this is normal for these drivers ...?

    Just trying to optimize my rig as much as possible so any more thoughts, opinions, experience most welcome & thanks again for taking the time to read/comment :)
     
  12. F-deck HPF-3 is what you want.

    Your amp's 50hz 3db filter is 6db at 25hz, I think that's how it goes.
     
  13. So...not to sound completely ignorant but I keep seeing Thumpinator mentioned. In what circumstance should I think about purchasing one? It filters out higher decibals we don't hear right?

    I play through a Hartke HA 3500 350 Watt Head. The cabs are a Hartke that had the aluminum coated speakers, and the bottom is a Mesa Boogie with a 15" sub. I'm playing a Rickenbacker 4003 bass.

    Any knowledge, feedback, and advice would be awesome.
     
  14. SirMjac28

    SirMjac28 Patiently Waiting For The Next British Invasion Gold Supporting Member

    Aug 25, 2010
    The Great Midwest
    It filters out the low freqs your speakers struggle to produce thus saving your speakers from damage that's the quick and dirty I'm sure someone else can give a more technical explanation
     
  15. FerK

    FerK

    Dec 11, 2011
    Switzerland
    From reading around today, it seems the Thumpinator has a very steep cut at approx. 30Hz, rather than a "very gradual". The question would be if anywhere in the chain you have another HPF that cuts off around the same frequency. Alternatively, you might want to check this thread: http://www.talkbass.com/forum/f15/fdecks-hpf-865291/

    More info in his site: https://sites.google.com/site/hpftechllc/home/hpf-pre
     
  16. I was going to suggest looking into that as well. Might be my next gear purchase to get my rig more efficient and keep clean headroom.
     
  17. Where is a link to this Fdeck product or any of their other products?
     
  18. FerK

    FerK

    Dec 11, 2011
    Switzerland
    I just posted it two posts above yours. It's in a Google's site.
     
  19. TrevorOfDoom

    TrevorOfDoom Supporting Member

    Jun 17, 2007
    Austin, TX
    while I'm here...
    I use an octave pedal (MXR BassOctave Deluxe) and I'm thinking about using the Thumpinator after the octave pedal to help save PA's when I run direct.
    My cabinet has a steep roll off after 100Hz, so I'm not worried about that.
    Any thoughts?
     
  20. scotch

    scotch It's not rocket science! Supporting Member

    Nov 12, 2006
    Nashville, TN USA
    Disclosures:
    Please see Profile for Endorsement disclosures
    That can definitely work, but I say let the engineer worry about the pa. He's probably already high passing you anyway.
     
  21. Even a sealed cab tone benefits from not sending it LF nonsense that it doesn't reproduce.
     



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