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Is this a dumb idea?

Discussion in 'Amps and Cabs [BG]' started by alanolynn, May 16, 2019.

  1. alanolynn


    Aug 19, 2012
    *Pulls tab on can of worms and throws*

    So, I own a TC Electronic BQ500 ($249) head and a Hartke 112B ($299) cabinet. I enjoy them. The small package, the sound, the price, all of it....except for the volume restriction, which is to be expected at this price level.

    I can't just pick up another matching cab, since it's only available in a 4 ohm configuration. And I can't just get a different head to power the cab due it's own limitations.

    My idea is.....purchase a matching setup. Like, the same exact thing I have, just double. It would cost the same, if not less, than buying a different set of cabs, or a larger, louder setup. Then, I just run a "bi-amped" setup. I have no desire to make it a true 1-high 1-low set up though. I just want to move more air for a decent price.

    The BQ head hardly feels like 500 watts, which I can understand since it's class D. But this HAS to at least help some.

    Amy I crazy? Is it a bad idea? Am I wasting your time making you read this?

  2. Redbrangus

    Redbrangus Supporting Member

    Nov 19, 2018
    Under The X In Texas
    Is it crazy? Probably not so much. But it seems like you'd get to where you're trying to go cheaper by selling or trading in the 4-ohm cab and getting two 8-ohm 112 cabs...if you like what the head's doing for you, that is.
    pcake and CTBassGuy like this.
  3. NKBassman

    NKBassman Lvl 10 Nerd

    Jun 16, 2009
    Winnipeg, MB, Canada
    Crazier ideas get posted in the Amps forum every. single. day.
    Yours seems quite sensible by comparison.
  4. NKBassman

    NKBassman Lvl 10 Nerd

    Jun 16, 2009
    Winnipeg, MB, Canada
    However, you might also consider the $550 investment, plus whatever used value your current rig has, and putting that into a single rig that will work for you.

    Looks like the Hartke HD112 is switchable between 8 ohms and 4 ohms. Sell your 112B and put your full budget into two HD112s. Use one at 4 ohms for smaller gigs, or switch to 8 ohms and use both for larger gigs. Just a suggestion... I'm not really familiar with TC Electronic or Harke at all.
    Last edited: May 16, 2019
  5. beans-on-toast

    beans-on-toast Supporting Member

    Aug 7, 2008
    Not so crazy. Y connect the inputs together (if two inputs per channel simply jumper the inputs with an instrument cable), like people such as Hendrix and Clapton did in the 60's

    Honkey tonk likes this.
  6. arbiterusa

    arbiterusa Guest

    Sep 24, 2015
    Not how it works. Watts are watts. The output architecture is totally irrelevant. The first "class D" amps were tube, built for radio transmission back in the 1930s. "D" was the next letter on the list so that's what they called it.

    There's plenty of micro SMPS amps - not all class D, the older Markbass stuff is class A/B, the "micro" part is a result of using an SMPS power supply - out there that will blow out your window glass or crack your drywall. Just to cite amps I've actually played with, the Quilter Bass Block, the GK MB500 or 800, Markbass 800, Mesa 800 series. All class D. There are no doubt plenty of others.

    The reason why the BQ doesn't feel like 500 watts is because it isn't. They even tell you so in the documentation (I know this because I have one, and will be gig testing it in a few hours and then will drop a review here this weekend). It's 500 watts PEAK. The conversion on that is PEAK * .707 = RMS, so my trusty calculator is telling me that's 353.5 watts RMS. At 4 ohms. The way most of these power modules work, that should equate to about 175-200 watts RMS at 8 ohms. But TC made their own module for this amp and haven't released specs on it...so we have to guess.

    It sounds good and reasonably loud in the music room, but the acid test is a gig. Which I have this evening. The room it will be in is a bear for bass under any circumstances, so it's a good test. One which my MB500 passes every time.

    Your idea isn't dumb. You need two cabs at least. But it is complicated; the only line out on the BQ500 is an XLR feed. The splitter cable thing posted above is less than ideal, you need something buffered so that you don't lose any output from your bass. Plenty of decent A/B/Y adapters out there. I'd get one were I trying to do what you are. Add that to your total cost. Probably about 80 bucks. Best of luck.

    If this amp is reliable, a 350 watt bass head for $199 will be a legit game changer.
    Last edited: May 17, 2019
    Honkey tonk and alanolynn like this.
  7. Sell the lot and start over with a $750 used rig is what I would do. Otherwise you're probably going to wind up with twin poxy little sets that need selling.
    DiscoRiceJ likes this.
  8. Munjibunga

    Munjibunga Retired Member

    May 6, 2000
    San Diego (when not at Groom Lake)
    Independent Contractor to Bass San Diego
    It's not that dumb if connected correctly.
  9. Coot


    Nov 14, 2018
    You can get a radial A/B/Y pedal. .it can split between either of two heads or run both together. Canadian made , cheap price, built like a tank. I use it with a WD-800 and a Subway 800 + ( Good luck and I hope you find a solution)
  10. Honkey tonk

    Honkey tonk Turn it up Supporting Member

    Feb 10, 2019
    Lower 48
    Kriegs likes this.
  11. alanolynn


    Aug 19, 2012
    Just a simple switch on the back. Pretty fun. I had an old Sound City 215 cab back in the day with a 4/16 switch.

    If I still had that, I wouldn't have this problem! :laugh:
    knappymer and Kriegs like this.
  12. alanolynn


    Aug 19, 2012
    I'm pretty tempted! Its tough to have the gear to play, and have it ready to sell too. Part of the game though, I suppose. Thanks!
  13. alanolynn


    Aug 19, 2012
    What I would LOVE, and also what would fix the problem, is to pick up one of those snazzy new Rumble 800 heads and a pair of their V3 115 cabs. BOOM, done.
  14. chadds


    Mar 18, 2000
    Cascading between inputs doesn’t always work now the way those tube amps did.
    Y cords also don’t always send enough signal.
    If it has, effects sends or line out to effects in that can bypass one pre.
    alanolynn likes this.
  15. chadds


    Mar 18, 2000
    I’ve had exactly those effects and half the amplification for bass. 1971. But my point if I had that again now I wouldn’t be typing on TB right now and you could hear me playing. :):)
    Last edited: May 19, 2019
    alanolynn likes this.
  16. ProdigalBassman


    Mar 22, 2012
    Just checked Hartke's site. The 112B is 4 ohms and rated at 300 watts. Seems like you've got a bit of a mismatch between your amp and cab?
  17. alanolynn


    Aug 19, 2012
    Still, that 500 is PEAK power. Which means, it could push 500 watts if its going downhill, on fire, with a tail wind...for about 20 seconds.

    Since this post, I've updated the cab to a more "gig-worthy" SWR Henry 8x8. This has changed everything, and now, I've got plenty of sound to blanket the floor. I've also added a Boss LMB3 and an MXR M80 DI to the mix, which helps with the poorly designed input and EQ of the BQ.
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