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Splitting signal into two heads ...??

Discussion in 'Amps and Cabs [BG]' started by tjh, Jan 5, 2013.

  1. tjh


    Mar 22, 2006
    I have never dealt with this in the past, but if I want to use two heads (two MB200's), is the most efficient way to do this to run a simple Y-cable ...with inst cable into female 1/4" with a male 1/4" into each head? ... they will each be powering a two 210 4 ohm vertical stack ... I would want to use the vol and EQ on each head seperately, as each stack is a different brand ... thanks
  2. Bassmec


    May 9, 2008
    Ipswich UK
    Proprietor Springvale Studios
    In order to avoid earth loops and control other bad interaction a splitter box containing a primary and two secondaries hi impedance transformer is a must.
    The simple way is to buy a p split by lehle, as that's thought to be one of the best transformers available for this purpose.:bassist:
  3. I'm running into two identical combos with a Morley ABY with no issues at all.
  4. Growly Lytes

    Growly Lytes

    Dec 4, 2009
    Downunder Oz
    Bass player
    Im doing the same with a stereo Poweramp & 2 Sansamps because each cab is different.
    I dont need a Y-cable since its all independent but the Poweramp also has an internal Y-cable built-in which links the channels internally if i needed to use it.
    I mostly use it in stereo mode cause the same sound cant be used in each cab.
    I gotta say it works great for me,lots of control.
  5. Aussie Player

    Aussie Player

    Apr 20, 2011
    I have used spitter plugs but mostly the twin outlets on a BOSS pedal. Works fine.

    When I ran 3 heads, I used the BOSS pedal for 2 and ran the 3rd through the Send/Receive outlets on the back of the amp. (All Hartke)
  6. mikeswals

    mikeswals Supporting Member

    Nov 18, 2002
    Seattle / Tacoma
    I use a Lehle P Split splitter box to do this. I love it because the signals are isolated and dead quiet, it's also passive and requires no batteries or wall plug. I tried the Y cable thing, the preamp out to poweramp in patch, chorus pedal, I even tried a Morley ABY box, and I used to get noisy buzzy signals. But YMMV.
    The Lehle is great since it's a little smaller than a pedal, I put it in the middle of my pedal chain since I only want certain pedals going to amp A and others into amp B.
  7. tabdog


    Feb 9, 2011
    You may find it more efficient to bi-amp
    or use a pre amp with true stereo,

  8. Aussie Player

    Aussie Player

    Apr 20, 2011
    That's interesting. I never got noise but I never use pedals effects or any stuff on the floor. I plug a bass into the amp or into the Boss pedal as a splitter and get no noise or hum whatsoever.
  9. Mykk


    Aug 22, 2010
    Prescott, AZ
    I'd use a XLR to 1/4" mono cable, go out of one MB200 in 'Pre' mode into the instrument input of the 2nd MB200
  10. Does the splitter box work like an ABY? I'm just inquisitive.

    I had some noise before I went from a passive cheapy to nicer bass with passive EMG's with an active pre. Also, I run one of the combo's using it's tube emulation and the other straight solid state. I've noticed that the emulation is really spot on. The "tubetone" is noisey, hums, and will even feedback. I dig it.
  11. JGR

    JGR The "G" is for Gustav Commercial User

    Jun 29, 2006
    President, CEO, CFO, CIO, Chief Engineer, Technician, Janitor - Reiner Amplification
    I have a Radial Switchbone and it works perfectly for this.
  12. RickenBoogie


    Jul 22, 2007
    Dallas, TX
    Any AB/Y box that uses a buffer will work. Lehle makes the best stuff, imo, but there are many choices, including Radial. The Morley is NOT buffered, and will load one side or the other, creating problems. One side will sound weaker because of this. Another good alternative is a stero fx pedal, which will also be buffered, and have a left and right output, one for each amp.
  13. Hmmm.... I did notice that one didn't have as much volume. I just attributed it to using different settings. SHows how much I know. So, maybe I should be on the lookout for a different ABY. Any reccomendations?
  14. tjh


    Mar 22, 2006
    Well, I guess you are never too old to learn ...I had never even heard of the Lehle products until suggested, and after researching them, good stuff ..

    Just to clarify my objective here, I have a 2 ohm final load (two 4 ohm stacks) and want to use them all if needed, 4 ohm stack from each head. All of my heads operate at 4 ohm minimum, so I would need to use two heads.

    ... Can I simply 'line out' of one head into the input of the other, and then use the 'speakers out' from each head to power each stack at a 4 ohm load?

    I am thinking if this will work that simply, and IF the line out is pre-EQ, I should be able to use the EQ of each amp independently as well ....

    Desired final result, two heads, each powering a 4 ohm load, and EQ functioning for each head/stack ... am I correct in my thinking ?? ..

    This would probably only be needed to be done on the infrequent occasson, so if this can this be done without introducing something externally like the Lehle, it would be cost advantgeous ...

    Thanks for the replies and the education so far ...
  15. Mykk


    Aug 22, 2010
    Prescott, AZ
    Yes, this is what I was suggesting earlier. Use the XLR out of one head, set on 'Pre'. With a XLR to 1/4" cable go to the instrument input of the next head

    You could also just go to an external poweramp for the 2nd cab and not deal with two individual tone sections if you don't want. The advantage to using two MB200's is you'd still have an available D.I. out for club P.A's
  16. mikeswals

    mikeswals Supporting Member

    Nov 18, 2002
    Seattle / Tacoma
    The Lehle P Split is only a Y box, not an ABY.
    But Lehle does make an ABY called the Little Dual.

  17. DigitalMan

    DigitalMan Bring Back Edit/Delete Supporting Member

    Nov 30, 2011
    Bay Area, CA
    You can cascade from the line out of one amp to the input of another. However, ymmv when it comes to the sound quality of the downstream amp. Lots of variables to consider. The only way to be sure is to A/B the setup by listening to the second amp in the chain solo with a cascaded line and then a direct instrument line.

    After doing this I opted for a Radial splitter because the cascaded signal was radically different from a true direct instrument signal, especially in terms of gain and The ability to OD.
  18. tjh


    Mar 22, 2006
    Excellent replies .. thanks guys ...I have a couple of options to try and what to look out for as the signal progresses without the Radial or Lehle splitter, and how to correct it with a couple quality products if there is a discernable signal change ... thanks again!!
  19. Thanks Caca. I'm guessing the Little Dual would serve as well in eliminating signal loss to one of the amps?

    Sorry if I've derailed this thread, OP.
  20. tjh


    Mar 22, 2006
    No problem, steps ... this is all good info and I am learning right along with ya :)
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