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238 Views 2 Replies Latest reply: Sep 5, 2012 2:45 AM by wolbai RSS
wolbai Just Startin'
wolbai
177 posts since
Mar 30, 2010
Currently Being Moderated

Sep 2, 2012 6:30 AM

DT50/212 with a 2x12 extension cab (open vs. closed back)

As Line6 is not coming up with a 2x12 cab, which is for my taste a good extension to a dt50-combo, I have bought a Marshall JVMC212 cab.

 

The main reasons for an additional cab was having more punch / bass and more monitor volume-flexibility for bigger venues.

 

I am currently using a RIVERA Rockcrusher power attenuator with two speaker outputs which are suitable for 2 x 16 ohms speaker loads. I have choosen a 16 ohm cabinet, because this gives an equal amount of wattage load the all speakers.

 

The speakers of the JVMC212 (G12-65 + G12-Vintage 30) are soundwise well balanced for me and fits to the DT50/212 combo speakers. But the cab is still very new.

 

The JVMC212 has an open back design. I am thinking of rebuilding the cab, so I can also use it as a closed back cab.

 

There are pros and cons on open and closed backs: it is subjective, depending on the music style, on the size of venues and it is also speaker depended.

 

My style of music can be considered as Cover Rock music - mainly 70s and 80s.

 

I am not shure, if a rebuild to a open/closed cab for flexible use would be a good idea, meaning whether the speakers are performing even more bassy and punchy in a closed back version.

 

Playing the cab in the rehearsal room makes me thinking that a closed cab would be a perfect match to the DT50/212 combo which is some how a good balance of all the pros and cons.

 

Any thoughts / ideas / experince are helpful. Thanks.

 

wolbai.

  • paulroland Just Startin'
    paulroland
    3 posts since
    Nov 2, 2007
    Currently Being Moderated
    Sep 4, 2012 5:28 PM (in response to wolbai)
    Re: DT50/212 with a 2x12 extension cab (open vs. closed back)

    I've gigged my DT50 head with two different 2x12 closed back cabs.  One is a smaller size Lopo brand with V30s.  The other is a larger size Avatar Contemporary with my old Vetta 1 combo speakers installed.  I liked the overall tone of the Lopo line much better.  The Avatar is too woofy for my tastes.  The closed back cabs are very directional so you have to stay in the sweet spot beam from the cab to hear it well.  For that reason, I preferred the open back design of my old Vetta combo.  Plus the onstage bleed of the open back allows the rest of the band to hear my guitar without having to put too much of it in the monitor mix.  We have a very loud drummer and play rock covers from the 80's to present.  Nothing too heavy.

    • wolbai Just Startin'
      wolbai
      177 posts since
      Mar 30, 2010
      Currently Being Moderated
      Sep 5, 2012 2:45 AM (in response to paulroland)
      Re: DT50/212 with a 2x12 extension cab (open vs. closed back)

      Thanks for sharing your experience!

       

      If I would decide once again for a DT50, I would now go for a DT50 Head and two 2x12 cabs too. This is the more flexible solution than a DT50 combo to me:

      it is easier to carry and it provides more monitor and sound flexibility.

       

      And this should be very much the case with flexible backs - meaning open and closed backs: they can be well adapted to the room your are playing (rehearsal, small clubs, bigger stages). In smaller clubs the sound sometimes also benefits if you can postion two cabs differently (in 3-5 m distance), so the Band and the listerners can hear you better.

        

      Using a good power attenuator is a key element of my rig, because otherwise I would even more run into the "db-overkill" with another 2x12 cab.

       

      Yes - as you said - open back cabs (or combos) are pretty good. I think especially for smaller rooms, to get a more roomy sound, the Band gets more volume from your monitor (amp) rather than from stage monitors. But in some environments cabs with open back can be too much multi directional volume wise. For example I therefore had some bad experiences during recording in our rehearsal room: the guitar was heared too much on the mics (Drums, Vocals).

       

      Soundwise closed back cabs have more punch and base fundament and this is what I have missed with my DT50/212 sometimes. Now my new JVMC212 cab is approx. 1/3 open back and adds some punch and base fundament to the DT50/212.

       

      As I said: I am a fan of 2x12 cabs with flexible backs. I was just wondering how the JVMC212 with a closed back would sound and whether the specific speakers (G12-65 Heritage, G12 Vintage 30) are still working fine or if there are any negativ outcomes that could come up with.

       

      wolbai.

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