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Rumble vs Markbass

I had a MB mini combo 12" I really like, sold it because of its 42lbs targetting latest 30lbs cmd121p. Powerfull (280w alone) well defined, just a tweeter change, it just lacked some low end I attached to its size.
Since then I play on one mate ´s Rumble 100 2x10 , a massive wheeled cab. I found it good sounding with a precision bass, really close to my MB, perhaps a bit fatter.
But my surprise comes from my double jazz bridge (i have the old deluxe precision config but passive) that renders beefy and punchy on the rumble while I had a really brighter sound on the MB. The double jazz feels some active low end stuff i really like.

Now my question, it's an absolutely different cab size and speaker, are the amp themselves that different ?

I think of having a 12" diy cab and for the head i have two options at 280€ brand new here :
Mb LM250 -
Fender rumble 350

I'm lost on which one to choose, I'm focused on clean sounds, no need for overdrive, I 'd go MB but don't I miss something with the rumble 350?
 
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I was thinking about getting the Markbass cmd121p combo but the JB player school is almost half the price. Will it stand up to small gig volumes with a moderately loud drummer? I suspect it will but has anyone else got real experience? Not sure I can justify the extra expense of the 121p.

I tried the Rumble 100 too and was quite impressed but it did seem almost too lightweight to me. I've not tried it with a band though so should reserve judgement. From the sound of others on this thread the JB players school and the Rumble 200 have a similar volume, being about 150w., and they are a similar price.
 
Question on power delivered, head family comparison at 4 ohms
Rumble 150 is 160w, power supplay says 400w - 195€
LM250 is 250w, power supply says 350w - 280€
Rumble 350 is 370w, power supply says 950w - 280€
LM III is 500w, power supply says 600w - 500€


Is RMS rendering that different between makes or class D allows tricking the truth on real power output ?

Moreover LM250 is 150w at 8 ohms, I thought inpendance response was linear !? ....weird

(Edit : added LMIII - not in my budget - and prices, power is money, uh ?)
 
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I've owned both amp heads - the Rumble 500 V3 and the MB LMIII. I like both amps for different reasons. As mentioned in other posts, comparatively, the MB is sterile but can sound more warm as you adjust the VLE. The Rumble has more of an old school vibe especially with the vintage button engaged. In the end, I always tended to plug into the MB even though they are both sitting on top of my cabs. I preferred the cleaner and clearer tone of the MB. As a result, I ended up getting rid of the Rumble. However, either one can get the job done...it's really a matter of taste. BTW, if buying just the heads, the cabs will make a difference in the tone as well. I've not tried the combos so I can only speak about the heads.
 
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I'm too late now for the bargain Rumble 350 or I should order abroad. I stay Markabass although I can't really compare my former Mini 121 with my mate's Rumble 100 2x10 I currently play, heavier, weaker, bassier indeed but not as percussive as the MB. I've just ordered a LM250 300€ in my local store, same as any internet euro site.
 

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