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Sorry, I didn't really notice the second part of your statement (which made the first part sort of rhetorical).
I guess it could be useful info for others, but of course, use whatever you want, by all means.
The live music biz in my area went to sh!t during COVID and hasn't recovered. No point in upgrading for no return.
I’m sitting in with a new band tomorrow night. The rehearsal rig is a Rumble 350. I want to bypass the preamp. Is it like my 500c where I put the pedal train output into the FX return? I think I got that right 
I’m sitting in with a new band tomorrow night. The rehearsal rig is a Rumble 350. I want to bypass the preamp. Is it like my 500c where I put the pedal train output into the FX return? I think I got that right
Yessir, Stealy. Here's an excerpt from the Rumble 150 & 350 manual confirming that. See the last sentence in the "Tip" paragraph.
Does that also bypass the master volume making the external preamp volume the new master?
Looks like the volume control is before the loop, so yes.
True, but B4 that, we worked at least one day every weekend we wanted to. Now it's maybe once a month average.
Last minute jam has come up with a last minute option.
I am bringing my pedal board and a rumble 500c. Word on the street is a Rumble 200c will also be there.
is it possible to make a stack out of them without using speaker cable? I do not have any, no where to get it in this town.
I was thinking pedal board into 500c input, 500 c XLR out into 1/4 adapter into FX return on 200c (don't understand why, but my recon seems to indicate this will work and I have the gear)
Is this safe? Is this the best way consider gear at hand?
I am not determined to do this and am not going to attempt it unless I hear from members of the club.
I am bringing my pedal board and a rumble 500c. Word on the street is a Rumble 200c will also be there.
is it possible to make a stack out of them without using speaker cable? I do not have any, no where to get it in this town.
I was thinking pedal board into 500c input, 500 c XLR out into 1/4 adapter into FX return on 200c (don't understand why, but my recon seems to indicate this will work and I have the gear)
Is this safe? Is this the best way consider gear at hand?
I am not determined to do this and am not going to attempt it unless I hear from members of the club.
The simplest, most straight forward way is instrument cable from FX Send of R500c to FX Return of the R200c. Then just set 500 like you want to, the 200 will follow along. No controls on the 200 will work, but it amplifies the 500 signal.
The simplest, most straight forward way is instrument cable from FX Send of R500c to FX Return of the R200c. Then just set 500 like you want to, the 200 will follow along. No controls on the 200 will work, but it amplifies the 500 signal.
Much more better than my previous recon. Thanks @G-Dog !
The simplest, most straight forward way is instrument cable from FX Send of R500c to FX Return of the R200c. Then just set 500 like you want to, the 200 will follow along. No controls on the 200 will work, but it amplifies the 500 signal.
I assume one would use the DI out of the 500c in such a case, if one needed DI out of this configuration?
And when you say no controls on the 200c work, I assume that is what you mean, including volume? So what ever cab "balance" happens, happens automatically.
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Good qwexxion, Enrique! But it appears that the XLR Out from both combos would still be active since it is downstream of the FX Return in both amps. Try either, or both
Correct, the Master in the 200 will not work in the configuration I described because it is upstream of the 200's FX Return. The controls on the 500, and it's pre-amp signal, totally replace those in the 200.
Correct, the 500's Master sets the same signal level for both power amps. But, since the power amps are not equal, their output will also be unequal. The 200 will not be as loud as the 500. (Up to 350 watts from the 500 and up to 140 watts from the 200.)
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Out of curiosity, tonight I played through the 800 C then immediately played the same bass and same pedal board through the 500 C, and I can confirm the 500 C is just a little bit darker with all controls being exactly the same and both tweeters off. I regret to say that I didn’t do any further experimentation to see if I could match the brightness with EQ alone, but switching on the tweeter definitely adds more brightness than the 800 C without the tweeter - which is the obvious result. I am very pleased with the addition of the 500 C to my arsenal.
This. The 500 will still be about 2.5x the power level of the 200, but in terms of heard sound levels, that's not a big deal. You’ll still hear the sound of the two cabs together.The simplest, most straight forward way is instrument cable from FX Send of R500c to FX Return of the R200c. Then just set 500 like you want to, the 200 will follow along. No controls on the 200 will work, but it amplifies the 500 signal.
I did not look at the schematics, but isn't the FX Send on the 500 before the Master control?
If the Master on the 200 does not work in this situation (& I believe you are correct), then the 200's power amp will simply run as though its Master was maxed out (so the overall level will be set upstream - bass guitar volume control and 500 preamp Gain).
I think this is correct, but I might be wrong.
A look at the block diagram for Rumbles 40-500 shows the Master control upstream of the FX Send and the Active EQ and the Voicing Filters (Contour)!
... and the 500 preamp EQ & Master control). You're correct, John!
That seems like an odd place to put a Master volume control, but you are correct - maybe it is more cost effective to design them that way.
