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Fender Rumble Club

Hi all it has been a while since I have been here.
G-dog approached me in another thread and asked if I would share a result from a question I had posted. He also invited me to join this club as well.
The short version of the question was, I've had a Rumble 40 for home practice for little over 6 mos now. Up until recently I returned to this instrument playing mainly basses with humbucker type pups. Hofner HCT 500/1, and a Gretsch Jr Jet. I then read about the Mustang PJ. Which purchased and greatly modified. When completed I plugged it into the Rumble and there was his, hum, and static. The answers to why this was happening from local bass players I didn't accept. From Fender to Fender, to the age old house wiring. So here is the outcome.

It's always the small things isn't it? After I got the responses from here last night I rolled over to the Rumble 40 thread and read through. I seemed to remember this issue being brought up there and discussed thoroughly about 6 months ago. I found the discussion and read through before posting any questions.

There seemed to be a central theme going on. The questions and the answers always fell on to the same point. Connections. Whether they referred to the output and input jack on the bass and the amp, the ground connections at either the wall or the power socket in the amp, or the jack plugs on the output cable.

So I made a list of the simpler checks and decided to read the more complex after completing these. Using the KISS principle.

I cleaned the plug ends on the output cable with Alcohol, I also cleaned the input jacks on the bass and the amp using q tips, I replaced the power cable with new one I just so happened to have, and I plugged into a known good high end surge protector. I also copied down 2 control settings from the Fender customer forum that claimed to assist in resolving this issue.

What I did not do was open up the bass at all and mess with any of the wiring or connections, deciding if I got to that point it was electrician time. I did check the seating of the switch, output jack, controls and tightened where needed.

At this point I plugged in and powered on in the standard way. Dead silence unless the gain, the drive, level, treble, and volume were cranked up on the amp and the tone and the volume on the bass were turned up as well. When the levels were returned to the recommended placement from the forums it became clean as a whistle. Even when selected to the J pup exclusively.

I realize that this explanation has been fairly long winded and involved but my hope is that it might be of help to someone experiencing similar issues.

I also am aware that I lucked out by having individuals willing and patient enough to provide input, suggestions, and experience to steer me towards the easier and simpler solutions first.

Finally I have no idea which trick worked or if it was a combination or all of them. All I know is that it is fine now and my OCD is back at rest. Until the next time.

Once again I give my thanx and appreciation to the members here.

As it was once said to me “A free fix is kinda nice every once and awhile"

Bob

I'm glad your Rumble wasn't the cause.

I've had both my Jazz basses get really buzzy on me now at separate points. First time I brought it in and they just reseated the bridge and ground wire. Second time I thought it was the single coils and thought hey that's probably why the sound so good anyway - true singles. Popped a new bridge on the other night and it's dead silent.

Made my Jazz V sound worlds better too. I might have had a slight change in opinion of if bridges effect tone because of it.

Anyway those tiny cavities on our basses seem to be a place where a small misalignment becomes an audio-calamity.
 
Gratz
I think I've decided that this is exactly what I'm saving for lol
I auditioned today for a classic rock cover band (doing some country too but primarily classic rock stuff) and it sounded fantastic! It wasn’t even close to being pushed (gain at 9 o’clock and master at noon. Compliments from the lead singer on the sound/tone. The “Vintage” button is UNBELIEVABLE! It at least triples the low end. Then, if you want a little more clarity, put your horn on “full” and engage the “bright” button.... holy smokes! Kick a** tone and power. And the amazing thing is, you’re only using 350 watts since the 410 is an 8 ohm cab. Plenty of balls. I’m going to get the Rumble 115 cab and place the 410 on top of it. A 410 + 15 cab; a full 500 watts if you need it. Would cover pretty much any gig... even outside. This 410 has balls galore! I cannot even imagine it paired with a 15. If you don’t need all that power, take either your 410 or 15 solo. That would suffice for many club gigs. Don’t hesitate... pull the trigger. I’m very satisfied and it easily passed the test today. Good luck and let me know if you go with the Rumble 500 and 410. Oh, and by the way, I’ve read extensively that the Rumble series are very solid and RELIABLE. I have an Ampeg BA210v2 and it has a rattling problem. I’ve used it a total of about 30 hours at moderate volumes. Not impressed. This Rumble has it all over the Ampeg!
 
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Nope, nothing like this. the amp has been sitting in the bag in my studio for awhile and the plastic knobs are decaying.

Decaying as in melting? This sounds very odd for any plastic to do under normal temperatures and without exposure to certain chemicals.

I'd try leaving the amp outside of the bag somewhere else for a little bit while also putting some plastic (maybe some old picks or a used water bottle or something) in the bag and leaving it where you'd normally store the amp then see what happens over the course of a week.

Or just replace the knobs and see what happens. Gives you an excuse to try a different style or go for metal knobs, those shouldn't decay and if they do then you might want to see if you're storing your stuff next to a nuclear reactor or something.:wideyed:
 
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Nope, nothing like this. the amp has been sitting in the bag in my studio for awhile and the plastic knobs are decaying.
IDK where you are but heat/humidity can wreak havoc and if it's put in the bag hot(or cold), it'll hold temperature and any gasses given off will accumulate. Let it breathe.
 
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Yesterday evening I went in to Sam Ash to check out their G-B Shuttle 6.0 & just have a look around.
Well, lo & behold right at the counter they had two new Reverend basses. The Mike Watt & Mercalli.

Right under them was a Rumble 40 that they were using to trade licks on. They looked at me like I had three heads when I mentioned they knew good timbre, choosing the Rumble 40, since it's what I used at home.
Anyway, think about that for a bit. The blokes could have chosen a nice big rig to really show off those Reverends & they picked the same amp we're using!

The Shuttle sounds great, BTW, but lacks enough gain for Motörhead, so it's still there.

That Mike Watt Reverend almost converted me to a P-bass guy. It's got at least as much power as a G&L SB-1.
crazy light too, I'm guessing 7-3/4 lbs.

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The one they had was powder blue & sans pickguard.
 
G'day fellow Rumblers. Haven't been here for a few weeks - been too busy rehearsing and gigging.
Anyway, we had a pub/bar gig last weekend about a hundred miles from home in a little out of the way Aussie country town, so I took my v3 100 as a spare juuust in case. I've been using my 200c recently and when I was setting up I thought, as it's here, why not try the 100 on top of the 200. So I linked the 100 to the 200 via the effects send/return.
Massive sound. Couldn't believe how good it was. My favourite sound from the 12" 100 plus the bonus of the 15" from the 200. Now I'm not really techno savvy, but I assume the 100 also drives the 200 to give extra wattage/volume? Is that what happens, because I had a massive sound?
The 100 gain was at 10 o'clock and master volume at 11 o'clock - which would not normally cut the mustard in our covers rock band at this venue. The 200 volume was at zero so don't quite understand how it all works. I'd be interested in your expert responses.
 
Was ask to come here because I play through a Rumble 40 watt now instead of my 250 Twin 10 in. I still go direct into our PA and use it more like a monitor. I changed the 10 out with an Eminence 100 watt 10....way better now and it doesn't hurt the amp. I love the push button EQ with Bright...Contour and Vintage. Never use the over drive though. You can tweak this little thing all day long.
 
G'day fellow Rumblers. Haven't been here for a few weeks - been too busy rehearsing and gigging.
Anyway, we had a pub/bar gig last weekend about a hundred miles from home in a little out of the way Aussie country town, so I took my v3 100 as a spare juuust in case. I've been using my 200c recently and when I was setting up I thought, as it's here, why not try the 100 on top of the 200. So I linked the 100 to the 200 via the effects send/return.
Massive sound. Couldn't believe how good it was. My favourite sound from the 12" 100 plus the bonus of the 15" from the 200. Now I'm not really techno savvy, but I assume the 100 also drives the 200 to give extra wattage/volume? Is that what happens, because I had a massive sound?
The 100 gain was at 10 o'clock and master volume at 11 o'clock - which would not normally cut the mustard in our covers rock band at this venue. The 200 volume was at zero so don't quite understand how it all works. I'd be interested in your expert responses.

Right on, @Shadows Bass! If you didn't have an extension cab connected to your R200c then it was running at 140 watts max. That plus the R100c gave you a possible 240 watts max (simple addition).

Whichever amp has the FX Send plugged in is the Master amp and however it's EQ'd that signal is sent through its own power amp and speaker(s) as normal, AND that same EQ'd signal is also sent to the FX Return on the Slave amp, which goes directly to the power amp and speaker(s), regardless of how any of the knobs are set! The entire pre-amp of the Slave is bypassed, if the input is left empty. That's why your Slave can be set at zero volume and still pump out the punch. The volume on the Master amp controls the volume of the Slave amp, too.

See these links about Connecting Amps Together.

Hope this helps.
 
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Anyone else' original knobs get all gunky and sticky?
The original knobs on the v3 Rumbles are «rubberized», like many other products designed to be soft and comfortable to the touch, like remotes etc. These polymers can break down over time, usually (I’m told) through some form of oxidation, and become sticky. Depending on the formulation, external factors like heat can speed up this process. It hasn’t happened to me with Rumble knobs yet, though.

There are several fixes to this that may or may not work, again depending on the exact composition of the polymer, such as cleaning with isopropyl alchohol or Goo Gone. However, amp knobs are so easy to come by that I’d just swap them out.
 
The original knobs on the v3 Rumbles are «rubberized», like many other products designed to be soft and comfortable to the touch, like remotes etc. These polymers can break down over time, usually (I’m told) through some form of oxidation, and become sticky. Depending on the formulation, external factors like heat can speed up this process. It hasn’t happened to me with Rumble knobs yet, though.

There are several fixes to this that may or may not work, again depending on the exact composition of the polymer, such as cleaning with isopropyl alchohol or Goo Gone. However, amp knobs are so easy to come by that I’d just swap them out.

I'm definitely going to swap them out, but I was wondering if anyone else had the issue. When I first bought the head, they needed to be replaced because of similar prob, which Fender did under warranty. But now they're really gummy.

thnx
 
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Does anyone have any experience running line level effects into the preamp of the Rumble?

The end of my signal chain is unbalanced line level mono, I would like to feed this into the input of the rumble, but I am wondering if I need to convert it back to Hi-Z before doing so?
 
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I bought my 200 combo on release, so it's over 3 years old. My knobs are like-new. No stickiness at all. But...the amp has never been out of the house.

Must be an environmental issue, like playing bars/clubs that still permit smoking.

Caution is advised! Old engineers like me don't die. We don't even fade away. We just keep solving problems. Other peeps problems. Often without asking first. :rollno:
 

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