Fender Rumble Club

[Tonecaster]

Thanks, G-Dog,
So clever of them to hide it this way...
That said, I think it's different on the Rumbles...

ATB Ed

 

[G-Dog]

Thanks, G-Dog,
So clever of them to hide it this way...
That said, I think it's different on the Rumbles...

ATB Ed

Since it is a dynamic circuit, I believe it's intended to be somewhat different in every different amp. However, the manuals for the Rumble 800 HD head and the new Rumble 800 combo are the only ones I've seen to actually refer to a "modified Delta-Comp" circuit.
.

 

[Miles_ONeal]

Hey Miles,
I didn't discover this myself. A fellow TBr dug around in the Fender literature. Apparently, they baked this in to the sound, which works for me BTW. Perhaps your settings are different.
The bottom line, no disrespect is intended.
We all have different ears.

ATB,
Ed

That’s fine. I’ve read the Fender stuff. I’m glad it works for you and lots of others. But the Fender compression (minimal at lower volumes, which is where I mainly play right now) is a completely different type of compression than most, if not all, pedals. So even at higher volumes I might want my pedal, just as some people want multiple distortion, phaser, or other pedals.

if you don’t need/want pedals with Rumbles, they sound great! If you want/need pedals with Rumbles, they sound great!

 

[GonePlaid]

That’s fine. I’ve read the Fender stuff. I’m glad it works for you and lots of others. But the Fender compression (minimal at lower volumes, which is where I mainly play right now) is a completely different type of compression than most, if not all, pedals. So even at higher volumes I might want my pedal, just as some people want multiple distortion, phaser, or other pedals.

if you don’t need/want pedals with Rumbles, they sound great! If you want/need pedals with Rumbles, they sound great!

I seem to detect a pattern there.

 

[13bass]

Yeah, they cleverly hide it in plain sight in the Rumble 40-500 manual:

View attachment 5088232​

But it's not new or exclusive to Rumbles, it's been around a very long time on many various Fender amps. Although not necessarily the first instance in print, this description is from the Fender M-80 Bass amp manual over 30 years ago, which had a Delta-Comp on-off button on front!

View attachment 5088250​

Simply put, it is a dynamic compressor that responds to clipping by limiting the distortion.
.

One thing I am not clear on, is the compression always on? Even if volume, is low, for example at 9 am? And compressions is VERY low, the gradually increases as volume increases?
Then I got to thinking if one wanted a bit more compression, could turn the volume to 1 or 2 o'clock or whatever and bring your overall volume down using the volume control on your bass to compensate, so your volume level is ok, but getting the amount of compression you want? Or am I simply demonstrating how very little I understand about all this??

And does the gain on the Rumble affect this compression in any way?

 

[G-Dog]

One thing I am not clear on, is the compression always on? Even if volume, is low, for example at 9 am? And compressions is VERY low, the gradually increases as volume increases?
Then I got to thinking if one wanted a bit more compression, could turn the volume to 1 or 2 o'clock or whatever and bring your overall volume down using the volume control on your bass to compensate, so your volume level is ok, but getting the amount of compression you want? Or am I simply demonstrating how very little I understand about all this??

And does the gain on the Rumble affect this compression in any way?

Good questions, 13. The Delta-Comp circuit is proprietary intellectual property of Fender without much published about it that I found.

However, I would guess from what little I have read, and its depiction in the Rumble block diagrams, that it is not always on. It is described as being "dynamic" and "responding to clipping", and the block diagrams show it taking input from a clip detector. I further surmise that clip detector not only turns the Delta-Comp on, but tells it what level(s), or amount(s), of clipping it detects, thus "tuning" the amount of compression applied. At least, that's my theory.

Also, although the Gain control description doesn't specifically mention any effect on the Delta-Comp circuit, I believe it certainly does effect the timing and level of clipping, and therefore the level of compression.

.​

 

[13bass]

Good questions, 13. The Delta-Comp circuit is proprietary intellectual property of Fender without much published about it that I found.

However, I would guess from what little I have read, and its depiction in the Rumble block diagrams, that it is not always on. It is described as being "dynamic" and "responding to clipping", and the block diagrams show it taking input from a clip detector. I further surmise that clip detector not only turns the Delta-Comp on, but tells it what level(s), or amount(s), of clipping it detects, thus "tuning" the amount of compression applied. At least, that's my theory.

Also, although the Gain control description doesn't specifically mention any effect on the Delta-Comp circuit, I believe it certainly does effect the timing and level of clipping, and therefore the level of compression.

View attachment 5088542
.​

Thanks G-Dog! Great info, and so maybe the short answer is a big MAYBE?

I figure I highly doubt that I can "hear" compression differences, so I figure I would ask the experts here!

It also seems logical then, that at lower volumes, say a noon and below, it would be reasonable to assume no compression at all, unless you are really struming/picking the strings exceptionally hard.
Which also makes me think about how many times I have read here about players experiencing a much different tone/sound/etc kicking in when they have volume and/or gain, or both, at 1 o'clock and higher, and that maybe that's when the Delta-Comp begins to kick in, who knows.

And then, if gain is effecting it as well, then hotter pickups, active vs passive, and a number of other things can vary the effect/level of the Delta-Comp kicking in, and when, and how much, so it would literally vary player to player and bass/rig/setup to bass/rig/setup?

 

[MrB64]

Good questions, 13. The Delta-Comp circuit is proprietary intellectual property of Fender without much published about it that I found.

However, I would guess from what little I have read, and its depiction in the Rumble block diagrams, that it is not always on. It is described as being "dynamic" and "responding to clipping", and the block diagrams show it taking input from a clip detector. I further surmise that clip detector not only turns the Delta-Comp on, but tells it what level(s), or amount(s), of clipping it detects, thus "tuning" the amount of compression applied. At least, that's my theory.

Also, although the Gain control description doesn't specifically mention any effect on the Delta-Comp circuit, I believe it certainly does effect the timing and level of clipping, and therefore the level of compression.

View attachment 5088542
.​

Thanks for that, G-Dog.

 

[JakobT]

Good questions, 13. The Delta-Comp circuit is proprietary intellectual property of Fender without much published about it that I found.

However, I would guess from what little I have read, and its depiction in the Rumble block diagrams, that it is not always on. It is described as being "dynamic" and "responding to clipping", and the block diagrams show it taking input from a clip detector. I further surmise that clip detector not only turns the Delta-Comp on, but tells it what level(s), or amount(s), of clipping it detects, thus "tuning" the amount of compression applied. At least, that's my theory.

Also, although the Gain control description doesn't specifically mention any effect on the Delta-Comp circuit, I believe it certainly does effect the timing and level of clipping, and therefore the level of compression.

View attachment 5088542
.​

The following is part of the Rumble Talks post about the Delta-Comp limiter, taken from the Rumble 350 manual:

"Rumble bassamplifiers are equipped with Fender・s Delta-
Comp limiter to minimize power amp distortion and increase
sustain. Setting the VOLUME control to higher settings
or playing aggressively with hotter basses may result in a
heavily compressed sound with increased sustain. Using the
・6dB switch or setting the VOLUME control lower will provide
a less compressed sound with more dynamic range and
increased touch-sensitivity."

 

[EatS1stBassist]

9

Well, maybe this one:

Or this one:

 

[Tommy TGrip]

I just realised that having the drive on, but drive set at zero has a fairly significant impact on the sound. It seems to give it more definition. It thins it out a bit too but I think this could be countered with the vintage switch on and a bit more low mids. Anyone else using the overdrive this way?

 

[GregT]

I just realised that having the drive on, but drive set at zero has a fairly significant impact on the sound. It seems to give it more definition. It thins it out a bit too but I think this could be countered with the vintage switch on and a bit more low mids. Anyone else using the overdrive this way?

No, but I think I'll have to try it out just for fun. If we all used the same identical settings on our Rumbles every time, they wouldn't even need to come with knobs.

 

[Deleted member 268085]

I just realised that having the drive on, but drive set at zero has a fairly significant impact on the sound. It seems to give it more definition. It thins it out a bit too but I think this could be countered with the vintage switch on and a bit more low mids. Anyone else using the overdrive this way?

Not me. I used it as a Mute (both knobs fully CCW) and switched it with the Fender pushbutton foot switch on my 200 and 40 combos (sold before moving to 230V land).

 

[Miles_ONeal]

I just realised that having the drive on, but drive set at zero has a fairly significant impact on the sound. It seems to give it more definition. It thins it out a bit too but I think this could be countered with the vintage switch on and a bit more low mids. Anyone else using the overdrive this way?

I’ve always used it as a mute, but my tuner does that, so I’ll try it out.

 

[gl1234]

Question for the Rumble hive mind...indirectly a Rumble question...

I love using my iphone/R40c aux in as music source i play along/practice with at home. I use a 3.5 male x 3.5 male cable which plugs into an Apple 3.5 female x Lightning adapter, so i can plug my iPhone music source into the R40c aux in. Hope that makes sense, i can take pics if needed.

Problem is lots of static if i touch or move iPhone, i've tried a variety of 3.5 cables. Could be the Apple 3.5 x lightning adapter is the prob source, can't tell.

Question: can anyone recommend a high quality cable with 3.5 male at [amp] end and Apple lightning at other end, no adapter needed?

 

[Tommy TGrip]

Spent a bit more time with OD on but no OD dialled in today. It's definitely a thing. To me, the Vintage switch works better this way, it's not as wooly but still gives that solid thickness. Even at zero there's still a bit of overdrive coming through but I don't mind that. Now working back through pedals, starting with DG Vintage Deluxe to optimise. Ah, the quest for tone.

 

[CraigL]

Question for the Rumble hive mind...indirectly a Rumble question...

I love using my iphone/R40c aux in as music source i play along/practice with at home. I use a 3.5 male x 3.5 male cable which plugs into an Apple 3.5 female x Lightning adapter, so i can plug my iPhone music source into the R40c aux in. Hope that makes sense, i can take pics if needed.

Problem is lots of static if i touch or move iPhone, i've tried a variety of 3.5 cables. Could be the Apple 3.5 x lightning adapter is the prob source, can't tell.

Question: can anyone recommend a high quality cable with 3.5 male at [amp] end and Apple lightning at other end, no adapter needed?

Not a direct answer to your question, but I recently got one of these to use bluetooth from an android tablet to the aux in on my R100. It works really well; no more messing with cables. Get one with Bluetooth 5 for low power use and low latency.
Lavales Bluetooth 5.3 Transmitter Receiver for in-Flight TV to 2 AirPods/Headphones, Bluetooth Adapter for 3.5mm Jacks on Airplane, AptX Adaptive/Low Latency for TV/PC/Gym/Cars https://a.co/d/719UZ9X
Note: my tablet also has Bluetooth 5 so the setup works very well; no noticeable latency.

 

[CraigL]

I've used a number of headphone amps over the last few years; Amplug, Zoom B1X4 pedal, R25, and my R100. The R100 is by far the best of the lot; I think it's because of the cab sim in the circuit, which the R25 doesn't have. Just the most pleasing and clearest tone of the lot, and simple controls.

 

[zontar]

 

[PWolverine]

Question: can anyone recommend a high quality cable with 3.5 male at [amp] end and Apple lightning at other end, no adapter needed?

I use a "UGREEN Aux Cord for iPhone Lightning to 3.5mm Cable for Car MFi Certified 3.5mm Headphone Jack Male Stereo Audio Adapter Compatible with iPhone 14 Pro Max/14 Plus/13 Mini Pro Max 12 11 Pro XR, 2M" ... works perfectly with my iPhone and was going in to the Aux of my Rumble 200, and using the music app on my iPhone. Worked perfectly for me. Apologies the link is to the .com.au site, i'm sure there will be the exact same product on the US site.

Server Busy - don't knwo why it comes up as Server Busy, but this is the amazon.com.au link.