Rumble 150 Combo by Fender

[RumbleSteve]

I own a Fender Rumble 150 1x15 Combo amp. The sound i can get from this amp is great untill the master volume is at about 5. There is pleanty of power for sure, I'v found a few people saying that the 150 has the power of the 350, and if so I want that extra power opened up. The likelyhood of that happening are very slim and i know that, but my question is, How do i connect an external cab (2x12 or 4x10) to an amp that does not provide an output for one?

the only in's and outs are as follows.....

Main Imput 1/4
Send and Return Effects Loop 1/4 + 1/4
1/4 headphones
1/4 footswitch
XLR Line out


Steve

[mikeddd]

This is just a guess on my part and should not be taken as a factual statement. You mess with your gear and fry it, too bad. That said:

Externally the 150 and 300 appear to be the same amp "head." That doesn't mean that they are indeed, the same head. Maybe they are. Possibly the 150 has an 8 ohm speaker which pulls 150w from the amp. The 210 possibly has either two, 8 ohm speakers in parallel or two, 2-ohm speakers in series to present a 4 ohm load to the amp. Typically, when you halve the resistance you double the power.


The only way to add a speaker to your combo is to hard wire a 1/4" jack directly to the speaker already in there. It will cost you $5 in parts and hour of your time. Now, whether or not you smoke your amp remains entirely to be seen.

YMMV. I am not an amp technician. I didn't even stay at a Holiday Inn last night.

[RumbleSteve]

I mostly want to keep the amp in tact and work around having to go in and re-wire. If i could run a cable from the XLR to the external cab, that would be Sweet!! I recorded bass tracks DI and was still able to produce sound through my amp.

So if i'm stuck, I'm stuck and would advise anyone planing to go bigger within a year, to find a combo amp with an externel speaker output, or just breakdown and get that half-stack you really want.

[mikeddd]

The XLR out is a line-level output used either for recording (which you already know) or feeding a mixer or external amp. You could run the XLR out to a power amp and another speaker cab. But for that much money you could almost buy the half stack.

Buy the half stack and save the Rumble for practice or sell it.

[RumbleSteve]

I can dig that. Thanks for your help. This has been an issue in my head for a long time.

[RickenBoogie]

+1 no spkr out jack, no ext spkr.

[oldcatfish]

Without messing with the wiring, to get more volume from your amp....

Get an identical amp. Stack them. Then....

First option: Plug bass into instrument input of top amp. Run from the effects send on the top amp to the effects return of the bottom amp. Control eq and volume from top amp.

Second option: Same as above except-- Go from effects send to instrument input of bottom amp. Each amp's eq and volume controls will work.

Third option: Go from bass into ABY box or stereo chorus with two outputs. Run each output to separate amp.

Fourth option: Plug into your amp like usual. Go from the amp's xlr DI output into a poweramp and cab, powered speaker, etc.

[ksandvik]

It would be just cheaper to trade/resell and get a better amp/cab.

[oldcatfish]

Quote "It would be just cheaper to trade/resell and get a better amp/cab."

Not if the OP finds a used Rumble 100. They can be had for around $150 in good condition, and would do the job just fine.

Now whether it would be a better idea to go the amp/cab route...that's a whole other issue.

With two combos, he/she could use just one for smaller venues and two for more volume. With a amp cab setup, he/she could easily get a much larger cab and smaller cab for smaller venues--but it may not be cheaper, and he/she may not like the tone as much as his/her current amp.