Make Rumble 800c a cab

[Capt Tinnitus]

Greetings. New here, I'm sure it's been discussed but I wanted to make a thread anyway.

Can I take an old repaired Rumble 800c and turn it into a cab for my Rumble 800c?

How?

Will that give me the full 800w or will it open a portal into some Fender netherworld where I'll be doomed to play through my Rumble for an agonizing eternity at some midweek open mic?

 

[blr2]

You can remove the amp and wire the speakers directly to a connector at the back of the enclosure.

 

[agedhorse]

By far the best way to use 2 of those combos together is to link them by running the effects send if the master amp (the one you plug your bass into) into the effects return of the slave amp.

Then you don't run the risk of breaking either amp by doing something stupid,

 

[agedhorse]

You can remove the amp and wire the speakers directly to a connector at the back of the enclosure.

Just why do this when the linking is already built into both combos???

The OP said the second one was already repaired!

 

[blr2]

If the second amp is working properly, sure, this is the best way to use them together. Just that the OP was asking how to turn the combo into a cab.

 

[agedhorse]

Perhaps the OP didn't understand the question he was asking, or didn't understand the feature set on his amps? Happens all the time.

 

[Capt Tinnitus]

Perhaps the OP didn't understand the question he was asking, or didn't understand the feature set on his amps? Happens all the time.

It is quite possible I don't understand. Not understanding is kinda my thing.

Can a Rumble 800c be set up to be a cab for another 800c to produce 800w?
I don't want stereo. I want my 800 to live up to its potential

 

[blr2]

Do both amps work properly?
If the answer is "yes", follow what agedhorse wrote above.
If the answer is "no", follow my advice or repair the second amp and use the method suggested by agedhorse.

It cannot be explained much simpler than that.

 

[Capt Tinnitus]

Do both amps work properly?
If the answer is "yes", follow what agedhorse wrote above.
If the answer is "no", follow my advice or repair the second amp and use the method suggested by agedhorse.

It cannot be explained much simpler than that.

Thank you good sirs

 

[ardgedee]

It is quite possible I don't understand. Not understanding is kinda my thing.

Can a Rumble 800c be set up to be a cab for another 800c to produce 800w?
I don't want stereo. I want my 800 to live up to its potential

Your goal is not to get the most power out of your amp. Your goal is to optimize volume with the resources you have. These are not the same thing.

Connecting both amps the way @agedhorse describes will optimize volume with the least effort on your part.

 

[Capt Tinnitus]

Ok....so now what about the impedance/ohms setting
::ducks::

 

[blr2]

Ok....so now what about the impedance/ohms setting
::ducks::

Just do what agedhorse told you and don't worry about it.

 

[Capt Tinnitus]

Just do what agedhorse told you and don't worry about it.

Copy that
Thanks
Will be repairing old amp and giving it a go soon

 

[blr2]

Will be repairing old amp and giving it a go soon

Just don't try to do it yourself

 

[agedhorse]

Copy that
Thanks
Will be repairing old amp and giving it a go soon

You said in your first post that it was already repaired????

THIS is why we need accurate information, clearly there is a disconnect here.

 

[Capt Tinnitus]

You said in your first post that it was already repaired????

THIS is why we need accurate information, clearly there is a disconnect here.

I was posting from the future.
I'm back now, thanks for holding everything in place for me

 

[blr2]

This whole thread was a waste of time. A lesson learnt.

 

[Stylee Mousse]

'Twas a small one tho.

Plus posting from the future!

 

[toughluck]

First thing: the internal speaker is rated for 300 W.
Second thing: 800 W vs. 300 W is just a +4.26 dB difference

There are two scenarios you can have:
1. You have two working Rumble 800 combos. Use the FX send jack from the master amp to the FX return jack on the slave amp. Set all the dials the same on both.
2. You have one working Rumble 800 combo, the other has a faulty amp and you want to use it as a passive cab: Use the Speakon output from the working combo. On the cab, you'll have to connect speakers to the connector, at least both woofers. Set the output impedance on the combo to 4 Ω and make sure not to exceed the maximum power of the cab (300 W).

The first way will use 600 W out of 1,600 W total. The second one will use 600 W out of 800 W total.

Neither way allows you to get the full potential of the Rumble 800 combo amp. AND THAT'S PERFECTLY OKAY!

 

[ardgedee]

2. You have one working Rumble 800 combo, the other has a faulty amp and you want to use it as a passive cab: Use the Speakon output from the working combo. On the cab, you'll have to connect speakers to the connector, at least both woofers. Set the output impedance on the combo to 4 Ω and make sure not to exceed the maximum power of the cab (300 W).

If OP does this without fully and completely disconnecting the speaker from the amp in the broken combo, there will be two broken combos.