Roland Cube 100 ???

[bassartist]

I have the Roland CB 100 and I bought an Eden EX 112 extension cab to go with it. On it's own, the Roland barely gets over a moderately loud drummer--and that's pushing the amp hard. But with the extension cab, no problem. The Eden is a 4 ohm cab, and I believe that that is the key---most people who try an 8 ohm cab aren't impressed. To answer your question directly, you lose wattage, unlike most other amps. But the added speaker area more than makes up for the wattage loss.

Oldcatfish, I am looking at an eden EX112 as well, but i was looking for a 8 ohm per the manufacturer's suggestion, but I see you had a 4 ohm. Will the 4 ohm not damage the roland cube 100? How is the lowend and volume affected with the eden?

 

[HaphAsSard]

i was looking for a 8 ohm per the manufacturer's suggestion, but I see you had a 4 ohm. Will the 4 ohm not damage the roland cube 100?

The manufacturer says 8 Ω *maximum*. The extension cab out of the Roland Bass Cube 100 is in series, so any cab connected to it lowers the power that the amp section puts out.
In this case, as opposed to the massively more common parallel connections found in (solid-state) bass heads/cabs/expandable combos, the less ohms the better*: heck, if you had a two-driver cab with 4-ohm speakers wired internally in series for a total 8-ohm load, or an 8-ohm cab with four 8-ohm drivers wired in series-parallel, you might even consider adding an all-parallel switch to bring said cab down to 2 ohms in order to use it specifically with the Roland combo.
Hence Roland's suggestion. In other words, in this case you wouldn't break anything no matter what impedance the extension cab would be, because the total load presented would always be higher than that of the internal driver alone, which the amp can obviously take, but a 12- or 16-ohm ext. cab would increase the load so much, and make the power so little that the stack would be too quiet and essentially not worth it.
"8 ohm maximum" here means "if you use 12 or 16 you might as well turn down the volume knob with the combo alone", as opposed to parallel speaker out jacks reading "8 ohm minimum" which we're used to seeing, which means, as we all know, "anything lower than 8 will fry the amp, don't say you hadn't been warned".


*And, as in all cases, the more efficient the better.

 

[bassartist]

The manufacturer says 8 Ω *maximum*. The extension cab out of the Roland Bass Cube 100 is in series, so any cab connected to it lowers the power that the amp section puts out.
In this case, as opposed to the massively more common parallel connections found in (solid-state) bass heads/cabs/expandable combos, the less ohms the better*: heck, if you had a two-driver cab with 4-ohm speakers wired internally in series for a total 8-ohm load, or an 8-ohm cab with four 8-ohm drivers wired in series-parallel, you might even consider adding an all-parallel switch to bring said cab down to 2 ohms in order to use it specifically with the Roland combo.
Hence Roland's suggestion. In other words, in this case you wouldn't break anything no matter what impedance the extension cab would be, because the total load presented would always be higher than that of the internal driver alone, which the amp can obviously take, but a 12- or 16-ohm ext. cab would increase the load so much, and make the power so little that the stack would be too quiet and essentially not worth it.
"8 ohm maximum" here means "if you use 12 or 16 you might as well turn down the volume knob with the combo alone", as opposed to parallel speaker out jacks reading "8 ohm minimum" which we're used to seeing, which means, as we all know, "anything lower than 8 will fry the amp, don't say you hadn't been warned".


*And, as in all cases, the more efficient the better.

ok, Ive just read so much about about 4ohm, 8ohm, etc... I just don't want to blow anything. Thanks for your input.

 

[danieledanny]

hi,it's good for play outdoor?solo?

 

[Rainbird]

I have the CB100 paired with a TC Electronics (8ohm) RS112, and I can confirm it is much louder with the added cab. ,, and sounds great btw.