Amp to cab question.

[charmander]

Hi guys, I have a 65 Alamo Paragon bass head, which is awesome but it's acting a little funny. It really should go into a tech but I don't have the funds right now for that, and my father in law is an electrical engineer so I just thought y'all might know where I should start with this.

So the issue is this: I have a 1x15 cab and a 1x12, both are 8 ohm (the impedance the amp is rated for). If I plug into the 12 everything works as it should, and if I plug the 15 into the extension jack everything works. However, if I plug into JUST the 15 the sound is almost inaudible, even with the amp volume on 10. Any ideas why that would be? I have a crate v50 also that plays great through both cabinets so the cabs are definitely good.

Thanks for any help.

[Holy Schnikes]

Not sure what's up with the 1x15 cab volume loss, that's strange indeed. One thing to note though: In the future, when running both 8 ohm cabs simultaneously, you need to set the amps's output to 4 ohms or use dual 4 ohm outs to avoid a mismatch.

[charmander]

Not sure what's up with the 1x15 cab volume loss, that's strange indeed. One thing to note though: In the future, when running both 8 ohm cabs simultaneously, you need to set the amps's output to 4 ohms or use dual 4 ohm outs to avoid a mismatch.

Right, I would but supposedly (as accurate as info on 50 year old amps is) these paragons are designed to have 8 at both outputs, something in the circuit that I don't understand.

[ALLisNOISE]

When only using one cab, make sure that you're plugging into the same jack that the 12 was plugged into.
I had an amp that had two jacks, but you had to plug into the left one first, or the right one wouldn't work.
That could be what's happening here.

[charmander]

When only using one cab, make sure that you're plugging into the same jack that the 12 was plugged into.
I had an amp that had two jacks, but you had to plug into the left one first, or the right one wouldn't work.
That could be what's happening here.

I wish it was that, fortunately the amp sounds badass anyway. I want to get a bigger cab to run with the 15 so I hope I can figure this out because who knows if the Alamo would like a 4x12 or something.