Adding a tweeter cab 8 ohm to a 215 4 ohm W/ TUBE amp.

[Rockbobmel]

So I am pretty sold on keeping my Berg NV215 but I want to add some highs.

I ran it before with a biamp GK800RB, which has a separate tweeter amp.

Experimenting, for 10 minutes, I ran another 215 (4ohm) cab, with my Sun 2000S off the 4 ohm tap (The brown wire that comes from the OT) then I plugged a medium size Klipsch center channel speaker (8ohms) out of the 215's cab parallel jacks.

The sound was very balanced between the 2 cabs. Since the Klipsch rolls off high, there was no distortion. Just more presence.

A lot of 4 ohm cabs have tweeter/mid/ etc speakers included in them (Including the Berg has a 6").

Is it safe to run this cab on a tube amp this way?

 

[Downunderwonder]

I would be more worried about the extension cab getting overpowered than anything else.

 

[Rockbobmel]

It seems to filter out itself.

 

[Rockbobmel]

Maybe lower efficiency ?

 

[Rockbobmel]

I tried this with my Reeves C225 last night. It seemed fine except the overall volume dropped a little. I switched between the 2 ohm and 4 ohm and the 4 ohm was slightly louder. The way we were set up (open ended pavilion), I didn't need more high end, so I disconnected it. It worked so well with my GK800RB that had both bi-amp and a variable crossover, I thought I might benefit from this arrangement.