It's 15s it's is!

[Sean]

On 16/12/2025 at 11:28, BigRedX said:

Most of the time the second cab only takes up additional vertical space. It also has the advantage of raising the upper cab closer to your ears where it is doing some good for being heard rather than your knees.

I agree. And I've gigged two cabs many times where the lower one is just a shelf.

 

At the SE Bash recently we did a non-scientific "test" with one Monaco vertical-mounted on top of one horizontal. We walked around the room listening to just the vertical and then did the same with the both plugged in. It wasn't particularly loud but it was very revealing with that dispersion going on. @stevie will be able to explain it properly but what I got out of it was that now I'm playing in a band where I need to use backline to fill the room, I'll be thinking more about this and probably taking both of them with me just in case. I know one Monaco is amazing but the pair with one turned through 90 degrees was like another dimension. @cetera and @Wolverinebass were there when we were doing it. 

Edited 3 hours ago by Sean

[Beedster]

39 minutes ago, Sean said:

I agree. And I've gigged two cabs many times where the lower one is just a shelf.

 

At the SE Bash recently we did a non-scientific "test" with one Monaco vertical-mounted on top of one horizontal. We walked around the room listening to just the vertical and then did the same with the both plugged in. It wasn't particularly loud but it was very revealing with that dispersion going on. @stevie will be able to explain it properly but what I got out of it was that now I'm playing in a band where I need to use backline to fill the room, I'll be thinking more about this and probably taking both of them with me just in case. I know one Monaco is amazing but the pair with one turned through 90 degrees was like another dimension. @cetera and @Wolverinebass were there when we were doing it. 

That’s really interesting 👍

[LawrenceH]

It's that bottom-end reinforcement. I've wondered before with a good FR cab like the ones LFSys is building, whether rather than stacking two complete cabs and accepting lobing there's sense in having the pad on the compression driver variable, so you could switch that out to pair with a second, (cheaper) woofer-only model that just had the low-pass filter rom the crossover. Of course that depends on the tweeter using a pad and having the headroom, but they usually do.

 

Even without a second cab model, you could potentially make the comp drivers switchable to achieve the same outcome.

[Chienmortbb]

38 minutes ago, LawrenceH said:

It's that bottom-end reinforcement. I've wondered before with a good FR cab like the ones LFSys is building, whether rather than stacking two complete cabs and accepting lobing there's sense in having the pad on the compression driver variable, so you could switch that out to pair with a second, (cheaper) woofer-only model that just had the low-pass filter rom the crossover. Of course that depends on the tweeter using a pad and having the headroom, but they usually do.

 

Even without a second cab model, you could potentially make the comp drivers switchable to achieve the same outcome.

I am probably letting too much out, but this was something that @stevie @Phil Starr and I have discussed in the past and on a trip to LFSys Worldwide Headquarters, we tried it out on a couple of identical cabs, with no horn on the lower cab but with all else the same. It did not sound that good.

[Bill Fitzmaurice]

Running a second no horn cab below adds 6dB to the low frequency sensitivity. For it to sound right requires turning up the HF horn by 6dB, if it has that ability. 

Quote

I've wondered before with a good FR cab like the ones LFSys is building, whether rather than stacking two complete cabs and accepting lobing

Lobing isn't an issue if the two cabs are built mirror imaged, so you can set them with the HF horns adjacent rather than separated. I don't see manufacturers doing that, for inventory reasons, but it's simple enough if you build your own. 

[LawrenceH]

47 minutes ago, Chienmortbb said:

I am probably letting too much out, but this was something that @stevie @Phil Starr and I have discussed in the past and on a trip to LFSys Worldwide Headquarters, we tried it out on a couple of identical cabs, with no horn on the lower cab but with all else the same. It did not sound that good.

Oh that's a shame, was that with matched sensitivity on the horn to compensate? Might work better with the smaller cabs, assuming they use the same HF driver, might have more leeway.

 

 

Stacking speakers in mirror when vertical seems less than ideal on a cramped stage because it takes the tweeters lower. Plus they still don't add entirely coherently. Splitting hairs on bass guitar I guess. But then that's what really good speakers are about!