Amp to Get The Best Out of LFSys Monza

[Obrienp]

56 minutes ago, Chienmortbb said:

I believe that the early ones had a smaller port and crossed over at  about 2KHz. @stevieis using a different compression driver now that allows the crossover frequency to be lower. Mine is an early one. 

I wasn’t aware of that. I’ll have a look at them to see if the ports are different. I won’t be able to tell about the crossover, although I suppose I should be able to hear the difference. The horns look the same but that doesn’t necessarily mean they have the same compression model driver attached to them. It would be a bit too much hassle to remove the grills and take the drivers out to see if they are the same.

[Stealth]

There quite different cabs The Monza is fairly “flat” as in uncoloured whereas the BF two 10 is more old school vibe and sounds great when pushed in a “Rock” environment. I used to use a U700 with 2 BF two 10 and the was loud a hell. I think you might need to go one way or the other cab wise.. Or swap them both for a Super Twin 

[stevie]

7 hours ago, Obrienp said:

I wasn’t aware of that. I’ll have a look at them to see if the ports are different. I won’t be able to tell about the crossover, although I suppose I should be able to hear the difference. The horns look the same but that doesn’t necessarily mean they have the same compression model driver attached to them. It would be a bit too much hassle to remove the grills and take the drivers out to see if they are the same.

 

The port size was increased from 4" to 5" some time ago, while the lower crossover point is a recent development, made possible by the adoption of a more powerful compression driver. These are small, incremental improvements, which the average user is unlikely to notice. The sound of the cabs hasn't changed and the larger port will only make itself felt at extreme volumes. 

 

The changes from Silverstone to Silverstone II were enough to warrant renaming the cab. That's not the case with the Monza - or the Monaco for that matter, which has also benefited from incremental improvements over time.

[Chienmortbb]

11 hours ago, stevie said:

The changes from Silverstone to Silverstone II were enough to warrant renaming the cab. That's not the case with the Monza - or the Monaco for that matter, which has also benefited from incremental improvements over time.

I have to say that my Monza is not lacking in any way. It is a very early one and  still rocks my socks.  

[Obrienp]

On 03/06/2025 at 12:11, Chienmortbb said:

I believe that the early ones had a smaller port and crossed over at  about 2KHz. @stevieis using a different compression driver now that allows the crossover frequency to be lower. Mine is an early one. 

I forgot about this until now. I haven’t taken the grills off my Monzas but I did a rough measurement against the grill. Not very accurate because both ports seem to be about 12mm, which is almost 5”. I suspect a more accurate measurement would confirm they are both 5”. This makes sense as I bought the second Monza only a few months ago.  I am assuming, therefore, that mine have the lower crossover as well. They certainly work well together.

 

I have an outdoor gig coming up in a couple of weeks, so I will be able to give them some real welly. I can’t wait to hear how the rig sounds at volume.