Band-pass filter comparison

[presscot]

I read the paper of Robert M. Bullock, III and it presented two different types of band-pass filters. In the paper, it calls the transformation and the cascaded band-pass filters.

I admit that I did not fully understanding them. Consequently, I'd like to ask for advice about what the differences are between them, as well as the pros and cons.

 

[ejp]

Citation? Which paper? Where can we get it? I've found the titles of at least three papers on this topic by Bullock. Full yext of one of them is here https://sdlabo.jp/archives/Passive Three-Way All-Pass Crossover Networks.pdf but your diagrams don't appear in it.

 

[presscot]

Citation? Which paper?

The Analysis and Synthesis of Passive Constant Power and All-Pass Three-Way Crossovers

 

[AllenB]

I can show them 3 different ways, exact same components using a real woofer impedance.

 

[ejp]

The Analysis and Synthesis of Passive Constant Power and All-Pass Three-Way Crossovers

Where can we get it?

 

[witwald]

What happens if all the inductor DCR values are set to zero? I'd be interested to see if the three frequency response functions line up more closely.

 

[presscot]

Where can we get it?

It’s available on Google in pdf format.

 

[ejp]

I found the link I provided. It doesn't contain those pictures. But if you want to keep it a secret, go right ahead.

 

[AllenB]

What happens if all the inductor DCR values are set to zero? I'd be interested to see if the three frequency response functions line up more closely.

Good call 😉 but they don't. It's similar to what you see.

 

[ejp]

Reducing the series resistance increases the Q. It doesn't change frequencies.