[PROJECT] 4 way crossover with signal detect

[Yoshy]

Hello,
I have just finished the cross-over for my 4 way active speaker (my own "ultimate speaker").

The input is a XLR followed by a very common instrumentation amplifier before entering the real crossover, it is buffered and split to the signal detection circuitry. The outputs should be all in phase.

I'm asking for comments before I send this out to the fab. Eagle/Schematic can be downloaded here.

The crossover is design as so (I'm sorry for abusing ASCII-Art):

             +-----------------+
 INPUT ----> | LOW-PASS 90Hz   | ----> SUB
        |    +-----------------+
        |
        |    +-----------------+          +----------------+
        \->  | HIGH-PASS 90Hz  | -------> | LOW-PASS 900Hz | ----> Lower Voice
             +-----------------+    |     +----------------+
                                    |
        /---------------------------/
        |
        |    +-----------------+          +----------------+
        \->  | HIGH-PASS 900Hz | -------> | LOW-PASS 6kHz  | ----> Upper Voice
             +-----------------+    |     +----------------+
                                    |
        /---------------------------/
        |
        |    +-----------------+
        \->  | HIGH-PASS 6kHz  | ----> Tweeter
             +-----------------+

Thanks,
Phil

 

[Macleod]

Is this LR4? No delay compensation for mid/high?

I will do something like this soon.

How is the weather in Canada?

 

[Yoshy]

Is this LR4? No delay compensation for mid/high?

I will do something like this soon.

How is the weather in Canada?

Yeah I'm thinking about the delay; I'm not sure I'll fix it in the speaker or if I want to fix it in the signal - if you know what I mean. Let me know how your project is going, I'm very interested.

I'm in Montreal and the weather is nice; it's not too cold, which is a surprise.