New speaker project

[PanzerLord]

Just started a new speaker project (instead of a power-amp I`ve been designing and re-designing for a while).

Case volume: 70 litres
-3 db: ca. 30Hz

Just posting the crossover (got some help with the low-pass part), the Bohlender Græbener NEO8 transducer is purely resistive wich makes things a lot easier. I`ll post the crossover schematic for now. The transducer response will be measured within a week or two, denpending on the arrival of the filter components and the microphone.

Sorry about the norwegian comments on the picture, oh, and it`s 12dBoct v/1000Hz, not 800.

 

[PanzerLord]

I chose Vifa PL18W009-08 instead of the SEAS (for a variety of reasons, mainly crossover issues).

Here is the simulated result, XO freq is 700Hz:

 

[PanzerLord]

Here`s the XO, Vifa drivers have an offset at 25mm into baffle, ref. NEO8.

 

[brentslone]

Souce for uH inductors?

I'm working on a notch filter for a NEO8PDR and need a 10uH inductor. Does anyone have a source?

TIA,
Brent

 

[Kittle]

This work ?

 

[Lionel]

What type of configuration is it ?
MTM, TMM...
Thank you.

 

[brentslone]

MTM. Several of the crossovers I've seen for the NEO include
10 microHenry inductors. Very low inductance...

 

[Lionel]

Thank you for your answer but my question was for PanzerLord.

 

[cph2000]

I would verymuch like to see an x-over with the neo3 and neo8 !!!