New speaker project

PanzerLord · 11th May 2004, 03:38 PM

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 · 23rd May 2004, 06:55 PM

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 · 23rd May 2004, 06:59 PM

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

brentslone · 25th August 2004, 11:52 AM

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

TIA,
Brent

Kittle · 25th August 2004, 05:56 PM

This work ?

Lionel · 25th August 2004, 06:39 PM

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

brentslone · 25th August 2004, 08:06 PM

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

Lionel · 25th August 2004, 08:24 PM

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

cph2000 · 18th September 2004, 01:35 PM

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

25th August 2004, 11:52 AM	#4
brentslone diyAudio Member Join Date: Aug 2004 Location: Atlanta, GA	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

18th September 2004, 01:35 PM	#9
cph2000 diyAudio Member Join Date: Feb 2004 Location: copehagen	I would verymuch like to see an x-over with the neo3 and neo8 !!! __________________ .

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25th August 2004, 05:56 PM	#5
Kittle diyAudio Member Join Date: Jun 2004 Location: KC	This work ?

25th August 2004, 06:39 PM	#6
Lionel diyAudio Member Join Date: Jan 2004 Location: Saint Etienne	What type of configuration is it ? MTM, TMM... Thank you.

25th August 2004, 08:06 PM	#7
brentslone diyAudio Member Join Date: Aug 2004 Location: Atlanta, GA	MTM. Several of the crossovers I've seen for the NEO include 10 microHenry inductors. Very low inductance...

25th August 2004, 08:24 PM	#8
Lionel diyAudio Member Join Date: Jan 2004 Location: Saint Etienne	Thank you for your answer but my question was for PanzerLord.

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