.zma & .frd for SS 18W/8545-00

I wonder why you'd need to model it at all, since Troels Gravesen has done most of the heavy lifting already:

Compact-Studio-Monitor

The 00 actually looks easier than the K00 he used.

Once you have defined the bass filter, the tweeter just falls into place:

715080d1542008118-restoring-monitor-audio-r300-bookshelf-speakers-steen-duelund-1-414-root-2-png


Here at 3kHz.
 
I wonder why you'd need to model it at all, since Troels Gravesen has done most of the heavy lifting already:

Compact-Studio-Monitor

The 00 actually looks easier than the K00 he used.

Once you have defined the bass filter, the tweeter just falls into place:

715080d1542008118-restoring-monitor-audio-r300-bookshelf-speakers-steen-duelund-1-414-root-2-png


Here at 3kHz.


Frankly, i've got no idea what Im doing.. Trying to make a crossover for my 18W8545 + D2905/97000 by modifying his Amish build for the enclosure I want to use.

The crossover tutorial said to gather FRD and ZMA files, so I was planning to draw up his filter, load files and figure it out from there 🙂
 
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What you need is a little free program that will trace the graphs for you, like this: FPGraphTracer : fprawn labs

Sometimes if the multitude of lines confuses the program, it helps to copy it to MS Paint and zoom in and erase some of the off-axis or even graph grid lines you don't want to copy before you paste it into the tracing program.

See post #7 in this thread for some more info. And maybe give that whole thread a thorough read too.
 
I wonder why you'd need to model it at all, since Troels Gravesen has done most of the heavy lifting already:

Compact-Studio-Monitor

The 00 actually looks easier than the K00 he used.

Once you have defined the bass filter, the tweeter just falls into place:

715080d1542008118-restoring-monitor-audio-r300-bookshelf-speakers-steen-duelund-1-414-root-2-png


Here at 3kHz.

Thanks for your comment. My main goal here is to learn from the process, so I'm getting more and more curious the more I think about your post.

Can you elaborate the process you are thinking about a little more? If understand what you are saying, I could use the pictured graph to design the bass-part of the crossover, and then add the tweeter from there. Is that correct? Sound really interesting!

TIA