60 Degree DIY Mid Hi - AKA PM60

Hey everyone, I've only just stumbled across this build from Peter and thinks it's amazing how much detail there really is and can't wait to start building!

I also wanna say thanks to Peter for helping me out this morning with some info.

I've just finished drawing up the plans in sketchup as it really allows me to check out the design before i build it and I've also rendered a few pics to show what finish I might be going for.

I've attached the sketchup file for whoever wants it.

All the best
Sal
Hi there,

I'm looking for the plans, but don't have sketchup ... Any ways to have them in pdf please?
 
Hi Everyone,

I have started work on the 60 degree version. Don has helped once again and provided some preliminary CAD drawings. A bit of work is still needed to simplify the construction and finalize the dimensions.

The original DIY was a prototype designed to test the design and concept; this time I’m planning to make a “proper box” and provide some more construction details and drawings from the start.

The 60 degree version will be about 20mm deeper than the 90 degree version because of the extra depth of the Eighteen Sound XT1464 horn. I may also have to make the box about 8mm wider. To offset the slight increase in size I plan to cut the back corners off. This is mostly cosmetic a should make the box look smaller from most angles.

It’s likely that the 60 degree version will be used in pairs, accordingly I have done a SIM for two boxes at the AES peak power (+6 dB on the RMS rating). To do this I modelled one box in half space.

I thought it would be appropriate to start a new thread which is more focused on the construction of the box unlike the original DIY Mid Hi thread – Bennett I hope that’s OK.


I have provided some SIM’s using the RCF and the B&C's 12NDL76. It shows the power response (dark line) and the the SPL corrected for directivity (grey line).

Note: the low frequency section of SPL curve is my best guess; Horn Response can not model the directive of the reflex ports

Peter
Hi peter, do you have the plan of the other face please?
 
Hello all,
A lot of people are asking for the latest plans, here are the PM90 plans from Max Warasila which are the most current and very well done. While they are posted in the message thread here they are again for convenience.
The only difference for the PM60 would be the baffle cutout for the horn.
 

Attachments

Hello all,
A lot of people are asking for the latest plans, here are the PM90 plans from Max Warasila which are the most current and very well done. While they are posted in the message thread here they are again for convenience.
The only difference for the PM60 would be the baffle cutout for the horn.
Hi Don, thanks for this, this is gold to me.
Do you happen to have the dxf file by any chances??
 


Write your reply...