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Multi-Way Conventional loudspeakers with crossovers

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Old 3rd February 2019, 09:45 AM   #71
beardman is offline beardman  Denmark
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Really fine work..not bad with the Rover cnc...i tried at first to countersink my speaker unit

but it was not good with the massive ash tree i used at first (very unstable front,even with

30mm) much better with 30mm MDF without countersink
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Old 5th February 2019, 09:38 AM   #72
Coasttocoast is offline Coasttocoast  United States
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Quote:
Originally Posted by Juhazi View Post
I am excited to see how you install internal braces and subenclosúre for the mid!
The-Loudspeaker
Juhazi, thanks for following along. Braces, which will include the sub enclosure for the mid, crossover, and plate amp are next up. I have already pre-cut the pieces. I hope I have a plan!
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Old 5th February 2019, 09:46 AM   #73
Coasttocoast is offline Coasttocoast  United States
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Quote:
Originally Posted by beardman View Post
Really fine work..not bad with the Rover cnc...i tried at first to countersink my speaker unit

but it was not good with the massive ash tree i used at first (very unstable front,even with

30mm) much better with 30mm MDF without countersink
Thanks! And I understand about the countersinking.

I’m using 2 layers of 19mm material, countersinking the 18” goes almost all the way through the first layer. But for the look I’m going for I needed them flush.

Still trying to find a vendor to source some custom trim rings for the 10” and 18” drivers. Anyone have a recommendation?
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Old 8th February 2019, 08:18 AM   #74
Coasttocoast is offline Coasttocoast  United States
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Got a little mid week shop time in. The cabinet shop has been really busy for a while, now the guys are pretty much back to leaving at 2:30, so worthwhile for me to get maybe 3 hours in and not be in their way.

Finished up the braces, except for trimming to fit. Each cabinet gets 3 horizontal braces, one on each side of the 10”, which also makes its sub cabinet, and one centered on the 18”.

But main item of the day was putting the 1 1/2” roundover on both vertical sides of the fronts. A good amount of material to cut away, very messy. Kind of hard at this point to see in pics, but really softens up the look. Glad to get this out of the way, and not have to be covered in Medex dust all day doing this on Saturday morning.

This is the biggest bit you can fit into a router, next size up would be a custom bit in a shaper, FYI.

To show sense of size I took a pick with a 55 gallon drum for reference.

6D6F0733-12D7-4841-90FF-07E0320558C4.jpg82528487-5936-4368-A628-AEA2AECD258D.jpg2B1377A9-2CEE-443B-82B8-3CC8B4DD671A.jpg
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Old 10th February 2019, 08:38 AM   #75
Coasttocoast is offline Coasttocoast  United States
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I had the run of the shop again today. Made some good progress

Started out cutting the openings in the second layer of the front baffle. Cut it close with a jig-saw, then used a 1/4” router bit with a roller on the end that traced the CNC cut in the first layer. Now the “box” is complete. All finished Maple interior.

88A5EA44-849F-4340-A94C-01D8B5975EA7.jpeg

Then after fitting and labeling each of the braces I gave them a quick sand with 220 grit. Then into the paint booth for a couple coats of high solids, semi-gloss clear. I’m making every effort to minimize humidity from being able to wreck havoc with the wood.

DF775DF4-5D56-462A-8C70-E983F5267361.jpeg

The clear is dry to the touch in 25 mins, so then started final assembly. I also caulked all the corners with polyurethane.

C4E04377-5FA5-4258-86A4-6FAE43F056C4.jpeg

Start of the private enclosure for the mid

46D6D679-3BD8-43B1-B53C-2365E09550C5.jpeg

A deviation from TG’s build, I added a brace centered on the 18”. Not sure if really needed, especially with 1 1/2” cabinet sides, but didn’t think it would hurt. Also ties into closing the private space for the crossover and plate amp.

F39B3856-21B1-48AA-858F-7B40E65379DA.jpeg

View from the front

FC0409AE-71DD-4B3F-8FC6-CCC10927C2B6.jpeg

Front view of the mid enclosure

FDFC588B-55C9-4221-BD73-39533E0FAA1D.jpeg

All that’s left for woodworking is the two layers that make up the rear panel. The Maple panel is ready to go. But final Medex panel will take some time making the opening for the crossover and plate amp.

2BAD0214-49C5-43EC-AF6B-E4513C9FFDAB.jpeg
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Old 10th February 2019, 09:53 AM   #76
beardman is offline beardman  Denmark
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Really amazing woodwork
i think it is a good idea with brace behind the 18" ,,i wish i have done that,,

Best Bjarne
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Old 11th February 2019, 09:42 AM   #77
Bas Horneman is offline Bas Horneman  Netherlands
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Old 11th February 2019, 01:54 PM   #78
Juhazi is online now Juhazi  Finland
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Well done!
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Old 12th February 2019, 05:42 AM   #79
Coasttocoast is offline Coasttocoast  United States
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Originally Posted by beardman View Post
Really amazing woodwork
i think it is a good idea with brace behind the 18" ,,i wish i have done that,,

Best Bjarne
Thanks for your continued interest and replies.

Adding the brace at the center of the 18” keeps the bracing consistent at +/- 10” between.

The driver shouldn’t “see” the brace as this location aligns with the actual driver brace.
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Old 12th February 2019, 05:43 AM   #80
Coasttocoast is offline Coasttocoast  United States
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Bas and Juhazi thanks for taking the time to comment! Let me know if you think I am missing something.
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