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Post by Deleted on Apr 11, 2016 7:12:08 GMT
I'm sure Brinkmann did some variants on this idea. I also remember another German maker but the name escapes me.
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Post by Deleted on Apr 11, 2016 11:35:43 GMT
I tried two differ finishes by experimenting on the circular cut-outs from the bass units. Option 1: Clear lacquer. This gave a nice shine when buffed up but it did nothing for the grain. Wood has a natural beauty that was lost on this. Option 2: Danish oil. Not much shine, but you can get a decent sheen by reapplying and buffing. Most importantly it brought out the grain. An easy choice then: Danish oil it is! One cabinet done so you can see the "before and after"  |
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Post by MikeMusic on Apr 11, 2016 11:40:01 GMT
Has to be black ! Will sound better too  |
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Post by Deleted on Apr 11, 2016 11:59:36 GMT
Has to be black ! Will sound better too Just for you!  You might be right about sounding better though. Cubettes are a tall order to get close to sonically. |
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Post by MikeMusic on Apr 11, 2016 13:23:18 GMT
I can hear the difference from here !
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Post by Deleted on Apr 11, 2016 16:18:16 GMT
Crossovers:  |
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Post by Deleted on Apr 11, 2016 16:20:07 GMT
Crossover in situ. I re-used the cutouts to mount the components.  |
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Post by Deleted on Apr 11, 2016 16:21:20 GMT
Lids on:  |
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Post by Deleted on Apr 11, 2016 16:23:57 GMT
Drivers in. Grilles will be glued later, but that's basically it, folks. I may tweak further to get the desired sound, but I will run them in first.  |
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Post by MikeMusic on Apr 11, 2016 17:07:33 GMT
Love the reuse of the cutouts. Looks good too
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Post by Deleted on Apr 11, 2016 17:21:53 GMT
Thanks, Mike. They sound very clear and the treble is dfntely very nice indeed. Early impressions are telling me that the cabinet still needs damping. Richard Dunn expected they would still need mass as well as stiffness. I'll ponder whether to add more carbon fibre or just add steel plate. I really wanted something lighter to move around than the Cubettes. More listening and thinking needed. At least the crossover choice seems to be ok.
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Post by Sovereign on Apr 11, 2016 21:44:55 GMT
Well done mate
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Post by Deleted on Apr 11, 2016 22:00:37 GMT
Cheers, James.
It's the first thing I've made for myself. I've refurbed plenty but it's not the same. I just know I could do so much better next time, so I don't think it will be long before I do something else.
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Post by John on Apr 12, 2016 4:30:45 GMT
Great work
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Post by MartinT on Apr 12, 2016 6:25:29 GMT
Nice project, Andrew. I take it you're leaving the air volume alone (no damping) and working only on the cabinet walls? Seems the right approach.
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Post by Deleted on Apr 12, 2016 7:26:42 GMT
That's right, Martin. From my very first experiments back in 1988, taking wadding out of speakers gave huge gains in clarity and life. Of course, there were downsides in terms of ringing and sometimes hardness. Nowadays I've learned that there are other ways to kill the resonance without killing the sound and sucking the life out of the music.
I realise there are loads of great (and lively) speakers out there with wadding inside. Snells Spring immediately to mind. Often it's not as simple as just ripping out wadding, so if a speaker is doing it for you, then I'd only recommend dabbling if the speaker is easily returned to original condition.
My little "Cubanitas" already have "something" I value in their sound, I don't think I'm far away from having something special, so I'm reluctant to add lots of mass. Maybe your aluminium tip could work, especially if I go the Naim route and mount it on something like neoprene.
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Post by MikeMusic on Apr 12, 2016 7:59:01 GMT
If I find retirement gives me time to fiddle around you may have tempted me into speaker molesting
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Post by Deleted on Apr 12, 2016 9:54:48 GMT
I think my next project might be in acrylic, but I'd like to make my own cabinets. I'm pondering a triangular shape as viewed from front or back. Two bass drivers mounted into the sloping sides (one per side) and a front facing tweeter. All drivers the same as I used on this build. Sorry to disappoint, but if I do these, they will be in white acrylic Still work to do on my current project first. The weak point is still the thin base, but I have a neat idea........ More in a week or two. |
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Post by jimbob on Apr 13, 2016 9:29:37 GMT
I have only just come across this thread and it's been a fascinating read. A pair of stacked cubettes sounds like a very interesting idea.
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Post by Deleted on Apr 13, 2016 19:44:59 GMT
Cheers, Jimbob. It was fun all the way. As fab as Cubettes are, the real genius for me was finding those gorgeous dovetailed boxes and seeing another use for them. I wish I'd thought of it. Although I just hate the word "re-purposing", I really love the concept and this is one of the best examples.
For a novice, a clutz, or somebody with limited dexterity (I can comfortably manage all three!) the removable top makes them a DIY doddle. I can't imagine anyone struggling to build a DIY pair.
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