Concrete Cube

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jimbob
Posts: 639
Joined: Wed Sep 26, 2012 8:35 pm
Great Britain

Re: Concrete Cube

Unread post by jimbob » Sat Apr 06, 2019 6:03 pm

Slowly but surely we are getting there. I have a metal fabricator knocking up a 380mm x 380mm x 30mm steel frame with mitred sides for casting the panels. It will probably be sometime next week before it’s done. I would still like to make a rubber mould at some point but I’m in no rush. I have also ordered some weld mesh to set into each panel. I could do with a vibrating table but I will have to make do without for now. Crossover components are ordered too but I need to order the midrange drivers from the doc yet. Oh and I need to look into the best epoxy for bonding the panels.
Squeezebox Touch - Colin Wonfor mini pre - EWA M50 Power Amp - Modified NVA Cube 2 mk1 - SSP MK2 - LS6

NVA P90sa - NVA A60 MK1 - DIY Cubettes - SSC - LS3

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karatestu
Posts: 1911
Joined: Sun Jan 08, 2017 4:40 pm
Location: North Yorkshire
Great Britain

Re: Concrete Cube

Unread post by karatestu » Sat Apr 06, 2019 8:47 pm

Forget the vibrating table. Set up some big ass speakers on top of em and have a party. Should do quite a bit of vibrating :dance:
DIY inspired by Richard "The Doc" Dunn RIP

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howardc1951
Posts: 199
Joined: Thu Jul 12, 2012 10:26 am

Re: Concrete Cube

Unread post by howardc1951 » Sat Apr 06, 2019 10:20 pm

For anyone who might be interested in using granite rather than concrete, a short article from someone who did.
www.diyaudioprojects.com/speakers/Seas- ... -Speakers/

jimbob
Posts: 639
Joined: Wed Sep 26, 2012 8:35 pm
Great Britain

Re: Concrete Cube

Unread post by jimbob » Sat Apr 06, 2019 10:43 pm

I read that article when Colin suggested using granite. I may still make a pair from granite after these concrete ones.
Squeezebox Touch - Colin Wonfor mini pre - EWA M50 Power Amp - Modified NVA Cube 2 mk1 - SSP MK2 - LS6

NVA P90sa - NVA A60 MK1 - DIY Cubettes - SSC - LS3

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karatestu
Posts: 1911
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Location: North Yorkshire
Great Britain

Re: Concrete Cube

Unread post by karatestu » Mon Jun 03, 2019 6:45 am

Any progress here ? :epopc:

Concrete or granite or marble. Going to be fecking heavy. I like the idea but how thick would the cabinet have to be to be strong enough to take an impact ?
DIY inspired by Richard "The Doc" Dunn RIP

jimbob
Posts: 639
Joined: Wed Sep 26, 2012 8:35 pm
Great Britain

Re: Concrete Cube

Unread post by jimbob » Mon Jun 03, 2019 9:06 am

These are very much still on the cards but fitting a new kitchen and other bits of diy have meant they are on the back burner. I will be using 25mm thick concrete. How robust they will be only time will tell. They will be reinforced with rebar.
Squeezebox Touch - Colin Wonfor mini pre - EWA M50 Power Amp - Modified NVA Cube 2 mk1 - SSP MK2 - LS6

NVA P90sa - NVA A60 MK1 - DIY Cubettes - SSC - LS3

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Latteman
Posts: 411
Joined: Tue Aug 14, 2018 7:20 pm
Location: S. Yorkshire
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Re: Concrete Cube

Unread post by Latteman » Mon Jun 03, 2019 9:14 am

I can just about lift a single diy bbc, mdf, ceramic tiles & drivers
RIP Doc
Analogue- Lenco GL59, 10” ARB Carbon arm Grado Reference Prestige 1 MI
Nva Phono 1 (external psu)
Digital Sources- Denon CEOL Piccolo & Fiio x1ii
Amplification-NVA P20, A20 (x2), A60
Speakers- Diy BBCubes on Nva Stands;
Ls6, Ls5; SSP
Mini BMU

jimbob
Posts: 639
Joined: Wed Sep 26, 2012 8:35 pm
Great Britain

Re: Concrete Cube

Unread post by jimbob » Mon Jun 03, 2019 10:04 am

I expect the concrete ones to be ludicrously heavy and a two man job to lift onto stands.
Squeezebox Touch - Colin Wonfor mini pre - EWA M50 Power Amp - Modified NVA Cube 2 mk1 - SSP MK2 - LS6

NVA P90sa - NVA A60 MK1 - DIY Cubettes - SSC - LS3

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Andy-831
Posts: 370
Joined: Mon Aug 07, 2017 8:34 am
Location: Lancs / Yorks Moors
Great Britain

Re: Concrete Cube

Unread post by Andy-831 » Mon Jun 03, 2019 10:45 am

jimbob wrote:
Mon Jun 03, 2019 10:04 am
I expect the concrete ones to be ludicrously heavy and a two man job to lift onto stands.
Note to self...…...Don't visit James the day his concrete speakers are finished :grin: :guiness;
Analogue
301 / 3012 / Shure M75 + Jico SAS
401 / PU7 / AT33ev
Longdog Audio Phono stage (MCj1)
Digital
Vortexbox, SBT / Caiman Seg and Dorado
Cambridge CXC
Amps
Tron Seven Linestage, Quad 44
Quad 303, or Bel Canto Set 40, or NG 300B Set Monoblocks
Speakers
Tannoy GRF Memory.
Tannoy ST100 Supertweeters

jimbob
Posts: 639
Joined: Wed Sep 26, 2012 8:35 pm
Great Britain

Re: Concrete Cube

Unread post by jimbob » Mon Jun 03, 2019 11:04 am

:lol: Andy you sussed me out! You’ll absolutely have to pop round for a listen once I’ve built them. I should have one of Colin’s 50w SECA amps built soon too... :dance:
Squeezebox Touch - Colin Wonfor mini pre - EWA M50 Power Amp - Modified NVA Cube 2 mk1 - SSP MK2 - LS6

NVA P90sa - NVA A60 MK1 - DIY Cubettes - SSC - LS3

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