DIY thoughts of the day

A place for DIY project discussions.
Wonfor14
Posts: 217
Joined: Sat May 22, 2021 1:33 pm
Location: London
Has thanked: 225 times
Been thanked: 185 times
Contact:
Great Britain

Re: DIY thoughts of the day

Unread post by Wonfor14 »

I have been playing with some remote control stuff, using RF 432MHz.
I have trouble finding a DEC to 4 bit BCD converter any thoughts, the 74hc147 series is going or gone bye bye to silicon hell (digital lies).

Thanks

User avatar
karatestu
Posts: 5945
Joined: Sun Jan 08, 2017 4:40 pm
Location: North Yorkshire
Has thanked: 1865 times
Been thanked: 1378 times
Great Britain

Re: DIY thoughts of the day

Unread post by karatestu »

Some nice little bamboo boxes at Ikea which are cheap and have some nice joints. The four sides are all non parallel. This one is 33x24x16cm (12.6 litres) so only good for smallish drivers up to about 6.5". Needs a front baffle of course and maybe one of Ikea's bamboo chopping boards could be used. If I was making small conventionally shaped speakers then I would be trying some of these quicker than a rat up an aqua duct.

Edit to add - only £10 each :dance:

https://www.ikea.com/gb/en/p/variera- ... 26053/

Image
DIY FREE ZONE

User avatar
Latteman
Posts: 1220
Joined: Tue Aug 14, 2018 7:20 pm
Location: S. Yorkshire
Has thanked: 553 times
Been thanked: 297 times
Contact:
Great Britain

Re: DIY thoughts of the day

Unread post by Latteman »

Myself and a friend have used these very successfully- Sturdy little boxes

Ps Apart from rendering (painting) I have my speakers finished
These users thanked the author Latteman for the post:
karatestu (Thu Dec 23, 2021 9:12 pm)
Analogue Source -
Denon DP47f- Ortofon mc20 supreme
Ifi Zen Phono
Doug Self balanced Pre amp
Akai 4000DS mk2 R2R
Digital Sources- IfI stream, Ifi Neo idsd Dac; Tidal / Radio Paradise
Amplification Nva 30vdc mono blocks
Speakers Lii Audio F-15 in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources

User avatar
karatestu
Posts: 5945
Joined: Sun Jan 08, 2017 4:40 pm
Location: North Yorkshire
Has thanked: 1865 times
Been thanked: 1378 times
Great Britain

Re: DIY thoughts of the day

Unread post by karatestu »

Latteman wrote: Thu Dec 23, 2021 8:24 pm Myself and a friend have used these very successfully- Sturdy little boxes

Ps Apart from rendering (painting) I have my speakers finished
Are they any good then Peter ? Can you hear the sounds of Sweden?
DIY FREE ZONE

User avatar
Latteman
Posts: 1220
Joined: Tue Aug 14, 2018 7:20 pm
Location: S. Yorkshire
Has thanked: 553 times
Been thanked: 297 times
Contact:
Great Britain

Re: DIY thoughts of the day

Unread post by Latteman »

My friend had greater success- the bass for a small box was impressive
He used 3-4” full range driver
These users thanked the author Latteman for the post:
karatestu (Fri Dec 24, 2021 8:27 am)
Analogue Source -
Denon DP47f- Ortofon mc20 supreme
Ifi Zen Phono
Doug Self balanced Pre amp
Akai 4000DS mk2 R2R
Digital Sources- IfI stream, Ifi Neo idsd Dac; Tidal / Radio Paradise
Amplification Nva 30vdc mono blocks
Speakers Lii Audio F-15 in Open Baffle; Ls6
Weiduka AC8.8- for digital sources
Mini BMU for analog sources

User avatar
karatestu
Posts: 5945
Joined: Sun Jan 08, 2017 4:40 pm
Location: North Yorkshire
Has thanked: 1865 times
Been thanked: 1378 times
Great Britain

Re: DIY thoughts of the day

Unread post by karatestu »

If you only ever listen at low volume then I think a single full range driver is hard to beat.
DIY FREE ZONE

User avatar
karatestu
Posts: 5945
Joined: Sun Jan 08, 2017 4:40 pm
Location: North Yorkshire
Has thanked: 1865 times
Been thanked: 1378 times
Great Britain

Re: DIY thoughts of the day

Unread post by karatestu »

Well, today I have agreed a sale of some of my Avondale bits and bobs and other stuff (all to the the same person) :shock:

Four Canterbury Windings 350va with twin centre tapped secondaries, four Avondale HCR200 high current regulators, four speaker protection modules, five soft start modules. That lot has come to a fair amount.

That just leaves a pair of NCC200 power amplifier boards, a pair of 821A pre amp boards, blacklink speaker cables. Then I have a load of Najm stuff to clear out and if the PL71 impresses then my LP12 and all related faff will be out the door. Can't be doing with it all hanging around.

I am keeping all my Avondale power amp psu boards, TPR4 regulators (pre tracking regs with a capacitance multiplier on the front), four EI transformers (currently powering my nva amps) and ALWSR super regulators. There's more bug I can't be bothered to list it all right now.
These users thanked the author karatestu for the post:
slinger (Tue Jan 25, 2022 9:05 pm)
DIY FREE ZONE

User avatar
Fretless
Posts: 9290
Joined: Wed Nov 12, 2014 12:15 pm
Location: Somewhere in Holland
Has thanked: 1487 times
Been thanked: 2280 times
Netherlands

Re: DIY thoughts of the day

Unread post by Fretless »

Was visiting an old friend today and thought I would take a picture of his self-built speakers to put on here.

They use a 15" Tannoy dual-concentric driver and he runs them through a huge PA amp system.

They do sound very impressive. Punchy, lively and very dynamic. But subtle? Er, no.

Image

Image
These users thanked the author Fretless for the post (total 2):
karatestu (Tue Feb 01, 2022 9:32 pm) • antonio66 (Wed Feb 02, 2022 2:27 am)

Upstairs:
Vinyl
Pro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: P50sa - Cube2 - SSP - LS6+ Sabaj A10a (x2)
Downstairs:
Vinyl
Logic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 - BMU+ Aiyima A07 MAX (x2) + Arcam One
HP: HifiBerry Digi+ PRO + Sabaj A10d
Office:
Allo DigiOne SIG + SMSL M300se + Douk G4 (x2)
Mission 760 + Monolith THX AAA 887
Headphones: German Maestro & AudioQuest

antonio66
Posts: 1006
Joined: Mon Jul 29, 2019 8:16 am
Location: Grimsby/Phnom Penh
Has thanked: 1449 times
Been thanked: 408 times
Great Britain

Re: DIY thoughts of the day

Unread post by antonio66 »

Very impressive speaker build, not everyone wants 'subtle' :character-beavisbutthead:

User avatar
karatestu
Posts: 5945
Joined: Sun Jan 08, 2017 4:40 pm
Location: North Yorkshire
Has thanked: 1865 times
Been thanked: 1378 times
Great Britain

Re: DIY thoughts of the day

Unread post by karatestu »

Yeah it's an unusual shape (which I like) . It looks a bit tombstone or crucifix like, Does he like Black Sabbath by any chance.
DIY FREE ZONE

Post Reply