Royd A7s

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luckyredfish
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Royd A7s

Unread post by luckyredfish »

I have just discovered a pair of Royd A7s in a box in the loft . Problem is the crossovers and binding posts are missing . All the drivers are present and correct and the cabinets are in good nick . The crossovers for these are like hens teeth so I was wondering if they would be suitable for turning into home made Cubettes . Probably line the cabinet with steel or ceramic tiles .
Doc , can you advise me what value of cap I should be trying in the tweeters and if you think the drivers may need doped .
If I get a decent result I will probably go further up the NVA speaker range when I have upgraded my A20 to A40s to go with my P50sa .

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Dr Bunsen Honeydew
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Re: Royd A7s

Unread post by Dr Bunsen Honeydew »

3.3mfd to start. Full range to bass mid and listen, may be horrible then the ears take over - good learning process.

luckyredfish
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Re: Royd A7s

Unread post by luckyredfish »

Thanks Doc , I've ordered the parts . Should be interesting (-:

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Latteman
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Re: Royd A7s

Unread post by Latteman »

Are the Royd drivers doped- I used a set from Minstrels that are factory doped.
Check my post on diy cubes

viewtopic.php?f=17&t=49516
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

luckyredfish
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Re: Royd A7s

Unread post by luckyredfish »

Thanks Peter , I had a couple of pairs of Minstrels a while back and if I remember correctly , yes the drivers were doped . I'm going into the loft in a minute and can check the A7s . I knew there were a couple of threads on DIY cubes on the forum so thanks for the link .
Maybe just a bit of fun or something more serious if I get good results .

luckyredfish
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Re: Royd A7s

Unread post by luckyredfish »

The drivers aren't original by the looks of things . Tweeters are original . I have cut ( botched (-: )the cabinets to size and lined some parts with ceramic tiles . Unfortunately my joinery skills are very much lacking )-: More to do tomorrow .

What do I use to dope the speakers Doc . Sorry I forgot :roll:

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Dr Bunsen Honeydew
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Re: Royd A7s

Unread post by Dr Bunsen Honeydew »

Rubber (normally synthetic) based glue is easiest, then spray with Plastidip.

luckyredfish
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Re: Royd A7s

Unread post by luckyredfish »

Thank you .

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Re: Royd A7s

Unread post by luckyredfish »

Just about finished . One more question . Are caps directional ?

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Latteman
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Re: Royd A7s

Unread post by Latteman »

I hope not
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

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