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Post by Deleted on Oct 3, 2019 18:43:34 GMT
I'm 90% sure I have one on an old Hi Fi World. But that's about 140 issues I'd have to look through. All I can recall is that it is a Noel Keywood review and that the speakers were made of Resin Rock. When are they from, late 1990s? That would narrow it down a bit for me. Why can’t you just have old porn mags like a normal bloke 😂😂😂 Well I don't have any porn mags........................Oh...Hang on, I'm not normal!  |
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Bigman80
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Post by Bigman80 on Oct 3, 2019 18:45:26 GMT
Why can’t you just have old porn mags like a normal bloke 😂😂😂 Well I don't have any porn mags........................Oh...Hang on, I'm not normal! I only looked mid 1992 to late 1993. I can look later. Did I get the dates wrong? |
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Bigman80
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Post by Bigman80 on Oct 3, 2019 18:46:49 GMT
Incidentally somebody’s selling the resin rock cabinets on EBay for just £25. I think they are in Crewe.
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Post by Deleted on Oct 3, 2019 18:50:13 GMT
Incidentally somebody’s selling the resin rock cabinets on EBay for just £25. I think they are in Crewe. Really? |
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Post by Deleted on Oct 3, 2019 18:54:24 GMT
Incidentally somebody’s selling the resin rock cabinets on EBay for just £25. I think they are in Crewe. Theyre broken. Quite irreparable |
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Post by Deleted on Oct 3, 2019 18:55:02 GMT
Well I don't have any porn mags........................Oh...Hang on, I'm not normal! I only looked mid 1992 to late 1993. I can look later. Did I get the dates wrong? 1992 apparently. Theres not much info on them. |
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Bigman80
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Post by Bigman80 on Oct 3, 2019 18:55:34 GMT
Incidentally somebody’s selling the resin rock cabinets on EBay for just £25. I think they are in Crewe. Really? Great DIY project for someone. If the crossovers and drivers are still out there you could probably put a pair of 860s together! |
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Bigman80
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Post by Bigman80 on Oct 3, 2019 18:55:58 GMT
Incidentally somebody’s selling the resin rock cabinets on EBay for just £25. I think they are in Crewe. Theyre broken. Quite irreparable I didn’t look closely |
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Post by Deleted on Oct 3, 2019 19:04:07 GMT
I don't even know where you'd start with them structurally. The finish on them is high quality too.
Unless you manage to find a good resin/concrete bonding agent, get them resprayed in a body shop and have the drivers which are rare as rocking horse Sh#t, you'd be a fair few hundred quid out of pocket with really nice looking empty cabs lol.
Shame as they really do sing.
They are 860s too, which I'd love to try.
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Bigman80
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Post by Bigman80 on Oct 3, 2019 19:34:14 GMT
I don't even know where you'd start with them structurally. The finish on them is high quality too. Unless you manage to find a good resin/concrete bonding agent, get them resprayed in a body shop and have the drivers which are rare as rocking horse Sh#t, you'd be a fair few hundred quid out of pocket with really nice looking empty cabs lol. Shame as they really do sing. They are 860s too, which I'd love to try. The cosmetics would be the issue. I reckon you could use a small syringe to get epoxy into the cracks ok. Big job to get an actual pair of speakers from them though. |
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Post by Deleted on Oct 3, 2019 19:41:16 GMT
Probably the best way to repair broken epoxy composite cabs, is to cut all cracks into a shallow 'V' on both sides and use an automotive bridging compound containing fine glass strands. It may even be available with carbon fibre strands, which would be nice and strong.
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Post by Deleted on Oct 3, 2019 19:56:33 GMT
Oh, it's doable but not financially feasible IMO.
Personally, id love to repair them but you can't even get the drivers. Expensive and unlikely to ever run again.
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Post by Deleted on Oct 4, 2019 19:27:34 GMT
Managed to get some time to build a pair of Spotfire Reference cables for a customer. Having a listen to them now. Wish I hadn't! I need to put them in my own system now lol Pics of the conductive braiding, silver vs 60/40 solder and the Absolute Harmony KLE plugs. I doubted Dave Brook when he suggested the braiding would be worth the money, he was right. Credit where its due.    io clash of the titans |
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Post by Deleted on Oct 8, 2019 12:01:19 GMT
Well that's that. The Neurochrome preamp is paid for and winging it's way from sunny Gloucestershire to Wolverhampton. Should be here Friday. A couple of pics. I'll upload more when it arrives.   where to host imagesGotta say, I'm quite excited to give this a listen. |
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Bigman80
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Post by Bigman80 on Oct 8, 2019 12:14:48 GMT
Well that's that. The Neurochrome preamp is paid for and winging it's way from sunny Gloucestershire to Wolverhampton. Should be here Friday. A couple of pics. I'll upload more when it arrives. where to host imagesGotta say, I'm quite excited to give this a listen. Gloucs? You bought it from an existing owner? |
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Post by Deleted on Oct 8, 2019 12:21:29 GMT
Well that's that. The Neurochrome preamp is paid for and winging it's way from sunny Gloucestershire to Wolverhampton. Should be here Friday. A couple of pics. I'll upload more when it arrives. where to host imagesGotta say, I'm quite excited to give this a listen. Gloucs? You bought it from an existing owner? Yes. It's a fully built one. There aren't any PCBs available anywhere. I spoke to Tom about them and there were very little sales so to actually find one at all seems like a slice of luck The fella who soldered it all together is a DIYaudio regular. |
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Post by macca on Oct 8, 2019 17:00:49 GMT
Where's the transformer? I thought this was an active pre? Or do those two black boxes do it all? I'm confused.
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Post by Deleted on Oct 8, 2019 17:05:59 GMT
Yep those black boxes are the transformer.
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Post by Deleted on Oct 8, 2019 17:25:43 GMT
SMPS like in the 686.
Modded for Neurochrome.
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Post by sq225917 on Oct 8, 2019 17:35:13 GMT
Oooh dirty horrible noisy smps's.... the devils work. Cont on page 17.
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Post by Deleted on Oct 8, 2019 18:59:06 GMT
Oooh dirty horrible noisy smps's.... the devils work. Cont on page 17. Lol, yes horrible things they be. Yet in the 286 & 686 they are completely fine. It's the first time I haven't 'heard' their effect. Tom says the SMPS were custom made to his design and as you know, the guy can design with the best of them. What have you got in your 486s Si? |
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Post by Deleted on Oct 9, 2019 14:08:20 GMT
Yesterday, I was asked for an opinion on conductor materials.
The question was "You're not a fan of Rhodium plated plugs, why not?"
Well, this got me thinking. On a thread elsewhere, I suggested that when you buy a pair of Pure Silver cables for £300+ and they come with basic Neutrik XLR plugs on, you may as well just throw your money in the bin.
Obviously my diplomacy went down extremely well lol
So in came a plethora of questions about my opinion and then came this question of Rhodium.
Well, folks, the truth is Rhodium Plated plugs are the biggest pile of Sh#t out there. This isn't just an opinion BTW, its fact.
You see, what most people don't realise is that you cant just take a copper pin and plate on to it directly. Oh no, you have to plate it with Nickel first or you get a tarnished colour, be it silver, gold or Rhodium. Manufacturers use Nickel as the first plating metal because it's cheap. Then they plate on top of that with gold or with Silver then rhodium. Generally speaking ofc.
Jewellers use the same technique to get a brilliant finish. It's a cosmetic touch that ruins a good plug IMO.
So what's the issue?
The issue is that Rhodium is a very poor conductor material. It's only being used for Bling and offers nothing to the signal in terms of preservation or conductivity.
Have a look Here:
Conductivity Of Metals Sorted By Resistivity
RESIST. COND. SOURCE
ohm-m SIEMENS/m % IACS CODE MATERIAL
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1.591E-08 6.287E+07 108.40 1 Silver, Pure
1.642E-08 6.090E+07 105.00 2 Silver, Pure
1.664E-08 6.009E+07 103.60 1 Copper, Pure
1.707E-08 5.858E+07 101.00 1 Copper, Electrolytic Tough Pitch (Annealed)
1.724E-08 5.800E+07 100.00 2 Copper, Pure
2.028E-08 4.930E+07 85.00 1 Copper, Deoxidized (Annealed)
2.349E-08 4.257E+07 73.40 1 Gold
2.463E-08 4.060E+07 70.00 2 Gold, Pure
3.592E-08 2.784E+07 48.00 1 Bronze Phos., 1.25% Phos. Grade E
3.592E-08 2.784E+07 48.00 1 Phos. Bronze, 1.25% Phos. Grade E
3.918E-08 2.552E+07 44.00 1 Bronze, Commercial (Annealed)
4.000E-08 2.500E+07 43.10 1 Beryllium
4.105E-08 2.436E+07 42.00 1 Bronze, Commercial Leaded
4.105E-08 2.436E+07 42.00 1 Leaded Commercial Bronze
4.490E-08 2.227E+07 38.40 1 Rhodium
4.660E-08 2.146E+07 37.00 1 Brass, Red (Annealed)
5.388E-08 1.856E+07 32.00 1 Brass, Low (Annealed)
6.158E-08 1.624E+07 28.00 1 Brass, Cartridge (Annealed)
6.247E-08 1.601E+07 27.60 1 Cobalt
6.631E-08 1.508E+07 26.00 1 Brass, Low Leaded (Annealed)
6.631E-08 1.508E+07 26.00 1 Brass, Leaded Naval (Annealed)
6.631E-08 1.508E+07 26.00 1 Brass, Naval (Annealed)
8.210E-08 1.218E+07 21.00 1 Beryllium Copper, Cond. At
8.210E-08 1.218E+07 21.00 1 Copper Beryllium, Cond. At
9.579E-08 1.044E+07 18.00 1 Phos. Bronze, 5% Phos. Grade A
9.579E-08 1.044E+07 18.00 1 Bronze Phos., 5% Phos. Grade A
9.852E-08 1.015E+07 17.50 1 Bronze Aluminum, 5% Aluminum (Annealed)
1.014E-07 9.860E+06 17.00 1 Copper Beryllium, Cond. "A"
1.039E-07 9.628E+06 16.60 1 Silver, Tin Solder
1.039E-07 9.628E+06 16.60 1 Tin, Silver Solder
1.039E-07 9.628E+06 16.60 1 Solder, Tin Silver
As you can see, Rhodium has an IACS rating of 38.40% Which is absolutely crap when compared to that of Silver, Copper or Gold.
But guess what......My biggest peev is the line "Neutrik plugs are great" .......... are they?
lets have a look. EVERY Neutrik plug and socket has conductors made from Brass. even the best quality brass can only manage an IACS rating 48.00%
Based on facts alone, you can only arrive at the conclusion that actually, no they aren't great.
So what's my opinion? There is no point buying a Ferrari and putting shopping trolley wheels on it. If you are buying some cbales, pay attention to the plugs they use.
If you make your own, RCA's from AECO, KLE and WBT are about as good as it gets.
If you make Balanced, AECO, ETI and Viborg (Gold Plated) are where I'd spen my money.
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Post by Deleted on Oct 9, 2019 14:22:50 GMT
I concern myself more with conductor cross section and contact area than material. If you wanted to, you could use lead or iron if you have sufficient cross section, it would make no difference.
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Post by Deleted on Oct 9, 2019 14:29:41 GMT
I used to use Kimber 'Ultraplate' Chassis sockets & Plugs..  |
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Post by Deleted on Oct 9, 2019 14:37:23 GMT
I concern myself more with conductor cross section and contact area than material. If you wanted to, you could use lead or iron if you have sufficient cross section, it would make no difference. You'd need a hell of a cross section lol |
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Bigman80
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Post by Bigman80 on Oct 9, 2019 14:52:35 GMT
You showed me the light with KLE plugs. I love them!
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Post by Deleted on Oct 9, 2019 15:17:56 GMT
You showed me the light with KLE plugs. I love them! AMEN!!!!
lol, they are superb. I don't use anything else now.
The Absolute Harmony are sublime! Made a pair of Reference Spotties for a fella (Hammer) the other day. My word, the plugs made a big difference.
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Post by Deleted on Oct 9, 2019 15:35:18 GMT
Dont know em but when i look i see ETI written all over!
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Post by sq225917 on Oct 9, 2019 18:15:22 GMT
But 48% on the conductivity scale equates to miliohms of added resistance. You could shorten your cables by 2x the length of the sockets to make this amount up if you were really bothered.
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Post by karma67 on Oct 9, 2019 18:30:31 GMT
has anyone tried no rca's and directly soldered the cable?
i wonder if there's much if any difference?
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