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Post by petea on Sept 19, 2022 10:54:47 GMT
Magnaplanars use them too. Strikes me as odd unless the supertweeters Shihanian use are especially sensitive without protection.
Anyway, after extensive searching having been confused by HiFi Tuning's website I have discovered that the HiFi Tuning Supreme3 Silver/Gold fuses come in both fast (Fink) and slow (Traege) forms, but not many places seem to stock them. However, Ohrenschmaus in Schleswig-Holstein do and so I have ordered a bunch of 3.15 A (F) fuses from them so that I can deal with the fuses in the speaker and the ones inside the VM200 amplifier.
Out of curiosity I have also ordered a Lab12 Knack mains cable as I have been impressed with their mains conditioners and it seems they developed their mains cables at the same time. I am also toying with the idea of swapping the Nova for a Gordian conditioner here as well. We'll see. One step at a time!
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Post by petea on Sept 19, 2022 14:50:47 GMT
The stands that I wanted to try and mount the Townshend Supertweeters arrived a short while ago. Quite nicely made except for one burr that they simply coated over! They are steel of some description (I had hoped they might have been aluminium as it wasn't specified in the description) and are good and weighty, but of course magnetic! Anyway they tuck nicely under the Townshend Podiums and position the Supertweeters nicely. I added some layers of cork and felt and a dense foam plate under each to get them to the right heigh and away from the metal 'shelf' at the top of the column. I may modify the tops to use a wooden plate. I'll see. As indicated the cork, wood, acrylic and felt discs arrived at the same time and the speakers are now jacked up a bit further and slightly better isolated from the Podiums. I did this first and it may have had a slight impact on the tightness of the bass - I shall fiddle further. Here are a few pictures to show the arrangement. The felt, cork and foam under the Supertweeters (which already had a BR pad on them) seem to make a good job of isolating them from the impact of the rear-facing passive radiators on Arcs. I'll measure them properly later. Front View.Side View and DetailThus also gives an idea of the size of the space (just over 16m x 5.5m). It is full of stuff though and the sloped ceiling and mixed materials on the rear wall do a very good job of killing reflections etc.
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Post by Slinger on Sept 19, 2022 15:41:51 GMT
Why do you have loudspeaker-shaped holes in the back of those wooden kitchen waste bins?
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Post by MartinT on Sept 19, 2022 15:45:58 GMT
Shame they're steel as they could be affecting the supertweeters. Were they custom made and could you have them made in aluminium?
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Post by petea on Sept 19, 2022 16:30:46 GMT
No, they were bought and are intended for Sonos units. I have spaced them away from the steel top-plates by about 50 mm and so I suspect they are far enough away not to have an influence. However, I will probably replace the plates with either a wooden or machined aluminium one. They were intended as a quick and easy fix and have achieved that as before the Supertweeters had to sit on the drawer units beside them and the right one was rather close the the enclosure of the Nova unit. They sound slight better now I think. I may well machine some aluminium uprights as well and just use the bases as they tuck nicely under the Podiums and are good any heavy. Actually a laminate of some form might be an idea as it would resist resonating with the radiator better. The holes are to let out the rubbish music I listen to, Paul!
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Post by MartinT on Sept 19, 2022 18:31:22 GMT
Or break out the 3D printer?
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Post by petea on Sept 19, 2022 20:49:44 GMT
Now there's an idea, and I'm just about to order a filament printer too.
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Post by petea on Oct 20, 2022 20:26:21 GMT
Well it is EtherREGEN / Mutec Master-clock / Ferrun Hypsos PSU out and Innuos PhoenixNET in! Despite replacing one box for 3 while improving both streaming from Qobuz and file re-play from Fidata server some more shuffling of the racks was required as at the same time I tried the Innuos PhoenixUSB and this has pushed USB replay from files on the server back ahead of the ethernet route.
There were two options for accommodating the two Innuos re-clockers; the first was to stack them on the left-hand rack where the master-clock and Ferrum PSU were, but this would have required the complete disassembly of the rack; the second option was to install the USB re-clocker in the left-hand rack and site the ethernet re-clocker closer to the streamer. The latter is more logical as it means a shorter run of the re-clocked ethernet feed to the streamer, but there is no room. However, we had a quick look in the Linn speed control box and, as suspected, it contains mostly air and is designed just to match other Linn products. A modification was clearly in order so that the Innuos unit could sit next to the speed controller in the same space as occupied currently by the Linn box alone.
An aluminium case of the same dimensions as the Innuos one has been ordered and, when it arrives, the components from the speed controller will be re-located into it.
New diagram and picture to follow!
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Post by mattspl on Oct 20, 2022 20:58:38 GMT
Nice system! I see a big Isotek unit underneath. Do you have the whole system running through it?
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Post by HD Music & Test on Oct 20, 2022 22:09:05 GMT
Very curious to know why you are using two grounding boxes? The PD between them is going to make that difference you are not looking for imho Pete
When you back in the UK give me a call and I would be happy to show what happens when you use two different reference grounds. Scott B is quite 'positive' about the benefits of using two or more. Can also demonstrate this with dynamic measurements when listneing as well. Worse still you could factor an eary connection as well, whoo thats a real killer. Yet a few companies advocate this.
As they say the proof is on the pudding.
One tip withnthe super tweeters use the matching speaker cable you are using to power the speakers, it works wonders also helps with the phase discrepenices between two different cables as well.
A lot of effort gone into the system Pete very well thought out, nice assembly sir.
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Post by petea on Oct 21, 2022 8:46:59 GMT
Hi Tony, thanks. I am in the UK at present, but it might be tricky to meet this time. It has been in my mind for some time to give you a call. With the German system there is a match between the main cables and the super-tweeters to a great extent as they are both of the Townshend Fractal family. I discussed this with Max when he was still with us and he was happy with the match. The jumpers used in the Royd Apex units were different though and he made me a pair from the Fractal cable to match. He was also going to make some shorter leads for the super-tweeters as they are rather too long for the speakers I use, but that never happened: it was only an aesthetic issue really anyway. The match in the German was not originally intended, but is a consequence of me using the Fractal main cables there, an option I do not really have in the UK. I have never tried using the same cable as the main ones for the super-tweeters here, but I could easily do so as I have spare cable. Thanks for the tip - I will give it a go. Which grounding boxes are you referring to, Tony? In the UK (CAD) they are all disconnected at present except one connected to the streamer only. I do have some Quartz Acoustics ones to try out, but have not done so yet although we may give it a go today. I did pop two BR grounding boxes on the subs, but I could here no impact from either just one or both so just left them as it saved space in the cupboard!
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Post by petea on Oct 21, 2022 8:51:29 GMT
Nice system! I see a big Isotek unit underneath. Do you have the whole system running through it? The IsoTek Nova runs all of the main components except for the power amplifier and the sub and is a Schuko equipped unit. They are run from two IsoTek Titans. The amplifier one is Schuko also, but the sub one is a UK unit. I may try a Lab12 Gordion in place of the Nova as in the UK these out-performed the two Sigmas I was using.
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Post by petea on Oct 26, 2022 10:33:59 GMT
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Post by petea on Jan 3, 2024 10:16:33 GMT
Although I mentioned that I had put the Arc speakers into the German system and showed photos of the stands I used to support the Supertweeters 'behind' them, I didn't update the system diagram. I have done so now and was prompted to do so as I have now installed the Innuos PhoenixUSB into the system between the Fidata server and the Lab12 DAC. It has been sitting there fore a while now, but I had not gotten around to ordering the USB cable needed to add it into the system. I wanted to stay with AQVox Blaze cables and these I ordered just before Xmas and they arrived last week. I write 'they' as I also ordered a short Blaze LAN cable to allow me to install the EtherRegen setup recycled from the UK and a couple of their Schuko terminated mains cables to try. The PhoenixNET was an ex demonstration unit and so has had some burn-in and the difference was audible immediately. These units are re-clockers and provide some degree of filtration and an improved power supply and I assume it is the latter parts that make the difference. The USB output of the Fidata server is already pretty special, but the difference that the PhoenixUSB makes both here and in the UK, while relatively small (compared with the price of these units), is worth having I think.
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