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Post by Deleted on Feb 9, 2019 8:11:10 GMT
Got my pack of ferrite clamps btw so will be giving them a try later on Ha ha, my word! I can't believe even you are on the experimental path now. Lol I have ferrite core on my mains cables but not on the outer jacket. I'll pot a picture a little later to try and explain. To me, if the cable is shielded, how much effect can it have if it's on the outside of the shield! Normal unshielded cable should be fine |
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Post by macca on Feb 9, 2019 8:37:30 GMT
Lol = in my younger days I experimented with all sorts, that's why I'm so sceptical now. IMV There's never a substitute for using properly engineered high quality gear. Of course back in 1988 when I started you needed a lot of money to buy the good stuff. Thanks to the huge second hand market now that's not true not any more (well comparatively at least).
The way I see it:
1) The argument for ferrites makes sense. They may not improve anything if there is no problem in the first place but they can't do any harm.
2) It only cost a tenner delivered for a big bag of them of all shapes and sizes.
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Post by Deleted on Feb 9, 2019 8:40:08 GMT
Lol = in my younger days I experimented with all sorts, that's why I'm so sceptical now. IMV There's never a substitute for using properly engineered high quality gear. Of course back in 1988 when I started you needed a lot of money to buy the good stuff. Thanks to the huge second hand market now that's not true not any more (well comparatively at least). The way I see it: 1) The argument for ferrites makes sense. They may not improve anything if there is no problem in the first place but they can't do any harm. 2) It only cost a tenner delivered for a big bag of them of all shapes and sizes. Yes, they are very cheap indeed. Use on unshielded cable does usually have an effect. Let us know! |
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Bigman80
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Post by Bigman80 on Feb 9, 2019 8:41:18 GMT
The CAD article is plausible but I’d appreciate him writing another piece explaining the pricing of his products. The six socket version is £4K mcru.co.uk/product/cad-gc1-ground-control/?v=79cba1185463I can put forward a plausible explanation for the price factor, but I have a feeling he may not find it enjoyable reading. |
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Post by macca on Feb 9, 2019 8:48:03 GMT
Well £4K to start, take off the VAT that's down to roughly £3.2K. MCRU has to wet his beak so your down to about £2K
Assume £1000 to cover all costs and tax and he's maybe pocketing a grand for each one he sells. Added to which this is the high end market. If it's inexpensive it loses credibility.
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Post by Deleted on Feb 9, 2019 8:48:31 GMT
The article is plausible but I’d appreciate him writing another piece explaining the pricing of his products. The six socket version is £4K mcru.co.uk/product/cad-gc1-ground-control/?v=79cba1185463I can put forward a plausible explanation for the price factor, but I have a feeling he may not find it enjoyable reading. Yes well as we know, there are some unscrupulous profiteering types out there! |
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Post by Deleted on Feb 9, 2019 9:02:31 GMT
I'd like an opinion from Jez Arkless. He knows his stuff. I reckon he'd take a chainsaw to one.
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Post by Deleted on Feb 9, 2019 9:03:22 GMT
I'd like an opinion from Jez Arkless. He knows his stuff. I reckon he'd take a chainsaw to one. Great shout. Does anyone have an email address for him? Be good to get him on here |
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Post by macca on Feb 9, 2019 9:23:05 GMT
I'd like an opinion from Jez Arkless. He knows his stuff. I reckon he'd take a chainsaw to one. He gave his opinion on the short-lived PFM thread. I'll give you one guess as to what it was... Would be great to have him on here though. |
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Post by savvypaul on Feb 9, 2019 9:42:49 GMT
Well £4K to start, take off the VAT that's down to roughly £3.2K. Divide by 1.2 to calculate VAT portion. £3333.33 As a dealer, I wouldn't be taking it on for less than 50% of that. High likelihood that he will have to offer discounts to shift them. |
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Post by Deleted on Feb 9, 2019 9:48:29 GMT
I'd like an opinion from Jez Arkless. He knows his stuff. I reckon he'd take a chainsaw to one. He gave his opinion on the short-lived PFM thread. I'll give you one guess as to what it was... Would be great to have him on here though. I've invited him via PFM |
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Post by Deleted on Feb 9, 2019 10:53:55 GMT
So, ferrites. I found a greater effect by using small 3mm ID cores on the individual connectors. Adding a couple of large diameter ones to the exterior is also fine but this little tip was worth investigating imo. Pic is of a plug I knocked up during trials and not representative of a finished item!  |
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Post by macca on Feb 9, 2019 10:56:19 GMT
Fitted ferrite clamps to power lead on cd player, power lead on pre-amp. Also put one on the power cable to the electric radiator. Did all this whilst the music was playing.
Hmmm...maybe there is an effect. Almost like the volume had been very slightly turned down. Slightly more 'relaxed' sound. Certainly little enough difference to be in the realms of imagination. Deffo not night and day. But still intriguing. I've got dozens of the things should I just cover the power leads in them?
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Post by Deleted on Feb 9, 2019 11:02:16 GMT
Fitted ferrite clamps to power lead on cd player, power lead on pre-amp. Also put one on the power cable to the electric radiator. Did all this whilst the music was playing. Hmmm...maybe there is an effect. Almost like the volume had been very slightly turned down. Slightly more 'relaxed' sound. Certainly little enough difference to be in the realms of imagination. Deffo not night and day. But still intriguing. I've got dozens of the things should I just cover the power leads in them? 😂😂 Maybe not. Take them off again and see what happens. That's usually the best test. Got one at each end? |
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Post by macca on Feb 9, 2019 11:09:54 GMT
No, I just put them at the end where the cable enters the device. IIRC that's what DSJR said to do. Can try one at the other ends too.
The power cable to the cd player is captive but the pre-amp power cable is a proper foo job. It's as thick as a baby's arm.
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Post by Deleted on Feb 9, 2019 11:18:48 GMT
No, I just put them at the end where the cable enters the device. IIRC that's what DSJR said to do. Can try one at the other ends too. The power cable to the cd player is captive but the pre-amp power cable is a proper foo job. It's as thick as a baby's arm. Try one at both ends. |
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Post by Deleted on Feb 9, 2019 11:26:57 GMT
No, I just put them at the end where the cable enters the device. IIRC that's what DSJR said to do. Can try one at the other ends too. The power cable to the cd player is captive but the pre-amp power cable is a proper foo job. It's as thick as a baby's arm. Try one at both ends. I got a slap last time I said that to the girlfriend.  |
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Post by Deleted on Feb 9, 2019 11:27:31 GMT
I got a slap last time I said that to the girlfriend. 😂😂😂 |
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Post by savvypaul on Feb 9, 2019 11:41:34 GMT
From the CAD brochure:
We generally don’t recommend connecting both signal ground of an audio component and mains earth together using the same Ground Control device. In this case, you would be directly connecting signal ground to earth which could make noise problems worse.
From the Coherent website:
We advise strongly against connecting both signal ground of an audio component and mains earth together using the same Ground Control device would be to suggest against this directly connecting signal ground to earth could produce an increase in the very noise results you are trying to counteract.
My advice:
Try not to make grammatical f*ck-ups when 'personalising' what you've copied from elsewhere.
Changed my vote.
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Bigman80
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Post by Bigman80 on Feb 9, 2019 11:58:13 GMT
From the CAD brochure: We generally don’t recommend connecting both signal ground of an audio component and mains earth together using the same Ground Control device. In this case, you would be directly connecting signal ground to earth which could make noise problems worse.
From the Coherent website: We advise strongly against connecting both signal ground of an audio component and mains earth together using the same Ground Control device would be to suggest against this directly connecting signal ground to earth could produce an increase in the very noise results you are trying to counteract.
My advice: Try not to make grammatical f*ck-ups when 'personalising' what you've copied from elsewhere. Changed my vote. Actually, I have nothing to add. I’m only quoting your post because it was funny enough to appear twice and it might increase the chances of people seeing it  |
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Bigman80
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Post by Bigman80 on Feb 9, 2019 12:01:47 GMT
He gave his opinion on the short-lived PFM thread. I'll give you one guess as to what it was... Would be great to have him on here though. I've invited him via PFM Always liked Jez and respected his opinions. I hope he joins. You can’t expect someone with his technical grasp, huge experience and objective viewpoint to stay quiet when they think something is bollocks. I can’t and won’t expect that from him here. |
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Post by pauld on Feb 9, 2019 12:04:19 GMT
From the CAD brochure: We generally don’t recommend connecting both signal ground of an audio component and mains earth together using the same Ground Control device. In this case, you would be directly connecting signal ground to earth which could make noise problems worse.
From the Coherent website: We advise strongly against connecting both signal ground of an audio component and mains earth together using the same Ground Control device would be to suggest against this directly connecting signal ground to earth could produce an increase in the very noise results you are trying to counteract.
My advice: Try not to make grammatical f*ck-ups when 'personalising' what you've copied from elsewhere. Changed my vote. Wouldn’t it be better to get in touch with Tony and let him know about your concerns rather than bringing it up here?, I’m sure he’d be greatful. Also, I’m not sure how someone’s wording or rewording has any bearing on the product itself? |
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Post by Deleted on Feb 9, 2019 12:12:08 GMT
From the CAD brochure: We generally don’t recommend connecting both signal ground of an audio component and mains earth together using the same Ground Control device. In this case, you would be directly connecting signal ground to earth which could make noise problems worse.
From the Coherent website: We advise strongly against connecting both signal ground of an audio component and mains earth together using the same Ground Control device would be to suggest against this directly connecting signal ground to earth could produce an increase in the very noise results you are trying to counteract.
My advice: Try not to make grammatical f*ck-ups when 'personalising' what you've copied from elsewhere. Changed my vote. Oh dear. |
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Bigman80
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Post by Bigman80 on Feb 9, 2019 12:35:03 GMT
Fitted ferrite clamps to power lead on cd player, power lead on pre-amp. Also put one on the power cable to the electric radiator. Did all this whilst the music was playing. Hmmm...maybe there is an effect. Almost like the volume had been very slightly turned down. Slightly more 'relaxed' sound. Certainly little enough difference to be in the realms of imagination. Deffo not night and day. But still intriguing. I've got dozens of the things should I just cover the power leads in them? I tried this a long time ago but couldn’t hear any difference. Probably going to differ from one system to another though |
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Post by macca on Feb 9, 2019 12:56:48 GMT
I think you might need to have an RF problem to solve otherwise what can they possibly do?
I've now added one to the telly power cord, two to the cable box power lead, one at each end, and one to the computer power cord. They are the only 3 devices I own with SMPS power supplies.
All I can say is I think there might have been a difference adding the very first one to the cd player power cord. After that not noticed anything else. Could I spot the possible difference blind? No, I don't think so.
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Post by Deleted on Feb 9, 2019 13:02:33 GMT
I think you might need to have an RF problem to solve otherwise what can they possibly do? I've now added one to the telly power cord, two to the cable box power lead, one at each end, and one to the computer power cord. They are the only 3 devices I own with SMPS power supplies. All I can say is I think there might have been a difference adding the very first one to the cd player power cord. After that not noticed anything else. Could I spot the possible difference blind? No, I don't think so. At least you tried. |
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Post by macca on Feb 9, 2019 13:09:01 GMT
My gut instinct is that the sound is slightly more relaxed. I feel like the sound has improved. I absolutely couldn't say for certain. Compared to other changes I've made where you can tell from the first couple of bars of music that this is both a change and an improvement - the old 'night and day' effect - this is pretty marginal though.
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Post by Deleted on Feb 9, 2019 13:24:45 GMT
From the CAD brochure: We generally don’t recommend connecting both signal ground of an audio component and mains earth together using the same Ground Control device. In this case, you would be directly connecting signal ground to earth which could make noise problems worse.
From the Coherent website: We advise strongly against connecting both signal ground of an audio component and mains earth together using the same Ground Control device would be to suggest against this directly connecting signal ground to earth could produce an increase in the very noise results you are trying to counteract.
My advice: Try not to make grammatical f*ck-ups when 'personalising' what you've copied from elsewhere. Changed my vote. Wouldn’t it be better to get in touch with Tony and let him know about your concerns rather than bringing it up here?, I’m sure he’d be greatful. Also, I’m not sure how someone’s wording or rewording has any bearing on the product itself? Why should it not be brought up here? I'm sure Tony is watching every forum that is discussing 'grounding boxes', so likely needs nobody to "let him know". |
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Post by pauld on Feb 9, 2019 14:01:31 GMT
Just feels a bit like trying to find fault for the sake of it in a teacher, teacher manner, and yes he maybe keeping a watchful eye on discussions, but I doubt he makes it a priority.
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Post by macca on Feb 9, 2019 14:14:50 GMT
I don't think that the poor grammar was the main thrust of Paul's post.
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