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Post by electronumpty on Nov 28, 2020 12:01:54 GMT
Bit of surgery today, holes drilled fo rthe new tx . Also finally fitted the Firebottle soft start widget, at last ! lol   |
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Post by electronumpty on Nov 28, 2020 13:05:08 GMT
Bit of a wire fest!  |
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Post by electronumpty on Nov 28, 2020 17:24:45 GMT
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,399
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Post by Bigman80 on Nov 28, 2020 17:31:38 GMT
Got some BB3 Christmas lights on the go! Added an mm/mc switch too. Just a waiting for the 2.2m ohm resistor to turn up now, thought it might arrive today but no joy. Never mind, will have to wait before listening to it I guess.    Use 2x1m |
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Post by electronumpty on Nov 28, 2020 18:03:10 GMT
Ah that's clever, will do . If that doesn't work maybe I can use half a 4m ohm one ......🥴 or something....
Cheers EN.
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,399
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Post by Bigman80 on Nov 28, 2020 18:08:29 GMT
Ah that's clever, will do . If that doesn't work maybe I can use half a 4m ohm one ......🥴 or something.... Cheers EN. Two 4mohm in parallel or two 1mohm in series. |
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Post by electronumpty on Nov 28, 2020 18:21:27 GMT
ok 2 * 1 mohm in series like this ?  |
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Post by firebottle on Nov 28, 2020 18:36:24 GMT
Yup that's it.
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Post by electronumpty on Nov 28, 2020 18:37:48 GMT
Great , thanks chaps!
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Post by electronumpty on Nov 29, 2020 11:23:43 GMT
Had a little listen last night for an hour or so, didn't know what to expect. Slightly bass light at first but this changed over the hour and became more fulsome. I started with Natty Dread and it just wasn't there,, quite thin. I played it again an hour later to make sure I wasn't hearing things and the change for the better was quite noticable, deep tuneful and tight. Very nice.
Anyway, sounds great, very quiet with no music on and turned up full only a very slight hiss in the headphones. This is a big improvement over the toroid which was very noisy in comparison doing the same test.
I was quite surprised that there seemed to be a burning in period which affected the sound, didn't expect that. But it is sounding very nice now. The toroid delivered 165v compared to the 175v this o core does so I wonder if that has had an effect also, bringing the whole board "up to spec" as it were. Now it has the supply it was designed for rather than being slightly underpowered.
Will play a bit more today 🙂
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,399
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Post by Bigman80 on Nov 29, 2020 14:25:58 GMT
Had a little listen last night for an hour or so, didn't know what to expect. Slightly bass light at first but this changed over the hour and became more fulsome. I started with Natty Dread and it just wasn't there,, quite thin. I played it again an hour later to make sure I wasn't hearing things and the change for the better was quite noticable, deep tuneful and tight. Very nice. Anyway, sounds great, very quiet with no music on and turned up full only a very slight hiss in the headphones. This is a big improvement over the toroid which was very noisy in comparison doing the same test. I was quite surprised that there seemed to be a burning in period which affected the sound, didn't expect that. But it is sounding very nice now. The toroid delivered 165v compared to the 175v this o core does so I wonder if that has had an effect also, bringing the whole board "up to spec" as it were. Now it has the supply it was designed for rather than being slightly underpowered. Will play a bit more today 🙂 There will be a "cleaning" of the bass quality with the O-Core. It happened here, but that's exactly what happened when I tried the E&I Traffo. The fact the O-Core did this was a huge bonus and enthused me to continue trialing it. Torroidal Traffos now sound chunky and dirty to me and the O-Core doesn't. Do you have the Original MultiFETs too? |
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Post by electronumpty on Nov 29, 2020 14:57:00 GMT
Had a little listen last night for an hour or so, didn't know what to expect. Slightly bass light at first but this changed over the hour and became more fulsome. I started with Natty Dread and it just wasn't there,, quite thin. I played it again an hour later to make sure I wasn't hearing things and the change for the better was quite noticable, deep tuneful and tight. Very nice. Anyway, sounds great, very quiet with no music on and turned up full only a very slight hiss in the headphones. This is a big improvement over the toroid which was very noisy in comparison doing the same test. I was quite surprised that there seemed to be a burning in period which affected the sound, didn't expect that. But it is sounding very nice now. The toroid delivered 165v compared to the 175v this o core does so I wonder if that has had an effect also, bringing the whole board "up to spec" as it were. Now it has the supply it was designed for rather than being slightly underpowered. Will play a bit more today 🙂 There will be a "cleaning" of the bass quality with the O-Core. It happened here, but that's exactly what happened when I tried the E&I Traffo. The fact the O-Core did this was a huge bonus and enthused me to continue trialing it. Torroidal Traffos now sound chunky and dirty to me and the O-Core doesn't. Do you have the Original MultiFETs too? That's a good way of putting it "cleaning" , it's sounding very good and was certainly a worthwhile change. I thinks its cleaned the whole sound frequency as everything sounds more defined now across the board. I think I might have to fit one to my DCB1. Yes I have the original multi fets, some of the 1st batch you sent to people I think. |
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,399
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Post by Bigman80 on Nov 29, 2020 14:57:52 GMT
There will be a "cleaning" of the bass quality with the O-Core. It happened here, but that's exactly what happened when I tried the E&I Traffo. The fact the O-Core did this was a huge bonus and enthused me to continue trialing it. Torroidal Traffos now sound chunky and dirty to me and the O-Core doesn't. Do you have the Original MultiFETs too? That's a good way of putting it "cleaning" , it's sounding very good and was certainly a worthwhile change. I thinks its cleaned the whole sound frequency as everything sounds more defined now across the board. I think I might have to fit one to my DCB1. Yes I have the original multi fets, some of the 1st batch you sent to people I think. Yes, you'll notice better separation of everything as that Traffo is super clean. I've ordered a few to make sure I don't run out |
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Post by electronumpty on Nov 29, 2020 15:29:18 GMT
Good call , they are cheaper than the toroidy ones too and better sounding.
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,399
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Post by Bigman80 on Nov 29, 2020 15:45:49 GMT
Good call , they are cheaper than the toroidy ones too and better sounding. Absolutely right mate. There are still some bargain pieces about Let me know if you want to upgrade your MultiFET PCBs. I'll do them at cost for you. |
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Post by electronumpty on Nov 29, 2020 16:26:53 GMT
Thanks mate, think I'll have to take you up on the offer , very kind of you.
Cheers.
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,399
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Post by Bigman80 on Nov 29, 2020 16:59:15 GMT
Thanks mate, think I'll have to take you up on the offer , very kind of you. Cheers. No worries squire I'll pm you shortly |
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Post by electronumpty on Nov 29, 2020 18:51:37 GMT
Thanks mate, think I'll have to take you up on the offer , very kind of you. Cheers. No worries squire I'll pm you shortly Thanks , just let me know how much etc. cheers |
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Post by electronumpty on Jan 29, 2021 22:39:00 GMT
I'm having an idea of making a 6 value loading switch to replace the loading plugs using a 2 pole 6 way connector with resistors connected to the board somehow. I have a cheap selector I can experiment with so I think I might have to try this out. I think this would be a cool thing to have if it works out, just need to figure out a sensible range of value for the loadings. Lockdown does weird things to your mind!!  |
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,399
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Post by Bigman80 on Jan 29, 2021 22:58:45 GMT
I'm having an idea of making a 6 value loading switch to replace the loading plugs using a 2 pole 6 way connector with resistors connected to the board somehow. I have a cheap selector I can experiment with so I think I might have to try this out. I think this would be a cool thing to have if it works out, just need to figure out a sensible range of value for the loadings. Lockdown does weird things to your mind!! I did consider that idea myself. Let me know how you get on. |
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Post by electronumpty on Jan 29, 2021 23:11:48 GMT
yes will do, for reference straight through is 47 ohm?
Cheers
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Post by firebottle on Jan 30, 2021 9:28:26 GMT
Without loading plug/resistor the base loading is 1000 ohms.
Any plug/resistor fitted is in parallel with this value.
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Post by electronumpty on Jan 30, 2021 10:25:10 GMT
Without loading plug/resistor the base loading is 1000 ohms. Any plug/resistor fitted is in parallel with this value. Ah, now we get techy 🙂 So if for example I want to load the cartrdge with 47 ohms do I just add a 47 ohm resistor in parallel or is there a calculation I need to make to get the correct resistor and load? I thought it wouls juat be a case of adding a 47 ohm but maybe that's too simplistic from me 🤪thanks |
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Post by karma67 on Jan 30, 2021 10:42:20 GMT
Without loading plug/resistor the base loading is 1000 ohms. Any plug/resistor fitted is in parallel with this value. Ah, now we get techy 🙂 So if for example I want to load the cartrdge with 47 ohms do I just add a 47 ohm resistor in parallel or is there a calculation I need to make to get the correct resistor and load? I thought it wouls juat be a case of adding a 47 ohm but maybe that's too simplistic from me 🤪thanks hi, put 1000 as the first resistor and then what ever value for the second to get you the value you want. for 47 ohm a 50 ohm is close.
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Post by electronumpty on Jan 30, 2021 10:43:50 GMT
Ah, now we get techy 🙂 So if for example I want to load the cartrdge with 47 ohms do I just add a 47 ohm resistor in parallel or is there a calculation I need to make to get the correct resistor and load? I thought it wouls juat be a case of adding a 47 ohm but maybe that's too simplistic from me 🤪thanks hi, put 1000 as the first resistor and then what ever value for the second to get you the value you want. for 47 ohm a 50 ohm is close.
Great , thanks. |
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Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,399
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Post by Bigman80 on Jan 30, 2021 12:15:49 GMT
Yes, It gets techy lol.
No real drama. There is an app for Android called "Electrodoc"
It's been a very useful app.
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