Addicted to music Posted August 18, 2019 Share Posted August 18, 2019 58 minutes ago, genkifd said: yeh the Purifi kit is pretty damn good. pitty im not and hands on person. Im actually waiting for the reviews on the new Nord Purifi mono amp reviews. You’re in Victoria, in Melb suburb? If if you are you can tee up with either myself or even @mwhouston for hands on..... 1 Link to comment Share on other sites More sharing options...
genkifd Posted August 18, 2019 Share Posted August 18, 2019 are you building the new purifi amps? 1 Link to comment Share on other sites More sharing options...
Guest Karl Rand Posted August 18, 2019 Share Posted August 18, 2019 On 20/07/2019 at 9:04 PM, Brucec said: Anthony Holton in Tasmania has been building some great amplifiers Yes but his pre-amplifiers and phono pre-amps appear to come naked without cases. Link to comment Share on other sites More sharing options...
MattyW Posted August 18, 2019 Share Posted August 18, 2019 9 minutes ago, Karl Rand said: Yes but his pre-amplifiers and phono pre-amps appear to come naked without cases. That's a bit rude Link to comment Share on other sites More sharing options...
Guest Karl Rand Posted August 18, 2019 Share Posted August 18, 2019 (edited) 28 minutes ago, MattyW said: That's a bit rude Anyhow, this has me curious so I’m going to arrange a visit as Holton Precision Audio is a 45 min drive from my place. First off I want to hear the phono pre-amp. I have some doubts though about those pale green (contact?) points if thats what they are. Edited August 19, 2019 by Karl Rand Link to comment Share on other sites More sharing options...
Aussieamps Posted August 19, 2019 Share Posted August 19, 2019 10 minutes ago, Karl Rand said: Anyhow, this has me curious so I’m going to arrange a visit as Holton Precision Audio is a 45 min drive from my place. First off I want to hear the phono pre-amp. I have some doubts though about those pale green (contact?) points if thats what they are. Hi Guys the boards shown are the DIY versions, I will be producing some commercial versions in the next couple of months all cased up ready to go. The first batch of these have been quite popular, sell quite a number of each design already. Nick Hulgich (Hulgich Audio) and myself will be at the Melbourne Audio Club meeting this Wednesday night, we will be doing a presentation with our gear and I will have the new Gain Block One preamp controlling the sound system. So those of you that are in Melbourne and can come along I hope to see you there. 2 Link to comment Share on other sites More sharing options...
Addicted to music Posted August 19, 2019 Share Posted August 19, 2019 16 minutes ago, Karl Rand said: Anyhow, this has me curious so I’m going to arrange a visit as Holton Precision Audio is a 45 min drive from my place. First off I want to hear the phono pre-amp. I have some doubts though about those pale green (contact?) points if thats what they are. Those green contact thingy are way better than spade connectors..... Trust me, I’m a gynocologist Link to comment Share on other sites More sharing options...
Addicted to music Posted August 19, 2019 Share Posted August 19, 2019 2 hours ago, genkifd said: are you building the new purifi amps? No, but diy for these modules are easy, provided there’s a dedicated cabinet with all the correct cut out and holes.. Link to comment Share on other sites More sharing options...
mwhouston Posted August 19, 2019 Share Posted August 19, 2019 9 minutes ago, Aussieamps said: Hi Guys the boards shown are the DIY versions, I will be producing some commercial versions in the next couple of months all cased up ready to go. The first batch of these have been quite popular, sell quite a number of each design already. Nick Hulgich (Hulgich Audio) and myself will be at the Melbourne Audio Club meeting this Wednesday night, we will be doing a presentation with our gear and I will have the new Gain Block One preamp controlling the sound system. So those of you that are in Melbourne and can come along I hope to see you there. Yes going. Should be good. 1 Link to comment Share on other sites More sharing options...
mwhouston Posted August 19, 2019 Share Posted August 19, 2019 (edited) 13 minutes ago, Addicted to music said: No, but diy for these modules are easy, provided there’s a dedicated cabinet with all the correct cut out and holes.. Has anyone got costing for these modules. I tried to email sales and I couldn’t send the email??? Purifi modules that is. Edited August 19, 2019 by mwhouston Link to comment Share on other sites More sharing options...
Addicted to music Posted August 19, 2019 Share Posted August 19, 2019 2 hours ago, mwhouston said: Has anyone got costing for these modules. I tried to email sales and I couldn’t send the email??? Purifi modules that is. I’m not building them ATM, I have a Magtech However I have a very soft spot for Hypex products. They are awesome! Wish I could be more help, I just found out here! Maybe check on the Hypex website...... Link to comment Share on other sites More sharing options...
Guest Karl Rand Posted August 19, 2019 Share Posted August 19, 2019 3 hours ago, Addicted to music said: Those green contact thingy are way better than spade connectors..... Trust me, I’m a gynocologist But I’m not giving birth to a phono-pre-amp - - as far as I know. Link to comment Share on other sites More sharing options...
Addicted to music Posted August 19, 2019 Share Posted August 19, 2019 3 minutes ago, Karl Rand said: But I’m not giving birth to a phono-pre-amp - - as far as I know. Those green connectors will “lock” on to the Cable via the screw above, they stay secure. Stick the wires in and lock and secure them with the screw, that’s it. You can see that spades are also used here, in time spades will open up providing a loose contact. I’ve seen on the stuff I work on they now provide a leaf spring to secure the connection in the centre of the spade in case it goes loose. But those are hard to find. Link to comment Share on other sites More sharing options...
Guest Karl Rand Posted August 19, 2019 Share Posted August 19, 2019 (edited) 17 minutes ago, Addicted to music said: Those green connectors will “lock” on to the Cable via the screw above, they stay secure. Stick the wires in and lock and secure them with the screw, that’s it. You can see that spades are also used here, in time spades will open up providing a loose contact. I’ve seen on the stuff I work on they now provide a leaf spring to secure the connection in the centre of the spade in case it goes loose. But those are hard to find. Call me paranoid if you want but with such contacts, no matter how tightly screwed down, I’m always concerned the portion of bare wire not screwed down is going to oxidise. Revealling this concern to a well known Stereonet reviewer some years ago I was told ‘If that worries you paint the bare wire with nail polish” . I didn’t ask which shade he recommended. Edited August 19, 2019 by Karl Rand Link to comment Share on other sites More sharing options...
Aussieamps Posted August 19, 2019 Share Posted August 19, 2019 Just now, Karl Rand said: Call me paranoid if you want but with such contacts, no matter how tightly screwed down, I’m always concerned the portion of bare wire not screwed down is going to oxidise. Revealling this concern to a well known Stereonet reviewer I was told ‘If that worries you paint the bare wire with nail polish” . I didn’t ask which shade was recommended. The green connectors are there just for convenience and tinning any wire before connection into these type of connectors is always a good idea, that way I have never found any issue using them long term. Otherwise the connectors can be removed and the cables can be soldered directly into the main PCBs, that was actually the original intent with these boards. The Green terminators just make it simple for DIY's. Link to comment Share on other sites More sharing options...
Guest Karl Rand Posted August 19, 2019 Share Posted August 19, 2019 LIke the idea of soldering directly onto PCB’s but given my soldering makes your mad grandmothers knitting look neat I’d be asking Holton to do it for me. Link to comment Share on other sites More sharing options...
Addicted to music Posted August 19, 2019 Share Posted August 19, 2019 24 minutes ago, Karl Rand said: Call me paranoid if you want but with such contacts, no matter how tightly screwed down, I’m always concerned the portion of bare wire not screwed down is going to oxidise. Revealling this concern to a well known Stereonet reviewer some years ago I was told ‘If that worries you paint the bare wire with nail polish” . I didn’t ask which shade he recommended. I’ve never had issues with those screw in types, especially if they come with a spring type washer, the washer will keep it secure forever, some washers even have biting edges to ensure the contact and are non ferrous. The spades are the biggest problem here, I’ve seen these go wild and become a fire issue, but that’s stuff that’s in 30A 3 phase. I’ve seen purple plasma jump tracks because these spades have come loose and over heated.... now days if you see non ferrous screw in types with a biting washer, that says quality to me..... in Japanese gear that I work on if a spade is deployed its with a spring on the center and I have never seen the fire hazards issues that use to happen! Link to comment Share on other sites More sharing options...
Guest Karl Rand Posted August 19, 2019 Share Posted August 19, 2019 (edited) 23 minutes ago, Addicted to music said: I’ve never had issues with those screw in types, especially if they come with a spring type washer, the washer will keep it secure forever, some washers even have biting edges to ensure the contact and are non ferrous. The spades are the biggest problem here, I’ve seen these go wild and become a fire issue, but that’s stuff that’s in 30A 3 phase. I’ve seen purple plasma jump tracks because these spades have come loose and over heated.... now days if you see non ferrous screw in types with a biting washer, that says quality to me..... in Japanese gear that I work on if a spade is deployed its with a spring on the center and I have never seen the fire hazards issues that use to happen! STOP IT! Your bringing back memories of an Audio Research D 70 MkII power amp I had to turn on from across the room with a long stick. Output valves turning that awful bluish purple (before they'd even heat up) then exploding - - - - - - - - - three times it was returned for repair with the same volcanic results . Took two solicitors letters to get my money back. Mind you, on the few rare occassions it worked it was one of the most sublimely musical power amps I’ve ever heard. Taught me a lesson I’ve never forgotten. Never buy a second hand valve power amp unless you have suicidal tendencies. Which leads to another ( off topic -sorry) question. I have a Yamaha A S 300 integrated in my TV room which has a number of screw down internal connections. Should I be concerned? Edited August 19, 2019 by Karl Rand Link to comment Share on other sites More sharing options...
Addicted to music Posted August 19, 2019 Share Posted August 19, 2019 (edited) 32 minutes ago, Karl Rand said: Which leads to another ( off topic -sorry) question. I have a Yamaha A S 300 integrated in my TV room which has a number of screw down internal connections. Should I be concerned? “No”. You should not be concern..... thats quality built......you can see on some they also used copper screws...where are you gonna find that? Notice also the power supply filter caps are stud screw types that are always higher current rating than there pin equivalent with the same type rating. Edited August 19, 2019 by Addicted to music Link to comment Share on other sites More sharing options...
genkifd Posted August 20, 2019 Share Posted August 20, 2019 looking into the Holton 500 amp - looks very interesting. is there any test results? anyone have one of these which pre are you using this this amp? thanks Link to comment Share on other sites More sharing options...
Aussieamps Posted August 20, 2019 Share Posted August 20, 2019 13 minutes ago, genkifd said: looking into the Holton 500 amp - looks very interesting. is there any test results? anyone have one of these which pre are you using this this amp? thanks Hi if you can make it to the melbourne audio club meet tomorrow night you can see and hear the 500 supreme amp, also a new Holton preamp that will be driving it. Link to comment Share on other sites More sharing options...
PKay Posted August 20, 2019 Share Posted August 20, 2019 49 minutes ago, Aussieamps said: Hi if you can make it to the melbourne audio club meet tomorrow night you can see and hear the 500 supreme amp, also a new Holton preamp that will be driving it. Any plans for a road trip to the Sydney Audio Club? Link to comment Share on other sites More sharing options...
genkifd Posted August 20, 2019 Share Posted August 20, 2019 52 minutes ago, Aussieamps said: Hi if you can make it to the melbourne audio club meet tomorrow night you can see and hear the 500 supreme amp, also a new Holton preamp that will be driving it. Yes I'm intending to go. But I'm wondering a fully balanced preamp would be better? Link to comment Share on other sites More sharing options...
Aussieamps Posted August 20, 2019 Share Posted August 20, 2019 1 hour ago, genkifd said: Yes I'm intending to go. But I'm wondering a fully balanced preamp would be better? The main advantage with a balanced preamp is only for driving long cable runs, otherwise sound quality is the same. In some cases noise performance can be better with unbalanced connections. 1 Link to comment Share on other sites More sharing options...
Aussieamps Posted August 20, 2019 Share Posted August 20, 2019 1 hour ago, PKay said: Any plans for a road trip to the Sydney Audio Club? No plans as yet, but defiantly possible Link to comment Share on other sites More sharing options...
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