GeneA Posted June 11, 2017 Posted June 11, 2017 Help!!!! One of my cherished early Quad mono blocks has a fried input/mains transformer, if anyone can point me in the direction of a working replacement or even a complete unit suitable for spares it would be much appreciated. Cheers. Sent from my iPhone using Tapatalk
Upfront Posted June 12, 2017 Posted June 12, 2017 On 11/06/2017 at 11:33 PM, GeneA said: Help!!!! One of my cherished early Quad mono blocks has a fried input/mains transformer, if anyone can point me in the direction of a working replacement or even a complete unit suitable for spares it would be much appreciated. Cheers. Sent from my iPhone using Tapatalk Bugger. Not good new mate. I can't help unfortunately. But there are a couple of SNA members on the mainland who wind transformers if you can't find one localy. Lucas at Blackart Audio http://www.black-art.com.au/audio/index.php and Earl Weston of Weston Acoustics http://www.westonacoustics.com/ 1
Guest Posted June 12, 2017 Posted June 12, 2017 On 11/06/2017 at 11:33 PM, GeneA said: Help!!!! One of my cherished early Quad mono blocks has a fried input/mains transformer, if anyone can point me in the direction of a working replacement or even a complete unit suitable for spares it would be much appreciated. Cheers. Sent from my iPhone using Tapatalk Expand @Aussieamps could assist I would imagine and he may be your next door neighbor
GeneA Posted June 12, 2017 Author Posted June 12, 2017 On 12/06/2017 at 12:07 AM, 125dBmonster said: @Aussieamps could assist I would imagine and he may be your next door neighbor Expand Yep he's already on board, just need the component thank you 1
Upfront Posted June 12, 2017 Posted June 12, 2017 On 12/06/2017 at 12:07 AM, 125dBmonster said: [mention=104287]Aussieamps[/mention] could assist I would imagine and he may be your next door neighbor [emoji14] Didnt realise Anthony did that sort of thing Matt. Is there anything that man can't do?????!!!! 1
Guest Posted June 12, 2017 Posted June 12, 2017 Sure GeneA If you get into trouble with a replacement, you may be able to have the transformer core carefully re wound at Alpha Electrics or maybe Littles Electrical, in Launceston. Good Luck. Give me a yell if you really really get stuck as I was a motor rewinder in a past life (did a few years on a bench at Littles Electrical) Matt
GeneA Posted June 12, 2017 Author Posted June 12, 2017 On 12/06/2017 at 12:05 AM, Upfront said: Bugger. Not good new mate. I can't help unfortunately. But there are a couple of SNA members on the mainland who wind transformers if you can't find one localy. Lucas at Blackart Audio http://www.black-art.com.au/audio/index.php and Earl Weston of Weston Acousticshttp://www.westonacoustics.com/ Expand Thanks for the referrals, will make contact with them and source a quote, given the cost of replacing with new out of the UK , I have a fair bit of room to move.
Guest Posted June 12, 2017 Posted June 12, 2017 (edited) On 12/06/2017 at 12:15 AM, Upfront said: Didnt realise Anthony did that sort of thing Matt. Is there anything that man can't do?????!!!! Expand Gday Linc I was pointing at Anthony as he seems to know almost every Transformer supplier in the World and may know where one could come from (Where's Dave ?) Cheers Edited June 12, 2017 by Guest
GeneA Posted June 12, 2017 Author Posted June 12, 2017 On 12/06/2017 at 12:16 AM, 125dBmonster said: Sure GeneA If you get into trouble with a replacement, you may be able to have the transformer core carefully re wound at Alpha Electrics or maybe Littles Electrical, in Launceston. Good Luck. Give me a yell if you really really get stuck as I was a motor rewinder in a past life (did a few years on a bench at Littles Electrical) Matt Expand Thanks Matt, will call in and have a chat to them during the week. Thanks for your help and advice, much appreciated!!
Guest Posted June 12, 2017 Posted June 12, 2017 On 12/06/2017 at 12:23 AM, GeneA said: Thanks Matt, will call in and have a chat to them during the week. Thanks for your help and advice, much appreciated!! Expand Winding a power transformer, especially a fairly simple E Type one is not a huge job, although it would probably take about a day to disassemble and re wind (at an hourly rate). This may be a viable option and worth looking at for sure
Aussieamps Posted June 12, 2017 Posted June 12, 2017 Hi Guys The Quad II power transformer is very conventional. It is just a EI core about 200VA with 240vac primary and 600VAC centre tapped secondary, which is split into two 300vac windings for the GZ32 tube dual rectifier, the only other winding is 6.3vac 3 amp winding for the Tube heater circuit. There is a 5vac sec winding as well but this would be no longer needed as its only there for the Tube rectifier heater and I plan to replace this with silicon diodes, but leave the tube in place to keep the original looks of the Quad II amplifier. Gene get in contact with Southern Electrical Services-VIC , there is a link to them on my web site. Otherwise yes Littles Electrical should be able to rewind it for you, I thought Little's went out of business. Nope here they are, Little's Electrical Service (03) 6331 4324 108 Gleadow St Invermay, TAS, 7248 2
Special K Posted January 1 Posted January 1 (edited) Hoping to revitalise this thread as I have a failed output transformer too. Is this something that can be repaired here in Melbourne or in Australia? TIA! Edited January 1 by Special K
andyr Posted January 2 Posted January 2 On 01/01/2025 at 10:32 PM, Special K said: Hoping to revitalise this thread as I have a failed output transformer too. Is this something that can be repaired here in Melbourne or in Australia? TIA! Expand Aah, bad luck, Keith. But is your problem a failed power transformer (like Anthony Holton mentioned) ... or a failed output traffo?
Special K Posted January 2 Posted January 2 On 02/01/2025 at 10:45 AM, andyr said: Aah, bad luck, Keith. But is your problem a failed power transformer (like Anthony Holton mentioned) ... or a failed output traffo? Expand Yeah, a spot of bad luck I hope to change soon. It’s the output transformer on this. I’m considering replacing both to subdue my OCD tendencies currently.
andyr Posted January 2 Posted January 2 (edited) On 02/01/2025 at 9:41 PM, Special K said: It’s the output transformer on this. I’m considering replacing both to subdue my OCD tendencies currently. Expand Mmmm ... I suggest tube amps and 'OCD tendencies ' don't go well together, Keith. (Given that a tube is basically wearing out from the day it's first switched on! ) Edited January 2 by andyr 1
Mr 57 Posted January 3 Posted January 3 On 02/01/2025 at 9:41 PM, Special K said: Yeah, a spot of bad luck I hope to change soon. It’s the output transformer on this. I’m considering replacing both to subdue my OCD tendencies currently. Expand Not that I want to fan the flames of your OCD , but I had one go, then the other went out in sympathy within about 3 weeks…..just sayin 1
muon* Posted January 3 Posted January 3 https://keith-snook.info/quad-ii-majestic-transformers.html 1
muon* Posted January 3 Posted January 3 (edited) Apparently this mob can make replacements. https://transformers.uk.com/product/valve-audio-transformers/ Edited January 3 by muon* 1
muon* Posted January 3 Posted January 3 Patrick (RIP) Has some thoughts on the QUAD ll's https://www.turneraudio.com.au/quad2powerampmods.html 1
Mr 57 Posted January 3 Posted January 3 On 03/01/2025 at 2:31 AM, muon* said: Apparently this mob can make replacements. https://transformers.uk.com/product/valve-audio-transformers/ Expand These were the guys I purchased both of mine from. You can have them potted or unpotted, their paint match is extremely close to the original. 1
Special K Posted January 3 Posted January 3 On 03/01/2025 at 3:03 AM, Mr 57 said: These were the guys I purchased both of mine from. You can have them potted or unpotted, their paint match is extremely close to the original. Expand Thank you. I have contacted them and just waiting for pricing and shipping cost.
Special K Posted January 3 Posted January 3 Has anyone used these and it have any thoughts on them? I just found this on AliExpress: AU$238.39 | British Quad Ⅱ KT66 power amplifier with cathode negative feedback push-pull output transformer 3.5K: 4 8 16Ω power about 50W https://a.aliexpress.com/_mLLGs2X
Special K Posted January 3 Posted January 3 (edited) On 03/01/2025 at 2:35 AM, muon* said: Patrick (RIP) Has some thoughts on the QUAD ll's https://www.turneraudio.com.au/quad2powerampmods.html Expand Thank you! So far the blocks have had a couple of upgrades to IEC’s and RCA’s and able to run with any pre amp. Just need to sort out a power switch and the transformers. Edited January 3 by Special K
Special K Posted January 3 Posted January 3 On 03/01/2025 at 2:24 AM, muon* said: https://keith-snook.info/quad-ii-majestic-transformers.html Expand Thank you. I’ve contacted them and just waiting for a response re shipping and cost.
Recommended Posts