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The Paul Hynes SR7

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3 hours ago, oilpaint said:

@paulhynes Paul, have Builds 15, 16, and 17 gone out?

 

I can speak for 17, since it's mine.

 

No, it hasn't shipped yet, due to some delayed parts. I am hopeful that Paul can finish it as soon as he is operational again.

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10 minutes ago, auricgoldfinger said:

I wonder if @paulhynes is operational again after the move.

I just got a note from Paul yesterday.  He is installing equipment for his new production line and office.  He is waiting for installation of a solder fume extraction system required by health and safety regulations.  He is getting close to resuming work in the new facility.

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Possibly a bit off topic, but I have a Mac mini server that was Steve Nugent (Empirical Audio) personal unit.  I now am using Laufer Teknik Memory Player as it's world class.  My server is really special, but it runs on a large Paul Hynes LPS unit.  I odn' have the specifics, but I can get them from Steve.  Are these units worth much on the after market?  

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52 minutes ago, ctsooner said:

Possibly a bit off topic, but I have a Mac mini server that was Steve Nugent (Empirical Audio) personal unit.  I now am using Laufer Teknik Memory Player as it's world class.  My server is really special, but it runs on a large Paul Hynes LPS unit.  I odn' have the specifics, but I can get them from Steve.  Are these units worth much on the after market?  

 

The market value depends on the specific model.  Also, they don't appear often in the after market, so there isn't a lot of price history.

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1 hour ago, ctsooner said:

Possibly a bit off topic, but I have a Mac mini server that was Steve Nugent (Empirical Audio) personal unit.  I now am using Laufer Teknik Memory Player as it's world class.  My server is really special, but it runs on a large Paul Hynes LPS unit.  I odn' have the specifics, but I can get them from Steve.  Are these units worth much on the after market?  

 

1 hour ago, auricgoldfinger said:

 

The market value depends on the specific model.  Also, they don't appear often in the after market, so there isn't a lot of price history.

 

Those who have them use them as there's nothing better.  It's a niche investment and there likely aren't many compared to other supplies.

 

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3 hours ago, ctsooner said:

Possibly a bit off topic, but I have a Mac mini server that was Steve Nugent (Empirical Audio) personal unit.  I now am using Laufer Teknik Memory Player as it's world class.  My server is really special, but it runs on a large Paul Hynes LPS unit.  I odn' have the specifics, but I can get them from Steve.  Are these units worth much on the after market?  

 

Check out these expired listings for some idea.  https://www.hifishark.com/search?q=paul+hynes

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On 11/12/2018 at 6:29 PM, paulhynes said:

instead of just making assumptions based on incomplete theoretical data.

 

 

Nope from real experience in the real world of electronics.

Again show some figure of the effects at low frequency, on a PCB it is only at microwave where the losses due to DA are a problem, at low frequencies the effect is so minute to be totally negligible. The DA effect will only be apparent if you have a capacitive structure, such as a track over a ground plane/ return path, so you can calculate the size of the parasitic capacitor and thus work out the losses due to DA, we do this for microwave boards where it is a problem, not low frequency power supply PCB's...

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I had intended to provide an update last week but re-scheduled health appointments for family members took me off island.

 

The weather over the last two months has seen repetitive storm fronts moving across the island with few days of settled weather. The wind speeds have been typically gale force and higher resulting in many ferry cancellations. This in turn has delayed delivery of materials and equipment for the new premises as well as delaying the appointments for contractors of specialised work to comply with health and safety legislation here in the UK.

 

I am still awaiting the installation of solder fume extraction equipment. As a temporary solution, I have ordered a couple of bench top solder fume absorbsion units for use until the fume extraction system is installed.

 

The workshop benches have built in shelving to 2 metres height and fully loaded these will be top heavy. I ordered the cross beams that will anchor these workbenches to the workshop walls safely, but these have not yet arrived. The first shipment of these beams was lost in transit (how do you lose two 3 metre long 45mm x 45mm aluminium extrusions) and a second shipment has now been sent which shows on tracking as due for delivery imminently. We are away from tomorrow until 2nd of January for the Christmas and New Year holiday break. I have made arrangements for outstanding deliveries and hopefully everything outstanding will be delivered on 2nd January. Once I have these items they will be installed and I aim to be back on a fully operational custom build workbench on January 7th.

 

I have completed the Technical computer re-build and also the new administration computer is now installed at the new premises, so I will be able to go through all the build schedules for SR power supplies on my return from the holiday. There is also a large amount of e-mail awaiting my attention in the inbox. A brief scan of this indicates that many with outstanding custom build projects wish to re-specify their project to accommodate new equipment acquisitions. This is fine but it will take some time to process and I do not wish to overspill into allotted build time, so please be patient and let me get on with this during my allotted admin time.

 

Down time over the last couple of months, component sourcing and chassis anodising issues have resulted in delays with SR4 order completion. The sourcing and anodising issues have now been resolved. The printed circuit boards have all been populated and we now have the chassis with a very nice anodised finish. The mains transformers have to be installed on the printed circuit boards then the SR4s can go into soak test prior to shipping. My assistant will prioritise these when we return after the holiday.

 

Jiffi32, the next SR4 production batch with available units will be manufactured in February.

 

Regards to CA members and happy Christmas

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1 hour ago, paulhynes said:

I had intended to provide an update last week but re-scheduled health appointments for family members took me off island.

 

The weather over the last two months has seen repetitive storm fronts moving across the island with few days of settled weather. The wind speeds have been typically gale force and higher resulting in many ferry cancellations. This in turn has delayed delivery of materials and equipment for the new premises as well as delaying the appointments for contractors of specialised work to comply with health and safety legislation here in the UK.

 

I am still awaiting the installation of solder fume extraction equipment. As a temporary solution, I have ordered a couple of bench top solder fume absorbsion units for use until the fume extraction system is installed.

 

The workshop benches have built in shelving to 2 metres height and fully loaded these will be top heavy. I ordered the cross beams that will anchor these workbenches to the workshop walls safely, but these have not yet arrived. The first shipment of these beams was lost in transit (how do you lose two 3 metre long 45mm x 45mm aluminium extrusions) and a second shipment has now been sent which shows on tracking as due for delivery imminently. We are away from tomorrow until 2nd of January for the Christmas and New Year holiday break. I have made arrangements for outstanding deliveries and hopefully everything outstanding will be delivered on 2nd January. Once I have these items they will be installed and I aim to be back on a fully operational custom build workbench on January 7th.

 

I have completed the Technical computer re-build and also the new administration computer is now installed at the new premises, so I will be able to go through all the build schedules for SR power supplies on my return from the holiday. There is also a large amount of e-mail awaiting my attention in the inbox. A brief scan of this indicates that many with outstanding custom build projects wish to re-specify their project to accommodate new equipment acquisitions. This is fine but it will take some time to process and I do not wish to overspill into allotted build time, so please be patient and let me get on with this during my allotted admin time.

 

Down time over the last couple of months, component sourcing and chassis anodising issues have resulted in delays with SR4 order completion. The sourcing and anodising issues have now been resolved. The printed circuit boards have all been populated and we now have the chassis with a very nice anodised finish. The mains transformers have to be installed on the printed circuit boards then the SR4s can go into soak test prior to shipping. My assistant will prioritise these when we return after the holiday.

 

Jiffi32, the next SR4 production batch with available units will be manufactured in February.

 

Regards to CA members and happy Christmas

Thanks for the update Paul, wishing you a peaceful and happy Christmas break.

 

Please put me down for an SR4 on the February batch please  

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10 minutes ago, TheAttorney said:

And then the music suddenly stopped - the fuse had blown for no good reason. The dealer MCRU was very good to offer a refund without quibble, but I didn't want a refund, I wanted another SR Blue because my system sounded broken without it - objectively little different, but the magic was gone. Still waiting for that replacement. PS. I know this is impossible in a AC circuit, but I'm convinced the SR Blue is directional. By 50/50 chance I had it the correct way round the first time. Some of the magic was lost the other way round.

 

SR states that the blue fuse is directional, so you're not crazy.  From their FAQ:

 

Yes, fuses are directional.  Electricity should flow from the left to the right when you view the fuse.  If you do not know

the direction of flow you should listen to the fuse inserted in both directions.  One direction will sound more detailed.  This

is the correct way.

 

https://www.synergisticresearch.com/fuses/blue/

 

I blew 2 blue fuses that I was using in my JS-2.  SR was kind enough to replace the second one for free after I inquired about it.  @austinpop told me that adding a 1.3-1.6x factor seems to be preferred (I'm not sure by whom), so I elected to go with a 1.6A fuse (vs. stock 1A) with the free replacement fuse.  So far, everything is fine.  🤞

 

If you ever want to splurge on a power cable, the SR UEF Blue HC is performs well above its pay grade IMO.  I have used them successfully with my BPT-3.5 Signature balanced power transformer, DAVE, and Reference 1 PSU.  https://www.synergisticresearch.com/cables/coreuef/uef-blue-hc/

 

SR is onto something good with their UEF/graphene technology.

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On 1/10/2019 at 3:23 PM, auricgoldfinger said:

I blew 2 blue fuses that I was using in my JS-2.  SR was kind enough to replace the second one for free after I inquired about it. @austinpop told me that adding a 1.3-1.6x factor seems to be preferred (I'm not sure by whom), so I elected to go with a 1.6A fuse (vs. stock 1A) with the free replacement fuse.  So far, everything is fine.  🤞
 

Yes, I've read a number of times that audiophile fuses (not just SR's) seem to be more fragile than stock. So I ordered my replacement to be the next rating up (4A instead of 3.15A). It's a slightly increased risk, but it's getting to he point where the fuse is becoming more expensive than the electronics it is trying to protect!

 

Regarding vibration control, the SR7's side panels sound very solid when tapped, but the unbraced flat top and bottom panels sound a bit tinny, so these seemed the best candidates for vibration control. Using only whatever I could find in my spares box , I tried some reasonably priced  audiophile footers  below, and an unreasonably priced HRS damper plate above. Neither made much difference to SQ.

 

 

I then tried 3 dirt cheap KE "shake away" washing machine pads below. I previously had (very) minor success with these under DAVE, but no luck here. I then tried the KE pads at the sides (1 under either side near the transformer and the 3rd under the front panel - and here I found an improvement. It was subtle, but the KE pads are staying for now. YMMV an awful lot with this type of tweak.

 

None of the above made much difference to the transformer's physical hum that I had originally reported. If anything the KE pads under the sides made it slightly worse. It was loud enough to be clearly heard on the opposite side of a quiet room. I then realised that the hum wasn't constant - it followed  a 10 second wave:  At 0 seconds it was loudest, gradually reducing to near silent at around 5 seconds, then gradually increasing to loudest at around 10 seconds.  

 

Anyway, I've recently moved house, and I've been pleasantly surprised to hear that the SR7 is now permanently whisper quiet. I.e. I have to strain to hear any hum at all, even a foot away in a quiet room. So the original problem was caused by the house power supply, rather than the SR7 itself. Can anyone suggest what causes this?

 

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Same here; I had a 3.15A fuse (HiFi Tuning) blow in my SR-7 EHD MR4 at second power-on. I’ve replaced it with a 5A Synergistic Black fuse (the Blue didn’t exist yet back then) after consulting with Paul Hynes. It’s been fine since installation.

 

Fuses sureley have an effect of the resulting SQ. The HiFi-Tuning one wasn’t to my liking. De SR one very much.

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Hi

 

Probably not the right place for it but am looking for a used Paul Hynes LPS, either 5V or 7V both into 1.5 or 2 A, preferably running at 230V.

 

Does anyone have a spare one lying around that they wish to sell for a reasonable price?

 

Thanks

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18 minutes ago, mikey8811 said:

Hi

 

Probably not the right place for it but am looking for a used Paul Hynes LPS, either 5V or 7V both into 1.5 or 2 A, preferably running at 230V.

 

Does anyone have a spare one lying around that they wish to sell for a reasonable price?

 

Thanks

The specs you state would be met by a Paul Hynes SR4, but as you’ve posted in the SR7 thread, is that what you are looking for?

 

Used SR7’s are rarely up for sale, so you should probably focus on the SR4, which is very good.  No good to you right now, and possibly not any time this year, but if I ever get the SR7 I have almost completed the ordering of (I’ve taken over a cancelled order) I will probably sell my SR4.

 

You could mention your interest over on the SR4 thread https://audiophilestyle.com/forums/topic/38614-the-paul-hynes-sr4-psu/

 

 

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1 hour ago, str-1 said:

The specs you state would be met by a Paul Hynes SR4, but as you’ve posted in the SR7 thread, is that what you are looking for?

 

Used SR7’s are rarely up for sale, so you should probably focus on the SR4, which is very good.  No good to you right now, and possibly not any time this year, but if I ever get the SR7 I have almost completed the ordering of (I’ve taken over a cancelled order) I will probably sell my SR4.

 

You could mention your interest over on the SR4 thread https://audiophilestyle.com/forums/topic/38614-the-paul-hynes-sr4-psu/

 

 

Thanks for the heads up. I will post there. I just noticed this thread and not the other one.

 

I saw your comments there. I too have a LPS 1 that is now unused. How does the SR4 compare to it? I think you were going to do a comparison but probably did not get down to it.

 

I have seen Audio Bacon's review comparing the SR 4 to the LPS 1.2. He seems to think the LPS 1.2 is fuller sounding which is not what I would have expected.

 

Do let me know if and when you decide to sell your SR 4.

 

Thanks

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@mikey8811 I used to have a lps-1 before I got an SR4 last April it's a marked improvement over the lps-1 and then another jump up when you use a good mains cable. Well worth getting, I think it would be easier to order a new one, Paul has a few spaces left on the march build if your quick.

@str-1 have you bought build 35?

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4 minutes ago, Jiffi32 said:

 have you bought build 35?

I’ve no idea.  In truth, I haven‘t actually bought anything yet as I have still to finalise the spec with Paul.  An email from me seeking to do just that is waiting, no doubt along with several others, for Paul’s attention once he has the new production facilities operational.

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On 1/11/2019 at 3:43 PM, TheAttorney said:

  So the original problem was caused by the house power supply, rather than the SR7 itself. Can anyone suggest what causes this?

 

 

Hi and thanks again for that listen too your Dave in Milton Keynes way back. Headfi quiet room. I have the Qutest off this experience now.

My isolation trans was pulsing and getting worse over time i tryed rubber Car panel and PC rubber noise blocker.

I even have a mains DC blocker..

Off another issue i bought a mains pass through reader, i was getting the max UK voltage of 251V in Birmingham.

I added the Power inspired pre Isolation trans as it outputs 230V Sine. This pulsing has gone. Moving to another part of the national  grid might have solved this for you.

Most trans seem to be 110 220 230v.

I dont know and want an answer if its core saturation, mag flux with higher voltages over 230v causing hum pulsation??? , not sure what others abroad have 240+V as well as UK.

Love to know what the cause is just to empower others... 

SR black suprised me just hate the cost.

Glad its fixed, wish i had the PH to play with.

Happy new year

Dave

 

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