The Paul Hynes SR7

[austinpop]

Just now, oilpaint said:

@austinpop Thanks. Do you turn your SR7 off after listening? I have generally left all my equipment on. I just hit pause in ROON and after 15 mIn or so my Devialets go to sleep.

 

I never turn it off.

[austinpop]

Just now, auricgoldfinger said:

 

What fuse value are you using in your 3-rail unit?

 

10A per Paul's recommendation. But it's a standard fuse.

[austinpop]

1 hour ago, oilpaint said:

For those with a SR7, do you run it threw a power conditioner or straight to AC wall power plug? Has anyone ever done a comparison? I am currently running my SR7 to a Shunyata Denali S (version 1).

 

I should add that this is also highly dependent on the quality of your AC circuit and the quality of your power conditioner. While others' experiences are useful to know, there are just too many permutaions. This is an easy enough comparison to do yourself, and you should determine what sounds best for your system, and go with that.

[austinpop]

Thanks for the pointers to the soft start devices, guys. There is actually a "built in" current limiter in the PS Audio regenerators like the P12, on the outlets marked Zone D High Current, so I have that option.

 

More importantly, Paul is working on a solution to incorporate soft start in his future builds, so once he has it, I will send my unit back to have it added. 

[austinpop]

@Iving

 

Congratulations on your SR7T, and I, of course, am not surprised to hear of your positive experiences. I thought I'd suggest one more experiment for you to consider.

 

Do you have another "good" 12V PSU available - for example, an LPS-1.2, SR4, Farad, etc? If so, use it to power the EtherRegen. This frees up the 12V/12A rail on your SR7T to...

 

...independently power the CPU via the EPS (8-pin Molex) port on your motherboard. You'll of course need an XLR to 8-pin Molex cable, or an adapter from 5.5x2.1 barrel to 8-pin Molex. Ghent Audio can build you these.

 

The outcome of this experiment is not necessarily clear. I do know that independently powering the CPU via a separate beefy 12v rail does wonders to the SQ of the server. However, it is also true that the ER benefits greatly from an SR7-quality PSU, so you'd be downgrading the ER PSU relative to your current baseline.

 

Still, you may find that the net effect is better than what you currently have.

[austinpop]

My first solution was the cheap and cheerful Ikea Aptilig bamboo butcher block, with wood blocks as footers. This made a surprisingly nice improvement.

 

I've finally advanced to using a Taiko Daiza platform, with Panzerholz footers also provided by Taiko. Good as the Ikea solution was, this really does raise SQ substantially further. Especially surprising, given mine is a headphone setup, and does not have speakers supplying energy to the room.

 

These large SR-7s, with their massive transformers, do generate a significant amount of vibration, hence the benefit.

[austinpop]

That's exactly right, @internethandle

 

The idea is to use couplers (not isolators) between the component and the platform, and let the platform dissipate the energy. This is what the wood blocks provide between component and the Aptilig, which I just had sitting on the shelf with no footers.

 

The Daiza platform actually comes with its own footers that Taiko has engineered for purpose. In addition, they supply on request (and I ordered) smaller footers that can be used between components and the platform. These small footers provide rigid coupling to the platform.

 

For more details, see here: https://www.whatsbestforum.com/threads/taiko-audio-daiza-platforms.28666/