[gmahler2u]

Congrats! Would love to hear you take vs the '74 SWGP Silver Reflektors.

I need some time to get use with this baby first.  Yes, I'll try to give you some of my opinion.

 

[gibosi]

Nice collection! Did you ever get a tester?

Out of the 11 '75 single wire posts none were with silver shields and closed plates?

 
Haven't managed to get a tester yet. But it is on my To Do list.
 
And no, not even one silver shield....  However, one of the grays does have closed plates, which I thought was interesting....

 

[rb2013]

Haven't managed to get a tester yet. But it is on my To Do list.

And no, not even one silver shield....  However, one of the grays does have closed plates, which I thought was interesting....

That is interesting on the one with the closed plates - the rest open like the '75 plate posts. I didn't include they 75 SWGP Grays in my review recently. That peaked my curiosity. So I just did a mini face-off between the two. I'll post seperately.

 

[rb2013]

I just did a mini listening test between the 'Holy Grail' '75 Reflektor Single Wire Getter Post Silver Shields (closed plates) and the Voskhod '75 Single Wire Getter Post Gray Shields (open plates). Same songs I used previously - Florence and the Machine 'Dog Days Are Over' and 'Rabbit Heart'. I know these tracks very well. I like them as they are very complex and dynamic, with layers upon layers of vocals. See my posts starting at #1914 for more info. Headphone Senn HD800s.

Well there is a very significant difference in the sound of these two sibling tubes. They both sounded excellent. The Silvers are a touch darker but with a larger image, deeper and wider soundstage. The 'Holy Grails' had more detail, but no etch or brittleness. Welch's vocals were just as smooth as can be, the same goes for the Grays, except with the Silvers the added detail exposed more of the deeper backgound vocals. At times 3 or 4 vocals deep! Both tubes had no conjestion when the tracks became really complex, the 'HG' Silvers revealing more of the subtile little things. Bass depth were very good with each, very extended, with a slightly more natural tone on the 'HG's.

Overall I would place the '75 SWGP Gray VRs a three way tie for #3. Right there with the '74 SWGP Grays and '75 Plate Post Gray VRs. Interesting the #1 'Holy Grails' and the #2 ranked '74 SWGP Silver Reflektors have closed plates vs the open plate configuration of the #3 tubes.

Both pairs I used here where tested before listening, and were closely matched in sections and balanced across the pair.

 

[Amictus]

Bad things are happening. First of all I warn off a Grado owner from the Lyr because mine has a hum which becomes epic with the low impedance Grados - and folks chime in to say 'Hum? What hum? Our Lyrs are silent." Someone suggested that it might be the tubes - so I tube-roll (the hum is still there) and when I pick one of my preferred go-to tubes I find this:

Which should look like this:

And has been carefully kept in this:

What's going on? Some enemy hath done this.
 
And my Lyr hums.

 

[GrindingThud]

Tube went bad....air leak.

 

[gibosi]

That is interesting on the one with the closed plates - the rest open like the '75 plate posts. I didn't include they 75 SWGP Grays in my review recently. That peaked my curiosity. So I just did a mini face-off between the two. I'll post seperately.

 
Since my amp (not a Lyr) uses only one double triode as a driver, this makes me think I should try to compare the gray '75 SWP with closed plates to the open-plate version. Plus I am still working on a adapter for the Sylvania sub-minature 7963. And I recently picked up a pinched-waist E80CC and a pair of C3g/s - all ultra-linear with frame grids... An "embarrassment of riches".... .

 

[rb2013]

Bad things are happening. First of all I warn off a Grado owner from the Lyr because mine has a hum which becomes epic with the low impedance Grados - and folks chime in to say 'Hum? What hum? Our Lyrs are silent." Someone suggested that it might be the tubes - so I tube-roll (the hum is still there) and when I pick one of my preferred go-to tubes I find this:


Which should look like this:


And has been carefully kept in this:


What's going on? Some enemy hath done this.

And my Lyr hums.

That's a heart breaker! Yes, the vacuum was lost and air seeped causing the getter flashing to evaporate. She's done. This does happen occasionally to tubes. I've never had a Voskhod or Reflektor fail this way, but had a Siemens early '60s CCa die and a Philips Miniwatt...I feel your pain.

Have you called Sch**t up about the hum? Tried other hps? Tube risers, I had one fail on me (check the little gold pins in the receiver socket)? I'd give a different pr of rca connectors a try.

One channel or both?

 

[rb2013]

Since my amp (not a Lyr) uses only one double triode as a driver, this makes me think I should try to compare the gray '75 SWP with closed plates to the open-plate version. Plus I am still working on a adapter for the Sylvania sub-minature 7963. And I recently picked up a pinched-waist E80CC and a pair of C3g/s - all ultra-linear with frame grids... An "embarrassment of riches".... .

Those 7963 are very cool! Rick swears by them.

I'm very interested in your take on the open vs closed plate comparison.
How do you compare the '75 Gray plate posts to the '75 Gray wire posts? To your other tubes?

 

[Amictus]

Tube went bad....air leak.

Thanks, GrindingThud. I shall drink heavily. And my Lyr hums. «{°!°}»

 

[Amictus]

That's a heart breaker! Yes, the vacuum was lost and air seeped causing the getter flashing to evaporate. She's done. This does happen occasionally to tubes. I've never had a Voskhod or Reflektor fail this way, but had a Siemens early '60s CCa die and a Philips Miniwatt...I feel your pain.

Have you called Sch**t up about the hum? Tried other hps? Tube risers, I had one fail on me (check the little gold pins in the receiver socket)? I'd give a different pr of rca connectors a try.

One channel or both?

I shall look up the funeral services for tubes. The hum - I've tried different interconnect and no interconnect and the hum is still there. I've also tried a different mains cable. Thank you for your question regarding the channels - I hadn't thought to check. It's more prominent in the right channel. Faint in the left channel.

 

[rb2013]

I shall look up the funeral services for tubes. The hum - I've tried different interconnect and no interconnect and the hum is still there. I've also tried a different mains cable. Thank you for your question regarding the channels - I hadn't thought to check. It's more prominent in the right channel. Faint in the left channel.

Have tried another hp, even just some ear buds? I have old pair AKG 701s, 62 ohms, I get no hum from my lyr.

 

[rb2013]

Now this is an old audio trick, do so with caution! You can lift the ground by using a 2 prong from 3 adapter. 1st I would get one of those electrical socket testers, the yellow deal with three lights on top. To check to see if the wiring in the wall is correct. You'd be amazed at how many are improperly wired. I always do this before pluging in any equipment.

You should call a qualified electrician, and never mess with your wiring if you are not an expert, same goes for lifting a ground.

 

[Amictus]

Have tried another hp, even just some ear buds? I have old pair AKG 701s, 62 ohms, I get no hum from my lyr.

I have tried the Shure EC4-N IEMs at your suggestion. Same hum. The hum is negligible with HD650 and the HD800, but too pronounced with SR-60i and the RS1i. In all HUMility, I must say that I find this far from HUMorous. As we say in the UK, I have got the HUMp. It is still there when I try the unit without socket savers. I will try it in another house, and then start looking at ground loops. Then maybe exorcism. Or voodoo. Or both.
 
Or I could mail Schiit.

 

[rb2013]

Yes, I've cured more then one or two ground loop hum issues by burning bundles of sage in each corner of the room!

Good luck.