New Posts New Posts RSS Feed - Solo Ultra Linear and Planars
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Welcome to the Graham Slee Audio Products Owners Club

 

Open to all owners plus those contemplating the purchase of a Graham Slee audio product wishing to use our loaner program: join here
Subscribe to our newsletter here (Rules on posting can be found here)


Solo Ultra Linear and Planars

 Post Reply Post Reply
Author
capetownwatches View Drop Down
New Member
New Member
Avatar

Joined: 08 May 2019
Location: Cape Town, RSA
Status: Offline
Points: 35
Post Options Post Options   Thanks (0) Thanks(0)   Quote capetownwatches Quote  Post ReplyReply Direct Link To This Post Topic: Solo Ultra Linear and Planars
    Posted: 23 Sep 2019 at 6:29pm
A quick question if I may. I own Audeze LCD2F planar magnetic headphones and to my ears my Solo UL drives them as close to their full potential as any amp I've owned.  

Contrary to popular belief, they are sensitive (70R / 101dB/mW SPL) and don't need close to the 1W-4W that Audeze used to recommend. Being planars the load is purely resistive. What they DO need to bloom is plenty of voltage, and I was curious as to whether the UL provides sufficient? What is the maximum V out of the jack?

As I haven't managed to find any data online or on these fora I thought I might enquire here?
Solo Ultra Linear=Kingrex HQ1=NFB11.32=Little Dot Mkll=SRM252S=Benchmark DAC1 USB=RL Concero
LCD2F=HD600=SR207=DT990 600Ω=K612Pro A=K240S=K171Mkll=M4U2=Y50
RCF Ayra 5=Mogami/Sommer->Neutrik/Amphenol
Back to Top
Graham Slee View Drop Down
Admin Group
Admin Group
Avatar
Telling it as it is

Joined: 11 Jan 2008
Location: South Yorkshire
Status: Offline
Points: 8907
Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 23 Sep 2019 at 8:10pm
Max out is the IEC recommended 5 volts r.m.s., but the original UL uses output impedance correction feedback so I couldn't tell you what voltage will appear across 70 ohms without sticking the UL on the AP... but I don't have a UL. Embarrassed
Not simple enough for Google-Bot to understand...
Back to Top
capetownwatches View Drop Down
New Member
New Member
Avatar

Joined: 08 May 2019
Location: Cape Town, RSA
Status: Offline
Points: 35
Post Options Post Options   Thanks (0) Thanks(0)   Quote capetownwatches Quote  Post ReplyReply Direct Link To This Post Posted: 24 Sep 2019 at 8:34pm
And I'm not lending you mine...Wink
 
At anything approaching 5V my eardrums would vaporise.
So the short answer is "sufficient". 

Solo Ultra Linear=Kingrex HQ1=NFB11.32=Little Dot Mkll=SRM252S=Benchmark DAC1 USB=RL Concero
LCD2F=HD600=SR207=DT990 600Ω=K612Pro A=K240S=K171Mkll=M4U2=Y50
RCF Ayra 5=Mogami/Sommer->Neutrik/Amphenol
Back to Top
morris_minor View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 27 Mar 2012
Location: Surrey
Status: Offline
Points: 4625
Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 25 Sep 2019 at 9:26am
I've no idea of the voltage requirements, but my UL drives Audeze LCD-2s to spectacular heights. And, incidentally my Novo/MrSpeakers Eon Flow Open is a super pairing too.
Bob

Majestic DAC/pre-amp
Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
2 x Proprius + Spatia/Spatia Links
Back to Top
capetownwatches View Drop Down
New Member
New Member
Avatar

Joined: 08 May 2019
Location: Cape Town, RSA
Status: Offline
Points: 35
Post Options Post Options   Thanks (0) Thanks(0)   Quote capetownwatches Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2019 at 5:59am
I have not yet come across a headphone that my Ultra Linear does not drive to its full potential, and I've used quite a few (see my signature). Output impedance correction feedback does what it's designed to do. 

I would very much like to compare my pre 2012 non-DE to the current DE model, which has no impedance correction (yes, another shameless hint...) Wink
Solo Ultra Linear=Kingrex HQ1=NFB11.32=Little Dot Mkll=SRM252S=Benchmark DAC1 USB=RL Concero
LCD2F=HD600=SR207=DT990 600Ω=K612Pro A=K240S=K171Mkll=M4U2=Y50
RCF Ayra 5=Mogami/Sommer->Neutrik/Amphenol
Back to Top
Ash View Drop Down
Senior Member
Senior Member
Avatar

Joined: 18 Mar 2013
Location: Dorset
Status: Offline
Points: 2920
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ash Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep 2019 at 9:54am
The Solo UL can even drive the AKG K1000 fully, as long as the drivers aren't opened out fully. At open halfway, the upper areas of the Majestic and Solo dials provided full drive to my ears, compared adjacently to Majestic into Proprius and I couldn't hear a difference. Both sounded equally good for such a low efficiency and high impedance load.
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.01
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.125 seconds.