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 Forum

 

Open to all owners plus those contemplating the purchase of a Graham Slee HiFi System Components audio product and wishing to use this forum's loaner program: join here (Rules on posting can be found here)

This website along with trade marks Graham Slee and HiFi System Components are owned by Cadman Enterprises Ltd


Solo Ultra Linear and Planars

 Post Reply Post Reply Page  <123
Author
Ash View Drop Down
Senior Member
Senior Member
Avatar

Joined: 18 Mar 2013
Location: Dorset
Status: Offline
Points: 4334
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ash Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2020 at 8:29am
Slew rate; can the amplifier swing the voltage quickly enough to keep up with the input signal. If not, phase shift and intermodulation distortion can occur.

Max voltage swing will affect dynamic range when you try to turn the volume up. If insufficient, dynamic range can be audibly compressed.

Can the amp maintain the voltage swings? Is it stable enough or does the designer quote peak power rather than stable average power. As power is a rate and you can choose any duration of time to measure an energy transfer, you can greatly skew a measurement of real power. A bit like a velocity-time graph with an absurdly huge acceleration (very steep gradient), but only absurdly huge when consider a short time duration of micro-seconds (for example) and realise that it will not and cannot be maintained over a larger time interval.

Is the load suitable for the amplifier? So called "impedance matching" or "damping factor". If not, the desired frequency balance will not be achieved.


Et al
Back to Top
capetownwatches View Drop Down
Regular
Regular
Avatar

Joined: 08 May 2019
Location: Cape Town, RSA
Status: Offline
Points: 61
Post Options Post Options   Thanks (0) Thanks(0)   Quote capetownwatches Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2020 at 9:58am
All very salient points Ash, these are relevant, reliable scientific data that will guide the user as to the suitability of an amp for a particular use case WHEN PROPERLY MEASURED and interpreted.

problem is most vocal critics don't understand squat about proper, relevant measurements and the interpretation thereof! For them more is always better, regardless of how the numbers were derived.  

Component matching and synergy between gears is a dark art sometimes, and every so often a system sounds wonderful even though the numbers might suggest it should not. All part of the fun of this hobby.

Which is why I like to learn from experienced people who have been there and heard that and understand what really makes a difference. 


Edited by capetownwatches - 10 Jul 2020 at 10:13am
Solo UL=Kingrex HQ1=NFB11.32=LD Mkll=SRM353X=DAC1 USB=RL Concero
LCD2F=HD6XX=SR-L500=DT990 600Ω=TH-X00=K612Pro=K240S=Y50
KRK Rokit 6=Mogami/Sommer->Neutrik/Amphenol
Back to Top
Graham Slee View Drop Down
Admin Group
Admin Group
Avatar
Retired

Joined: 11 Jan 2008
Location: South Yorkshire
Status: Offline
Points: 16298
Post Options Post Options   Thanks (0) Thanks(0)   Quote Graham Slee Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2020 at 10:03am
So, electronics which aren't yet perfected (and probably never will), must be relied upon, to produce even larger signal voltages - capable of driving low-resistance and low impedance cone-attached coils in a box (or, the head-mounted equivalent) - to have greater command on what you hear?

Technology with paganism.
That none should be able to buy or sell without a smartphone and the knowledge in how to use apps
Back to Top
capetownwatches View Drop Down
Regular
Regular
Avatar

Joined: 08 May 2019
Location: Cape Town, RSA
Status: Offline
Points: 61
Post Options Post Options   Thanks (0) Thanks(0)   Quote capetownwatches Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2020 at 10:18am
Oh yes, witchcraft is very much a part of modern audio, did you not know that..? 

"We can't give a scientific explanation, it just sounds better!"

There may well be something to that, but it's not technology, it's psychology.


Edited by capetownwatches - 10 Jul 2020 at 10:19am
Solo UL=Kingrex HQ1=NFB11.32=LD Mkll=SRM353X=DAC1 USB=RL Concero
LCD2F=HD6XX=SR-L500=DT990 600Ω=TH-X00=K612Pro=K240S=Y50
KRK Rokit 6=Mogami/Sommer->Neutrik/Amphenol
Back to Top
Fatmangolf View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 23 Dec 2009
Location: Middlesbrough
Status: Offline
Points: 8960
Post Options Post Options   Thanks (0) Thanks(0)   Quote Fatmangolf Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2020 at 6:09pm
Agreed. I think there is science in Graham's design process, whereas my listening process is subjective. I wonder if there is a bit of fetishisation of specs happening on those sites, like obsessing over a car's maximum speed or engine horsepower. rather than the driving experience?

Anyway in other words the amp's output should be sufficient so it goes as loud as you want without struggling with peaks. I bought my LCD-2's some years back and was really sceptical about the 4 watt headamps they described in fan threads as my portable HD player could drive them well in the shop and I don't even run my loudspeakers at 4 watts! The DAK Novo I had initially and then my Solo Ultralinear had no trouble making the music from my LCD-2's go really loud, although I enjoyed it more at a lower volume level and still do.

Jon

Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC.
Back to Top
 Post Reply Post Reply Page  <123
  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 0.109 seconds.