The Real Lightspeed vs Eva - no monkey bottoms!

edited January 2012 in Other hi-fi gear
Right. For those interested in attenuators, this is the place. Otherwise, for apes' arses, please try elsewhere.

In one line: the Lightspeed built by the man himself in Oz wins out over my sick Eva 2.

But does that mean anything? Maybe the channel waning on the Eva is having more than just an effect on sound level. I don't think so. I'm pretty sure the Lightspeed makes a better fist of dumping a chunk of acoustic in my room than the Eva ever did - it certainly trounces it now. The overall effect is just that bit more 'organic' than the Eva. 

I thought to begin with that the Lightspeed was doing the unforgivable and taming the NVA/Royd combination, but it isn't. Transients are still as sharp and shapely (forgive me, I used to be a reviewer :-) ) as they ever were. They're just coming at me from within a more believable space.

So far, I like the Lightspeed a lot.

Anyway, I've ordered my assembled Lightspeed boards from Paul Hynes (I realise I also need to order the matched LDRs from Uriah(?)), and in a few weeks should have a remote controlled Lightspeed. Looking forward to it!
«1

Comments

  • I should also mention I'm using the wall wart PSU with the Lightspeed and the KingRex PSU with the Eva 2. so the Lightspeed is possibly handicapped by not having a nice power supply.
  • Interesting, not unexpected either. My suspicions are confirmed.

    I will see what Col comes up with and whether it can be remote controlled before deciding what to do. Either way, EVA is on borrowed time....
  • James has said to pass the Lightspeed on to you once I've finished with it.
  • That's very good of James - I say we let him stay for another week!

    I will be interested in a home comparison. I need some organic percussive events in my life!
    :-D
  • I can hit you with a Hammond B3 if you like  :-"
  • Funky! Now that would be the way to go....
  • Will the KingRex PSU work with the Lightspeed Dave? I didn't consider a dedicated PSU for the Lightspeed. The issues I have with it won't be resolved by a dedicated PSU, but it's interesting to know it makes a difference.
  • It won't unfortunately. It's 10V while the Lightspeed needs 12, I think.

    What were your issues with the Lightspeed?
  • Weren't you using it to attenuate an active system? That is quite an unusual application I should think.

    Dave -maybe a friendly Jim could find a way to 'adjust' the King-Rex.
  • My issue is that I've switched to active speakers, with longer cable runs than before. The Lightspeed doesn't sound as good in this setup when compared to my active pre. I used a buffer for a while in-between the Lightspeed and my speakers, but didn't like having so many components in the chain. Ultimately I'd like the Young with a digital volume control.......Oh yeah, that'll be the Vaughan wont it :-)
  • He he - best get saving by all accounts!
  • Dave -maybe a friendly Jim could find a way to 'adjust' the King-Rex.
    S'funny. I wondered about taking the lid off the KingRex...
  • My issue is that I've switched to active speakers, with longer cable runs than before. The Lightspeed doesn't sound as good in this setup when compared to my active pre. I used a buffer for a while in-between the Lightspeed and my speakers, but didn't like having so many components in the chain. Ultimately I'd like the Young with a digital volume control.......Oh yeah, that'll be the Vaughan wont it :-)
    Yup. I wondered about that.

    Back in the deep dark past when I had cupboards full of review cable and manufs wanting to keep me sweet I had a set up with two monoblocks and a home-made passive. I found, after much experimentation, that the best combination was long interconnects and short speaker cables.

    I'm not suggesting you start experimenting with long interconnects. You could bankrupt yourself in the process!

    If only we all could afford a Vaughan...
  • George (of Lightspeed fame) suggested I should keep the interconnect length at 0.5m between the Lightspeed and power amps. That was feasible when I had power amps separately, but now they are inside my speakers I end up with longer interconnects. This, coupled with the impedance of my actives means the
    Lightspeed doesn't sound as good as an active pre. I suspect the impedance matching is more to blame than the interconnect lengths.....although I'm not in the least bit technical and could be completely wrong!
  • That all makes sense. The long interconnects may also be contributing to the impedance mismatch.

    Two steps forward, one step backwards (if you're lucky) :-)
  • Interesting George's comment about optimum length I/Cs. It kinds of gives credence to the notion mentioned earlier about hard-wiring your I/Cs into the pre.
  • Too many variables in this hobby :-D

    Watch out, here comes another one.....RCA to XLR adaptors! Another topic for another day.
  • Balanced vs unbalanced is an interesting one. Some very strong views on both sides of that one.

    Did Col put balanced inputs on the back of his amps? My NVAs don't have them.
  • I've got XLR in on my speakers and RCA out on my pre which means using Neutrik adaptors. Would rather have XLR at both ends of the equation.....technical reasoning aside it just looks neater :-D XLR seems to be an increasingly common sight on the new wave of DAC/Pre's.
  • PAC of this parish makes cables that are very good by all accounts. He could terminate each end to your specification.
  • I was just thinking that.

    He made some specially terminated cables for me and they are very well made, a great job.
  • Well, I just plumbed in my NVA pre again (I must have no life....) as the slight channel mis-match from EVA is becoming a pet hate. Rather like the slight channel mis-match I used to get with the twin-pot NVA pre did actually! D'oh... Actually the EVA mis-match seems to fluctuate, weirdly.

    Well, I feel I am coming to something of a cross-roads with the pre situation. The NVA P90 tonight was like putting a sheet over the speakers with the lost detail - I also lost a good deal of the '3d' in my imaging. I went back to EVA after an hour & a half and was much happier. The music seemed to ebb & flow better, to have a sweetness about it again, an effortless presentation of tiny details. Maybe it's because I am listening to female vocalists and pianos this evening, but the LDR seems to let the emotion flow from the music again.

    So I feel like I am done with a conventional pre. But why not be done with a pre altogether?
  • I wonder if your Eva is starting to go west like mine? 
  • edited September 2011
    I never played Pet Shop Boys on it?

    :-)

    TBH, it's always done it & it's getting no worse.
  • Good point.

    I'm going to take mine apart and see if I can get it straight. It would be good to be able to sell it on confident that it isn't going wrong.
  • Ask Paul (quickie) if he'd take a good look. He knows stuff. And he's nice.
  • edited September 2011
    I don't know quickie. I'll ask him if my own attempts and wiggling and pushing components doesn't work - remembers some of the suggestions when it went wrong the first time?

    Probably significantly, it hasn't lost the channel 100% this time.

    Meanwhile, I'm really liking the Lightspeed :-)
  • .....So I feel like I am done with a conventional pre. But why not be done with a pre altogether?

    Good question Alan. I suppose this is where the distinction between pre's and attenuators needs to be made. It sounds like your preference is to simply attenuate the signal.

    On paper I agree with this approach, but my Audio Note pre seems to inject more life into my music than any kind of Attenuator or digital volume control that I've tried. Perhaps I've just not tried a properly implemented digital volume control ala MDAC.

    I only have one source so I've no need for anything more sophisticated than these LDR's in terms of inputs, yet each time I try an alternative to the Audio Note I find
    myself with it back in my system within an hour.
  • edited September 2011
    Just to put the cat amongst the pigeons...I do need my pre-amp attenuation for my digital source - the TFS. "Why...?" I hear you ask...
    Well, as I have now fallen more deeply in love with the TFS' sound using ASIO (as opposed to WASAPI event style) I need the attentuation for the "ASIO" TFS. ASIO bi-passes all the software that controls the TFS volume (perhaps one of the reason that it sounds better to me...?), so attenuating volume digitally is impossible when I use the TFS with ASIO (as I now always do).
    I suppose I should compare the sound of:
    1. The "ASIO" TFS + NVA P90SA attenuation with;
    2. The "WASAPI event style" TFS + no pre-amp with;
    3. Standinding well back, the "ASIO" TFS + no preamp ;-).
    But, as I need the preamp for the other sources anyway, any setup that does not include a preampin not a long term option.
  • Yup, that complicates things Ben. You need to do a comprehensive comparison really.

    James, I hear you - I suppose it is all system dependant as well as personal taste.
  • The latest from the Lightspeed vs Eva contest comes from my visit to Jim's last week.

    I left the Eva 2 and PSU with him, and he found that the channel imbalance is not down to the LDRs, but to one of the chips. More interesting for @Alan, he found that the imbalance disappears after 23. Now, that's much louder than I can play the system, but Jim told me he used a combination of software volume control and the Eva to allow him to operate the Eva in the band where the imbalance no longer occurred.

    When it comes to sound quality, Jim agrees that the Lightspeed is much better than the Eva and he's so impressed he may well be building a remote version for himself once we've built mine.
  • Tres interessant!
  • Yup. I thought so.

    And there's more to come from last week's trip, once I get round to writing up and posting it ;-)
  • Wonderful, I an bating my breath in advance.
  • edited December 2011
    So James' Lightspeed is all packed up and ready to go. I hope the queue at the PO tomorrow is not out the door as it was today. In any case, I'll be going to the central one, where they have more than two people serving at any one time. Doncha hate going to the Post Office?

    The remote control Lightspeed modules I ordered and paid for months ago from Paul Hynes have still not arrived, but hopefully sometime soon. I'll tell you the full story when it comes to a conclusion - or if it never seems to be coming to a conclusion ;-) I remain optimistic that I'll see them in 2011.

    What I can say is that the Lightspeed, like Tootie Ma, is a Big Fine Thing. I understand James (@Brumjam) will be selling the Lightspeed I've been enjoying for that last few months, and all I can say is that if you want a ready-made Lightspeed quickly, fall over yourself to give him some ackers. It's that good, as long as your system will support a passive.
  • edited December 2011
    Initial thoughts are a very much improved image, and excellent presentation of little details. But it's the soundstage that's really notable - "sounds are coming from a more believable space" or something? I think I understand what Dave means now (although a shapely percussive event eludes me still...)

    Also a good sign - the rig seems 'quieter' - more in control. You know, when you can talk more easily over music without raising your voice and be easily heard. Perhaps this is the root of Dave's early (and quickly revised) impression that the lightspeed calmed things down a bit?

    I'm just aching to sit down and enjoy some quality music time now, but due to a cold I'm just aching full stop. I hope I'll get to properly know the lightspeed shortly, but the first listen is nice and positive.

    I have a hunch that what it is doing is dovetailing very nicely with my new TQ speaker cable, which I haven't yet properly evaluated either.


  • Guess what happened today?

    Yup. My Remote Modules finally arrived from Paul Hynes. Three months of delays are finally over.

    Now I need to get a couple of cases, a PSU and a little assistance.
  • Glad you found your modules.... Ooh er!

    You just need a Jim who wears his pants outside his trousers now!
  • Well, I have a Jim lined up, so it's now just a case of setting a date and buying some boxes etc.

    Can't wait!
  • What pre are you using in the meantime Dave? I sold my P90, but I still have an EVA and PSU if you're stuck.

    Those yawning gaps aren't so stimulating!
  • I'm not. The big rig remains silent. I was ill over Christmas and the New Year and didn't feel at all like listening to music.

    Thanks for the offer, but I hope to have the Lightspeed put together in the near future.

    There's another story about that unfolding ATM. I'm trying to source a Remote case - ie an empty remote that I can put PH's transmitter board in.

    Has anyone any ideas where I can get such a thing? Paul? Col?
  • what costs these would total to? i'm wondering where it is in comparison with the existing, ready made LDR preamps....
  • Probably just over £200, once I get everything together.

    The reason I'm going DIY is that I want the remote, and it's the only way to do it AFAICS.
  • Remote cases sound a bit specialised, I wouldn't have a clue where to get one. PH himself would probably have some idea, as he makes a lot of bespoke and low volume (-volume!) items. In fact, I'd be surprised if he couldn't help.

    Otherwise, there isn a forum called DIYAudio. I would recommend the search button...

    I didnt know you were ill? I hope nothing serious? (and that you feel better now, of course)
  • BTW, this lightspeed is really very nice, you were right to plug it Dave, but I also mourn the loss of a remote...
  • Remote cases sound a bit specialised, I wouldn't have a clue where to get one. PH himself would probably have some idea, as he makes a lot of bespoke and low volume (-volume!) items. In fact, I'd be surprised if he couldn't help.

    Otherwise, there isn a forum called DIYAudio. I would recommend the search button...

    I didnt know you were ill? I hope nothing serious? (and that you feel better now, of course)
    Yeah. I e-mailed him earlier.

    I also wonder if a 'universal' remote might do the trick. Question also with PH.

    I got manflu about 10 days before Christmas, and it still hasn't quite gone. Feeling much better though, thanks for asking.
  • BTW, this lightspeed is really very nice, you were right to plug it Dave, but I also mourn the loss of a remote...
    It's good. Glad you like it.

    Once I've got the wrinkles out of this build, you might want to consider the remote version.
  • I may do that, missing the remote as I say. If I did DIY a pre I would defo hardwire the I/C cables in.

    I am very interested to see what Col comes up with, I think that will be in kit form. Of course, I struggle with putting a jigsaw puzzle together!
  • Hardwiring may be a good idea. Need to think about the pros and cons.
  • i didn't follow a LDR problem with remote control but is there really a problem. AFAIK a pot there is not used for signal path rather to control the attenuation of photo cells therefore you can put any motorized pot there and a problem solved. or am i getting it wrong here?
Sign In or Register to comment.