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In Reply to: RE: BTW posted by Tre' on March 30, 2014 at 22:42:23
I get what you are saying Tre, that it is impossible to create a live event if the original recording was not live but a studio creation. Conversely, each 'track' has to be played live in any case and then all stitched together. So surely all music is live, just not played as a one off gig.
Anyway, my experience with my DC45 amp is I CAN have the illusion of a live event in my music room. Daft Punk at 95db, yes I know that's a little low, have you heard David Guetta live? But I do have neighbours. Sarah Vaughan hitting those long sustained high notes with no sign of compression or distortion. Jason Isbel being intimate and emotional with acoustic guitar.
What my amp, and all the credit should go to Jeff and Dennis, gives me is that live event with see through soundstage, hearing the whole acoustic of the recording studio and the heart of the performance.
These amps are are running at milliwatts and probably have low distortion at these levels plus lower op. point output tubes and overspec transformers and higher output loads and in my opinion MUST be used on high efficiency speakers. Mine 117dB!
There are many ways to achieve live performance in the home, this is one way not the only way. Works for me and others, try it.
Side note, my best friend, Dogman Dave, check him out on souncloud, a British Neil Young came to stay the other week and he played some songs using my standard Vintage guitar not his Martin and after we cranked the volume up on the system and played one of his recorded tracks. He was blown away as to how close it came to his live version he'd just played. That for me was mind blowing.
Please don't let this thread descend into another Jeff bashing outlet.
Thanks for listening.
Smart845
Follow Ups:
117dB 1w/1m seems a bit far fetched IMO , most large format compression drivers manage around 110dB 1w/1m . I seem to remember you mentioned you had Avant Garde speakers . The Uno and Duo are around 104dB 1w/1m sensitivity . I think the Trio is around 109dB 1w/1m
Al
That's right, Avantgarde Duo with the Omega drivers which were 16ohm and I thought 117dB but I may be wrong on that as I believe the sensitivity should be the overall sensitivity and not just the drivers alone.
Cheers
I like this.
Be careful with 95db. Anything longer than 4 hours and you will permanently damage your ears. (some experts say 1 hour)
BTW, I agree. With your speakers a 45 is more than enough power. But I'll never understand why you don't operate the driver tube in a linear spot and/or use a driver tube that has the output impedance that's needed to drive the Miller fully.
Your speakers are so sensitive that you could use a 6sn7 or a 5687. You don't need that high gain driver stage. Try it.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Hi Tre,
Planning on another amp later in the year with more compact chassis and using all I've learnt so far. Maybe this is the chance to give a 6ns7 a try and push the op point higher for the 45.
Out of interest I was told by a respected transformer designer to run the 45 filaments at 3v. Sounds like tube suicide to me, opposite of starved filaments.
I do have to say though that lower gain 12ax7 do not have that amazing jump factor that I get from a Golden Lion 12ax7. The Psavane are nice but less gain and without that special dynamic freedom.
Cheers
Smart845
That's really interesting. Especially a 45 with 3vac on the filament. I would think it would just kill the tube?
It seems, these days, everyone wants to re-invent the wheel.
I will say that the "amazing jump factor" you speak of almost has to be some weird adoration. Gain is gain and if you have enough, you have enough.
But who am I to tell you what to listen to?
In my system I don't even have enough gain to clip my output tube but I have enough to play my system at the levels I want.
Take care,
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
Can't seem to get the video to imbed...The CD of this performance is one of my reference tracks. Listen to the brushes on the snare. This is a beautifully recorded album.
https://www.youtube.com/watch?v=it1NaXrIN9I
Edits: 03/31/14
Very nice recording.
You have to use the old codes.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
No embeds on the ipad but got the you tube.
The DK track is wonderful and again I get that reality of the live concert as though sat at her feet hearing all the clacks and coughs from the audience.
Cheers
Here's a nice, somewhat dry recording that puts Mark's vocal right in the room with you.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
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