Eminent Technology ET-2 Tonearm Owners

Dover.
"yet again you miss quote me"
I think not. See your post 03-13-13. Where you go to great lengths to show, incorrectly, that when tracing eccentric records, my arm is 300% heavier than a standard ET2.
The leaf spring is inactive at eccentric record frequencies. ALL ET2's and my arm are of similar effective mass as seen by the cartridge under these conditions.

I am on record stating the clear superiority of the oil trough over my previous low pressure damping method.

Dover
"provide damping in the vertical plane and less in the horizontal"
Wrong. A quote from the oil trough manual "The design of the paddle and its position mean that it will be much more effective for damping horizontal resonances than vertical"
This is a simple paddle shape and lever effect. The arm has no leverage over the oil paddle in the horizontal plane but has the full length of the arm wand in the vertical. The target is horizontal damping. This is why BT publishes the before and after responses of horizontal resonance. Where the nasty high Q resonant peak is effectively eliminated.

Frogman.

If you are using a low compliance cartridge, have you tried a properly stiff fixed counterweight with an oil trough fitted? Disabling the leaf spring(s), say by wedging match sticks in the gaps, gives a hint at the effect, but the counterweight I beam is too flexible (it was never designed to be stiff) to show the true differences.

Hi Greg

I looked at it again and see that the pump has just come loose from the springs. The intermediate shelf looks solid and the springs are still attached there. What I can see of the spring mounts on the pump look ok too.

I suspect it was banged around or dropped and that pulled the pump loose from the springs... and then it was banged around a lot afterwards to nearly pulverize the plastic housing.

that is a little better news. the shipper must have had the thing close to upside down at one point for it to come off one of the springs? That Timeter pump hanging in its enclosure, reminds me of the pics and videos I have seen in the past of those eccentric vinyl guys (women audiophiles would never do this ?) who hang their entire turntables from the ceiling beams with long thick cables for isolation and to avoid vibrations. Thats the idea here as well and the first time of I have ever seen a motor mounted this way.

Look forward to hearing your progress with it. Cheers

Greg.

Good luck with the pump rebuild.
Chris has taught me the extreme importance of the air supply. A good smooth source of air lifts the arms performance considerably.

****Chris has taught me the extreme importance of the air supply. A good smooth source of air lifts the arms performance considerably. ****

Completely agree; and analogous (pun intended) to the importance of good clean (smooth) power for our electronics.

Sharing part of an interesting article I am came across today on vinyl.

(Reproduced in part from the entertainment section of today's Toronto Star Newspaper)

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Interviewer - But what, exactly, are we talking about when we say that vinyl sounds warm?

“The bottom line? As humans listening, we do not like square waves,” says renowned producer/mastering engineer Peter J. Moore, known for his legendary one-microphone recording of the Cowboy Junkies’ Trinity Sessions.

OK, so in layman’s terms, what is a square wave?

“It’s when you go from absolutely quiet to super loud with no time at all,” says Moore, who has also worked with everyone from Holly Cole to Neil Young.

Sensing, shall we say, a lack of comprehension on the other end of the line, Moore gamely tries to illustrate his point without the benefit of diagrams or hand gestures. (Any perceived ambiguity in his explanation is our fault, not his.)

“If I slap two pieces of wood right beside your ear, that’s about the only time in the real world that you would feel a square wave,” he says.

“That would make you jump out of your skin.

“Digital, especially MP3s, reproduce square waves like crazy. That actually upsets people! You’re triggering your fear, which also triggers fatigue. It’s unnatural.

“Now, if I was across the room and slapped two sticks together, it would take time for that wave to travel to you and by then the square wave has rounded off.”

And what does that have to do with vinyl?

“A turntable playing a vinyl record could not reproduce a square wave if it tried.”

Why can’t it?

“If I have a wire that’s one-inch long, it takes no time for sound to travel over that wire. But in the coil in a turntable cartridge, that wire is very long and it’s wrapped around a magnet. So it takes a lot of time to get through that magnet and come out the other side. By the time it comes out, the sharpness, the ugliness has been rounded.

“That,” says Moore, “is what people mean by warm.”

(Reproduced in part from the entertainment section of today's Toronto Star Newspaper)