Eminent Technology ET-2 Tonearm Owners

If appears you've struck an ET 2.0 2.5 motherlode Manitunc.

Big honkin air chamber. 6" pvc about 2.5' long

An indicator to me that someone understood how important air delivery was and was careful with his stuff.

thats the type of surge tank - PVC - different dimensions that I used with my Medo pump before my current one.

Look inside the pipe - maybe there is a surprise :^)
But its probably sealed with silicone.

Would have liked to have seen the look on your face when u opened up the package.

Did you get multiple I beams or a set of loose leaf springs in any of the containers?
With multiple cartridges on different ET2's and a ET 2.5, I would be setting up some single, double, and triple leaf spring I Beams ready to go - to dial the cartridges into your room.

What a great hobby? Congratulations

I have some extra I beams,but not leaf springs. What is the advantage of multiple leaf springs or am I now entering another world of obsessive complusive behaviour.

Yeah, the tank is much bigger than my previous 4" round, 18" long chamber. What PSI does the et2.5 run at?

am I now entering another world of obsessive complusive behaviour

LOL - imo its never OCD when you are actually changing the laws of physics and are able to hear it in your room. Vinyl is an electro mechanical vibration resonance hobby.

Try this test Manitunc and anyone else.

Fetch a white plastic juice or other fluid container from your recycling bin.
Using a flat side cut a small piece of plastic out - a little smaller than your leaf spring on the I beam.
Now insert it into the gap where the leaf spring is, making the I Beam more rigid.
Now play a few really familiar records. Do you hear any difference in your room as far as sonics go.
If no change carry on with life as normal.
If you do hear a change and don't care; carry on with life as normal again.
If you do hear a change and are a little curious - do this proper as it costs only a couple of dollars.
Have Bruce send you a couple I beams and loose springs to make into a double and triple I Beam so you have one of each to try with your cartridge or cartridges.

Manitunc have a closer look at all those I Beams you now have. You may see in fact two springs glued together already.
Some may have a small square damper on them while others may be just one naked spring glued in.

What PSI does the ET 2.5 run at?

Ask the person you bought it from what PSI Bruce set it up for. Hopefully he will know.

Cheers

"imo its never OCD when you are actually changing the laws of physics"

this comment came across wrong and was not what I meant. I take it back since this particular thread does not allow one to edit. the rest of the post stands :^)

I dont think the seller knew much and may have been selling for someone else. No indication he know that the two arms were even different from each other.

but, I will try your plastic piece idea.