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Some bad news made up with good news

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In Reply to: RE: Arrived safely! posted by E-Stat on January 22, 2016 at 10:03:13

Bad news: the Kaki King concert was cancelled due to the weather. We ended up driving about three hours before getting the email and had to turn around.

Good news: I've been able to make progress with wifey's help. I was going to wait for best friend neighbor to help but she insisted.

1. Step 1 - Remove a boat load of screws. Twenty-four in each core and sixteen for each backplate. Take out backplate and disconnect wiring.

2. Step 2 - Move ~100 lb cores to storage room above garage. Carry each one down stairs, then through hallway and kitchen to garage and back upstairs to box storage. Not much fun.

3. Step 3 - Place old cores in their crates which were separate unlike the new ones.

Wifey got a bit tired, so I told her we got plenty done for today! I'll wait for neighbor to move the new ones upstairs and carry giant crate upstairs to storage area.

Follow Ups:

RE: Some bad news made up with good news - Cameraman 12:12:44 01/24/16 (5)
Do you wear plastic gloves while setting up while its hot?
Thanx Bill
- Hot as in temp or plugged in? - E-Stat 12:49:12 01/24/16 (4)
  It's certainly not hot now where I live.
  
  I let them power down for two days before disconnecting the backplate, aka power supply, from the the panels. Similarly, the three wires from each new panel are connected to the backplate with it unplugged and "cold". Bias control on each turned all the way down.
  
  Then power them up and set the optimum bias level.
  - RE: Hot as in temp or plugged in? - Cameraman 13:15:33 01/24/16 (3)
    Sorry I meant current wise I have used rubber gloves but I have gotten a jolt before.
    Are you gonna fill the struts?
    Thanx Bill
    
    Edits: 01/24/16
    - RE: Hot as in temp or plugged in? - E-Stat 13:20:59 01/25/16 (2)
      I learned decades ago with Acoustats to short one of the two primary leads to the center one first to discharge any remaining voltage from the panels. I've never had any trouble following that procedure.
      
      Honestly, I'm not convinced that adding any more mass to the three inch tubular steel frame will improve their performance. The cores alone weigh about that of a Magnepan 20.7. Then add the massive steel frame and the weight of the backplate power supply.
      - RE: Hot as in temp or plugged in? - Cameraman 13:31:35 01/25/16 (1)
        
        In Reply to: RE: Hot as in temp or plugged in? posted by E-Stat on January 25, 2016 at 13:20:59
        
        I remember on my 1+1 and 2+2 Acoustat made it easy.
        Here we filled up the struts with led shot but were slick enough to use bags so it came out easy. After filled it with spray foam just to tame some ringing made a difference.
        Thanx Bill
        
        Understood - E-Stat 13:39:32 01/25/16 (0)
        
        In Reply to: RE: Hot as in temp or plugged in? posted by Cameraman on January 25, 2016 at 13:31:35
        
        Having owned both the 1+1 (still have a pair) and 2+2s, I can tell you there is little similarity between those and the U1-PX.
        
        Each steel frame weighs considerably more than an entire 2+2 including the power supply for a total of 270 lbs each.

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