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Infinity IRS Epsilon, which version?

Discussion in 'Infinity Loudspeakers' started by Are Gjerde, Sep 2, 2017.

  1. Are Gjerde

    Are Gjerde New Member

    Messages:
    25
    Hi

    I was so lucky to obtain a well kept pair of Epsilons recently without an SCU. I searched for a replacement SCU like crazy for a while and it finnaly panned out.

    I've got hold of one from Denmark and its marked rev. A, So I know this is the IF80008A version.

    My speakers are marked with the serial number: 121 A/B, but I can't find out if its IF30003 or IF30003A. The owners manual says to not mix the first and the seccond model between SCU and speakers.

    So my question is, how do I find out if they are compatible?. In the service manual I see there is information on how to make the IF30003 accelerometer into a rev A. Do I have to open my speakers to find out which I have? And if so, where is the accelerometer positioned? I cant see it on the Exploded view in the manual...
     

     

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  2. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    Check under the gold faceplate on the back of the speaker, one of mine has it marked with a small sticker, my other speaker the sticker fell off, mine is marked on the bottom but I have seen them marked on the top in between the batteries, here's a pic. IMG_2834.JPG
     
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  3. Are Gjerde

    Are Gjerde New Member

    Messages:
    25
    Unfortunately, there is no stickers apart from one with serial number on.. but would there be one on the first? I've got to be sure before I connect up the SCU...
     
  4. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    That sticker in my pic is the serial # of my speaker but rev A is attached or in front of the serial #
     
  5. Are Gjerde

    Are Gjerde New Member

    Messages:
    25
    Hm.. I have stickers in both my speakers, but golden ones. Only serial numbers. Maybe that means I actually have the first version. The only difference lay in the accelerometer, right? Do you know how I get to look at it? Do I have to get the front off and go inn behind sub or can I get in if I undo bottom?

    Are
     
  6. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    One of mine is like yours with only the golden sticker on it, I took the back off of mine once, I think it would be easier to take the bottom off but don't know if you will be able to see it from there, here is the service manual, if you go inside you might need this to recognize the accelerometer board
    https://1drv.ms/b/s!AhHWCBRVD6phaziwhzjaTRtKblQ
     
    Last edited: Sep 2, 2017

     

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  7. Are Gjerde

    Are Gjerde New Member

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    25
    Took a picture of the Pcb. It doesn't look like either in the service manual, but closest to IF30003A? I'm confused..
     

    Attached Files:

  8. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
  9. Are Gjerde

    Are Gjerde New Member

    Messages:
    25
  10. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    I don't see any of the pics in the link you added, they are all gone.
     
  11. Are Gjerde

    Are Gjerde New Member

    Messages:
    25
    IMG_0240.JPG IMG_0241.JPG
    I found them doing google picture search "Infinity Epsilon pcb". They just don't show up on the forum... here:
     

     

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  12. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    I took my gold faceplate off and removed everything out of the way and here's what mine looks like, mine has a copper wrapping attached around the board, probably to isolate from other components? Last pic is the back of the gold plate, I'd say mine looks like the original version board? but I clearly have rev A scu and Rev A board behind the faceplate.
    IMG_2838.JPG IMG_2836.JPG IMG_2837.JPG IMG_2840.JPG
     
    Last edited: Sep 3, 2017
    Are Gjerde likes this.
  13. Are Gjerde

    Are Gjerde New Member

    Messages:
    25

    Attached Files:

  14. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    I just checked my other speaker to see if the board was the same, you never know Lol, it was, I confused, either infinity got the boards reversed in the service manual or they used the older style boards on some of the first rev A speakers but wired them differently to make them rev A who knows, did you see if your other speaker has the same board in it?
     
    Last edited: Sep 3, 2017
  15. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    Just found this one on the net rev C , does not look like any of ours
    download.jpg
     
  16. Are Gjerde

    Are Gjerde New Member

    Messages:
    25
    Goodness... that looks the same as the one in the service manual. Same circuit though I think...
     

     

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  17. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    Was talking about it with my brother and he said it looks like mine was the latest ver A because of the added copper shielding wrapped around the PC board that earlier versions didn't have, he said it probably helped with not picking up noise from the speakers magnet and voice coil and the other boards in the speaker, makes sense.
     
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  18. Are Gjerde

    Are Gjerde New Member

    Messages:
    25
    I will open the other speaker too due to curiosity. But thanks okeeteekid for helping. This is the third time you've really helped in short time:)

    This means my speakers are definitely compatible with the SCU right? I'm not getting it wrong now?
     
  19. Are Gjerde

    Are Gjerde New Member

    Messages:
    25
    Yes it does. What's the serial number of your speakers? I also wonder how many pairs were made as I never se really high serial numbers...
     
  20. okeeteekid

    okeeteekid Well-Known Member

    Messages:
    831
    Location:
    Northern NJ
    161-B 062-B
     

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