Bitcon to $240 dollars, never.
It could go down that much, but that doesn't mean that OMNI and AMP would follow.
By then ETH or Monero or DASH would have probably replaced BTC, so we would just count AMP relative to those, but in $ amount it would not crash that much.
In the very slim outside chance (I don't see it myself) that BTC does crash x10, the fact that nearly every alt coin is traded against BTC means that all alts will crash in price too, that means the dollar amount will crash also.
Edit: Nothing will replace BTC, it's the Grandaddy .