If those subs actually see 1,000 watts each from that amp you might lose them, but... the likelihood of those subs getting that much power for any damaging length of time from that amp is pretty slim unless you want to listen to them with ear plugs or are in an SPL event.

When you have a high-powered amp feeding lower power-handling subs this is what usually happens: The gain sensitivity on the amp is set so low that the amp only ever produces what you need for the subs to function optimally - in this case it will be around 500 RMS (maybe more, maybe less). Some would say that this is a waste of power potential, others would say that your sound quality will be better with an amp running at, say 25% of rated RMS vs. 100% or more. THD usually spikes just above RMS. THis means if you do reach high power levels for these subs (e.g. 500RMS each for a relatively short time) they should experience a less-distorted signal as compared to pushing them hard with an amp with an RMS level of less than 500 watts.

IMO - your subs will take it (cause they will only ever get what they need) and will probably sound great!

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ECLIPSE H/U - ZAPCO DIGITAL SERIES AMPS - DIAMOND AUDIO HEX/TDX SPEAKERS/SUB