Velodyne DD15 - worth repairing the plate amp?


The amp in my 2008 Velodyne DD15 is dead as a door nail. 

How good is this old marvel compared to today's offerings?

Worth investing another $500 (to have amp repaired, incl roundtrip shipping, tax, etc)? Or just use as passive sub?

How does it compete to modern subs, for example SBS SB-2000 or SB-3000 (both under $1k pre owned)?

kraftwerkturbo
@m-db Mine was a DD18 made in 2006.  I'm not complaining about the failure.  It went 17 years with no problems and I got it fixed for not that much money.  
whart Those Class D plate amps with 'electronic' (can't think of the term) power supplies (without the huge/heavy transformers and coolers) are very light and cheap to ship. My LT1300 plate amp is 40 lbs, this one is maybe 5 lbs. 

I just picked up an Earthquake MiniMe DSP P12,  at $640 ($1300msrp) it was a great value and perfect for movies and non critical music , but my brother's HGS 15 walks all over it.  

Those big Velodyne have great pitch definition and really dig deep.  

CORRECTION: My Velodyne Plus subwoofers have been in my service for 12 years, not 22. Velodyne CA. Digital Drive Optimization technology may be over 20 years old beginning with the SMS-1. My apologies.

["On the other hand my current Plus 12’s and the 10 Plus are over 22 years old."  "set between +1 - +5dB between 38Hz - 15Hz for the past 22 years."]