Velodyne DD15 - worth repairing the plate amp?

Every Velodyne sub of that Era will fail.   I sent my Dad's plate Amp on his HGS 10 to EBC in NJ about 5 years ago and it's been great since.   

My HGS died,....   my brother has an HGS 15 that was never used before he got i5 and it works but it's just a matter of time. 

They are good subs and it's a reasonable cost to repair

mofojo Yup:

Option 1: Repair (invest $500), total value $800-$900

Option 2: that is my 2nd option. Actually have two Class D on hand. Connect directly to sub out of receiver. But then do NOT have the Velodyne 'feedback control', and not sure how much that contributes. "invest" $300. 

Option 3: sell DD-15 with defective amp as is (including Velodyne measuring microphone and rest of original acessories kit), going rate $300-400 or so. Replace with 'modern' sub $800 budget. 

oddiofyl I have quote from EBC; they would be the one I sent the amp to for repair if going that route.

Just not sure how good the DD-15 compared to others/modern in used condition and value range. 

asvjerry see 2nd option above, but no feedback control (and no auto on/off, and no crossover control beyond what receiver allows). 

Another plate with sufficient power: probably better to repair the existing for about $400 (shipping, taxes incl). Luckily, those class D are light. 

Converting to passive is super easy. Currently have the plate amp out, found one discolored area that likely is the culprit (incoming power module).

I'd definitely look into fixing it yourself.  Google is your friend.  You'll learn a ton and gain some appreciation for it, save some money, and salvage a worthy older piece from the scrap heap.  Win, win.  Some new subs may be better, but they won't come cheap, and won't be that much better if you set it up well.