Velodyne DD15 - worth repairing the plate amp?

Thanks, I need to read the manual (already downlaoded a while ago).

I believe the DD manual discusses sub positioning on an earlier page. This "TIP" on page 23 is incredibly important. It provides for the optimum sub to room interface which results in the least amount of amplifier power, guided by the software is used to Optimize and correct an improperly located sub. 

(Page 23 DD User Manual)   TIP: Here’s an easy way to find the optimal position for the subwoofer without moving it to multiple positions in the room. Start by setting the subwoofer up in your listening position. now, move the microphone around the room and observe the response graphs for different room positions. The best position has the fewest valleys and the overall smoothest response.

Since the DD manuals publication rather than using the microphone along with the Sweep Tones the later DD Plus manual suggests using the Subwoofer Crawl (walk) method during the Sweep Tones and listening for and mapping the rooms standing wave bass modes for the optimum sub positions. There are various Youtubes demonstrating the Crawl. Good luck with it. 

I would replace the plate amp.  There are many plate amp options out there.  Parts Express has a good selection.  No need for a very high-end amp on a sub.  I seriously doubt you'll hear a difference.  Concentrate on the inputs, power rating and features you want on it instead.  If the opening size is different, you can cut out the existing hole to match and if too large you can just add a piece of plywood or particle board over the existing hole opening, paint it and fit the new plate amp! 

Replacing the plate amp (or using external amp as I currently do) means NOT having the 'SERVO' control feature the Velodyne was/is famous for. I would assume that this is part of the high regard and performance those Velodyne are known for in comparison to 'lesser' subs. Plus from a budget standpoint: what do you get for say $500 budget? A plate (or external amp) vs a repaired Velodyne with Servo Control/room accoustic. 

Has anyone compared 'just amp' vs 'Velodyne control/amp' ? Maybe the DD15 has a setting 'straight/direct', basically just using the amp and bypassing the Velodyne servo feature?

csmgolf, you are correct. I was wrong about the quick setup button.

There is a second mic input on the front of the DD-15 and 18. So you don’t have to move the subs to connect it.

Replacing the plate amp with another is not really an option considering the power(1250 watts) and abilities of the Velodyne model. And there’s also a video output for complete setup.

I have the older Velodyne F-1500 been in continuous use for 30 years. Starting to. notice some odd low level sounds fluttering buzzing. Would that be caps needing replacement. Still sounds great to me just noticed the sound when I am up close to it and the level is low. Thinking I may try to re cap myself. Anyone here done it? how difficult is it?