• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Velodyne HGS-18 Servo help

M50'sMike

M50'sMike

Member
Hey guys, have been on a long road trying to get my HGS-18 to work properly. Got it used 4-5 years ago, got a new driver and servo which helped, but long story short. I want to make sure the driver is hooked up to the servo properly there's a lot of pins on that side and the sub still cannot seem to produce frequencies below 40hz without "popping". It's most definitely the servo misbehaving, it's not a physical pop, it's not bottoming out and still produces the frequency, but it seems like it can't figure out the correct "rpm" if you will so it produces this buffeting. So I want to make sure I have the driver side of the servo hooked up correctly before I go crazier than this thing has already made me trying to get it to do what I know it's capable of. Hoping some of you might have visual aid. Or might have an idea of what's causing this, also curious if there's an unknown leak in the seal of the box that could cause this. Thanks guys.
 
Register to hide this ad
I have a pair of HGS-12s in pieces right now trying to get either one of them working properly. When I took the plate amplifier off the box, the multi pin connecter going to the accelerometer, wires were coming off the board pointing up towards the top of the cabinet, if you’re looking at it from the side, the wires will go away from the circuit board. Also, the woofer polarity is very important. The wires coming off the woofer went to some spade connectors, and they were very poorly marked with red fingernail polish, which pretty much came off as soon as I disconnected them so I had to mark with a felt pen.

Curious to know if you had to do any electronic repairs to the amplifier circuit? They are notoriously poorly designed and implemented.

Good luck!
 
M50'sMike said:
Hey guys, have been on a long road trying to get my HGS-18 to work properly. Got it used 4-5 years ago, got a new driver and servo which helped, but long story short. I want to make sure the driver is hooked up to the servo properly there's a lot of pins on that side and the sub still cannot seem to produce frequencies below 40hz without "popping". It's most definitely the servo misbehaving, it's not a physical pop, it's not bottoming out and still produces the frequency, but it seems like it can't figure out the correct "rpm" if you will so it produces this buffeting. So I want to make sure I have the driver side of the servo hooked up correctly before I go crazier than this thing has already made me trying to get it to do what I know it's capable of. Hoping some of you might have visual aid. Or might have an idea of what's causing this, also curious if there's an unknown leak in the seal of the box that could cause this. Thanks guys.
Click to expand...
Did you recap the plate amp. I have an older Velodyne F1200 servo sub. Recap did the trick.
 
You must log in or register to reply here.
Back
Top Bottom