• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). There are daily reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Hypex NC500MP mono build

BklynJjm

Member
Joined
May 15, 2022
Messages
18
Likes
3
HI all,
I'm building a NC500MP mono amp to power a Rel Britannia sub. I'll be using a MiniDSP Flex for crossover and DSP. Amp is almost together but I want to check-in to be sure I understand the singal wiring correctly. On the XLR to Hypex board(J4)connection I'm using shielded microphone cable. Is this the correct wiring?
  • Pin 1 on the XLR to case - close to the XLR,
  • Pin 2 on XLR to pin 2 on H-box,
  • Pin 3 on XLR to pin 1 on H-box,
  • cable shield to case (not the same location as Pin 1),
  • cable shield to Pin 3 on H-box.
Thanks for the help!
BklynJim
 

NTK

Major Contributor
Forum Donor
Joined
Aug 11, 2019
Messages
1,893
Likes
3,959
Location
US East
HI all,
I'm building a NC500MP mono amp to power a Rel Britannia sub. I'll be using a MiniDSP Flex for crossover and DSP. Amp is almost together but I want to check-in to be sure I understand the singal wiring correctly. On the XLR to Hypex board(J4)connection I'm using shielded microphone cable. Is this the correct wiring?
  • Pin 1 on the XLR to case - close to the XLR,
  • Pin 2 on XLR to pin 2 on H-box,
  • Pin 3 on XLR to pin 1 on H-box,
  • cable shield to case (not the same location as Pin 1),
  • cable shield to Pin 3 on H-box.
Thanks for the help!
BklynJim
Looks like your wiring connections follow what are specified in the NC400 datasheet, so they should be correct. (The input signal connector for NC400 is J9).
nc400-2.png


nc400-1.png

nc400-3.png
 
OP
B

BklynJjm

Member
Joined
May 15, 2022
Messages
18
Likes
3
NTK - thank you for the diagrams and the assurance that I'm on the right track. Wasn't 100% sure on the signal to case. I think I'll use the "extra" ground pin on the Neutrix connector unless I'm told I should make another connection to the case. Not as pretty as a lot of builds here but it should sound good. Thanks again.
 
OP
B

BklynJjm

Member
Joined
May 15, 2022
Messages
18
Likes
3
Another question for you guys. I bought a cheap case on ebay - the case has is thin aluminum and has "rails" on the bottom. Is that an issue for the heat sink/cooling?
PXL_20220524_233531587.jpg
 
OP
B

BklynJjm

Member
Joined
May 15, 2022
Messages
18
Likes
3
Well - finally fired up the amp to test it and alas no sound. I hear an audible click when turn the on on which I assume is the amp going from standby to on but no sound is coming through the amp. I checked for any DC on the circuit and only see a few Mv. Anyone have any ideas for what I should test next?
Thanks all.
Jim
 

Jim Shaw

Addicted to Fun and Learning
Forum Donor
Joined
Mar 16, 2021
Messages
560
Likes
1,012
Location
Northeastern Ohio, USA, in the woods
Well - finally fired up the amp to test it and alas no sound. I hear an audible click when turn the on on which I assume is the amp going from standby to on but no sound is coming through the amp. I checked for any DC on the circuit and only see a few Mv. Anyone have any ideas for what I should test next?
Thanks all.
Jim
I am of no help at all. Every DIY project I ever built didn't work until some tech white knight rode in on his horse of experience, and bailed me out.
I don't have the gonads to build DIY stuff anymore. <sigh> :)
 
Top Bottom