Only minor thing I would change would be to try to route the power wires so that they don't run parallel to the signal wires.
Ok, finally after a long time i did finalize my ncore monoblock.
Was not sure how to connect earth to XLR contact. A picture:
I did connect shield from signalcable from ncore module to pin1 on XLR contact, this is not very visible on picture. Also did connect to same pin (1) an cable to chassi, And finally i did connect the black thin cable to the other fastening scew of XLR contact, not very visible on picture. I was not sure how this is done best and after looking at many pictures of others build i had no clear picture what was best since i did see a lot of different connections. Is my connection of XLR OK you think??
Also an picture of the whole amp:
[/URL][/IMG]
I´m aware that some cables are unnecessary long, but did not want to cut them to short if i hade to make changes.
Have not tried them yet, any checklist beföre powering them up?
Was not sure how to connect earth to XLR contact. A picture:
I did connect shield from signalcable from ncore module to pin1 on XLR contact, this is not very visible on picture. Also did connect to same pin (1) an cable to chassi, And finally i did connect the black thin cable to the other fastening scew of XLR contact, not very visible on picture. I was not sure how this is done best and after looking at many pictures of others build i had no clear picture what was best since i did see a lot of different connections. Is my connection of XLR OK you think??
Also an picture of the whole amp:
I´m aware that some cables are unnecessary long, but did not want to cut them to short if i hade to make changes.
Have not tried them yet, any checklist beföre powering them up?
Last edited:
Only things I can think of is to make the shield from the signal cable go to the chassis screw instead of pin 1, and make the pin1-to-chassis cable even shorter, but those are really minor things - I think your system will be totally OK.
Do you have 2 wires per speaker outlet pin? I might have tried to keep the positive and negative twisted together slightly further along, and tried to avoid the loop in the speaker wires close to the amp circuits, but again, I don't think it will be an issue.
I tested the power supplies without amps (feeding a couple of power resistors) just to be sure - if you do that, make sure you allow lots of time for the caps to discharge before connecting the amps. I also tried with a cheap car loudspeaker first, before connecting an expensive speaker.
Thanks for advice, as you wrote belov i agree i shoud have done as you say. Mabye i correct to that wiring after i powered up and tested them which i haven´done yet. I thought that my wiring would be slighly the same since screen and pin1 cable would share contact anyway.
About the rest of the cables, speaker wire and also signalcable i will be shorten down when i tested and see if i have to do any changes.
I'm about to build my passive two-way Abbey speakers in to active using a miinDSP. My inital thought was to use UcD modules because this is primarily a surround setup and due to price. Seing used Ncore modules being sold, I have wondered however if I should use Ncore for the tweeter and UcD400HG for the midrange/bass woofer. The tweeter (B&W DE-250) is crossed at 1kHz.
Any reasson why this shouldn't work well? Using Ncore for both drivers isn't an option, at least not in the beginning. Too pricey, especially since we're also talking about a center speaker. My surround speakers will remain passive and driven by UcD180HG.
Any reasson why this shouldn't work well? Using Ncore for both drivers isn't an option, at least not in the beginning. Too pricey, especially since we're also talking about a center speaker. My surround speakers will remain passive and driven by UcD180HG.
Why not use a PSC2.400d or a AS2.100d? DSP and UcD amps in a nice plate amp design. I used the PSC2.400d myself and are very happy with its performance.
I wonder why you're thinking of using a 400W amp for a tweeter that will withstand about 6W max!
Works fine, just don't crank it up to much (I use ribbon tweeters that can handle about 20W with the PSC2.400d). The total plate amp can deliver about 400W. And there is always the AS2.100d.
Just my 2c!
Just my 2c!
Plate amp isn't an option for several reasons. My question was about combining Ncore and UcD.
Ouroboros:
I haven't seen an Ncore amp with less watt. Have you?
Ouroboros:
I haven't seen an Ncore amp with less watt. Have you?
Fair enough, miniDSP it is😉 IMHO there should be no problem combining the 2. But take a good look at the power supply (I assume you will use 1 PS for both amps) you will use, SMPS400, SMPS600, ...
- Status
- Not open for further replies.