Do you mean the screw terminals or the speaker wire terminals?
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Review and Measurements of Hypex NC400 DIY Amp
- Thread starter amirm
- Start date
The guidance is that the output wires should be inserted the same direction into each terminal. In your unit the negative wire is inserted into the negative terminal approaching from the opposite direction as the positiver wire is inserted into the positive terminal. Folks say that this creates a loop that can pick up interference. The cleaner method is to insert the negative terminal wire into the negative terminal approaching from the same direction that the positive wire is inserted into the positive post. Doing that is challenging with these thicker wires. I can't imagine that it will sound any different but it's better cable dressing.
I don't like the lack of electrical insulation from the attached pic, but the rest of the wiring and plugs seem fine (well, the GND from the XLR plug seems very close to the hot pin).
Attachments
Not professional :-(
These leds are part of the voltage regulators circuitry. Not as indicators but certainly as voltage references.
Why on earth should the documentation even mention them?
So red is the correct color?
I understand @Nathan_A misgiving the red as some type of warning indicator.
Yea, why nothing in the documentation on them?
Ask HypexSo red is the correct color?
I understand @Nathan_A misgiving the red as some type of warning indicator.
Yea, why nothing in the documentation on them?
These red LEDs are installed on all Hypex low noise voltage regulators. I personally always considered them as an indication of "looks like there is juice inside"
Yea, why nothing in the documentation on them?
I do remember reading about them being a voltage dropper in some document from Hypex.
Red LEDs have lower noise than other colours and they are used as a voltage reference (commonly), so the noise is an important consideration. There is no aesthetic decision around red LEDs, it is purely technical.So red is the correct color?
I understand @Nathan_A misgiving the red as some type of warning indicator.
Yea, why nothing in the documentation on them?
It always strikes me when I look at these units that it is a shame they're such a sea of cabling inside; almost understandable with the NC400. but that even goes for the likes of product made professionally using this or other OEM units from Hypex. So little effort put into the system engineering.
While I recognize that some of the modules request some effort for a clean integration, some don't. NC500 is extremely flexible in example.
If you don't know the requirements, you can't judge the quality of the system engineering.
If you don't know the requirements, you can't judge the quality of the system engineering.
Not sure you can blame Hypex for the integrators making a mess of how they install the modules. The modules themselves have a pretty tidy layout.
Sure, wasn't putting it at Hypex's door at all! Just an observation on the state of the market of these and I guess what happens when the bar is low to entry...!
Even on the NC500 units there are some pretty lazy implementations out there, basically NC500+small change to the OEM eval board; and inspite of the modules being able to solve much, still a mass of wires. Of course there are some very good as well.
I will soon publish some nudies of my NCxxxMP based amplifiers, I will be glad to hear your opinion.
Not sure my opinion / prejudice is worth that much, but anyway
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Indeed. Seems these days pretty much anyone with a shed, garage or extra guest room can get the modules, put them in a box, and call themselves a "designer" or "manufacturer"
Worth much more than the one from thousands of people who have no issues with the spaghetti plates they are presented...Not sure my opinion / prejudice is worth that much, but anyway
This is true, but in the other way, if one want to dip toes in the audio business while controling the risks, they are a blessing. The guy in the shed will build power amplifiers only, addressing a dying and very limited part of the marketIndeed. Seems these days pretty much anyone with a shed, garage or extra guest room can get the modules, put them in a box, and call themselves a "designer" or "manufacturer"
Yep. I've had those wires installed both ways and I can't hear a difference. I don't have equipment to measure a difference if it does exist. The wiring diagram that came with the DIY kit shows these connecting from opposite directions so builders choice. That wiring diagram may have been drawn that way to emphasize which wire goes to which screw-down terminal. I get a bit neurotic on these things and had to try both ways.Folks such as Bruno Putzeys.
The difference would probably be high-frequency (low-level) noise.
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