My Luxman Integrated has AC Inlet Envy

I bought a cheap replacement inlet and it just feels so much better. Meaning, I can feel the plug grip the pins much earlier, and they all grip much better.

Yes, change the IEC C-14 is the best option!👍

I found some photos online the Luxman use 3 prongs inlet, is your 507ux utilizes quick connect (no soldering required) C-14?

Boulder does it right no standard IEC.

Another good AC connector is Neutrik powerCON, too bad no home HiFi use it.

I buy all locking AC power cords.

@ditusa +1

@erik_squires, have you try it?

https://www.youtube.com/watch?v=eUHOjCzW2mQ&t=5s

Replace the inlet is the only solution. Use a 3 prongs and leave the ground pin unconnected.

I could use superglue if I wanted, doesn’t make the metal to metal contact any better.

@erik_squires

The IEC LOCK+ is utilize a metal plate at an angle to clamp the ground pin. However, you may not need it if the replacement inlet is good enough.

Anyone else have issues with Luxman inlets??

BTW, the Luxman 507 photo that I posted earlier could be an aftermarket IEC socket.

I hope my responses make sense.😉

I bought a cheap replacement inlet but it’s not yet in the Luxman. I just bought it to test fit my cables and it seems to do a lot better than what’s in the Luxman both electrically and mechanically.

Seems like replace the inlet in your Luxman is the solution. No?

It seems many who reply are missing the part about SHORT CONTACT DISTANCE.

The inlet on your L-507UX is a C18 (2 prongs), the pin height should be 12mm. A C14 inlet is 3 prongs, the two pins height are 12mm and the ground pin is 15mm.

Have you measure it?

Great! @erik_squires 👍

Please let us know your progress. BTW, since you going to open the chassis of your Luxman, Would you do us a big favor to check the power transformer primary winding if there multi tap or not, so we can be sure the possibility of voltage conversion.

TIA

I have a chance I can do everything through the outlet hole.

If possible, try turn the original C18 inlet 180° before you replace it, perhaps that can help the aftermarket plug stay in better since the two pins are on upper side.

Hopefully you don’t need to replace the inlet after all 😌

IME, install the IEC inlet 2 pins on upper side is better even if it is a C14 inlet.

Ground goes on top. 😀

Unlike AC Receptacles, IEC 60320 inlets can install in any orientation, some Marantz and Denon even put it sideways.😀

These are not convertible transformers.

Thank you for your confirmation!

Tomorrow I replace it.

Good luck and please keep us updated with your progress!

Sadly the cord used from the power board to the inlet, about 8" long is 20 gauge. Kind of disappointing honestly, but probably exactly to spec. The choice of a Molex Spox connector I believe limits the maximum gauge to 18 anyway, so assuming I did have a Molex crimper ($700 or so for the manual versions) I still couldn’t improve much here.

If the power transformer primary winding wire is thinner than 20 gauge, I don’t see there will be any improvement using thicker wire.

The big deal however is that the assembly leaves the wrong side of the AC inlet fused.

I won’t say Luxman is wrong since it is a double insulated Class II equipment.

However, if your power cord is polarized, swap the wire let it fused on Live side. No harm to make it even safer.

The transformer may be 20 gauge but the fuse is 15A.

Interesting, 15A fuse for a 110Wx2 amplifier! No soft start circuit?