Superlux S502 MK2 test, teardown and improvements
- Thread starter MicUlli
- Start date
Help Support GroupDIY Audio Forum:
In my opinion it is the same.
Reiner
Yes, thanks
Boards arrive next week. I ordered 5 pieces in order to get confident with the design. Test next weekend
Thanks a lot Reiner,
as i can see it looks different for the S502 1st version:
XLR pin 1: black, GND
XLR pin 2: white, +phase L
XLR pin 3: red, -phase L
XLR pin 4: yellow, +phase R
XLR pin 5: blue, -phase R
It is important for correctly soldering the wires for the different versions
Ah, thanks!!Thanks a lot Reiner,
as i can see it looks different for the S502 1st version:
XLR pin 1: black, GND
XLR pin 2: white, +phase L
XLR pin 3: red, -phase L
XLR pin 4: yellow, +phase R
XLR pin 5: blue, -phase R
It is important for correctly soldering the wires for the different versions
Clem777
New member
Thanks, finger crossed
Look also to my post #179
Clem777
New member
Thanks, I had saw this review. I tested all the xlr-5/3 Y cables I have including the pro snake, a Neumann from the RSM191, and cables assembled by trusty local professionals. I guess my MkII is from a bad batch.
I have been using a S502MkII for a while now for recording ambience for film (TV actually). RFI pickup seems to be higher than on other mics indeed.
As part of the tripod mount I use a short "pigtail" cable made from thin star-quad mic cable (see pic). On the mic end of the cable the XLR plug has a wire link between pin 1 and the connector shell. This seems to help a little with RFI.
The real problem seems to be the location of the RF filter caps (those 22n caps to ground). They connect to ground on the PCB which then has about 5cm of wire to the XLR connector which connects pin 1 to the mic housing. Maybe soldering 22n caps directly onto the XLR connector and then shortest wire to mic housing would help. The way they are located now they only prevent oscillator hash leaving the mic, but not so much RFI getting into the mic.
And speaking about wires, I always wondered whether it wouldn't make sense to modify the two wires coming from the mic capsules. There is enough space behind the capsule mount (in the angled part of the main mic body) to put the JFET, ferrite bead and 1G resistor right there and then run three wires into the main mic body.
As part of the tripod mount I use a short "pigtail" cable made from thin star-quad mic cable (see pic). On the mic end of the cable the XLR plug has a wire link between pin 1 and the connector shell. This seems to help a little with RFI.
The real problem seems to be the location of the RF filter caps (those 22n caps to ground). They connect to ground on the PCB which then has about 5cm of wire to the XLR connector which connects pin 1 to the mic housing. Maybe soldering 22n caps directly onto the XLR connector and then shortest wire to mic housing would help. The way they are located now they only prevent oscillator hash leaving the mic, but not so much RFI getting into the mic.
And speaking about wires, I always wondered whether it wouldn't make sense to modify the two wires coming from the mic capsules. There is enough space behind the capsule mount (in the angled part of the main mic body) to put the JFET, ferrite bead and 1G resistor right there and then run three wires into the main mic body.
