What if you opened up a Manley Reference C and ...
- Thread starter xeawr
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Mauritius89
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Here are some pictures. The only little disappoints are the plastic screw nuts holding the rubber bands. But they can changed by that one so it looks even closer to the manley mics:
Knurled nut (M3):
https://www.ebay.de/itm/303353950703?var=602475908767
Hexagon socket pan-head screws (M3):
https://www.ebay.de/itm/304701789450?var=603732818237
Silikon O-ring (red,18x3,5mm):
https://www.ebay.de/itm/304651607303?var=603684590152
Knurled nut (M3):
https://www.ebay.de/itm/303353950703?var=602475908767
Hexagon socket pan-head screws (M3):
https://www.ebay.de/itm/304701789450?var=603732818237
Silikon O-ring (red,18x3,5mm):
https://www.ebay.de/itm/304651607303?var=603684590152
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Hi! I know I am a bit Late with this, but maybe someone still will find this helpful . I Followed all the components as best as I could I believe it should be bang on. but possibly missed something out .anyway I also printed some prototype pcb s and made 2 clones for stereo use . used capsules from st 51 and I like the results . as well as made power supply for it . very fun project . important note all voltage measurements are done on original microphone with 12at7 tube and not with 12ax7. there is 50 volt difference on 6th pin with 12ax7 . sorry for confusion . also I couldn't fit 3uf capacitor in my design because there is less space in Ali express mic body .
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@qspart
In the meanwhile i went through one and lifted off the schematic. I'll try to compare your to mine, see if something is off. Have you checked the transformer ratios? Where did you get those anyway?
https://groupdiy.com/threads/manley-reference-cardioid-schematic-and-some-analysis.84774/
In the meanwhile i went through one and lifted off the schematic. I'll try to compare your to mine, see if something is off. Have you checked the transformer ratios? Where did you get those anyway?
https://groupdiy.com/threads/manley-reference-cardioid-schematic-and-some-analysis.84774/
Now i found the original hand drawn schematic i made, i actually measured 165v at anode, and 278v before anode resistor on the original. Could it be there's something wrong with the original? Your clone seems to measure right! Could it be 12at7? Mine had 12ax7!
yours seems a bit higher. I think original one is fine, I just changed tube from 12at7 to 12ax7 and it measures exactly same as my clone 147 volts
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No I didn't check ratios, also I don't know how to check that , do you measure resistance for primary and secondary ? also is it possible to dm on this forum?
That seems right.
I measured the transformer by injecting ac voltage at one end and then measured on the other. I believe i did it right, but wasn't sure as i didn't remove the transformer from the circuit. You have nothing to worry about as you have the real deal. I just wanted to double-check. I'm not sure about the wiring in my schematic for the same reason. Nice to have your version in case i ever get to build the circuit. Thanks a million!!!
It is possible to dm, but as you are a new member you need to make more posts before you can dm.
Would be fun to try out c800g k67 capsule on this microphone to make it even more Sony like . is there any info on anyone trying to make k67 tuned like Sony ? So far I haven't seen anything close to it . also have you ever tested c80? and do you think it would be possible to use c80 capsule in ref c?
It probably would be possible to use that capsule, but it's edge terminated, very different to Manley or c800. Soliloqueen has been trying to get one c800 capsule for reverse engineering in order to make a clone, no updates so far
Do you know if capsule in c48 is the same as in c800g ? heard some rumours but wanted to check if it's true.
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