Beesneez BV-08L wiring

[doqmemory]

Anyone know the wiring diagram for BeesNeez BV-08L ?

 

[Khron]

Measuring the winding resistances should at least give a clue?

 

[mhelin]

Btw. BV08 primaries and secondaries are usually connected in series on both sides (not with each other) or secodaries in parallel in some cases but isn't it possible also to connect the primaries in parallel? That would make the transformer into about 3:1 one, is that ok, what would happen to the primary inductance (number of turns remains the same)?

 

[doqmemory]

Btw. BV08 primaries and secondaries are usually connected in series on both sides (not with each other) or secodaries in parallel in some cases but isn't it possible also to connect the primaries in parallel? That would make the transformer into about 3:1 one, is that ok, what would happen to the primary inductance (number of turns remains the same)?

I am building a Phaedrus SPIRIT phantom-powered U47-style mic with this transformer.

My guess is that red and black are p+ and p-, resp., with blue and pink yellows together to tie the two primaries in series, with the yellows pink and blue as s+ and s- and the greys white ties together. I also need to center tap the secondaries (grey wires according to my guess) for phantom power.

(Edited with correct colors)

Measuring the winding resistances should at least give a clue?

I was hoping that someone already had the diagram. I contacted BeesNeez about it last week, but still have no reply. I have failed to find any information on the BeesNeez website, GroupDIY, or Google. My next step is to measure continuity and resistance to validate my hypothesis, as @Khron suggested, but knowing the actual wiring would make me more confident.

 

[Khron]

Each half of the primary should / will have a notably higher resistance than each half of the secondary.

Regarding the phasing, even if you happen to connect the primaries and/or secondaries "in the wrong direction", you won't damage anything, you just won't get any audio signal, and you'll be at worst two reconnections away from getting it right.

This would've been a 10-15min job if you reeeeeeeally took your time. But hey, if waiting for days to get information you may or may not receive is how you get your kicks...

 

[innercityman]

Anyone know the wiring diagram for BeesNeez BV-08L ?

I made an U47 with this transformer. Grey and Yellow are connected together. I used Moby's diagram as a reference. Here's a pic of my build. And check Moby's page...

https://www.mobytransformers.com/_files/ugd/692932_25ea5f4fa2a440f3aad6ccb6bcf96389.pdf

 

[doqmemory]

I used Moby's diagram as a reference.

Thanks, I was also using Moby's Bv-08 as reference, since I used it with my D-EF47.

It seems like such an obvious thing to have schematics. I am building it like the AMI U47, with the resistors on two little boards surrounding the transformer, so I want the wiring correct the first time.

 

[innercityman]

Thanks, I was also using Moby's Bv-08 as reference, since I used it with my D-EF47.

It seems like such an obvious thing to have schematics. I am building it like the AMI U47, with the resistors on two little boards surrounding the transformer, so I want the wiring correct the first time.

Don't expect to get any answer from Beesneez. I wrote them few times without any answer.

 

[doqmemory]

By measuring resistance, I found the following (corrected in the earlier post):

Primary +	red
Primary -	black
Secondary +	pink
Secondary -	blue
Primary spools	yellows tied together
Secondary spools	whites tied together and center tapped

 

[lightningbefore]

Dang I'm wondering the same about the Beesneez 13:1 and 6.5:1 toroidals as well (and what mics a 6.5:1 is even used in, anyway).

 

[doqmemory]

what mics a 6.5:1 is even used in, anyway).

U47