will do if i do 
I’ll make a note and save it with the pcb files to remind me to let you know if so. At the moment not feeling thaat much like getting my head around it all but may well do in future
1 Like
TYSM but ya I don’t blame you if you don’t wanna…
I just got started with nearness today and this is the first thing I did. I think I need 2… one for internal routing and one for sending a stereo mix out. Imagine (I’m doing it right now) Morphagene and Erbe Verbe together with one (probably Erbe) just a bit wider than the other…
Brilliant little module!
6 Likes
Really hope to see 2HP one’s for sale 
4 Likes
n-So
277
9 Likes
Has anyone had trouble opening the schematic from the GitHub? I’m getting a line 1 error as if I’m not using a compatible version (on v9). If someone feels like sending me a screenshot/pdf, I’d be grateful 
I recently snagged the 2hp TXn and am working on incorporating it into my workflow. Is everyone attenuating the incoming signal fairly heavily? if I don’t it starts to pop like its being overdriven? I’m beginning to think this might be an issue with the one I have and not all of them as that doesn’t exactly seem like the expected use case.
kbit
281
There should be jumpers on the back of the module to allow for fixed attenuation (-6db if I’m remembering correctly). Do you have those in place and are still getting clipping? Before I set those I was getting a lot of clipping myself but have been pretty good since putting them in place.
3 Likes
same here.
with the jumpers set it works like a charm, though.
2 Likes
bmoren
283
here’s the schematic in a PDF!
nearness.pdf (38.6 KB)
5 Likes
bmoren
284
this is exactly why I made the attenuated version. I found that I was almost always doing some sort of attenuation to better work out the mix before using nearness to build the stereo field. This way I now do everything in one step with a per input attenuator.
here’s the details in case you missed it earlier in the thread:
3 Likes
Has anyone tried building one of these without the op amps, i.e., fully passive? I’d be going direct to my mixer from nearness, so would have all the makeup gain I need there. I have a fun idea that adds some r2rs off of each input, so you can really mix in the stereo space.
1 Like
bmoren
286
Recently with the removal of an output stage, I’m getting a lot of clipping and distortion on the direct nearness into h1 recorder setup (input level @ 1) (using 2 mono cables soldered to a stereo out cable). Anyone have any advice for getting a cleaner recording from this type of output. Posting here since nearness is what I’m recording straight from. Thanks!
I finally got a moment and checked. I don’t have the jumpers which would explain it. I got mine second hand and don’t have the jumpers. Any idea where I can snag a set? Or is this something I should just diy?
Yeah after using it attenuated I can see the reasoning behind that. An attenuated version might just be in my future.
bmoren
289
1 Like
A resistor ladder DAC is kiind of similar… i built my own Nearness-inspired passive module based on this: https://www.olegtron.com/olegtron-r2r-1
https://i.imgur.com/8EZqW1u.jpg
It does mix signals with their volume relating to distance from one end, but it’s not quite the same
5 Likes
An r2r ladder was my inspiration, but basically hanging one off of each node of Nearness so each pan position has a weighted mixer.
1 Like
hi, i thought i just share about my recent build of TXn, just in case anyone wants to build it in the future. after i finished the build, i only have one output, the bottom one, the top output doesn’t produce any sound.
i tried to debug it, and i found there’s an error in the TXn build guide pdf, the position of resistor R22 and R24 is different from the eagle file. i was following the build guide. then i decided to switch the resistor position based on the eagle file and walah, it worked!
also want to say thank you so much @billyhologram and @bpcmusic for making this awesome project!
8 Likes
jmeng
294
Hi,
I am currently getting into DIY and trying to understand what the output stage in Nearness does, exactly.
The way I understand it is an active low pass filter with gain -101/100=-1,01, and
the cutoff starting at 1/(2 pi * 22pF *101kOhm) or roughly 71.6kHz.
So, why do you need a low pass at that frequency? Wouldn’t a plain inverting OpAmp do? And also, why is the gain chosen to be slightly above 1 in magnitude?
Thank you!
3 Likes
