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NPD DSM Noisemaker OmniCabSim
- Thread starter Darkglass
- Start date
I bought a OCSDlx in the first batch of the new version with the mono headphones V2 I guess) - bought straight from Daniel, even has my name on it. Serial number 9 outside and 13 on the board. A few months ago I noticed that the 1/4” effect out and the XLR out were out of phase with eachother. @Dsmnoisemaker said the design is intended to be in-phase, and if I needed it different, then flip the wires.
Ok, cool, I can do that.
Today I went to mod the unit to the new spec, and to reduce the XLR out hot level since my interface seemed to be randomly clipping. When I opened the unit, I went straight to the XLR wires. I noticed the numbers of the pins are marked on the XLR jack, the board it is mounted to and the output from the main board. Following the wires, pin 1 was connected to output 3, and pin 3 was connected to output 1.
I thought that would certainly cause me an issue or two, so I only desoldered and reconnected the correct pin with the output on the main board. Well low and behold the phase is correct now. ALSO!! The random clipping is gone entirely. ALSO!! Of all things, a popping issue I have been having on my board that I couldn't source is also completely gone! So, the ground wire was connected to hot and the hot to ground, thus injecting a voltage into my ground.
Well, I'm a super happy camper about this, and thought that everyone should be aware that while using the XLR, if you have bypass switch pops other pedals to check that your pedal is wired correctly.
Still love this pedal, even more now!
Ok, cool, I can do that.
Today I went to mod the unit to the new spec, and to reduce the XLR out hot level since my interface seemed to be randomly clipping. When I opened the unit, I went straight to the XLR wires. I noticed the numbers of the pins are marked on the XLR jack, the board it is mounted to and the output from the main board. Following the wires, pin 1 was connected to output 3, and pin 3 was connected to output 1.
I thought that would certainly cause me an issue or two, so I only desoldered and reconnected the correct pin with the output on the main board. Well low and behold the phase is correct now. ALSO!! The random clipping is gone entirely. ALSO!! Of all things, a popping issue I have been having on my board that I couldn't source is also completely gone! So, the ground wire was connected to hot and the hot to ground, thus injecting a voltage into my ground.
Well, I'm a super happy camper about this, and thought that everyone should be aware that while using the XLR, if you have bypass switch pops other pedals to check that your pedal is wired correctly.
Still love this pedal, even more now!
Dsmnoisemaker
Commercial User
- Jan 2, 2016
- 506
- 1,496
- 49
- Disclosures
- Owner of DSMNOISEMAKER pedals
I'm so sorry about that. I was scratching my head thinking if i messed up the design, but i confirmed it was OK. Must have been a one off mistake since i soldered those by hand, and i test each output independently, so i didn't noticed the phase issue..
I'm happy you were able to fix it.
In the end, it's no big deal! It would be a difficult thing to catch functionally unless you did parallel testing. The only thing that helped me was your good commenting on the boards!
Dsmnoisemaker
Commercial User
- Jan 2, 2016
- 506
- 1,496
- 49
- Disclosures
- Owner of DSMNOISEMAKER pedals
Great!! believe me, when a customer tells me there´s something wrong with any of my products, it´s pretty shocking and scary. It´s so hard to build a reputation, and so easy to loose it. The good thing is that it has happened only 3 or 4 times, and i would say that each time the result is a closer connection with the user.
How do you do that? Is there a mod to lower the DI output? Inquiring minds...
Dsmnoisemaker
Commercial User
- Jan 2, 2016
- 506
- 1,496
- 49
- Disclosures
- Owner of DSMNOISEMAKER pedals
If you have the V2 (mono headphone, no battery clip).... to reduce the xlr output level -6dB, remove R29
It´s an smd resistor and it should be near the NE5532 IC.. mod at your own risk...
Only the mono versions needed it apparently, I don't mind the output as it is stock.
Thanks! I have one with a battery clip but it doesn't say "Stereo" on the faceplate above the 1/8" output jack. Mono early v2?
And @Dsmnoisemaker, would I have to take the board out and flip it over? Just snip the resistor out?
Dsmnoisemaker
Commercial User
- Jan 2, 2016
- 506
- 1,496
- 49
- Disclosures
- Owner of DSMNOISEMAKER pedals
Yes, the stereo does not say Stereo on the faceplate..the mono says "(mono)"
so, you have V3.. do not modify, it´s already lowered -6dB in respect with the previous version.
AHHHH! And that's why I was wondering why you guys needed more high end/treble extension with the High Response knob. I was like, "Man! This thing has more than enough high end! Why would anybody want more??" I thought I had a v2 but I must have a v3.
I ran the OCS today at church with the High Response at about 7:30-ish. PLENTY of high end going on.
I ran the OCS today at church with the High Response at about 7:30-ish. PLENTY of high end going on.
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Too late!
Just kidding!
I don't think I'd attempt it anyway. The DI output still clips my el cheapo practice space board. But I'll just use the 1/4" output into a XLR adaptor. No biggie. Most boards will have the capability to handle the DI signal.And I was thinking the mono versions didn't say anything and that the Stereo versions said "Stereo".
Soooo...I guess I have the latest and greatest version, with the lowered DI output, stereo headphone out, battery clip and the extended High Response? Nice!!
I’m sure I have the latest but there is some high end “hiss” so I don’t know if I have something set wrong or what. It’s not bad, kind of like when your usin a higher gain drive or something. I may try running the OCS thru my JDI like an effect instead of a DI next week and see what happens.
Dsmnoisemaker
Commercial User
- Jan 2, 2016
- 506
- 1,496
- 49
- Disclosures
- Owner of DSMNOISEMAKER pedals
To minimize hiss ( as an active device, it will always introduce some hiss), try using a non switching, regulated power supply. Also you can try using a greater signal into it and reducing the gain. I have tried it with batteries and it is quite noiseless, but with a switching supply it has some hsssss.
The very small amount that is present has never changed for me, regardless of the issue I had. ...and it's a very small amount, like hardly there. If you have other hiss it will amplify it too, as it should :v)
Dsmnoisemaker
Commercial User
- Jan 2, 2016
- 506
- 1,496
- 49
- Disclosures
- Owner of DSMNOISEMAKER pedals
Btw, updates about preoders!
I've Just recieved the pcb's, and they look and sound great!
I will be assembling and testing all week, and will start shipping next week.
So..this will be the last week of preorders!
Cheers!!
I've Just recieved the pcb's, and they look and sound great!
I will be assembling and testing all week, and will start shipping next week.
So..this will be the last week of preorders!
Cheers!!
Anybody use the headphone amp as an IEM amp on gigs?
I figger DI out to the FOH then monitor send into the Aux In on the OCSD. I control my IEM level/mix from a iPhone app.
Makes sense, no? It would replace a Rolls headphone amp.
I figger DI out to the FOH then monitor send into the Aux In on the OCSD. I control my IEM level/mix from a iPhone app.
Makes sense, no? It would replace a Rolls headphone amp.
I suppose it could. I currently use a Rolls for my IEM's but I guess your description would work as well. Need a special cable with the 1/8" mini for the Mon Send but it seems like it would make sense. Not sure how strong the headphone amp on the OCSD is but you don't need a lot with IEM's. That would really bring my pedal board down. TU-2 and OCSD.
