|
|
Post by hadaja on Oct 4, 2023 3:14:25 GMT -6
I thought i would do an experiment with comparing my Upton with the OPR 251.
I ran some pink noise through the both of the mics at the same time to look at the frequency analyser curves.
I was surprised how similar they were. Like nearly the same.
The OPR had a little more reach at the top end and the Upton has some dips/ scoops through out the mids and low mids compared to the OPR.
Its amazing how different capsule makers design there capsules. And create a small difference in the way we perceive there sound against another mic variant.
|
|
|
|
Post by Ward on Oct 4, 2023 5:52:12 GMT -6
I thought i would do an experiment with comparing my Upton with the OPR 251. I ran some pink noise through the both of the mics at the same time to look at the frequency analyser curves. I was surprised how similar they were. Like nearly the same. The OPR had a little more reach at the top end and the Upton has some dips/ scoops through out the mids and low mids compared to the OPR. Its amazing how different capsule makers design there capsules. And create a small difference in the way we perceive there sound against another mic variant. Post some screen shots please! I'm very curious. Also, any other measurements taken for THD, IMD etc? |
|
|
|
Post by hadaja on Oct 4, 2023 19:34:09 GMT -6
Here you go Ward. Not 100% sure what interpretations you can take from these. Actual Sound wise there is some very minor differences. Attachments:
|
|
|
|
Post by hadaja on Oct 28, 2023 1:11:22 GMT -6
SO the OPR 251 mic came back as I got Mark to make some minor adjustments and now it sounds very very close to my Upton.
I am so very impressed.
Thanks Mark.
|
|
|
|
Post by christopher on Oct 28, 2023 2:30:08 GMT -6
Welcome, send one to Johnkenn to demo !  ^^^ I knew of these for a while. I’d love to see them put through their paces. |
|
|
|
Post by hadaja on Oct 28, 2023 4:47:18 GMT -6
Well Mark is putting out a Cardioid only 251 FET version with his Custom 251 chambered CK12 capsule.
I couldnt help it, i placed my order for one.
|
|
|
|
Post by probably on Oct 28, 2023 6:57:28 GMT -6
I originally wanted the upton variant due to the swivel mount and the upton grill (uptown girl)
but I got marks model for less than a third with two modes due to the presale and the free mod at the time (so no upton grill remix will be made today Maybe one day)
When I was looking for a 67 google always seemed to think Marks fet 47 was what I was looking for (soon that day will come)
Like I said before It will work well enough for anything and everything I need it for, It really killed getting the big brand names for me.
|
|
|
|
Post by probably on Dec 6, 2023 19:51:48 GMT -6
update Attachments:
|
|
ericn
Temp
Balance Engineer
Posts: 16,098 
Member is Online
|
Post by ericn on Dec 6, 2023 20:20:37 GMT -6
To quote an old commercial “ and TWINS” |
|
|
|
Post by probably on Dec 6, 2023 20:53:34 GMT -6
To quote an old commercial “ and TWINS” Have not seen it |
|
|
|
Post by probably on Dec 15, 2023 23:48:34 GMT -6
SO the OPR 251 mic came back as I got Mark to make some minor adjustments and now it sounds very very close to my Upton. I am so very impressed. Thanks Mark. was this the transistor or the Ultralux? |
|
|
|
Post by hadaja on Dec 16, 2023 0:15:23 GMT -6
SO the OPR 251 mic came back as I got Mark to make some minor adjustments and now it sounds very very close to my Upton. I am so very impressed. Thanks Mark. was this the transistor or the Ultralux? Ultralux |
|
|
|
Post by keymod on Dec 16, 2023 10:53:06 GMT -6
We used our Ultralux, set on vintage, on a Taylor 12 string during a session yesterday. Beautiful results.
|
|
|
|
Post by Ward on Dec 16, 2023 20:02:48 GMT -6
Here you go Ward. Not 100% sure what interpretations you can take from these. Actual Sound wise there is some very minor differences. The difference is clear! |
|
|
|
Post by probably on Dec 16, 2023 22:23:21 GMT -6
Here you go Ward. Not 100% sure what interpretations you can take from these. Actual Sound wise there is some very minor differences. The difference is clear! care to elaborate? |
|
|
|
Post by probably on Dec 17, 2023 10:47:12 GMT -6
Alright well I'm still happy with both I purchased.
|
|
|
|
Post by opr on Dec 17, 2023 17:35:05 GMT -6
The differences in the frequency response curves are not minute. Overlay the Upton on top of the OPR. There's a lot more capture in the OPR, especially in the high end range. View Attachment Ward there are a few issues with the graphs you've presented here see above...Firstly when looking at charts like this we generally align the responses 0 db 1k or the average of the mid-range which you've neglected to do, not only that you've exaggerated the differences by dropping the Upton curve by a db or so, at the very minimum. I do hope this wasn't intentional
I'm currently erring on the "don't put down to malice what you can explain with incompetence "school of thought. See the attached images that show your errors and more accurate representations of the differences between the graphs. Please note that the original measurements shown were by no means carried out in a scientific manner so should be taken with a grain of salt. Also the mic in question did have a rise slightly beyond my baseline which has been now been corrected for.
Ward your response is not aligned to 0.db 1K or the average of the mid-range.
Not only that, if you were going by the grid you've also miss-aligned it by a db or more!
Below I matched to 0db at 1K the bright red is the Upton curve. there's about a 1-1.5db average difference in FR you'd be lucky to find two Ck12 in the wild matched that closely let alone two mics coming from two different manufacturers.
Also I can custom tune my Ck12 capsules to meet customer preference. Original AKG Ck12 Capsules can vary significantly from bright to dark I tune mine in the middle of the spectrum out of the gate but am happy to custom tune. Properly aligned at 1K we see minor differences the kind you would see from one Ck12 equipped microphone to another that weren't a sold matched pair.
Happy Monday.
To all of received their mics and have posted here I'm glad to hear that you're all enjoying you mics! Thanks for coming in an sharing your positive feedback!
|
|
|
|
Post by opr on Dec 17, 2023 18:03:03 GMT -6
[/div][/quote] I used hadaja 's graphics and aligned them. [/quote][/div]
Even if that were the case your grid alignment is way off. As mentioned before, for accurate results we generally align the responses to 0 db at 1k or the average of the mid-range
See below image taken from your match up.
|
|
|
|
Post by opr on Dec 17, 2023 20:33:19 GMT -6
[/div][/quote] Ward said. I used hadaja 's graphics and aligned them. [/quote][/div] Even if that were the case your grid alignment is off. for accurate results we generally align the responses to 0 db at 1k or the average of the mid-range
See below image taken from your match up.
[/quote] Ward said.
I fail to see what kind of paint you are trying to make. I made simple observations based on Hadaja;s findings. It's like you're taking me to task here for someone else's work. Poor form. [/quote][/div][/div]
O.P.R said
It's not Hajas work, it's your work as you assembled the graphs (incorrectly) to make a point. The issue is your observations are flawed because your method was poor, thereby miss representing the differences on a public forum of all places. I feel that it's poor form on your behalf...
You took the time to wrangle the files together in an image editor but didn't take the time to match the curves in a meaningful way( as exposed in my previous posts.)
Anyhow as I implied earlier if you made an error all good no hard feelings, I just wanted to clarify to avoid any misconceptions.
peace!
|
|
|
|
Post by hadaja on Dec 18, 2023 4:09:37 GMT -6
Thanks for the people that tagged me in this latest conversation.
this was the first time I had ever done a comparison graph, analyser thingy before, so there could be some user error on my behalf there.
Cant remember who but one of you guys mentioned that there was more hi end captured then the Upton. And that was true when I was listening to play back.
TIs funny how I liked the Upton sound and when you see it graphed and it being different to another 251 mic like the OPR you start to 2nd guess yourself over what sound you really like.
But I knew i was going to get and keep the extra Transistor Cardioid OPR 251 model stock standard so that extra reach was alwasy going to be there with the second OPR 251.
Getting Mark to slightly mod my main OPR Tube 251 to be closer to the Upton was something I wanted to experiment with. So now all 3 x 251's are quite wonderful.The Upton and the 2 x OPR's will all have a place and a purpose in my uses.
Thanks
|
|
|
|
Post by Ward on Dec 18, 2023 11:28:28 GMT -6
Never again, that's for sure! |
|
|
|
Post by probably on Dec 18, 2023 17:22:14 GMT -6
Never again, that's for sure! So are you going to get one? Haha |
|
|
|
Post by Ward on Dec 18, 2023 17:29:22 GMT -6
Never again, that's for sure! So are you going to get one? Haha I think it's pretty safe to bet 'no' on that one. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Dec 19, 2023 11:03:18 GMT -6
Or you could just buy a modern mic made in a factory with modern qc who will not cheap shit out, not Alctron or some guy in a garage. Neumann and Gefell are still around. They still sound pretty good. Over 100,000 dollars for this OPR 251 clone or over 1000 dollars for a transformerless UM70?
|
|
|
|
Post by opr on Dec 19, 2023 14:00:49 GMT -6
Or you could just buy a modern mic made in a factory with modern qc who will not cheap shit out, not Alctron or some guy in a garage. Neumann and Gefell are still around. They still sound pretty good. Over 100,000 dollars for this OPR 251 clone or over 1000 dollars for a transformerless UM70? There's no Q.C issue and the mic isn't 100k |
|
