Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #11 of 23 Old 09-15-16, 11:34 PM Thread Starter
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

Quote:
AudiocRaver wrote: View Post
I, for one, am curious what you have come up with. Please share.
+1

Quote:
AudiocRaver wrote: View Post
Only for the first two inputs. Not for inputs 3 and 4 (digital) and not for the outputs.
Ok, mainly looking at the volume output if that gets bumped?

Quote:
AudiocRaver wrote: View Post
Yes, initially. This can be done with a borrowed SPL meter, or with a UMIK-1 or similar calibrated USB mic that has the reference gain in the mic calibration file. Once it has been determined, and the input gain is set as described above, that reference meter or mic is no longer needed for that purpose. So, if there is a way to borrow such a reference, you will only need it for a short time. Some would want to keep a SPL measurement reference around for quick level checks or whatever, and some would be fine without it. That is your call.
How would I go about this?

Quote:
AudiocRaver wrote: View Post
Oops. Yes, you are correct, there is one. I had forgotten that.

The only driver needed is the Windows generic driver. And there is a single calibration file which works for all XTZ Pro mics, not a unique calibration file for each mic manufactured, like most other calibrated mics. The XTZ Pro mics are designed and manufactured (or selected) to work with that calibration file. The calibration file covers the range from 10 Hz to 22 kHz.
So if the calibration covers that range does mean it is calibrated to 10hz to 22khz. I think they say 20hz-20khz?

Thanks again

Last edited by Phillips; 09-15-16 at 11:51 PM.
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post #12 of 23 Old 09-16-16, 04:17 PM
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

See Calibration Procedure Here.
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post #13 of 23 Old 09-17-16, 07:05 PM
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

Quote:
Phillips wrote: View Post
So if the calibration covers that range does mean it is calibrated to 10hz to 22khz. I think they say 20hz-20khz?
Their set site says that measurements cover 16 Hz to 20 kHz.

It also says +/- 1 dB accuracy for the microphone.


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post #14 of 23 Old 09-18-16, 03:30 PM Thread Starter
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

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AudiocRaver wrote: View Post
Their set site says that measurements cover 16 Hz to 20 kHz.

It also says +/- 1 dB accuracy for the microphone.
Hi Wayne thank you

I think the program is calibrated to 16 Hz to 20 kHz (graphs)

The mic calibration covers 10hz to 23 kHz with 0 a long way down. Does tis mean it is (the pro mic) calibrated for this, strange they only say from 20 hz - 20 kHz?

Thanks for your time
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post #15 of 23 Old 09-18-16, 03:32 PM Thread Starter
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

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See Calibration Procedure Here.
Thank you, will look at it

Thanks again
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post #16 of 23 Old 09-19-16, 01:10 AM
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

Quote:
Phillips wrote: View Post
Hi Wayne thank you

I think the program is calibrated to 16 Hz to 20 kHz (graphs)

The mic calibration covers 10hz to 23 kHz with 0 a long way down. Does tis mean it is (the pro mic) calibrated for this, strange they only say from 20 hz - 20 kHz?

Thanks for your time
I do not have the program, not sure what its capabilities are.

Here is the calibration file:

Spoiler

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4078.21 0.00174
4109.75 0.00329
4141.55 0.00557
4173.59 0.00857
4205.87 0.01249
4238.41 0.01746
4271.20 0.02335
4304.24 0.03045
4337.54 0.03889
4371.09 0.04859
4404.91 0.05961
4438.98 0.07223
4473.32 0.08616
4507.93 0.10121
4542.80 0.11754
4577.94 0.13475
4613.36 0.15306
4649.05 0.17341
4685.01 0.19519
4721.26 0.21613
4757.78 0.23652
4794.59 0.25722
4831.68 0.27775
4869.05 0.29821
4906.72 0.32043
4944.68 0.34224
4982.93 0.36501
5021.48 0.38897
5060.32 0.41290
5099.47 0.43820
5138.92 0.46405
5178.67 0.48975
5218.74 0.51686
5259.11 0.54397
5299.79 0.57215
5340.79 0.60083
5382.11 0.62906
5423.74 0.65905
5465.70 0.68870
5507.98 0.71899
5550.59 0.75015
5593.53 0.78129
5636.80 0.81375
5680.41 0.84576
5724.35 0.87828
5768.64 0.91097
5813.26 0.94309
5858.23 0.97536
5903.55 1.00730
5949.22 1.03912
5995.25 1.07181
6041.62 1.10460
6088.36 1.13754
6135.46 1.17075
6182.92 1.20336
6230.76 1.23604
6278.96 1.26874
6327.53 1.30090
6376.48 1.33359
6425.81 1.36576
6475.52 1.39877
6525.61 1.43261
6576.09 1.46639
6626.97 1.50208
6678.23 1.53779
6729.89 1.57408
6781.96 1.61283
6834.42 1.65154
6887.29 1.69278
6940.57 1.73547
6994.26 1.77815
7048.37 1.82499
7102.90 1.87209
7157.85 1.92075
7213.22 1.97183
7269.02 2.02293
7325.25 2.07790
7381.92 2.13362
7439.03 2.18984
7496.57 2.25013
7554.57 2.31018
7613.01 2.37205
7671.90 2.43575
7731.25 2.49839
7791.06 2.56390
7851.33 2.62942
7912.07 2.69442
7973.28 2.76052
8034.96 2.82549
8097.12 2.89101
8159.76 2.95554
8222.88 3.01960
8286.49 3.08183
8350.59 3.14370
8415.19 3.20469
8480.29 3.26467
8545.90 3.32437
8612.01 3.38176
8678.63 3.43867
8745.77 3.49531
8813.42 3.55085
8881.61 3.60689
8950.31 3.66341
9019.55 3.72066
9089.33 3.77742
9159.64 3.83866
9230.50 3.89956
9301.91 3.96294
9373.87 4.03063
9446.38 4.09850
9519.46 4.17228
9593.10 4.24904
9667.31 4.32641
9742.10 4.41131
9817.46 4.49626
9893.41 4.58505
9969.95 4.67725
10047.07 4.76855
10124.80 4.86560
10203.12 4.96208
10282.05 5.06015
10361.59 5.15938
10441.75 5.25825
10522.53 5.35778
10603.93 5.45736
10685.96 5.55663
10768.63 5.65701
10851.93 5.75692
10935.88 5.85671
11020.48 5.95815
11105.74 6.05908
11191.65 6.16139
11278.23 6.26443
11365.48 6.36786
11453.40 6.47292
11542.00 6.57823
11631.29 6.68594
11721.27 6.79407
11811.94 6.90245
11903.32 7.01315
11995.41 7.12326
12088.20 7.23313
12181.71 7.34298
12275.95 7.45221
12370.92 7.55985
12466.62 7.66661
12563.06 7.77220
12660.25 7.87500
12758.19 7.97656
12856.88 8.07548
12956.34 8.17166
13056.57 8.26741
13157.58 8.35698
13259.37 8.44582
13361.94 8.53259
13465.31 8.61386
13569.47 8.69532
13674.45 8.77122
13780.23 8.84476
13886.83 8.91769
13994.26 8.98312
14102.52 9.04873
14211.62 9.10968
14321.56 9.16612
14432.35 9.22206
14544.00 9.26896
14656.51 9.31443
14769.89 9.35690
14884.15 9.39022
14999.29 9.42356
15115.33 9.44815
15232.26 9.46816
15350.10 9.48777
15468.84 9.49354
15588.51 9.49938
15709.10 9.49913
15830.63 9.49044
15953.09 9.48160
16076.50 9.46078
16200.87 9.43692
16326.20 9.40962
16452.50 9.37052
16579.78 9.33031
16708.04 9.28135
16837.29 9.22551
16967.54 9.16778
17098.80 9.09719
17231.08 9.02393
17364.38 8.94452
17498.71 8.85566
17634.08 8.76340
17770.49 8.66219
17907.96 8.55498
18046.50 8.44234
18186.11 8.32230
18326.79 8.19654
18468.57 8.06656
18611.44 7.93052
18755.42 7.78730
18900.51 7.64533
19046.72 7.49571
19194.07 7.34141
19342.55 7.18929
19492.18 7.02793
19642.97 6.86982
19794.93 6.70978
19948.06 6.53947
20102.38 6.38330
20257.89 6.21606
20414.61 6.05005
20572.53 5.88916
20731.68 5.71710
20892.06 5.55914
21053.68 5.39588
21216.55 5.22746
21380.68 5.07215
21546.08 4.90519
21712.76 4.74558
21880.73 4.58612
22050.00 4.41652


Sorry, I did not look close at it before, just glanced at the freq limits. The HF numbers look for real, the LF numbers I wonder about. Zero error at 10 Hz for all the mics they make? Doubtful.

I made backup copies and dated the file when I got it from them, so I am sure I did not modify the file, something I have done experimentally before, but NEVER without great care to then either delete it or document what the changes were, so I am confident it is the way it came from XTZ.

Don't know what to say... They advertise 1 dB accuracy down to 16 Hz, that is probably what I would assume is correct.


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post #17 of 23 Old 09-19-16, 03:18 PM Thread Starter
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

Hi Wayne thanks I wondered about the lower frequencies.

Please can you clarify for XLR mics, I have a Steinberg CI-1 pre-soundcard
• For loopback Input 2 to output 2 TRS > TRS or XLR > TRS
• For SPL calibration Input 2 to output 2 TRS > TRS
• For mic cable should be XLR > XLR

For the loopback should the input level (2 or B can't remember) be the same as the mic input or does it not matter?

With SPL using DVM do I measure the input 2 or the mic (input 1)?

Maybe quicker if you could post a photo of the setup (if you can of course)?

Thanks again

Last edited by Phillips; 09-20-16 at 04:09 PM.
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post #18 of 23 Old 09-21-16, 01:11 AM
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Wayne Myers
 
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

Quote:
Phillips wrote: View Post
Hi Wayne thanks I wondered about the lower frequencies.

Please can you clarify for XLR mics, I have a Steinberg CI-1 pre-soundcard
• For loopback Input 2 to output 2 TRS > TRS or XLR > TRS
• For SPL calibration Input 2 to output 2 TRS > TRS
• For mic cable should be XLR > XLR
timing loopoback: TRS - TRS
SPL calibration: TRS - TRS
mic: XLR - XLR

Quote:
For the loopback should the input level (2 or B can't remember) be the same as the mic input or does it not matter?
It does not matter.

Quote:
With SPL using DVM do I measure the input 2 or the mic (input 1)?
not sure, I'll get back to you


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post #19 of 23 Old 09-21-16, 03:23 PM Thread Starter
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

Quote:
AudiocRaver wrote: View Post
timing loopoback: TRS - TRS
SPL calibration: TRS - TRS
mic: XLR - XLR



It does not matter.



not sure, I'll get back to you

Thanks Wayne that will be very much appreciated.

I am confused with the cabling and measuring with the DVM

Cheers
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post #20 of 23 Old 09-22-16, 03:19 PM Thread Starter
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Re: Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture

Hi Wayne attached is the Steinberg pics

Thanks
Attached Thumbnails
Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture-steinberg_ci1_top_panel-2275df74d10dd84b186f8b6e5ac8cfbc.jpg  

Focusrite Scarlett 2i2 vs Roland UA-55 Quad-Capture-steinberg_ci1_rear-25cf3466b79c4e43af7d03e67213b0ff.jpg  

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