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xrvsmr [2024/06/17 12:48] – wadminxrvsmr [2025/03/03 20:26] (current) – [Going Onwards] wadmin
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-===== XR18 vs MR18 =====+====== WR18 vs MR18 vs Behringer Wing ====== 
 + 
 +This page aims at providing the procedure, raw measurement datasets and results gathered to prepare the following comparison video:  
 + 
 +{{youtube>NYbtzWdxxuo}} 
 + 
 +https://www.youtube.com/watch?v=NYbtzWdxxuo
  
-{{drawio>xrmr:main.png}} 
  
 ==== Introduction ==== ==== Introduction ====
  
-This document proposes a test procedure and results comparing Behringer XR18 and Midas MR18 performance.+This document proposes for this purpose 
 +  * a test procedure  
 +  * RAW measurements  
 +  * Test results comparing Behringer XR18, Midas MR18 and Behringer WING performance 
 +  * An XR18 filter configuration to compensate its frequency response
  
 ==== Disclaimers and Claims ==== ==== Disclaimers and Claims ====
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     * As a consequence, these results are (1) immune to critical failures on one channel but are (2) prone to specimen bias.     * As a consequence, these results are (1) immune to critical failures on one channel but are (2) prone to specimen bias.
   * **Statement #3** : XR18 has two high impedance instrument inputs which MR18 does not have. For the sake of comparing apples with apples, Input 9/10 and Output 1/2 are used as references on both units.   * **Statement #3** : XR18 has two high impedance instrument inputs which MR18 does not have. For the sake of comparing apples with apples, Input 9/10 and Output 1/2 are used as references on both units.
 +  * **Statement #4** : There is a 10 year gap between XR/MR design and WING design. Consequently, the analog part is significantly less noise-sensitive on WING which directly derives from the technology gap.
 +    * As a consequence, comparison will focus on analog comparison ONLY, and will not take into account the difference in digital signal processing that units are capable of. The technological gap in this field is even greater (processing bit depth, algorithm quality, etc...).
  
-Measurement Gear+==== Measurement Gear ====
   * UUTs   * UUTs
-    * MR18 S211000533C8H +    * MR18 S211000533C8H Firwmare 1.22 
-    * XR18 **XXXXXXXXXXXX**+    * XR18 S201004255BI8 Firwmare 1.22 
 +    * WING 010063R0604AAE Firwmare 3.0.5
   * Tools   * Tools
     * Gen2 Apollo Twin USB     * Gen2 Apollo Twin USB
     * XLR Wires / Jack Adapters     * XLR Wires / Jack Adapters
-    * Room EQ Wizard Rev xxx for measurement+    * Room EQ Wizard Rev 5.3 for measurement
  
 ------------- -------------
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 ===== Test Procedure ===== ===== Test Procedure =====
  
-==== T1 - Inner Noise ====+==== T1 - Inner Noise and THD ====
  
 Measure loopback  RTA THD (+N) @1khz + total dynamic range. Measure loopback  RTA THD (+N) @1khz + total dynamic range.
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 === *R18 Measurement === === *R18 Measurement ===
  
-== -12dBfs / G=0 ==+== -20dBfs / G=0 ==
   * Set Inputs Gain to 0dB   * Set Inputs Gain to 0dB
-  * Set Output level to match a -12dBfs input level+  * Set Output level to match a -20dBfs input level
   * Measure RTA and store   * Measure RTA and store
 +
 +=== Wing Measurement ===
  
 == -20dBfs / G=0 == == -20dBfs / G=0 ==
   * Set Inputs Gain to 0dB   * Set Inputs Gain to 0dB
   * Set Output level to match a -20dBfs input level   * Set Output level to match a -20dBfs input level
-  * Measure RTA and store 
- 
-== -12dBfs / G=8dB == 
-  * Set Inputs Gain to 8dB 
-  * Set Output level to match a -12dBfs input level 
-  * Measure RTA and store 
- 
-== -12dBfs / G=18dB == 
-  * Set Inputs Gain to 18dB 
-  * Set Output level to match a -12dBfs input level 
-  * Measure RTA and store 
- 
-== -12dBfs / G=28dB == 
-  * Set Inputs Gain to 28dB 
-  * Set Output level to match a -12dBfs input level 
   * Measure RTA and store   * Measure RTA and store
  
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 === *R18 Procedure === === *R18 Procedure ===
  
-== -12dBfs / G=0 ==+== -20dBfs / G=0 ==
   * Set Inputs Gain to 0dB   * Set Inputs Gain to 0dB
-  * Set Output level to match a -12dBfs input level+  * Set Output level to match a -20dBfs input level
   * Measure Transfer function and store   * Measure Transfer function and store
 +
 +== -20dBfs / G=36dB ==
 +  * Set Inputs Gain to 36dB
 +  * Set Output level to match a 20dBfs input level
 +  * Measure Transfer function and store
 +
 +=== WING Procedure ===
  
 == -20dBfs / G=0 == == -20dBfs / G=0 ==
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   * Measure Transfer function and store   * Measure Transfer function and store
  
-== -12dBfs / G=8dB == +== -20dBfs / G=35dB == 
-  * Set Inputs Gain to 8dB +  * Set Inputs Gain to 36dB 
-  * Set Output level to match a -12dBfs input level+  * Set Output level to match a 20dBfs input level
   * Measure Transfer function and store   * Measure Transfer function and store
 +  * (Note : -35dB is constrained by test setup, because of my attenuator being on/off, I could not reach exactly 36dB gain and -20dBfs signal)
  
-== -12dBfs / G=18dB == +===== Test results =====
-  * Set Inputs Gain to 18dB +
-  * Set Output level to match a -12dBfs input level +
-  * Measure Transfer function and store+
  
-== -12dBfs / G=28dB == +You'll find everything I used here.  
-  * Set Inputs Gain to 28dB + 
-  * Set Output level to match a -12dBfs input level + 
-  * Measure Transfer function and store+==== Presentation shared in the video ==== 
 +Open with Libreoffice or Powerpoint 
 +{{ :xmw:xmw_presentation.zip |}} 
 + 
 + 
 +==== dBFS ODS Spreadhseet ==== 
 +Used for normalised dBfs analysis (open with Libreoffice or Excel)  
 +{{ :xmw:xmw_normalised_spreadsheet.zip |}} 
 + 
 +==== RAW Data for you brave nerds ==== 
 +Opens with Room Eq Wizard tool: 
 +{{ :xmw:xmw_rew_dataset.zip |}} 
 + 
 +===== Going Onwards ===== 
 + 
 +Here is an XR18 EQ preset you can load which compensates the poor XR18 frequency response at 36dB Gain.  
 + 
 +Of course, you might need those EQ bands afterwards, it's just a modified starting point for those who want to have the sharpest start when configuring a setup. 
 + 
 +{{ :xmw:xr18_compensation_eq.zip |}}
  
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