15-May-2015, 11:41
(15-May-2015, 11:35)f1eng Wrote:(15-May-2015, 09:41)iamwappie Wrote:(14-May-2015, 16:16)Vivialet Wrote:(14-May-2015, 16:08)iamwappie Wrote: Looking at the config file the number of SAM entries has been expanded from 64 to 128 with the new configurator. Values are repeating 0-64 vs 65 - 128. Seems the upper region is for the right speaker and first region for the left one.
That is interesting and new over the previous SAM version. Why would you need a SAM profile for the left and right speaker to be identical unless this is the pre-requirement for future room corrections maybe?
I don't think it is for left and right speaker as the values are different for both value sets. I think it is for bass (SAM V1) and for a new additional correction of the upper frequencies.
Otherwise my left and right speaker would now sound totally different...what they do not of course.
I tend to not agree. See below the SAM values. Assumption I do is that left column is left speaker, right column is right speaker. Why? Prior to the SAM fix only the left column was in the config file. After the fix the right column was added (actually it is in one list but for convenience and comparison reasons now in columns) as a result we also had sound in the right speaker. This was the only change they made so good reason for assuming.
SAM values, although with an offset are identical for left and right. Why have a separate SAM profiles for left and right speaker? In individual measurements this may correct small deviations in left and right speaker but these are generic profiles for a specific speaker type. From a room correction perspective this would definitely make a lot of sense so this could be a first step towards it.
For SAM v1 the profile is also still included in the config file logically for 'legacy' support. The old SAM only uses 64 values (for both speakers I'd say).
"SAM1" :2,
"SAM2" :4,
"SAM3" :7.58963, "SAM64":7.58963,
"SAM4" :2.75, "SAM65":2.75,
"SAM5" :2.52525, "SAM66":2.52525,
"SAM6" :2.659, "SAM67":2.659,
"SAM7" :5.33333, "SAM68":5.33333,
"SAM8" :0.22, "SAM69":0.22,
"SAM9" :15, "SAM70":15,
"SAM10":0.6, "SAM71":0.6,
"SAM11":0.055, "SAM72":0.055,
"SAM12":20, "SAM73":20,
"SAM13":4.3, "SAM74":4.3,
"SAM14":9.4, "SAM75":9.4,
"SAM15":0.03993, "SAM76":0.03993,
"SAM16":0.4992006409, "SAM77":0.4992006409,
"SAM17":0.9983282527, "SAM78":0.9983282527,
"SAM18":-0.9999293982, "SAM79":-0.9999293982,
"SAM19":0.4999298801, "SAM80":0.4999298801,
"SAM20":-0.9966676287, "SAM81":-0.9966676287,
"SAM21":0.0039764758, "SAM82":0.0039764758,
"SAM22":0.0161988371, "SAM83":0.0161988371,
"SAM23":0.0189355993, "SAM84":0.0189355993,
"SAM24":0.0133874687, "SAM85":0.0133874687,
"SAM25":0, "SAM86":0,
"SAM26":0.0129197998, "SAM87":0.0129197998,
"SAM27":0.0256345234, "SAM88":0.0256345234,
"SAM28":0.0129197998, "SAM89":0.0129197998,
"SAM29":0.5009059799, "SAM90":0.5009059799,
"SAM30":0.9986116008, "SAM91":0.9986116008,
"SAM31":-0.996785664, "SAM92":-0.996785664,
"SAM32":0.4968271166, "SAM93":0.4968271166,
"SAM33":-0.9972270517, "SAM94":-0.9972270517,
"SAM34":0.4997652185, "SAM95":0.4997652185,
"SAM35":0.4995304371, "SAM96":0.4995304371,
"SAM36":-0.5, "SAM97":-0.5,
"SAM37":0, "SAM98":0,
"SAM38":0, "SAM99":0,
"SAM39":1, "SAM100":1,
"SAM40":0, "SAM101":0,
"SAM41":0, "SAM102":0,
"SAM42":0, "SAM103":0,
"SAM43":0, "SAM104":0,
"SAM44":0.0155824168, "SAM105":0.0155824168,
"SAM45":1.46339e-5, "SAM106":1.46339e-5,
"SAM46":-1.993571328, "SAM107":-1.993571328,
"SAM47":-0.0155677829, "SAM108":-0.0155677829,
"SAM48":0.9936542332, "SAM109":0.9936542332,
"SAM49":1, "SAM110":1,
"SAM50":0, "SAM111":0,
"SAM51":0, "SAM112":0,
"SAM52":0, "SAM113":0,
"SAM53":0, "SAM114":0,
"SAM54":1, "SAM115":1,
"SAM55":0, "SAM116":0,
"SAM56":0, "SAM117":0,
"SAM57":0, "SAM118":0,
"SAM58":0, "SAM119":0,
"SAM59":0, "SAM120":0,
"SAM60":0, "SAM121":0,
"SAM61":0, "SAM122":0,
"SAM62":0, "SAM123":0,
"SAM63":0, "SAM124":0,
"SAM125":0,
"SAM126":0,
"SAM127":0,
"SAM128":0
My guess is that adding a separate lookup table for each speaker may be a preparation for room correction.
That would be great!
D400; Stereolab Tombo Tron coaxial for master -> slave; Kubala-Sosna Elation interconnects, power, and speaker cables; Spendor D7 speakers; Bryston BDP-2 w. latest sound card & upgraded fuses; Bybee Stealth Power Purifier conditioner connected with IsoTek EVO3 Syncro SE to wall socket