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Frequency Response Test Records

her is my Technics SFC-100 test record, 20 HZ LOW FILTER
1774076362210.png



AT OC9MLII WITH AND WITHOUT 20 LOW FILTER
1774077282300.png


oc9MLII no filter both channels
1774077868181.png


I will say this is s very good test record for sweep confirmed by Dynavector Karat.
Only thing I can see wrong is the blipp at14k in right channel,, same for 2 systems so probably record. Will try some local washing..
 
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Wow , it even have the same blip in the right channel above 10k …,no hope to fix that then, it is in the record.

@JP, I guess you did start collecting a loong time a go… I kind of regret not picking up things earlier , but then I realise I had enough other expenses …buying more than a AT95E was kind of crazy..
 
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My father at 91 uses a 1962 Garrard with 16 2/3.. I do not see the point of that speed
 
My father at 91 uses a 1962 Garrard with 16 2/3.. I do not see the point of that speed
You would if you had been blind in the 1950s. That speed was used for Talking Books for the Blind. I recall it was also used for other speech based audio, plays and the like. Talking books were an early use for cassettes, then CDs.

S
 
Got my SFC-TR100 today! Here's two measurements I just took. It's interesting that the blip in the right channel isn't visible on the AT33PTG2.

I am wondering what is going on with crosstalk at 1k, as I don't see that in either measurement previously posted here.

I'm using TRS-1007 settings, except for having to manually split the files.

My copy is a bit warped, but I'm not sure if that would have anything to do with it.

AT33PTG2 Technics SL-1200GR 120 Ω SFC-TR100 Side B 2 0331026.png
AT-VM760xSL Technics SL-1200GR 50k Ω SFC-TR100 Side B 1 0331026.png
 
You are lucky you do not have the blipp at 15k!mus be another pressing..maybe I should by a second… what does your matrix say?

If you edit the start too early 1khz can bleed in..
 
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Got my SFC-TR100 today! Here's two measurements I just took. It's interesting that the blip in the right channel isn't visible on the AT33PTG2.

I am wondering what is going on with crosstalk at 1k, as I don't see that in either measurement previously posted here.

I'm using TRS-1007 settings, except for having to manually split the files.

My copy is a bit warped, but I'm not sure if that would have anything to do with it.

View attachment 521535View attachment 521534
Have you tried playing it at 45 RPM? I wonder what will happen to this artifact? Will it shift or disappear?
 
I tried t0 shift the 13k, by running higher speed,.byt at 45 rpm in only go to 17250 hz, and eq below 2000 becomes wrong
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1775195116295.png


I need a 78rpm truntable....
 
It looks like the weird crosstalk at 1 kHz was indeed due to me not manually editing out the 1k tone fully.
Technics EPC-205CMK3 #2 JICO SAS B Outer SFC-TR100.png
 
As I wrote.. ;) Happens to me to. You are lucky with your record, no blip
 
There seems to be about a 1 dB channel imbalance starting at ~12 kHz on my SFC-TR100 which is reproducible across different cartridges (though not all).

Yamaha MC-5 Outer 1.2 g ~850 pF 120 Ω SFC-TR100 norm1 2 04-04-26.png
Signet TK10ML Technics SL-1200GR 50k Ω SFC-TR100 2 03312026.png
Unknown-9.png
 
Got my SFC-TR100 today! Here's two measurements I just took. It's interesting that the blip in the right channel isn't visible on the AT33PTG2.

I am wondering what is going on with crosstalk at 1k, as I don't see that in either measurement previously posted here.

I'm using TRS-1007 settings, except for having to manually split the files.

My copy is a bit warped, but I'm not sure if that would have anything to do with it.

View attachment 521535View attachment 521534
Which version in yours? Issue 2?
IMG_0423.jpeg
 
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