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View attachment 332298
Here's what extra loading does to the response. I decided I preferred having the response flat to 10khz (well within what I can hear) over less of a peak at 20khz but more rise at 10khz.
RIAAs for present MM cartridges need R at 25k 27k 29k 31k 33k 35k 47k and capacitance from 50 to 800 pF… at 50pF steps to have any chance of flattening the present MMs…since no one has that , variable/ custom loading plugs should be standard for a good RIAA
RIAAs for present MM cartridges need R at 25k 27k 29k 31k 33k 35k 47k and capacitance from 50 to 800 pF… at 50pF steps to have any chance of flattening the present MMs…since no one has that , variable/ custom loading plugs should be standard for a good RIAA
Just make sure to take into account the capacitance of the inline adaptor... not an issue for capacitances over 200pf, but if trying for 100pf or under, it can be a substantial factor!
I would be very curious to see an Ortofon quintet; Many define it as "open" and detailed but my blue is anything but open
Thanks for all the work you are doing
I would be very curious to see an Ortofon quintet; Many define it as "open" and detailed but my blue is anything but open
Thanks for all the work you are doing
Recording: no adjustment on balance,Azimuth adjustment on cartridge quite alot needed, 16 bit 96kHz.Recording characteristic RIAA.
Comments
Quite surprised and maybe disappointed to the the JICO peak missing, and getting a high end drop instead, was planning to load it for a flat response. Maybe better with lower Capacitance
But when I see the may 1981 review plots my response with CA TRS-1007 are quite similar or even better than the original
Nice low distortion
Crosstalk OK,even better on Denon records below
I also have a Hyper elliptical Tonar 6445 for this cartridge, but do not want to disturb the nice setup I have now.
Please comment on the HYPEREL 6445 VTA/SRA in the spoiler below, should I send it back?
Not optimized, seem to have higher distortion than SAS/B, and the SRA/VTA seems wring even with horizontal arm, missing VTA adjustement osn Sony PS-212
Had a hard time getting good focus/lighting this time
Vary Flat, have not seen the DENON records as flat before, they are is more like the CA TRS-1007 normally, myab it is the low tracking force 1gram?
All Jico SAS havw a visual steep slope, som youtub videos state VTA to be 31 degrees, 11 degrees off the standard!! Why on earth do that JICO this?
My measurement of VTA also show close to 30 degrees.
This fail adds 2 % extra intermodulation distortion to all music.... that will be audible..
Recording: no adjustment on balance,Azimuth adjustment on cartridge quite alot needed, 16 bit 96kHz.Recording characteristic RIAA.
Comments
Quite surprised and maybe disappointed to the the JICO peak missing, and getting a high end drop instead, was planning to load it for a flat response. Maybe better with lower Capacitance
But when I see the may 1981 review plots my response with CA TRS-1007 are quite similar or even better than the original
Nice low distortion
Crosstalk OK,even better on Denon records below
I also have a Hyper elliptical Tonar 6445 for this cartridge, but do not want to disturb the nice setup I have now.
Please comment on the HYPEREL 6445 VTA/SRA in the spoiler below, should I send it back?
View attachment 338200
Not optimized, seem to have higher distortion than SAS/B, and the SRA/VTA seems wring even with horizontal arm, missing VTA adjustement osn Sony PS-212 View attachment 338201
View attachment 338195 View attachment 338196
Vary Flat, have not seen the DENON records as flat before, they are is more like the CA TRS-1007 normally, myab it is the low tracking force 1gram?
According to the HiFi Choice tests done in the 80's on the V15IVHE, the response was very similar to the SASB version tested above, flat to 10 - 12khz and a gentle rolloff after. I can't remember the test disc but it could be the CBS (I'll have to check) and capacitance was moderate, also from memory. The IV seemed more load-immune than the III or V models also and mine with medium hours on it is an odd one to come to terms with subjectively, as it takes some time to acclimatise to for some reason. Once adjusted for, it seems quite truthful in tone and perspectives, just not very 'demonstrative' and 'Choice marked it way down because of this. Apologies for a purely subjective post here...
Just checked the 1979 'Choice book - Responses done at 220 and 330pF capacitance for the V15IV and a variety of test discs were used )but not stated for this cartridge)0o including the Shure TTR103 which needed no equalisation. Other discs were B&O A2007, JVC TRS 1007, B&K QR2009, CBS STR100, 112
Re VTA: Make sure your SRA is correct first. 1 g VTF might be to little, suspension compression is too light. Range is 1.0-1.5 g. Suspension might change after a few hours play also.
SRA seems around 94°. Adjust VTF up and check again.
