I ordered pairs of 47 and 80 ohms resistors so I'll give them a try.
Ortofon A-90 Tonality Question
I got an A-90 about two weeks ago to replace a Koetsu RSP. I have it dialed in as best as possible and find that it does almost everything well in my system. I have the cartridge body level in terms of SRA, VTF is 2.2 grams and azimuth was measured with a DMM/test record.
The problem I am having is a leanness in the midrange, especially on vocals. There is a bit more sibilance than I would expect and there is a lack of richness in the lower vocal registers.
This may be that I am used to the Koetsu sound but based on observations here and on AA this doesn't seem to be a general issue and it seems more pronounced than I would expect.
Associated equipment is VPI HR-X/JMW 12.5 with Discovery wire (run from cartridge clips and soldered to phono stage input), Herron VTPH-2 phono stage, very modified Cary SLI-80 amp and Merlin TSM-MMi speakers. Interconnects are VH labs DIY silver and speaker cables are VH Labs Chela.
Based on general specifications the JMW arm should match fairly well to the A-90 but the A-90 performance seems to have some tonearm dependence. Also, there are only about 25 hours on the A-90 so it change over time.
Anyone running an A-90 in a VPI arm or have similar results in other setups?
The problem I am having is a leanness in the midrange, especially on vocals. There is a bit more sibilance than I would expect and there is a lack of richness in the lower vocal registers.
This may be that I am used to the Koetsu sound but based on observations here and on AA this doesn't seem to be a general issue and it seems more pronounced than I would expect.
Associated equipment is VPI HR-X/JMW 12.5 with Discovery wire (run from cartridge clips and soldered to phono stage input), Herron VTPH-2 phono stage, very modified Cary SLI-80 amp and Merlin TSM-MMi speakers. Interconnects are VH labs DIY silver and speaker cables are VH Labs Chela.
Based on general specifications the JMW arm should match fairly well to the A-90 but the A-90 performance seems to have some tonearm dependence. Also, there are only about 25 hours on the A-90 so it change over time.
Anyone running an A-90 in a VPI arm or have similar results in other setups?
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