I purchased the EDR9-COPY which uses the OEM body with a JICO stylus (model 239-DSH) with a bonded Shibata tip. It can be assumed this replacement stylus does not have the sophisticated internal "tuned tube" to mechanically compensate for the system resonance. I want to shed some light on some issues I discovered while setting up this cartridge with this replacement stylus.
I used the Mint protractor to accurately align the EDR9-COPY on a Technics 1200MKII arm (w/KAB fluid damper and silver internal wire). The tracking force was at 1.2g. I was less than thrilled and after a run-in of about 25 hours, declared the cartridge not worthy of company to my DL-160, MMC2, 681EEE-III. I experienced diminished bass, harsh highs, IGD, narrow soundstage yet a small band in the mids showed promise.
After several months I tried the EDR9-COPY again. This time, I focused on why I was getting poor tracking and breakup on the lead-out grooves. VTA is where I began and I noticed two things. I very closely inspected the vertical tracking angle and stylus rake angle. The cantilever looked to be at 40 degrees instead of 20-25. The diamond tip (stylus rake angle), instead of 90-92 deg. was actually more like 110 degrees. The other thing I noticed was that at 1.2 grams tracking, the cantilever hardly budged when lowering the needle. This cannot be close the the OEM's compliance.
I dropped the arm height all the way (now it is noticeably tail-down) and tried VTF at 2.2 grams. I now have a totally different cartridge - for the better. I ended up with VTF at 2.5 and will gradually lower it after more break-in.
Before, I had a noisy cartridge without "body" and tone, weak drooping bass, limited and hazy highs, and a lack of coherence. Now, I have a cartridge that is quieter in the groove than my AT33PTG/II and MMC2. It is now coherent from deep bass (that showed up to great effect) through the upper limit of my (~16,500 Hz) hearing. No sibilance at all. The midrange is very smooth and engaging. Transparency is happening in a big way. I was ready to sell this cart...now I cannot.
I used the Mint protractor to accurately align the EDR9-COPY on a Technics 1200MKII arm (w/KAB fluid damper and silver internal wire). The tracking force was at 1.2g. I was less than thrilled and after a run-in of about 25 hours, declared the cartridge not worthy of company to my DL-160, MMC2, 681EEE-III. I experienced diminished bass, harsh highs, IGD, narrow soundstage yet a small band in the mids showed promise.
After several months I tried the EDR9-COPY again. This time, I focused on why I was getting poor tracking and breakup on the lead-out grooves. VTA is where I began and I noticed two things. I very closely inspected the vertical tracking angle and stylus rake angle. The cantilever looked to be at 40 degrees instead of 20-25. The diamond tip (stylus rake angle), instead of 90-92 deg. was actually more like 110 degrees. The other thing I noticed was that at 1.2 grams tracking, the cantilever hardly budged when lowering the needle. This cannot be close the the OEM's compliance.
I dropped the arm height all the way (now it is noticeably tail-down) and tried VTF at 2.2 grams. I now have a totally different cartridge - for the better. I ended up with VTF at 2.5 and will gradually lower it after more break-in.
Before, I had a noisy cartridge without "body" and tone, weak drooping bass, limited and hazy highs, and a lack of coherence. Now, I have a cartridge that is quieter in the groove than my AT33PTG/II and MMC2. It is now coherent from deep bass (that showed up to great effect) through the upper limit of my (~16,500 Hz) hearing. No sibilance at all. The midrange is very smooth and engaging. Transparency is happening in a big way. I was ready to sell this cart...now I cannot.