2. analog
  3. 1323933353

what is the proper loading

for cartridge specs that read;
# Output voltage at 1000 Hz, 5cm/sec.: 300 µV
# Channel balance at 1 kHz: < 1 dB
# Channel separation at 1 kHz: > 20 dB
# Channel separation at 15 kHz: > 10 dB
# Frequency range: 20-25.000 Hz
# Frequency response: 20-20.000 Hz + 2 / - 1 dB
# FIM distortion at recommended tracking force, DIN 45.542: < 1%
# Tracking ability at 315Hz at recommended tracking force: > 70 µm
# Compliance, dynamic, lateral: 8 µm/mN
# Stylus type: Nude elliptical
# Stylus tip radius: r/R 8/18 µm
# Equivalent stylus tip mass: 0,45 mg
# Tracking force range: 3,0-5,0 g (30-50 mN)
# Tracking force, recommended: 4,0 g (40 mN)
# Tracking angle: 20°
# Internal impedance, DC resistance: 1.5 Ohm
# Recommended load impedance: > 10 Ohm
# Cartridge body material: Aluminium
# Cartridge color: Silver/Black
# Cartridge weight: 28,5 g
fromunda
fromunda OP
148 posts
 
the loading choices on my phono amp for MC are;

17ohms
18ohms
20ohms
22ohms
69ohms
100ohms
220ohms

Which would be the best? I am thinking eiher 69ohms or 100ohms if 50 ohms is the correct load as Marakanetz says.
intactaudio
302 posts
 
This makes it simple.

Listen to the two extremes (17 & 220) and determine what you like and dislike about each.

hopefully the likes and dislikes will be apparent at which point try the 69 for a bit which puts you in the middle and see if you get the best or worst of both worlds.

If you get the best... look inbetween the values either way to fine tune. If it sounds worse in the middle, look at cartridge setup and repeat.

dave
marakanetz's avatar
marakanetz
5,473 posts
 
You must've got a great phono.
Sweep through the whole range. You will less likely fall outside of it.
Ag insider logo xs@2x
rauliruegas
13,106 posts
 
Dear Fromunda: That Ortofon, because only Ortofon states all that cartridge information ( no other manufacturer did/do it. ) IMHO could works well ( agree with you. ) between 69-100 ohms but you have to check 220 ohms too.

Now, to load an LOMC depends on the phono stage design and how cartridge and load react and that's why you have to test several loads for the cartridge. Take in count that as lower the load as lower output too, so when you will testing with different loads you need try to even SPL on your phonolinepreamp because our ears are very sensible to tiny changes in SPL and normaly likes sound with higher SPL: take care on this subject.

Regards and enjoy the music,
R.
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