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Old 06-15-2011, 05:29 AM
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Default C2300 MC cart loading

I just received my fist turntable yesterday and I have a few questions about cart loading.

Can the loading on the C2300 be changed on the fly with music playing or do you have to stop the record first? Also, does anyone have any recommendations on which loading to use and how to tell that you're on the right setting? I tried all of them but didn't hear much difference.

I have the Clearaudio Concept with the Concept MC cart installed. I think the load settings are 20, 50, 100, 200, 500, & 1k ohms.
Thanks.
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Old 06-15-2011, 07:25 AM
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I use same table but with MM pickup. The concept manual states 100 pF so thats what I use. Dont know about it when it comes to MC though..

You dont need to stop the music while changing.
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Old 06-15-2011, 07:26 AM
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Yes, cart loading can be changed on the fly, while the music is playing. Start with 100 ohms and experiment from there. You'll find over extended listening that your cartridge has an ideal loading resistance that provides the best balance of dynamics and high end extension.

Regards,

Tom
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Old 06-15-2011, 08:24 AM
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dhizzle.......I agree with Tom. Start with 100 ohms. Spend some time listening to your most familiar albums, and then make an adjustment up or down, again spending some time with the new setting. You will also need to give the phono cartridge 50+ hours to break in. During the break in period the cartridge's sonic signature will shift and then settle into its permanent sound.
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Old 06-15-2011, 10:25 AM
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Good recommendations by the above members. I settled on 100 ohms for my Lyra Delos.
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Old 06-15-2011, 12:47 PM
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Thanks guys. I'll start at 100 ohms for a while.
I noticed that when listening to records I have to turn the volume up almost twice as much. Listening to cd's or music from my computer, a good listening level is around 30 and while listening through the mc phono stage it has to be at about 50. Also, the left channel seems to be slightly louder than the right.
I know I can set trim levels for the volume inputs and balance for the speakers, but are these issues common with different carts?
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Old 06-15-2011, 12:57 PM
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I have to play about 10 levels higher when playing analog vs digital. Trimming 6dB up makes it a bit better.
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Old 06-15-2011, 01:31 PM
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dhizzle...the rule of thumb is to load your MC cart at 10X the internal impedance of the cart, which in the case of the Concept MC is 11ohm, which would argue for a 110ohm loading. So as others have said, 100ohms is a good starting point, and then move 1 up (200ohms) and then 1 down (50ohms) and see how the sound changes. If you still don't like the sound in that 50-200 loading range, than by all means try the other settings but my guess is the sweet spot will be somewhere in that range. Good luck.

Here are the specs from Clearaudio's website:

Cartridge weight: 8.0 gram
Stylus shape: Micro Line
Cantilever: Boron
Coil material: OFC - copper
Compliance: 9/9 µ/mN
Recommended tracking force: 2.0 gram (+/- 0.2 gram)
Crosstalk: > 30 dB
Channel difference: < 0.5 dB
Output voltage: 0.42 mV at 5 cm/s
Cartridge Impedance: 11 Ohms
Cartridge body: Aluminium-Magnesium alloy with ceramic surface layer
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Old 06-15-2011, 01:35 PM
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Hi
I have C2300 and use my MC at 500 ohms. No trim and when I play records contra CD it is the same volume level at 50%.

Maybe your computer has low output level compared to phono.

Nothing is stated in the manual where the ohms setting is for the Concept MC cartridge.

Thanks
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Old 06-15-2011, 01:57 PM
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10x the internal impedance as mentioned above is a safe rule of thumb to start with and sort of became a industry standard to make things easier for the end user but don't be afraid to load it higher.....more times than not I find a much higher loading brings the best to the table than what the manufacture recommends. You will find many run MC wide open!!

Last edited by Removed; 06-15-2011 at 02:05 PM.
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