Soundsmith MIMC Star???

Re: Soundsmith MIMC Star???

Postby thegage » Sat Sep 02, 2017 1:56 pm

Jim is on the right track. Since the advent of CD and "line" preamps, an issue with many systems has been too much gain--where you only have to turn the volume knob to 9- or 10-o'clock to get blasted out of the room. In the good ol' days when playing vinyl I remember that I almost always had to turn volume up well past 1- or 2-o'clock to get that sort of volume. Tuners and tape decks often had their own potentiometers on their output to better match phono. (My current tuner has no such feature, so I have a set of resistors in the line to bring down its output.) Having to turn it up gives you a broader range of volume control and, as noted, has you operating in a potentially better sonic part of the volume control. A bit of a pain, but I think worth it.

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Re: Soundsmith MIMC Star???

Postby Bloodflame666 » Sun Sep 03, 2017 11:12 pm

So what's everyone using for load setting and why?
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Re: Soundsmith MIMC Star???

Postby Bloodflame666 » Mon Sep 04, 2017 9:45 am

The reason I ask is because the website says to load it at >470. Does this mean to load it at anything greater than 470 as in 470-0 ohm or 470 to say 47k. Which direction they are saying to take it in is confusing to me...
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Re: Soundsmith MIMC Star???

Postby SubVet » Mon Sep 04, 2017 9:54 am

Bloodflame666 wrote:The reason I ask is because the website says to load it at >470. Does this mean to load it at anything greater than 470 as in 470-0 ohm or 470 to say 47k. Which direction they are saying to take it in is confusing to me...

I pretty sure it is 470+ to 47k. I'm running 500 now and need to give it a listen at 1000.
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Re: Soundsmith MIMC Star???

Postby Bloodflame666 » Mon Sep 04, 2017 10:06 am

That's what I was thinking but that whole concept is slightly confusing to me. It seems like everyone runs between 470-1000 but I want to make sure. I'm at 2.05 grams and 475ohm loading but I'm also going to bump to 1000 and check it out. I've also noticed that any movement in vta makes a big difference. I'm slightly tail up right now but after moving to 1000, I will readjust the vta to compensate.
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Re: Soundsmith MIMC Star???

Postby Argon66 » Mon Sep 04, 2017 10:45 am

After several adjustments I enddd up with the following settings...

60db
1 k
1.97 g
Arm slightly below parallel (which I think puts the cart closer to parallel)
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Re: Soundsmith MIMC Star???

Postby Bloodflame666 » Mon Sep 04, 2017 10:53 am

I guess it's just confusing me to when they say "minimum load 470". Are they saying to possibly add more if need be which would mean going 470 to 0 or do they mean the other way from 470 to 47k. My understanding is that "greater than 470" would mean to go the other way towards 0. Maybe I'm completely wrong and backwards
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Re: Soundsmith MIMC Star???

Postby Ayre Conditioned » Mon Sep 04, 2017 1:22 pm

Bloodflame666 wrote:I guess it's just confusing me to when they say "minimum load 470". Are they saying to possibly add more if need be which would mean going 470 to 0 or do they mean the other way from 470 to 47k. My understanding is that "greater than 470" would mean to go the other way towards 0. Maybe I'm completely wrong and backwards


They mean from 470 to 47k. But listen very carefully if you decide to go to 1k. This is just like turning a high frequency tone control up (if you had one). It might sound exciting at first but if you're like me it sounds more natural at 470. Natural trumps boom and sizzle.
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Re: Soundsmith MIMC Star???

Postby cbl117 » Mon Sep 04, 2017 2:09 pm

Bloodflame666 wrote:I guess it's just confusing me to when they say "minimum load 470". Are they saying to possibly add more if need be which would mean going 470 to 0 or do they mean the other way from 470 to 47k. My understanding is that "greater than 470" would mean to go the other way towards 0. Maybe I'm completely wrong and backwards


When they say 470 ohm min, that means a range of 470 ohms up to 47 Kohms. The minimum load value is based on the internal impedance of the cartridge in use, which varies, and results in the minimum load value varying as well. As a rule of thumb the minimum load value is 10x the internal impedance of the cartridge in use.

The loading range given (in your case 470 ohms up to 47 Kohms) is tuning (read: damping) the ultrasonic resonant frequency that is inherent to all moving coil cartridges.

The lower the load (i.e. 470 ohms) the more damping is applied to the ultrasonic resonant frequency. This results in less presence and perceived treble energy.

The higher the load (i.e. 47k) the less damping is applied to the ultrasonic resonant frequency. This results in more presence and perceived treble energy.

In theory, you are trying to load the cartridge to obtain the flattest frequency response, but a lot comes into play in application, such as the capabilities of your phono preamp.

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Last edited by cbl117 on Mon Sep 04, 2017 2:20 pm, edited 3 times in total.
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Re: Soundsmith MIMC Star???

Postby Bloodflame666 » Mon Sep 04, 2017 2:14 pm

So, sonically speaking, what should I be hearing as a difference between switching from 470-1000k? I like how 470 sounds but can't help but want to try 1000k....
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