Mighty Mober For My Linn Sondek LP12, Mober SSP 12 Sub Platter

Julien, my friendly Linn LP12 kaki, who is also my hifi COP, a.k.a. Chief Of Poison, introduced me to the world of Mober, an after market parts vendor for the Linn LP12. In fact, Mober's parts catalog is so complete, that you can actually choose to build a whole LP12 out of Mober parts list! However be warned that if you do that, I suspect the actual end product, an LP12 look a like may not sound much a like the Linn version either.........

Also when reading in to Mober's story, I found that Edmund Chan, the Mober man is also the man behind Hercules PS by Stamford Audio, which I use to repleced the Linn Vahalla PS and still loved till date. That already gave me a healthy dose of confidence on Mober's stuff. At one point, Mober was so controversial in the Linn forums, because there were just as many pro Mober fans vs Linn purist, which resulted in a war on almost every topic posted. It got so bad that Linn decided to shut down the forum totally. Edmund and his henchmen were thrown out and denied membership, forever! Yeah, I know how up tight those Linn purist can be!

As I discussed with Julien, my buddy(who denies his poisoning abilities) about the Linn Karousel bearing option, that everyone is hot over heels about, but the high cost factor remained in my doubt and so in one brilliant stroke, Julien suggested I look in to the Mober alternative. Mober's store is on Ebay and he ships out of Hong Kong. After going thru Mober's Ebay store, I ended up not only with Mober's bearing, but also an Mober SSP12(which is Mober's sub plater) and also Mose+ out board casing kit for my Hercules II Gold PS board. You see, before Linn's Karousel, Mober was already selling his bearing of a similar design. And like the Karousel, Mober's bearing mount is much bigger, so much of the original LP12 inner pieces will either have to be changed or modified! The inner brace bar which holds the Cirkus bearing will need to have the bearing fitting hole enlarged, but Mober sent me a replacement to fit with his bearing instead. The Hercules II Gold PS board won't fit either, so it will be moved outboard with the Mose+ casing kit! 

Now you can see, why I was so hesitant in considering the Karousel bearing! With so much changes, the cost was just adding up big time, if I had stuck to the Linn parts bin! With Mober's more reasonable pricing, that move was a whole lot more palatable, financially. Actually, if you scour the www carefully by searching for Linn LP12 parts, you'll find much after market bit's & pieces for your Linn, some very well designed, others down right wacky & possibly rather tweaky by looks. I am just saying this, that in the Linn LP12 universe, there exist a whole lot of other options other than the original. 

Mober box arrived via FedEx

Inside the Mober box

I ordered all the stuff as mentioned above, made my payment and in about 10 days or so, the Mober box arrived by FedEx. As you can see, the box is very well packed. The first item I can easily play with is the Mober SSP12 sub platter, which does not require me to disassemble the turn table just yet. All the other parts will have to wait until the current MCO to finish, when we come out of the lockdown, as I would like to refinish my black ash plinth too, while at it. So will have to wait until my buddy's furniture workshop re-opens for business.

Mober recommends that when using his bearing, to pair with the SSP12 sub platter for best results, however, the Linn Cirkus LP12 sub platter can still be used. Since the SSP12 sub platter is compatible with the existing Cirkus bearing, it will be an easy swap in. 

The difference the Mober SSP12 and the Cirkus sub platter is obvious. Mober's have a pale gold coating in the center of the top spindle. Where it's not so obvious is where the biggest difference lies, at the tip of the bearing shaft! Linn's patented bearing shaft tip is rounded off versus Mober's which is bearing fused, much like those old Thorens sub platter design from the late 50's and early 60's. Otherwise, nearly all other design aspects of both the sub platter looks identical, save for that matt aluminum finishing on the Linn, and shiny surface of the Mober. So how does that Mober sub platter sound comparatively to the Linn?

From left: Linn sub platter, then the shinny Mober sub platter on the right 

Linn sub platter, look at the rounded tip of the bearing shaft 

Mober SSP12, with the bearing fused at the tip as the focused point of the bearing shaft

The swap over was relatively easy, I pulled the Linn sub platter out from the turn table, wipe clean the shaft from the bearing oil with a piece of tissue, then re-lube the bearing and proceed to drop in the Mober sub platter. Allow some time, about 10-15 minutes to let the bearing shaft sink in by gravity, best not to use force. Once the sub platter sits in nicely, time to fit the outer platter on, and record matt, now your're ready to spin LPs!

From the very first moment the LP started spinning again, I heard a distinct, sharp high mid frequency range poking out of the overall frequency spectrum. While this makes vocals pop out and stabilizes imaging better, I much preferred Linn's overall top to bottom frequency coherence and evenness. I also note that the Mober sub platter is subjectively quieter in the musical background too. Otherwise, all other sound quality character remains largely un-changed. The bass is still solidly filled up and gutsy, the mid range comes with the peak as mentioned, and treble remains airy & refined. 

Over a few weeks, that mid range peak started to be reduced to almost un-detectable, except with certain LPs or songs, I could still hear it. That's the problem with audio, once you've heard it, it's very difficult to unhear it. From time to time or song to song that peak high mid just sticks out enough to remind you about the Mober! I actually find this type of sonic character very much like sitting one's hifi equipment on 3 pieces of downward pointer footings, but the Mober being a whole lot more discreet. One of the main reasons I never use those tipsy downward pointing footers on my hifi equipment. 

I am hoping that once I pair this sub platter to the Mober bearing, this anomaly would disappear totally for a perfect & coherent match. I also suspect that with the neutrality of the Benx Micro LP cartridge also pushed the Mober towards this slight peak in the high mids, and I suspect my other cartridge the warmer sounding Koetsu Black which is more sympathetic, may be a better match with the Mober items.  Let's see......

The Linn sub platter just before removal

The well sit in Mober SSP12 after 15 minutes, fits nicely too

With that being said, I believe that Mober sub platter & bearing kit is best used as a set. The Mober SSP12 when used with an existing Cirkus based Linn LP12 turntable, the compatibility may rest on a few other items too, such as cartridge, cable & turn table set up. That makes this so called up grade a small gamble, and YMMV is all I can tell you at this point. Well, at least till I get all the other Mober items in to my Linn Sondek LP12. Not sure when that is possible in the current pandemic & lockdown situation........................... 

My Linn Sondek LP12 is back in action again. For Linn purist, in which this photo I shared on Linn FB group, the LP clamp used here is a crime punishable by crucifixion! For me, as long as it's floating my boat, who cares?