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Moerch DP-8 tonearm?

Anyone using a Moerch DP-8 tonearm? Just bought one, but I hear a noise like a hum when I increase the volume when listening to records in my turntable with this new tonearm. This hum-like noise occurs with different cartridges and different tonearm cables. And does not happen with other tonearms. The phono preamp is the same for the other tonearms. The tonearm is very well fixed to the tonearm base. And the noise only occurs when I increase the volume. What would be the possible causes?

 

portoalegre
portoalegre's avatar
portoalegre OP
29 posts
 

I've added the 7g rubber weight in the middle of the arm tube, and the resonace completely disappeared. And of couse I adjusted the counterweght again for the proper VTF!!

 

My arm tube is the blue one, that is, the heviest that Moerch produces (14g).

 

slaw's avatar
slaw
23,951 posts
 

My interest here is that I actually have one for a future project.

lewm
13,842 posts
 

Portoalegre, what cartridges?

portoalegre's avatar
portoalegre OP
29 posts
 

Hana Umami Red, ZYX Ultimate Omega X, and Van den Hul Stradivarius Crimson Ultimate

dover
2,365 posts
 

@portoallegro2016 

I have run the van den hul xgw/Moerch DP8 combo - you need the Blue Arm wand - effective mass 14g. The other wands are too light.

I did find the DP8 arm tube sensitive to touch, microphonic but no feedback issues.

Personally I did not find the arm to be as good as claimed in the audio reviews. We went from that to a Kuzma 4point11 which was a level up in performance - with a variety of top cartridges. The van den hul had to be tweaked by van den hul for the higher effective mass of the Kuzma ( 18g ).

The DP8 is quite tricky to set up correctly - if I recall correctly the manual can be a little misleading in the set up of the outrigger weights.

 

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