Music Hall MMF5 azimuth screw...HELP!

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mbleming

  • Jr. Member
  • Posts: 15
Music Hall MMF5 azimuth screw...HELP!
« on: 20 May 2009, 02:49 pm »
Hi, I have an older Music Hall MMF5 turntable and I recently noticed that the azimuth was off center, with the right side of the cartridge noticeable lower than the left, even scraping the record! I have no idea how this happened, how long it's been that way, etc! Anyway, the manual makes NO MENTION of azimuth changes at all, in fact, it's a pretty terrible and uninformative manual. I downloaded the manual from the Music Hall website for the newer MMF5.1, but I'm still clueless on how to find this mysterious azimuth screw! I've searched topics here, and still have no clue. I finally resorted to just twisting the arm and sort of fixed the problem, though it was not an exact science to say the least. In the meantime, while searching for this screw I loosened a whole host of unrelated little allen screws, etc...In the process I've probably completely destroyed the settings of my entire turntable :( WHERE IS THIS AZIMUTH SCREW?!?!? HELP!!!
thanks!
Michael

bunnyma357

Re: Music Hall MMF5 azimuth screw...HELP!
« Reply #1 on: 20 May 2009, 04:22 pm »
There was a picture in Mike Galusha's Gallery, but that doesn't appear available with the new site host. Here's what he wrote about the Azimuth screw:

"There are photos of this in the Gallery. One photo shows the location of the azimuth adjustment screw and of the VTA adjustment screws. The azimuth screw cannot be accessed without removing the anti-skate post from the gimbal. Hopefully you won't have to adjust it."

Hope this helps.

Jim C

Wayner

Re: Music Hall MMF5 azimuth screw...HELP!
« Reply #2 on: 20 May 2009, 04:28 pm »
Does just the head turn, or does the whole arm-tube turn? If the arm-tube turns, the adjustment screw is on the pivot body somewhere perpendicular to the arm.

Wayner

analognut

Re: Music Hall MMF5 azimuth screw...HELP!
« Reply #3 on: 20 May 2009, 04:39 pm »
Removing the anti-skate post on the Pro-ject tonearm is very easy. Simply unscrew it, then you will have access to the azimuth screw on the armtube. The 2 allen screws you loosened are the arm height adjustment.

bunnyma357

Re: Music Hall MMF5 azimuth screw...HELP!
« Reply #4 on: 20 May 2009, 04:43 pm »
Here is a link to instructions for a Pro-Ject RPM-5 which I believe uses the same or similar Pro-Ject arm as the MMF-5. And it is the whole armtube that rotates.

http://www.sumikoaudio.net/project/manuals/manual_rpm5.pdf



Jim C

bunnyma357

Re: Music Hall MMF5 azimuth screw...HELP!
« Reply #5 on: 20 May 2009, 05:14 pm »
In looking at the mmf-5.1 instructions, the only thing odd is that they say to use a clockwise turn to remove the anti-skating post with the three notches that the weight loop attaches to, so that post may have a reverse thread.

"Azimuth Adjustment: Azimuth is the angle of the stylus to the record groove. Viewed from head-on, you want the stylus to be perpendicular to the record groove so as to not favor one channel over the other. Keep in mind that azimuth is properly set at the factory and rarely needs to be adjusted. You can check the azimuth by performing a visual inspection. Place the tonearm (9) in the middle of a non-spinning record and look to see that the stylus is perpendicular to the record groove. If it is off to one side or the other, you will need to adjust the azimuth. To adjust azimuth, simply loosen the setscrew located on the top of the tonearm (9) under the anti-skating rod (15). To adjust the setscrew, you will need to first remove the anti-skating rod (15). Start with the tonearm (9) in the tonearm rest (8). Remove the anti-skating weight (16) from the anti-skating rod (15). Hold the anti-skating rod (15) between your thumb and forefinger and unscrew it using a clockwise rotation. Lift the tonearm (9) up about 2 ? 3 inches out of the tonearm rest (8). Look carefully on top of the tonearm (9) near the area previously occupied by the anti-skating rod (15). You will see a small setscrew. Slightly loosen this screw. This will loosen the tonearm (9) and allow you to twist it from side to side. Position the tonearm (9) so that the stylus is perpendicular to the record groove. Tighten the setscrew. Replace the anti-skating rod (15) and anti-skating weight (16). Listen. You are listening for a balanced soundstage with the greatest area and depth. You may need to go back and forth a couple of times to achieve the best setting. Please note that small changes in azimuth make a big difference in the sound."

Jim C

mbleming

  • Jr. Member
  • Posts: 15
Re: Music Hall MMF5 azimuth screw...HELP!
« Reply #6 on: 20 May 2009, 07:08 pm »
Thanks everyone, I truly appreciate the help. I'll give it another shot after work tonight. This turntable has been fine, but...sigh, wish I had the funds for an upgrade!