XL1-S On-board mic - hum pick-up at DVinfo.net

Alan Bairstow · March 18th, 2003, 02:16 PM

I'm sure this topic has been raised many times, but as a new XL1S owner I just wondered if there have been any recent developements in the way of a solution. The motor hum and zoom servo pick-up are very noticeable when recording with a quiet back-ground - so much so that recordings of natural sounds eg. bird songs etc. are pretty useless. The obvious answer is to use an external mic - which I do whenever possible, but this is difficult in fast moving hand-held situations. Would appreciate any ideas.........

Ken Tanaka · March 18th, 2003, 02:25 PM

Indeed, this is a frequent question. Use our Search function to see quite a variety of discussions on the topic. The issue is two-fold. The mic can pick-up both the radiated sound of the lens' servo motor as well as its transmitted vibration during extremely quiet shots.

In brief, an external on-cam mic mounted to an isolation device is the common solution for a 1-man crew. Lightwave Systems makes one such rig. BeyerDynamic also makes a nice shock mount that connects to the camera's shoe.

Nathan Gifford · March 18th, 2003, 07:09 PM

I have used Lightwave Systems MM-XL1 and it works great with the stock mic. You can search the posts as there are plenty of info on this. Also you can check out The MM-XL1 Universal Mini-Mount from Light Wave Systems article on this site.

Don Palomaki · March 18th, 2003, 07:47 PM

Also, be sure that the standard mic mount screw is not turned down too tight. If you make it too tight, the damping material in the mount gets compressed and will couple more vibration from the camcorder body to the mic.

Alan Bairstow · March 20th, 2003, 12:16 PM

Thanks Ken, Nathan and Don -- very useful advice.
The Lightwave Minimount looks like it will do the job. I've also found, as suggested that slackening the fixing screw reduces the hum pick-up quite a bit. The Lightwave 'Spacer/isolator' also looks interesting as this also helps with 'shoulder-mounting' of the camcorder by moving the viewfinder forward approx. 6 cm.------ again-- many thanks

ja135321 · March 26th, 2003, 04:32 PM

I bought the Mini Mmount and the System Isolator and it didnt get rid of the motor sound. What I have realized is that when you're in a silent room with the AGC on it will still pick up the motor noise. The best solution is to turn off the AGC and manually set the volume control and you won't hear the Zoom.

K. Forman · March 26th, 2003, 04:44 PM

I had the same problem. I found that sliding the mount for the viewfinder/mic, as far to the right as possible, helped some. This places the mic further from the tape drive and lens. Then again, I only used the cam's audio when I had no other option, or as background.

Jeff Donald · March 30th, 2003, 01:52 PM

I record a great deal of nature sounds, mostly birds. The stock mic is inadequate to get high quality sound. I use the Lightwave isolator and a true shotgun mic and have no problem with AF or motor noise.

March 18th, 2003, 02:16 PM	#1
Alan Bairstow Tourist Join Date: Mar 2003 Location: Buckinghamshire UK Posts: 3	XL1-S On-board mic - hum pick-up I'm sure this topic has been raised many times, but as a new XL1S owner I just wondered if there have been any recent developements in the way of a solution. The motor hum and zoom servo pick-up are very noticeable when recording with a quiet back-ground - so much so that recordings of natural sounds eg. bird songs etc. are pretty useless. The obvious answer is to use an external mic - which I do whenever possible, but this is difficult in fast moving hand-held situations. Would appreciate any ideas......... __________________ Alan Bairstow

March 18th, 2003, 02:25 PM	#2
Ken Tanaka Retired DV Info Net Almunus Join Date: Dec 2001 Location: Chicago, IL Posts: 6,943	Welcome Alan! Indeed, this is a frequent question. Use our Search function to see quite a variety of discussions on the topic. The issue is two-fold. The mic can pick-up both the radiated sound of the lens' servo motor as well as its transmitted vibration during extremely quiet shots. In brief, an external on-cam mic mounted to an isolation device is the common solution for a 1-man crew. Lightwave Systems makes one such rig. BeyerDynamic also makes a nice shock mount that connects to the camera's shoe. __________________ Lady X Films: A lady with a boring wardrobe...and a global mission. Hey, you don't have enough stuff! Buy with confidence from our sponsors. Hand-picked as the best in the business...Really! See some of my work one frame at a time: www.KenTanaka.com

March 18th, 2003, 07:09 PM	#3
Nathan Gifford Wrangler Join Date: Sep 2001 Location: Tickfaw, LA Posts: 1,217	I have used Lightwave Systems MM-XL1 and it works great with the stock mic. You can search the posts as there are plenty of info on this. Also you can check out The MM-XL1 Universal Mini-Mount from Light Wave Systems article on this site. __________________ Nathan Gifford Southern Cyclist Magazine & Productions For quick answers try our Search! To see me and Rob Lohman click here

March 20th, 2003, 12:16 PM	#5
Alan Bairstow Tourist Join Date: Mar 2003 Location: Buckinghamshire UK Posts: 3	Thanks Ken, Nathan and Don -- very useful advice. The Lightwave Minimount looks like it will do the job. I've also found, as suggested that slackening the fixing screw reduces the hum pick-up quite a bit. The Lightwave 'Spacer/isolator' also looks interesting as this also helps with 'shoulder-mounting' of the camcorder by moving the viewfinder forward approx. 6 cm.------ again-- many thanks __________________ Alan Bairstow

March 30th, 2003, 01:52 PM	#8
Jeff Donald Warden Join Date: Mar 2002 Location: Clearwater, FL Posts: 8,287	I record a great deal of nature sounds, mostly birds. The stock mic is inadequate to get high quality sound. I use the Lightwave isolator and a true shotgun mic and have no problem with AF or motor noise. __________________ Jeff Donald Carpe Diem Search DVinfo.net for quick answers \| Where to Buy? From the best in the business: DVinfo.net sponsors

March 18th, 2003, 07:47 PM	#4
Don Palomaki Wrangler Join Date: Sep 2001 Location: Northern VA Posts: 4,487	Also, be sure that the standard mic mount screw is not turned down too tight. If you make it too tight, the damping material in the mount gets compressed and will couple more vibration from the camcorder body to the mic.

March 26th, 2003, 04:32 PM	#6
ja135321 Regular Crew Join Date: Feb 2002 Location: Los Angeles, CA Posts: 90	I bought the Mini Mmount and the System Isolator and it didnt get rid of the motor sound. What I have realized is that when you're in a silent room with the AGC on it will still pick up the motor noise. The best solution is to turn off the AGC and manually set the volume control and you won't hear the Zoom.

March 26th, 2003, 04:44 PM	#7
K. Forman Capt. Quirk Join Date: Apr 2002 Location: Middle of the woods in Georgia Posts: 3,596	I had the same problem. I found that sliding the mount for the viewfinder/mic, as far to the right as possible, helped some. This places the mic further from the tape drive and lens. Then again, I only used the cam's audio when I had no other option, or as background.