Comments on: JT30.com is Ten years old today. http://www.jt30.com/2009/04/jt30-com-is-ten-years-old-today/ Amolified Blues Harmonica Mon, 30 Jan 2012 23:34:46 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Keith http://www.jt30.com/2009/04/jt30-com-is-ten-years-old-today/comment-page-1/#comment-54 Keith Tue, 05 May 2009 17:28:00 +0000 http://www.jt30.com/_jt30wp/?p=143#comment-54 The astatic and cads used a different pin out. The standard xlr cable uses a floating signal to avoid hum. The high impdedance uses different pins and is just like a guitar cord and ignores one of the three wires. I am surprised that the mic works at all with a standard xlr cable.<br /><br />Keith The astatic and cads used a different pin out. The standard xlr cable uses a floating signal to avoid hum. The high impdedance uses different pins and is just like a guitar cord and ignores one of the three wires. I am surprised that the mic works at all with a standard xlr cable.

Keith

]]> By: Bob L http://www.jt30.com/2009/04/jt30-com-is-ten-years-old-today/comment-page-1/#comment-53 Bob L Tue, 05 May 2009 16:52:00 +0000 http://www.jt30.com/_jt30wp/?p=143#comment-53 Special cord? Are you speaking about the XLR mic cable that he plugs his mic into? The one that connects to our sound system snake on the stage? We use a good quality XLR cable for all of our microphones on the stage but have not heard of a high impedance cable. If that is true, I will make a trek to our local Guitar Center to get one as well. Special cord? Are you speaking about the XLR mic cable that he plugs his mic into? The one that connects to our sound system snake on the stage? We use a good quality XLR cable for all of our microphones on the stage but have not heard of a high impedance cable. If that is true, I will make a trek to our local Guitar Center to get one as well.

]]> By: Keith http://www.jt30.com/2009/04/jt30-com-is-ten-years-old-today/comment-page-1/#comment-52 Keith Tue, 05 May 2009 16:44:00 +0000 http://www.jt30.com/_jt30wp/?p=143#comment-52 You have to take a pair of pliers and twist it off. You will have to wrap it with a few turns of some thick tape so that the pliers don't scratch it. Then you have to epoxy it back in place when you are done.<br /><br />The noise often comes from a broken connection or a bad ground. These use a special cord and a normal xlr cord will not work. You need the High impedance cord that some harmonica stores sell. You have to take a pair of pliers and twist it off. You will have to wrap it with a few turns of some thick tape so that the pliers don’t scratch it. Then you have to epoxy it back in place when you are done.

The noise often comes from a broken connection or a bad ground. These use a special cord and a normal xlr cord will not work. You need the High impedance cord that some harmonica stores sell.

]]> By: Bob L http://www.jt30.com/2009/04/jt30-com-is-ten-years-old-today/comment-page-1/#comment-51 Bob L Tue, 05 May 2009 14:39:00 +0000 http://www.jt30.com/_jt30wp/?p=143#comment-51 Keith,<br /><br />You sort of told me what I was hoping for. Since the XLR connection is glued in, do you have any suggestions on how to extract the connector in order to get at the solder connections on the pins? Keith,

You sort of told me what I was hoping for. Since the XLR connection is glued in, do you have any suggestions on how to extract the connector in order to get at the solder connections on the pins?

]]> By: Keith http://www.jt30.com/2009/04/jt30-com-is-ten-years-old-today/comment-page-1/#comment-50 Keith Mon, 04 May 2009 22:58:00 +0000 http://www.jt30.com/_jt30wp/?p=143#comment-50 It does not sound like the element (it's a 151). It sounds like the cable. Or it could be the grounding. The astatic CAD was glued together and the connection breaks loose after a while. You might try re-soldering the connections inside and making sure that the cold side of the element is well grounded. It does not sound like the element (it’s a 151). It sounds like the cable. Or it could be the grounding. The astatic CAD was glued together and the connection breaks loose after a while. You might try re-soldering the connections inside and making sure that the cold side of the element is well grounded.

]]> By: Bob L http://www.jt30.com/2009/04/jt30-com-is-ten-years-old-today/comment-page-1/#comment-49 Bob L Mon, 04 May 2009 22:52:00 +0000 http://www.jt30.com/_jt30wp/?p=143#comment-49 Hi Keith, I am not a harmonica player, but am a friend of someone I am trying to help out who owns a CAD HM50 VC. He plays harmonica at our church and is experiencing problems with the mic, in that it is providing a scratching static in addition to an otherwise clear strong signal. The element in this is an Astatic MC-127, with a paper label of MC151. I wired around the VC thinking the VC pot may be faulty, but no luck. Does this sound like a crystal that is broken and if so, can he replace the expensive MC151 with a ceramic of lesser cost?<br />Thanks Hi Keith, I am not a harmonica player, but am a friend of someone I am trying to help out who owns a CAD HM50 VC. He plays harmonica at our church and is experiencing problems with the mic, in that it is providing a scratching static in addition to an otherwise clear strong signal. The element in this is an Astatic MC-127, with a paper label of MC151. I wired around the VC thinking the VC pot may be faulty, but no luck. Does this sound like a crystal that is broken and if so, can he replace the expensive MC151 with a ceramic of lesser cost?
Thanks

]]> By: Anonymous http://www.jt30.com/2009/04/jt30-com-is-ten-years-old-today/comment-page-1/#comment-48 Anonymous Mon, 27 Apr 2009 10:08:00 +0000 http://www.jt30.com/_jt30wp/?p=143#comment-48 Happy Birthday and please keep up the good work.<br /><br />HarmonicaDylan Happy Birthday and please keep up the good work.

HarmonicaDylan

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