Jag har själv några mikrofoner, dynamiska och kristall, och hör ju skillnaden mellan dessa sinsemellan, men sen finns ju dessa keramiska också. Kan nån förklara skillnaden mellan olika mikrofontyper, funktion, konstruktion och ljud.

Hej, kanske dessa urklipp kan förklara lite av vad det gäller Crystal / Ceramiska element.
Crystal and Ceramic Microphones.

The original crystal elements are delicate. If you drop them, leave them in the trunk on a cold night or leave them in the back seat of the car on a hot day, they die. The Ceramic elements are tough and will last forever.

The crystal elements are 'Hotter' and sound louder at the same volume. The ceramic elements are 'Dirtier' and provide a nastier 'Attention Kmart Shoppers' kind of sound.

So it depends on the sound that you want. Do you want clear musical tones to back up a folk singer or play irish music or do you want that big, bad William Clarke playing through the reverb on an old fender bassman sound?

Willaim Clarke used the Ceramics. Little Walter used the Crystals.

Astatic now sells a ceramic element (MC-127) that is harder to break and yet very similar to the original crystal elements (MC-151). Little Walter used the crystal element JT-30 when he recorded and performed, but he had no choice. Gary Primich told me that he prefers the ceramic element because it as a little raunchier sounding. I am told that William Clarke used the Ceramic element. They sound so much alike that I can’t tell the difference. I can hear differences between individual crystal elements – two elements from the same batch can sound quite different, but I can’t tell you if an element is crystal or ceramic just by listening



The introduction of the crystal microphone created a new era of cheap better quality microphones. Astatic Corporation began when two Ham Radio enthusiasts, C. M. Chorpening and F. H. Woodworth, found that they could make a microphone out of Rochelle salts. Rochelle salts are one of three different salts found in household Cream of Tarter. It has the strange ability to squirt out an electric current when you bend a crystal. This is called the piezoelectric effect. The trick is to bend the crystal without cracking it.
Chorpening and Woodworth took a thin piece of Rochelle salt and placed it so that an armature could push on the ends of the crystal causing it to bend on a fulcrum.

Sound vibrates the diaphragm that moves the armature that bends the crystal. Small copper foil strips attached to the Rochelle salt crystal transmit the electricity out to the amplifier connector.

A ceramic microphone element works the same way. The Rochelle salt is not very strong and crumbles easily. If you drop a mic or let it freeze or it gets too hot the element breaks in half and is useless. Stronger materials with piezoelectric effects similar or even stronger than then Rochelle salts have been discovered over the years. The Rochelle salts absorb water or become permanently bent so that old ones have low output. Ceramic elements work exactly the same way as the Rochelle salt microphones, using the same internal parts, except that it uses a small slab of a piezoelectric material made out of a ceramic compound. The ceramic elements sound much like the crystal elements.
Today, Crystal and Ceramic microphones are considered low quality and although they are better than carbon microphones are usually used where low cost is more important than good sound reproduction.

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