Changing the Capsule in the AVANTONE CV-28 Tube Microphone:

Note: Failure to follow this procedure can result in damage to the microphone.

 

   
 

(1)  Hold the microphone with capsule pointed away from your body. Grip Microphone Capsule Holder Base (polished metal), just below Grille Assembly (brushed metal), with thumb and index finger.  Support the microphone body in the remainder of your hand.  (See Figure 1)

(2)  With your other hand, unscrew the Grille assembly, twisting with light steady pressure.  Take extreme care that the capsule holder base does not unscrew from the body of the microphone, as this can cause significant wiring damage to the microphone.  (See Figure 1)

 

(3)  With the Grille assembly removed, continue to hold the microphone in your hand as before.  Remove the capsule from capsule holder base by unscrewing it with light steady pressure.  (See Figure 2)

 

(4) After capsule is removed, check that the spring loaded plunger contact has fully extended by pressing on it with your finger.  It should extend and retract with minimal pressure.  If not, gently grip the gold plated plunger with a small pair of long nose pliers and lightly extend the plunger.  (See Figure 3)

NOTE: An extremely light coat of electronic lubricant (De-Oxit Gold is recommended) periodically applied with a small applicator on the side of the plunger and to the exposed capsule holder assembly threading is a good idea.  Do not spray the microphone. Also thinly apply the lubricant to the exposed capsule holder assembly threading prior to reassembly.

 

(5)  Hold the microphone as described in step 1.  Take the new capsule and gently thread it on to the holder assembly, taking care not to cross-thread the capsule. The capsule will not need to be spun on more than approx. 2 complete revolutions (or until slightly snug).  (See Figure 4)

 

(6) Replace Grille assembly back onto the holder, continuing to hold the microphone as described in Step 1(See Figure 5)

CAUTION: Over-tightening the Grille onto the holder will make it difficult to remove later.

 
 
 

 

 

 

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All design, technical specifications and pricing are subject to change without notice E&OE.