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Quote from: Church-Audio on March 09, 2007, 04:20:39 PMQuote from: AudBall on March 09, 2007, 04:16:13 PMI found some pics that I took of the CM-1000/CP-101(card cap):http://taperssection.com/index.php/topic,67635.msg909501.html#msg909501I'll take come pics of the 700 caps when I get home...That NAK 1000 cap is made by Primo its an OEM version of the em 23 cardioid cap they changed a few things but there is one dead give away the phase plug in front of the capsule is 100% primo engineering.There's two different caps in those pictures....the top is from a cm300. The bottom two are from the 1000. Is that the one you're referring to?
Quote from: AudBall on March 09, 2007, 04:16:13 PMI found some pics that I took of the CM-1000/CP-101(card cap):http://taperssection.com/index.php/topic,67635.msg909501.html#msg909501I'll take come pics of the 700 caps when I get home...That NAK 1000 cap is made by Primo its an OEM version of the em 23 cardioid cap they changed a few things but there is one dead give away the phase plug in front of the capsule is 100% primo engineering.
I found some pics that I took of the CM-1000/CP-101(card cap):http://taperssection.com/index.php/topic,67635.msg909501.html#msg909501I'll take come pics of the 700 caps when I get home...
Interesting...
As promised....The cards are on the left, the omnis are on the right. Notice the color difference in my cards (brass ring vs. silver, black plastic vs. grey)
You can see here that Primo simply put a back chamber on the omni mics and left the backplate open on the Cardioid mics. They use a simple gasket approach to allow the tailoring of the front to back ratio of the capsule. This is one tweak that can be done to this mics to alter the directional characteristics of this capsule. By tightening the plastic screw on the back of the capsule you can infect control the back venting of the back plate thus control the compliance of the diaphragm. This tweak can allow for more bottom end or less bottom end depending on how "open" the screw is.
Quote from: Church-Audio on March 10, 2007, 02:06:56 AMYou can see here that Primo simply put a back chamber on the omni mics and left the backplate open on the Cardioid mics. They use a simple gasket approach to allow the tailoring of the front to back ratio of the capsule. This is one tweak that can be done to this mics to alter the directional characteristics of this capsule. By tightening the plastic screw on the back of the capsule you can infect control the back venting of the back plate thus control the compliance of the diaphragm. This tweak can allow for more bottom end or less bottom end depending on how "open" the screw is. Chris, this is all great info! When you say 'plastic screw' are you referring to the outer ring with the holes on either side? The two holes kinda remind me of the screw-back watches and their special 'screwdrivers'.
Quote from: AudBall on March 10, 2007, 07:26:52 AMQuote from: Church-Audio on March 10, 2007, 02:06:56 AMYou can see here that Primo simply put a back chamber on the omni mics and left the backplate open on the Cardioid mics. They use a simple gasket approach to allow the tailoring of the front to back ratio of the capsule. This is one tweak that can be done to this mics to alter the directional characteristics of this capsule. By tightening the plastic screw on the back of the capsule you can infect control the back venting of the back plate thus control the compliance of the diaphragm. This tweak can allow for more bottom end or less bottom end depending on how "open" the screw is. Chris, this is all great info! When you say 'plastic screw' are you referring to the outer ring with the holes on either side? The two holes kinda remind me of the screw-back watches and their special 'screwdrivers'. The plastic part with the 4 holes in it that unscrews is the part that can be adjusted.
Quote from: Church-Audio on March 10, 2007, 08:33:39 AMQuote from: AudBall on March 10, 2007, 07:26:52 AMQuote from: Church-Audio on March 10, 2007, 02:06:56 AMYou can see here that Primo simply put a back chamber on the omni mics and left the backplate open on the Cardioid mics. They use a simple gasket approach to allow the tailoring of the front to back ratio of the capsule. This is one tweak that can be done to this mics to alter the directional characteristics of this capsule. By tightening the plastic screw on the back of the capsule you can infect control the back venting of the back plate thus control the compliance of the diaphragm. This tweak can allow for more bottom end or less bottom end depending on how "open" the screw is. Chris, this is all great info! When you say 'plastic screw' are you referring to the outer ring with the holes on either side? The two holes kinda remind me of the screw-back watches and their special 'screwdrivers'. The plastic part with the 4 holes in it that unscrews is the part that can be adjusted. Chris, now that you have the pics. Are these caps available from Primo? Part number?
Quote from: ts on March 27, 2007, 08:24:51 AMQuote from: Church-Audio on March 10, 2007, 08:33:39 AMQuote from: AudBall on March 10, 2007, 07:26:52 AMQuote from: Church-Audio on March 10, 2007, 02:06:56 AMYou can see here that Primo simply put a back chamber on the omni mics and left the backplate open on the Cardioid mics. They use a simple gasket approach to allow the tailoring of the front to back ratio of the capsule. This is one tweak that can be done to this mics to alter the directional characteristics of this capsule. By tightening the plastic screw on the back of the capsule you can infect control the back venting of the back plate thus control the compliance of the diaphragm. This tweak can allow for more bottom end or less bottom end depending on how "open" the screw is. Chris, this is all great info! When you say 'plastic screw' are you referring to the outer ring with the holes on either side? The two holes kinda remind me of the screw-back watches and their special 'screwdrivers'. The plastic part with the 4 holes in it that unscrews is the part that can be adjusted. Chris, now that you have the pics. Are these caps available from Primo? Part number?EM-21 The cardioid capsule is the EM-21 the omni capsule is the EM-23 go to http://www.primomic.com/ or Call 1-972.548.9807 you can order the parts direct from them $50- If I remember correctly.Chris
Quote from: Church-Audio on March 27, 2007, 08:35:52 AMQuote from: ts on March 27, 2007, 08:24:51 AMQuote from: Church-Audio on March 10, 2007, 08:33:39 AMQuote from: AudBall on March 10, 2007, 07:26:52 AMQuote from: Church-Audio on March 10, 2007, 02:06:56 AMYou can see here that Primo simply put a back chamber on the omni mics and left the backplate open on the Cardioid mics. They use a simple gasket approach to allow the tailoring of the front to back ratio of the capsule. This is one tweak that can be done to this mics to alter the directional characteristics of this capsule. By tightening the plastic screw on the back of the capsule you can infect control the back venting of the back plate thus control the compliance of the diaphragm. This tweak can allow for more bottom end or less bottom end depending on how "open" the screw is. Chris, this is all great info! When you say 'plastic screw' are you referring to the outer ring with the holes on either side? The two holes kinda remind me of the screw-back watches and their special 'screwdrivers'. The plastic part with the 4 holes in it that unscrews is the part that can be adjusted. Chris, now that you have the pics. Are these caps available from Primo? Part number?EM-21 The cardioid capsule is the EM-21 the omni capsule is the EM-23 go to http://www.primomic.com/ or Call 1-972.548.9807 you can order the parts direct from them $50- If I remember correctly.Chris I think those are the CM300 caps. I'm looking for the CM700 caps. Much smaller. Audball posted pics.
Quote from: ts on March 27, 2007, 08:41:46 AMQuote from: Church-Audio on March 27, 2007, 08:35:52 AMQuote from: ts on March 27, 2007, 08:24:51 AMQuote from: Church-Audio on March 10, 2007, 08:33:39 AMQuote from: AudBall on March 10, 2007, 07:26:52 AMQuote from: Church-Audio on March 10, 2007, 02:06:56 AMYou can see here that Primo simply put a back chamber on the omni mics and left the backplate open on the Cardioid mics. They use a simple gasket approach to allow the tailoring of the front to back ratio of the capsule. This is one tweak that can be done to this mics to alter the directional characteristics of this capsule. By tightening the plastic screw on the back of the capsule you can infect control the back venting of the back plate thus control the compliance of the diaphragm. This tweak can allow for more bottom end or less bottom end depending on how "open" the screw is. Chris, this is all great info! When you say 'plastic screw' are you referring to the outer ring with the holes on either side? The two holes kinda remind me of the screw-back watches and their special 'screwdrivers'. The plastic part with the 4 holes in it that unscrews is the part that can be adjusted. Chris, now that you have the pics. Are these caps available from Primo? Part number?EM-21 The cardioid capsule is the EM-21 the omni capsule is the EM-23 go to http://www.primomic.com/ or Call 1-972.548.9807 you can order the parts direct from them $50- If I remember correctly.Chris I think those are the CM300 caps. I'm looking for the CM700 caps. Much smaller. Audball posted pics.Measure the diameter of the capsule and tell me what it is. I dont have a 700 here. But I am pretty sure they are the same size? or Am I wrong?
I had speculated in another thread that these might be the 700 capshttp://www.primomic.com/products/cm-23b5.htmChris the 700s look kind of like a measurement mic...tapered tips like earthworks...