harmonicanick
2309 posts
Oct 25, 2015
10:03 AM
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Just bought one of these, sounds great..
Any information on this item made in Buchanan, Mich USA
I think it's a drum mic, Hi-Z Dynamic
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Kingley
3951 posts
Oct 25, 2015
11:01 AM
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I can see why you'd think it's a drum mic, but it isn't.
Here's the lowdown on it and a link to the Electro Voice data sheet is at the bottom of the page.
Ev 638
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Thievin' Heathen
621 posts
Oct 25, 2015
11:36 AM
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I Googled it..,
Description: The E-V 638 was manufactured in the '60s by Electro-Voice, Inc., Buchanan, Michigan, USA.
It was the successor of the famous E-V Model 605.
Its frequency response is especially recommended for SSB voice communications. It was also sold from Heathkit as Model HDP-21A, (Hi-Z).
Specifications
Generating Element: Moving coil, dynamic
Frequency Response: 70 to 10,000 Hz
Polar Pattern: Omnidirectional
Impedance: 150 ohms or Hi-Z model
Output Level: Hi-Z - 150 ohms - -57 dB below 1 volt per µbar
-57 dB below 1 mW per 10 µbar
Diaphragm: E-V Acoustalloy
Sensitivity Rating: Hi-Z - 150 ohms, -153 dB
-151 dB
Case Material: Chrome plated die-cast zinc
Mounting: Standard 5/8" -27 thread
Desk Stand, PTT: Model 428 (423A Base / Switch Riser)
Maximum Switch Current: 1 Ampere
Maximum Switch Voltage: 125V AC or DC
Material: Die-cast zinc and plastic
Dimensions w/ microphone: 10" high x 5-1/8" base diameter
Net Weight w/ microphone: 1-3/4 lbs.
I believe it's a Ham Radio mic. I think I have a 603, but it's always been too hot for any of my amps. They have a following in the harmonica community.
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harmonicanick
2310 posts
Oct 25, 2015
11:57 AM
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Thanks for the info:)
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Pistolcat
890 posts
Oct 26, 2015
6:28 AM
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David Barrett has got them on the front of some of his books... http://www.amazon.com/gp/aw/d/0786661089/ref=pd_aw_sim_14_2?ie=UTF8&dpID=51PabqFHq3L&dpSrc=sims&preST=_AC_UL100_SR100%2C100_&refRID=0W5CBCCGFNZQ7WEDSYJ3
I have one. They look really cool, like a prop from "war of the worlds". That 50:s futuristic vibe. Sound really good, too. Massive bottom end.
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Pistolkatt - Pistolkatts youtube
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TetonJohn
277 posts
Oct 26, 2015
7:53 AM
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That's a good harp microphone. I got one years ago from Tom Ellis (Tom's Mics in Texas). I have a list (not with me) of my preferred mike with certain amps -- I know the 638 is preferred with one of them -- sorry can't tell you which. It is a bit like a small bullet, so pretty easy to hold.
Last Edited by TetonJohn on Oct 26, 2015 7:55 AM
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harmonicanick
2311 posts
Oct 26, 2015
12:06 PM
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Thanks Pistol and Teton,
Will see what the feedback situation is on wednesday when I play it thro' my FBJ
Does look different, in fact I part exchanged my retro rocket for it because I never use that rubbish mic (imho)
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