The JT30 Store
Microphone Replacement Elements
Item Description Quantity Price Cost
Genuine Astatic Crystal Element!!! This is the original Astatic MC-151 element. I am selling a small number of them now. These are authentic MC-151 made by Astatic. Each element is tested before shipping. These fit most bullet style mics including JT-30, T-3, Astatic 200, Shure 707, Shure 520, Turners, American, and similar mics. Some mics require that you trim the rubber gasket or order a specialty gasket from www.harpmicgaskets.com. The back of the element has MC-127 cast into the casing, but Astatic broke the 151 mould so they use the 127 one. There is a paper label with MC-151 on it. No returns after 2 weeks. No returns of soldered elements. I will issue credit only, up to 14 days after purchase if returned element has not been soldered. $ 150.00
Astatic Ceramic Element 1-15/16 inch diameter ceramic element made by Astatic for a CB mic in the 1970s. Made from the same element materials as an MC-127 and sounds very much like the MC-127 and MC-151. It is smaller than the JT-30 element, but you can easily make a mount out of plastic foam packing material that will hold it centered and secure. Very high impedence and very rugged. $ 16.00
Impedance Matching transformer Small transformer fits in almost any mic. Multiplies impedance by 100. Turns a 300 ohm element into 30,000 ohms. Red and green side is high impedance. Green and white wires attach directly to element. Boosts bass response and increases output of weak elements. $ 12.00
Low Impedance Element Low impedance military surplus element. Similar to Shure CR. Might be Shure or EV. Will sound OK with impedance matching transformer above. $ 4.00
Microphone Adapters
Item Description Quantity Price Cost
Amphenol Adapter Switchcraft 1/4 inch to Amphenol 5/8" Mic connection adapter. Back in stock $ 14.50
High Impedance XLR Adapter XLR Adapter with the special wiring for Blues Blaster and newer JT-30 mics. $ 15.00
Microphone Connectors
Item Description Quantity Price Cost
Amphenol type Male Connector (Switchcraft) 5/8" Amphenol type connector for old mics - made by Switchcraft. This is used to add a classic microphone connection to a mic. Use it on home made shells or to repair old mics $ 8.00
Amphenol type Female Cable Connector 5/8" Amphenol type female 2501 type connector for old mics - made by Switchcraft. For making custom mic cords. This is used to make your own mic cable. Cut the end off an old guitar cord, solder this on and you have a microphone cable. Most old radios used by HAM radio operators used this connector. This is the kind most often found in Astatic JT-30 mics, and most Turner mics. $ 8.00
MC2M Male Connector 2 Prong MC2M connector. Use this on a the some Astatic T-3, (Some Shure 540, 545) and older mics that have two holes for the prongs for this connector. Use this to make your own cables. This is the MALE connector that plugs into the bottom of old mics with two offset holes for the cable. $ 16.00
MC2F Female Connector 2 hole MC2F connector. Use this on a the some Astatic and Shure mics that have two prongs for the holes in this connector. Use this to make your own cables. This is the FEMALE connector that plugs into the bottom of old mics that have two offset prongs on the mic. $ 16.00
MC3M Male Connector 3 Prong MC3M connector. Use this on a the Shure 55, 55s, 535, 540, 550, 556, some 708s and older mics that have three holes for the prongs for this connector. Use this to make your own cables. This is the MALE connector that plugs into the bottom of old mics with three offset holes for the cable. $ 16.00
MC3F Female Connector 3 Hole MC3F connector. Use for a variety of old PA mics. Use this to make your own cables. This is the FEMALE connector that has three holes to receive a MC3M type connector. $ 16.00
JT-30 Parts
Item Description Quantity Price Cost
1-meg Military Spec Pot I use these milspec pots when I add a volume control to a mic. They are small enough to fit in almost any microphone and were designed to work, even in the jungles of southeast asia, so they might survive a blues bar. They are 1 meg linear taper and work great with a high impedance element. The shaft is too long and you might have to nip it down to size after you install it. Includes a 1/8 inch shaft knob with a set screw. $ 12.00
JT-30 screws 4-40 by 3/8 replacement screws. Zinc plated. You can get these at any hardware store but for convenience you can add them to your order. Two included. 2 for $1.00 $ 1.00
Misc. Items
Item Description Quantity Price Cost
Crown Royal Bag Crown Royal Bag. Purple Velvet with Yellow drawstring. Perfect for keeping your JT-30 safe from dings and scratches. Or use for your golf clubs. Guitar players use them for their stomp boxes and tuners. Good for polishing furniture, making plush toys and holding coin collections. $ 3.00
Shipping and Total Order
USPS First Class shipping in Continental US only $4.00 for orders under $20. $7.50 orders under $50. $12 for orders under $100 and $15 for orders over $100. (USPS First Class becomes Priority Mail at 11 ounces.) Shipping
Shipping is calculated for US USPS orders only. Use next page to adjust shipping. Items are shipped first class, usually on the next day after the order is received. Orders received by check may take a week while the check clears. Special handling, Insurance, etc. is available for an additional charge.
ORDERS OUTSIDE THE USA: Please for overseas shipping rates.
Total
         

Overseas pays estimated actual cost for box and shipping. We can ship overseas, but please e-mail Erica for a shipping quote. There is a tendency for overseas items to get lost so you must insure items.

The inventory is a cardboard box under the dining room table. Don't ask for quantity discounts because we have only a few of each item on hand at a time.

We are happy to accept returns on new unused items, but shipping is nonrefundable. We can't accept soldered or damaged returned items. Elements are returnable for credit only up to two weeks after sale. After 14 days, no returns on elements.


XLR Microphone adapter for high impedance microphones. Lets you use a standard guitar cord with a newer JT-30. This does not have the matching transformer and is designed for use with High Impedance microphones like the JT-30VC. This eliminates the need for a special cable and allows you to use your JT-30 with a normal Guitar cord.

Microphone adapter for old microphones. Lets you use a standard guitar cord with a JT-30. This is the Switchcraft connector
2501MP Switchcraft connector. This is the amphenol type connector that goes on the bottom of old microphones. It has a 3/8 inch threaded connector which fits (loosely) in the JT-30 shell sold here. If you buy this for the shell, you must drill a tap a hole for a set screw to hold it in place in the shell.
2501F cable connector for making your own guitar cords. This is cheaper than the Switchcraft adapter (but not so cool) Steal a guitar cord from one of the guitar players, cut one end off and solder one of these in place and you get a dedicated microphone cord.

If you need more information or have questions about shipping, call Erica at 1-845-623-4161. Note: Erica does not play harp, knows nothing about microphones and can't answer any technical questions. Use this number for sales and shipping questions only. Need tech help?

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238 Germonds Road
West Nyack, NY 10994