A pair of AMT tweeters that I removed from some ESS tempest lab series 2 speakers. They have some rust on the front, and one of them was loose in the frame, so I took the old glue off and repotted it with electronics grade RTV 162. They both measure well and sound good with music using my 1000hz test crossover. Please look at the pictures and ask any questions before bidding. This is a great pair to play with at a low price.

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

I don’t know what model these came out of, but they are the plastic frame used in the Tempest Lab series among others. Nominal 8 ohm, measure 5.2 and 5.7. Sound good with music through a crossover. One has some surface rust but works great. Please look at all the pictures and ask any questions before bidding.

I don’t know what model these came out of, but they are the plastic frame used in the Tempest Lab series among others. Nominal 8 ohm, measure 5.2 and 5.7. Sound good with music through a crossover. One has some surface rust but works great. Please look at all the pictures and ask any questions before bidding.

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

I don’t know what model these came out of, but they are the plastic frame used in the Tempest Lab series among others. Nominal 8 ohm, measure 5.2 and 5.7. Sound good with music through a crossover. One has some surface rust but works great. Please look at all the pictures and ask any questions before bidding.

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

For purchase is a pair of original 4ohm ESS amt tweeter diaphragms of the Kapton variety. ESS has not made Kapton diaphragms available for a very long time. This diaphragm pair has unique power and heat handling characteristics due to its membrane substrate material. Transparent goldish in color, these have been gently used, are extremely rare, and come with no restrictive netting. These 689-1107 membranes fit all of the larger amt tweeters, including amt1a / 1b / 1c / 1d / amt monitor / amt1am, and all of their bookshelf variants. Due to this pair being of the 4ohm variety, they would not be appropriate for early ESS builds such as the amt1a, which use a dividing network designed for 6 ohm membranes. Kapton membranes allow for a longer life span due to their higher heat handling, at full rated power input. Original Heil air motion diaphragms from ESS of Sacramento. I typically ship within 36 hrs of completed payment. Thank you for looking.

Nice set - out of ESS AMT Speakers. All tested and work great. Have crossovers to match if interested in another listing.

Here are a pair of the Great Heil Tweeters in very good condition... Sold as pairs so you are buying 2 Heil tweeters. Will ship USA and some other Countries. Please message me for the location.. Thanks for looking.Items are being sold As IS and with No Returns Accepted

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

1.5 inch Professional Tweeter Speaker Transducer HiFi AMT Ribbon Tweeter Features: Brand new and high quality Strong Neodymium magnet system. High heat temperature resistant. High temperature material of diaphragm. Low distortion factor. Amplitude frequency response. Broad frequency response. High linear impedance. Design for Hi-Fi,Studio,Multimedia. Specifications: Model:AMT-40 Ribbon material:Kapton+Aluminum Ribbon mass:0.3g Netweight:59g Rating impedance:4ohm±15% DCR:3.6ohm±15% Freq.response range:3KHz~33KHz Sensitivity:90dB±3db Power handling:10W Max Power:20W Recommended X-over:Situation 3KHz-4KHz Out dimension:040x20mm Package Includes: 1 x 1.5 inch Tweeter Speaker Unit note: No retail package. Please allow 0-1cm error due to manual measurement. plz make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

For sale is an excellent working ESS AMT 1B tweeter that works excellent with some minor cosmetic wear please see pics. This ESS tweeter sounds amazing! No shipping to Alaska, Hawaii and Puerto Rico. You will receive everything you see in the pictures, if it is not pictured then its not included. All items have a hidden invisible security mark. Please view pictures and ask any questions you might have. Have a nice day!

For consideration is a pair of small ESS amt tweeters from Performance Series cabinets. Original Heil air motion drivers from ESS of Sacramento, in great condition. They measure 6.2 on my Fluke. Rectangle mount, face dimensions are 3.5 x 4.5 and require a 2.75 x 3.25 opening to install. These are factory PS 820 and PS 920 ESS tweeters, fitment will be exact if these are the cabinet types you intend to use them with. I usually ship within 36 hrs of completed payment. Thank you for looking.

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!

Ess Amt 1a, cassa singola: tweeter di Heil assente, woofer da riconare e ribordare, passivo da ribordare, cabinet buono, crossover con comandi presente.

VINTAGE PAIR ESS AMT 1eM Heil AIR MOTION TWEETERS SPEAKERS WORKINGOn Jun-15-23 at 04:33:33 PDT, seller added the following information: NOTE SHIPPING WEIGHT IS OFF PLEASE WEIGHT FOR RIGHT SHIPPING QUOTE

Ess Amt 1a, cassa singola: tweeter di Heil assente, woofer da riconare e ribordare, passivo da ribordare, cabinet buono, crossover con comandi presente.

Ess Amt 1a, cassa singola: tweeter di Heil assente, woofer da riconare e ribordare, passivo da ribordare, cabinet buono, crossover con comandi presente.

Below is a list of the drivers and crossovers taken from a pair of ESS Classic Bookshelf speakers from the 70s. There are AMT Ribbon Tweeters and 10 woofers all in single separate auctions. All tested good. No cabinets. Tweeters and 2-way crossovers are auctioned and packed together. Woofers have the original rubber surrounds. Look in my store under Speaker Parts and Repair. The item for sale in this auction is highlighted. One complete speaker is shown in one of the last pictures. It is not included - for reference only. Mounting screws included: #1 - ESS AMT Ribbon Tweeter w 2/Way Crossover #2 - ESS AMT Ribbon Tweeter w 2/Way Crossover #1 - 10 ESS Woofer #2 - 10 ESS Woofer Thanks for bidding!