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.

For sale is a pair of great working ESS AMT 1B radiators with some minor wear, fits all models in the title, please see pics. 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!

One single original ESS Heil AMT 1A speaker badge.Approx 1-15/16 inches wide, 11/16 inches tall. The pins on the back are broken off. Badge will need to be glued in place. No one buys this, its going into the garbage.

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 sale is an excellent working ESS AMT 1B crossover that looks and works great however the knobs could use some cleaning with deoxit as the sound does cut out a little here and there when turning the knobs, overall it sounds and works great however it could use a cleaning to work perfect, please see pics. 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 single (lone) crossover module from an amt1b cabinet. Original Heil air motion 2-way dividing network from ESS of Sacramento, in great condition. Fitment will be exact if you intend to use it to replace your 1b network, and will also be a direct fit for amt1c and amt1d cabinets. The presence and brilliance knobs have gone missing, as photos show. I usually ship within 36 hrs of completed payment. Thank you for looking.

ESS amt 1b Bookshelf Speakers Owners Manual Product Registration Card etc

ESS amt 1b bookshelf owners manual and brochure product registration card etc Original material in new condition.

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!