1 Vintage ESS Heil Air Motion AMT Crossover Monitor Speakers 70s Sn 2249 1 of 2 This is a working crossover This is for the one scene in the pictures serial number 2249 We have two available but if you just need one for a replacement here it is Were very communicative if you need any more pictures or have any questions please ask we pack well and ship quickly with tracking Thank you

1- ORIGINAL ESS RIBBON DIAPHRAGM - Original factory ESS partESS 689-1106 Heil Ribbon DiaphragmSpecs:Dimensions: 1 5/8? x 2 15/16? (41.28mm x 74.68mm)Replacement diaphragm for AMT-5, Tempest Lab series 3 and more SEE PHOTO MONEY BACK GUARANTEE IF items NOT AS ADVERTISED!!! SHIPPING $5.00 TO THE US (48 STATES) - INCLUDES TRACKING AND INSURANCE See my feedbacks!! Bid with confidence!!

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 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.

Quando si ordina dagli Stati Uniti, i pacchi possono essere soggetti a tasse di importazione e dazi doganali, che lacqirente è tenuto a pagare.ESS Heil AMT-1D 1985 Noce Altoparlante (1 Unità) - 2 Vie AltoparlanteQuesto foglio informativo sul prodotto è stato originariamente stilato in lingua inglese. Si prega di consultare appresso una traduzione automatica dello stesso in lingua italiani. Per ogni domanda, si invita cortesemente a contattarci.1 solo altoparlantegioca alla grande in ottime condizioniSpecificheTipo: sistema di altoparlanti a 2 vie, 3 driverRisposta in frequenza: da 35Hz a 23kHzGestione della potenza: 400 W Frequenza di crossover: 800Hz Impedenza: 6? Sensibilità: 91 dB Radiatore basso: cono da 305 mmBassi: cono in bextrene da 305 mmTweeter: trasformatore di movimento dellaria HeilGriglia: panno nero/marroneFinitura: impiallacciato noce oliatoDimensioni: 895 x 413 x 413 mm1 solo altoparlante gioca alla grande in ottime condizioni Specifiche Tipo: sistema di altoparlanti a 2 vie, 3 driver Risposta in frequenza: da 35Hz a 23kHz Gestione della potenza: 400 W  Frequenza di crossover: 800Hz  Impedenza: 6?  Sensibilità: 91 dB  Radiatore basso: cono da 305 mm Bassi: cono in bextrene da 305 mm Tweeter: trasformatore di movimento dellaria Heil Griglia: panno nero/marrone Finitura: impiallacciato noce oliato Dimensioni: 895 x 413 x 413 mm Bundle Description PAIR MPN Does Not Apply Brand ESS Non-Domestic Product No UPC Does not apply Custom Bundle Yes Model AMT 1A