ESS Heil Ribbon Diaphragm AMT 10B, AMT 4, AMT 6, HD 12, Factory Part 689-1108 ESS AMT Speaker HEIL Ribbon Diaphragm Part # 689-1108This listing is for one pair or #2 of these itemsOriginal factory ESS partHand folded, USA MadeDouble sidedHEIL Air Motion TransformerDiaphragm: Original Silver Mylar pleated ribbonThis is NOT the generic Mylar version that others sellSize: 1.6875 x 4.6875 (43mm x 119mm)Impedance: 4 ohm, DCR: 3.7 ohmPlease check your model before ordering to make sure you are getting the correct diaphragm.See the Fits Models tab for all applicable cabinet and driver numbers.

ESS (bookshelf model) aluminum bracket set. Fitment of this pair of original brackets (for the larger amt tweeters only) can be flush mount in a cabinet face, or baffle board if you desire. The complete kit available here is not custom made, it is original ESS equipment used in their large bookshelf type loudspeakers. It comes with thin rubber mounting gaskets, 4 L shaped aluminum brackets, and the original stud and nut assy. The brackets are pre drilled to accept all original ESS heil tweeters, with a pass-thru slot for the lead wires. They are also pre-drilled to accommodate face mounting via small-headed wood bolts or, hefty machine screws. I will ship USPS priority within 36 hrs of completed payment. Thank you for looking.

For purchase, a gorgeous set of ESS Heil 4ohm pulp woofers and original passives. The surrounds were just replaced with open cell polyether foam, and the pulp cones are very clean. The radiators are of closed cell design, original to early ESS 12 builds with full 3/4 backings and mass weights. Unique to ONLY early ESS builds, the woofers have 2.5 voice coils wound on anodized formers, unlike every other cast framed offerings from ESS which have 2 voice coils. Also unique to this pair, the backside of the cone base employs a dampener to reduce unwanted harmonic overtones in the upper bass region. Resistance measurements are 3.47 and 3.54 respectively. The rich sonics incorporated in the original lightweight but dense pulp cones, should be considered an essential upgrade to the overall sound of your ESS speakers. Utilized in several models of amt1(x), these are drop-in ready for models such as amt1a, 1b, 1c, 1d, and amt monitor, including all bookshelf variants of those models. These are factory original pulp 12 drivers by ESS of Sacramento, removed from amt1am tower loudspeakers. These drivers were optimized for the specific dividing networks and cabinet offerings that were available during the production years of amt1a, and early amt1am monitor tower builds. Modern replacements (from ESS) are not engineered to be coupled with amt drivers, nor your existing crossover networks where applicable. No testing or sampling has been performed with the new, generic off the shelf woofer drivers provided by ESS, currently. Packing will be very stout, expect these to arrive as advertised. UPS or FedEx will be the carrier, please let me know if you have a shipper preference. As with all of my listings of ESS equipment, if you are looking for parts from that era of long gone builds, feel free to inquire as i will assist with whatever parts i may have inventory of. I will ship within 48 hrs of completed payment. Thank you for looking.

ESSAMT Bookshelf 1a, der Highend-Lautsprecher (2 Stück) in einem sehr guten Zustand, mit geringen Gebrauchsspuren. Leistungskapazität75 Watt kontinuierlich, 350 Watt Spitze geschützt durch Schutzschalter. Nennimpedanz: 6Ohm. Abstrahlwinkel 120° horizontal, 30° vertikal. Übergangsfrequenz: 850 Hz. Gewicht der Magnetbaugruppe 3,36kg unddasGesamtgewichtca.30kg,Bassnenndurchmesser30,48 cm, Neupreis3558 DM. Weitere Informationen im Internet. Privatverkauf, keine Garantie oder Rücknahme. Nur Abholung wegen des Gewichts.

This is a reprint of an Audio Test Review from 1976! You wont be dissapointed! It will have specs, commentary, and a full review of the unit. A piece of Audio History! I have THOUSANDS more Ads and Reviews on my Ebay Store. Email with ANY questions, THANKS! -Search for any brand you like on the left side in my Store Search bar. I have almost every popular Audio brand! -Each Page is 8.5 by 11 -Shipping is $3 in the USA and $6 ANYWHERE else, I ship WORLDWIDE! Each additional item is only $1 more to ship! -As always, your satisfaction is GUARANTEED at Electronics Archives! If you are unhappy with any purchase, email and I will get you a resolution or a refund! -Email me with any questions, I put 10-20 new Ads and Brochures on my site EVERY DAY! THANK YOU! Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.