Richard Gresham Posted April 19, 2023 Share Posted April 19, 2023 (edited) Item Condition: Very Good Shipping Options: Pickup available and you can audition.,Shipping is available at agreed cost. Suburb or Town: Tennyson State: QLD Payment Method: PayPal, EFT, Cash Reason for selling: NLR Further Information: Acoustic Research Model AR-LST Speakers. CIRCA 1972 & top of the model line up. Simply a fantastic pair of vintage cult classics up for offer. All drivers in excellent original condition. Woofers recently refurbished with in spec foams by “Brisbane Speaker Repair” while “Speaker bug” performed internal component service including the replacement of two capacitors only. These speakers are in very nice overall original condition. Timber cabinets present exceptionally well with only minor surface flaws. All cabinet edges are excellent. Fabric has mild discolouration but very nice condition for age. Refurbished with the intent to keep these speakers in the best original condition as tribute to their heritage & rarity. As these speakers weigh 40kg each I would prefer to sell locally in SE Qld but can arrange Australia wide shipping, with professional packaging by Pack and Send. (Quote can be supplied in advance if required.) Demo is available at Tennyson (4105 Qld). More info and specs below: The Acoustic Research Laboratory Standard Transducer (AR-LST) is designed for those laboratory and commercial applications that require conveniently repeatable, accurately known spectral energy profiles, including one flat profile extending from 30Hz to 20 kHz. The AR LST uses a 12” acoustic suspension woofer, four 1 1/2-inch mid-range hemispherical radiators and four 3/4 inch hemispherical tweeters. Acoustic Research´s LST speaker system was the company´s most advanced speaker system. Most striking are the LST´s angled sides, differentiating this pair from all other AR speakers*. The AR-LST uses the same drivers as the AR-3a. Not only is each speaker equipped with the 3a´s 12 inch woofer, but with four of its midrange speakers and four of its tweeters and has therefor a significantly higher power handling capability. The LST´s output energy can be controlled with a rotary switch on the front panel, allowing six different energy levels or Spectral Energy Profiles. (*An AR-LST 2 was launched later in the 70’s and used the same cabinet design but had a 10’ woofer and a lower number of mids & tweeters.) Lots of reviews of the AR- LST on line. Specifications Type: 3 way, 9 driver loudspeaker system Crossover Frequency: 575 & 5000Hz Impedance: 4Ω Sensitivity: 89.5dB Bass: 1 x 12" Midrange: 4 x 1.5" hemispherical Tweeter: 4 x 0.75" hemispherical Dimensions: 689 x 508 x 248mm Weight: 40.5kg Edited April 19, 2023 by Richard Gresham Changed photo order. 7 4 Link to comment Share on other sites More sharing options...
curtankerous Posted April 19, 2023 Share Posted April 19, 2023 So cool! What a fantastic effort the maintain these 50 year old speakers in such original condition. All the best with the sale. 2 Link to comment Share on other sites More sharing options...
expat Posted April 21, 2023 Share Posted April 21, 2023 Awesome speakers but need some grunt to drive. Had them for 15 years. Great job getting them refurbished. GLWTS 1 Link to comment Share on other sites More sharing options...
Recommended Posts