Vintage Pair Acoustic Research AR-10 pi Speakers. Is a new speaker system from Acoustic Research that addresses itself to these considerations. Under actual listening conditions, the AR-10. Delivers as flat an energy response as the state of the art permits. And it is able to maintain this response characteristic under a great variety of conditions of use. The result is a further significant improvement in the degree of realism with which music can be heard in the home. Is a no-compromise 3 way speaker system with excellent dispersion and even energy output all across the audible spectrum. A pair of 3 position switches allows the owner to adjust the mid and high-range drivers to the “liveliness” of the room while the 3-position woofer environmental control allows the owner to adjust the low-end response to speaker placement. This allows the owner to place the speakers on the center of the wall, on the floor against the wall or away from the wall. Low-Frequency: 300 mm 12 in. Mid-Frequency: 38 mm 1-1/2 in. 9 mm 3/4 in. 525 Hz, 5000 Hz. Three 3-position switches for woofer environmental control and for midrange and highrange level control. Nominal, depending on switch positions, highest impedance in. And -6 dB switch positions, lowest in 4. 1 watt will produce 86 dB SPL on axis at 1 meter. 25 watts (into one speaker only) will produce 100 dB SPL in a 3000 cu. Room of average reflectivity (energy absorption coefficient of 0,15), 50 watts (25 watts per channel) will produce 103 dB SPL in the same room. May be used with amplifiers capable of delivering up to 150 watts continuous power per channel being driven to clipping 10 % of the time, on normal music material source. Nominal Power Handing: 100 watts (max, 250). Half-section LC network on each driver using air-core chokes and computer grade bi-polar electrolytic capacitors. Acoustic output of midrange and highrange drivers as well as the normalizing of woofer output for the three basic environments accomplished via an autotransformer and individual switching networks. Woofer 18 Hz (free air), midrange 400 Hz, highrange 400 Hz. System Resonance Frequency: 42 Hz. System Low Frequency Response. 3 db at 35 Hz. Woofer 9800 gauss, midrange 13000 gauss, highrange 14000. 41.9 liters 1.48 cu. 354 x635 x 273 mm deep 13. 15/16 x 25 x 10. Unpacked 24.9 kg 55 lb. Grills are not the original foam ones. New items added every week, so check back often! It is fast and easy. We try and list the items as best that we can but sometimes there are mistakes. 2 There was an error in the listing that greatly affected price. Please, if you have any questions or issues, let us know so we can help resolve them. Auctiva offers Free Image Hosting and Editing. Auctiva gets you noticed! Track Page Views With. Auctiva’s FREE Counter. The item “Vintage Pair Acoustic Research AR-10 pi Speakers” is in sale since Tuesday, August 27, 2019. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Speakers”. The seller is “cardsafterhours” and is located in Morris, Illinois. This item can be shipped to United States.