BURMESTER AMBIENCE BA 31是延續AMBIENCE系列中的的BA 71的作品，較小的尺寸更能適應各種小空間的聆聽需求。BA 31為2.5音路低音反射孔設計，除了獨立的高、中音外，以中低音負責低音的工作，在喇叭後側具有一個低音反射孔。
高音為自家有名的AMT(AIR MOTION TRANSFOMER)氣動式高音，採用超輕的振膜和強力的釹磁鐵(NEODYMIUN DRIVE)。在BA 31的背面有一顆相同的AMT高音可以依照聆聽空間和用家口味做調整，稱為全向發聲效果(Optimal omnidirectional sound distribution)，也可以關閉。中音單體和中低音單體皆為6.5英吋的玻璃纖維紙盆。喇叭靈敏度為87dB，平均阻抗為4歐姆，分頻點位於400Hz以及3000Hz，響應頻率38-45.000Hz (±3 dB)，單隻喇叭重量為40.5公斤。
BA 31使用高品質的喇叭連接端子，用家使用大型喇叭線或是香蕉型端子接頭都沒有問題。可以BI-WIRING和BI-AMP，以不同的擴大機連接不同音路。喇叭箱體內部結構堅固，前面板為鋁合金，可選擇銀色、青銅色、黑色或是個別訂製的顏色，MDF木箱部分可選擇高光漆的標準版，或是選配的黑檀木、深色或淺色的胡桃木。
Features:
· 2 ½-way system
· Bassreflex design for a powerful, clean low bass range
· Air Motion Transformer (AMT) with ultra-light diaphragm, super strong neodymium drive,utmost dedication to detail, sonic neutrality and level stability
· Identical ambience tweeter on the rear of the enclosure with level control for individually adjusting the spaciousness of the sound image
· High-quality connection terminal, suitable for massive cable lugs as well as e.g. low-mass hollow banana plugs
· Optional bi-wiring and bi-amping operation to use e.g. different power amps for the low and the high/mid range
· The enclosures with acoustically decoupled aluminium front panels and braced MDF walls add to the low-resonance reproduction of the fundamental range
· The veneer and lacquer finishes in five different versions may be combined with alu front panels in three different colours
Technical specifications:
Structural principle : 2 ½ way, bassreflex
Nominal power handling : 200 W
Sensitivity at 2.83V/1m : 87 dB
Nominal impedance : 4 ohms
Frequency range ±3 dB : 38-45.000 Hz
High-frequency driver : 2 x Air Motion Transformer
Midrange driver : 17cm (6.5 in.) fibreglass paper cone
Low-midrange driver : 17cm (6.5 in.) fibreglass paper cone
Crossover frequencies : 400 Hz / 3000 Hz
Weight (per item) : 40.5 kg (89.4 lbs.)
Dimensions (W x H x D) : 25.3 x 105 x 37.5 cm (10 x 41.3 x 14.8 in.)
