Bass reflex enclosure designed for 46 cm units. It has the same dimensions as the 4508 and is designed for bass and sub-woofer in SR systems.

JBL 4518 Bass Reflex for single 18" Driver, 8 cubic foot vented enclosure, tuned to 30 Hz, and designed for sound reinforcement low frequency and subwoofer applications. 39 3/4 high, 26-1/2 wide, 17 1/4 deep

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4518 Bass Reflex For Single480 mm (18 in) Driver The 4518 is a 225 L (8 cu ft) vented enclosure, tuned to 30 Hz, and designed for sound reinforcement low frequency and subwoofer applications. 4550BKA Front Loading Dual Driver.

46cmユニット用に設計されたバスレフ型エンクロージャー。 4508と同じ寸法となっており、SRシステムの低音用やサブウーファー用に設計されています。

JBL 4518 Bass Reflex for single 18" Driver, 8 cubic foot vented enclosure, tuned to 30 Hz, and designed for sound reinforcement low frequency and subwoofer applications. This is a very capable passive subwoofer from JBL in the 1980's, capable of tremendous bass in both residential and commercial applications.

Looking for a used, new, second-hand or ex-hire 4518? We may be able to help. Click here to see if we can help you find it. 4518 Bass Reflex For Single480 mm (18 in) Driver The 4518 is a 225 L (8 cu ft) vented enclosure, tuned to 30 Hz, and designed for sound reinforcement low frequency and subwoofer applications.

1 天前 · 该系列音箱灵敏度都在90分贝上下。 所以，听音声压都在30DB-50DB左右。 如果房间比较大音箱距离比较远。 通常听音声压也就是50DB左右。 所以功放的功率选择，RMS输出 30W的功放足以。 实际转播车里面也不可能使用250W X 2的低效率功放。 如果您是听音声压在90DB左右，那么功放就要RMS输出 200W以上。 要有充足的余量来应付瞬态电流。 但是个人认为经常超过80DB使用是44系列小箱子的损坏的原因，因为毕竟44系列小箱子设计不是为了80DB以上使 …

Enclosure for single woofer. It uses a bass reflex system. A 46 cm diameter unit can be used for the unit.

Used JBL Professional Model 4518