Horn lens composed of a combination of horn throat and lens. It uses a hyperbolic plate (slant plate) designed based on precise calculation and is used at 800 Hz or higher. The lens part has a plate bent into a 45 ° wave shape to shorten the depth. The horn to be connected is a square exponential horn and the driver is 5 cm in diameter.

2011年7月14日 · I'm thinking about a coax CD playing through a JBL 2390 horn lens. The idea is to smooth response in general and disperse the high frequencies. The JBL document shows pretty good dispersal of 10K. This would be for home use. The only report I found cautions against beaming with coax CDs (BMS 4590 for example).

The JBL 2390 is a folded-plate acoustic lens for use above 800 Hz. Sensitivity is 107 dB. The horizontal pattern is IOOP The lens is backed up by a 300 mm (12 in) rectangular expo- nential horn.

ホーンスロートとレンズを組み合わせた構成のホーンレンズ。 厳密な計算に基づいて設計された双曲線状のプレート (スラントプレート)を採用しており、800Hz以上で使用します。 レンズ …

For Sale by original owner: 2 vintage JBL 2440 drivers (16 ohm) with 2309 horn and 2310 lens sets (the horns and lens were originally catalogued and sold as a unit: JBL 2390). These unites have been tested and preform as expected. Both are enclosed in custom heavy duty road cases. The drivers are equipped with JBL phenolic diaphragms.

JBL models 2392, 2393, and 2394 are valuable additions to JBL’s family of Bi-Radial® horns, providing uniform coverage control over the bandwidth of 300 Hz to above 3 kHz, allowing precise control of critical vocal range energy. These large format horns provide extremely low distortion at typical peak sound pressure levels of

2024年12月3日 · Reproduction JBL 2310 (Reproduction JBL 2390 Lens) BLACK Anodizing - 2 Pcs (Sets). - JBL 1950’s SPEAKERBADGE (EMBLEM) - BLACK/BRUSHED - 2 Pcs. Precise machining with the highest technology laser. All specially made.

JBL Vintage Horn model 2390 Horn + Lens 22’’ model 2310 (Pair) ->The price indicated is for the pair ->These are Horns & Lens JBL are in good condition of course due to age they have scratches here and the

ハーツフィールドに使われた537-509（HL89）ホーンレン ズのプロバージョンです。 こちらはレンズが黒色になります。 全体に目立つほどのキズや汚れは見当たら ず綺麗な状態です。 レンズ部分はアルミの板金なのですが、変形もほぼ見られず一枚一枚の羽も均等に並んでいます。 表面の微細なハゲは所々見られますが、全 体には充分奇麗だと思います。 2" ドライバーの2440と組み合わせ て鳴らしましたが、通常の音量であれば500Hzクロスで充分ホーンロードもか …

2018年11月7日 · The JBL 2390 is a folded-plate acoustic lens for use above 800 Hz. Sensitivity is 107 dB. The horizontal pattern is I00 degree. The lens (2309) is backed up by a 300 mm (12 in) rectangular exponential horn (2310). The 45 degree vertical dispersion pattern is closely. controlled by the shape of the horn.