Horn type tweeter provided with an elliptical opening. Phase characteristics and amplitude-frequency characteristics are exactly flattened by the combination of an elliptic aperture exponential horn and phasing plug. The phase relationship with the woofer is considered to be equal when the baffle is mounted.

2005年6月23日 · The third model offered by JBL was the 076. There was also a Pro variant offered, the 2403 in alnico and the 2403H in ferrite. It was originally designed specifically for the L220. It uses a unique diaphragm. I believe that it has a moving mass that is between the 075 and 077. The final model offered by JBL was the 2404H.

Horn type tweeter that employs an elliptical horn. The 2403 has an elliptical opening to improve directional characteristics. The design also takes into consideration the phase characteristics when installing the baffle. The mounting hole is 8.1 cm common to 2402, 2403 and 2405.

楕円ホーンを採用したホーン型トゥイーター。 2403は開口部が楕円形状となっており、指向特性を改善しています。また、バッフル取付時の位相特性を考慮した設計となっています。 取付穴は2402、2403、2405共通で8.1cmとなっています。

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Later there was the ferrite 2405H. This model has the lightest diaphragm and offers the widest dispersion pattern and produces the highest frequencies. The third model offered by JBL was the 076. There was also a Pro variant offered, the 2403 in alnico and the 2403H in ferrite. It was originally designed specifically for the L220.

4676B-2 pair of 4676B-1 two-way systems (OBS) NOTE: All Theater System orders require assembly and should include a copy of JBL Tech Note: “Cinema Sound System Manual”.

今回は経験上最初からJBLネットワークの定数を迷わず採用。 問題は中域2426Hのハイカットに4333、4344のどちらの定数を使うか迷うところで、実際に試聴すると雰囲気は相当違ってくる。