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Whelen 扬声器 SA315P分类有几种结构
发布时间:2020-11-04   点击次数:50次

Whelen 扬声器 SA315P分类有几种结构

Happy Halloween! There is no better time than October to learn about Whelen’s funeral lighting past.

Urning the Automotive Market

In 1953, George W Whelen III began modifying his revolutionary aircraft beacon for use with aut. Back then, it was very common in small towns for the funeral director’s hearse to also be used as the ambulance. Therefore, many of Whelen’s first automotive products were installed on hearses.

In the Spirit of Excellent Engineering

Whelen began to design and engineer lighting for funeral processions about 25 years ago when several states began requiring escort vehicles to use purple lights. A funeral director from Maryland contacted us directly asking for lights for his hearses. We begin developing purple lenses and domes for our most popular and easiest to install products, including our Responder® Cadet™, Dash-King 2000 ™, and Mini Edge®. All our purple products featured white LEDs and purple lenses and domes.

A Dead Giveaway

The first time Whelen showcased our purple products was at the National Funeral Directors Association (NFDA) conference in Boston, MA. The Whelen booth was so busy that it was impossible to step away and explore the show. We handed out purple bumper stickers that said, “Whelen puts the FUN back in FUNERAL.” We’re dying to see if anyone out there has one of these bumper stickers.

The Spirit of Whelen Funeral Lights

While the popularity and demand for funeral lights were short-lived due to changing laws, you can still find purple Whelen lights in several states. Have you seen any where you live? Let us know on social media.

Have a safe and healthy Halloween!

The Whelen Archives explores and celebrates our rich heritage and innovations. Learn more about our history 

 


一:书架式扬声器
关于书架式扬声器的使用,只要和落地式扬声器进行比较就可以清楚它的定位了,例如在聆听距离上,书架式扬声器需要更靠近的距离,大约在2-3米以内,同时书架式扬声器所能够还原出来的声音能量一般,在聆听一些较为复杂和多编制的音乐时,声音的能量感和细节就会出现质量下降,另外书架式的扬声器主要采用二路分音的设计,所以在低频的表现上并没有落地式扬声器那般来得扎实有力.

二:落地式扬声器Whelen 扬声器 SA315P
落地式扬声器一般采用了较多的发声单元,因此在使用上更适合在面积较大的空间中摆放,而且观众的聆听位置与扬声器之间的距离可保持在5米以内,不仅能够充分感受到扬声器所带来的规模感和声音力量,声音的定位感和细节表现也更为出色.另外落地式扬声器拥有更大的低音单元,在低频的瞬态反应速度和低频质量上也是其他扬声器产品所不能比拟的,大部分的落地式扬声器都会采用三路分音的方式进行设计,因此在连接性能、声音重放上有更为细腻耐听的表现.
 
三:挂壁式扬声器Whelen 扬声器 SA315P
这里所说的挂壁式扬声器,其实由两个部分组成部分就是那些专门搭配高清平板电视所使用的SoundBar设备.这类产品可以通过依附着平板电视来搭载一个迷你型的环绕声系统,由于其外形小巧和低调沉稳的造型,十分适合那些面积在10平方米以内的视听空间使用,例如客厅、小书房、卧室等等地方.同时挂壁式扬声器也有另外一种形态,就是卫星环绕扬声器,这类产品以小巧的外形而著称,体积也就一个拳头般大,可以适合安装悬挂在墙壁上.这两类产品最大的区别,就是前者可以安装多个不同的发声单元,而后者则多数采用两个或一个发声单元.这两种挂壁式扬声器都拥有一个共同的特点,那就是在低频的还原上有着一定的缺陷,因为在购买这类产品时,商家一般都会搭配一个超低音扬声器进行套装销售,用以弥补低频声音的不足.这类产品也是最多影音爱好者选用的客厅影院配置方式.Whelen 扬声器 SA315P     

Whelen 扬声器 SA315P分类有几种结构

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