I have a pair of vintage 1.5” dome midranges from ADS L780/2 speakers. Now I plan to install them in my car. I’ve been wondering whether these drivers can be used without low-pass filter (high frequency cut). Because I believe car environment is different from home environment and the passive crossovers in these complete speaker units may not work well in a car due to the different mounting location. The tweeters and midranges in factory cabinets are located next to each other. But, when they are installed in the car, with reference to my car’s locations, the tweeters are placed on the dashboard facing up towards the windscreen, while the midranges are located at the front bottom corner of the door, close to the kick panel. So, there’s a distance between two drivers.
I observed my another car, 1990 Volvo 760 Turbo Intercooler, it has full audio system from the factory. The dash speakers are tweeters with passive high-pass filter on them. And the front door speakers are coaxial full-range speakers without passive filters.
So, I just wonder if I could build my audio system similar to the Volvo’s, tweeters on the dash with second-order high-pass filter and 1.5” dome midranges on the front doors with only high-pass, without low-pass.
What I’m afraid is the durability of the midranges as they are now responsible for reproducing high frequency. I’m not sure if it will cause problems such as distortion, over temperature, etc.?
Note: the 1.5” dome midranges are equipped with woven soft dome with sticky coating and they utilize ferrofluid for cooling.
I observed my another car, 1990 Volvo 760 Turbo Intercooler, it has full audio system from the factory. The dash speakers are tweeters with passive high-pass filter on them. And the front door speakers are coaxial full-range speakers without passive filters.
So, I just wonder if I could build my audio system similar to the Volvo’s, tweeters on the dash with second-order high-pass filter and 1.5” dome midranges on the front doors with only high-pass, without low-pass.
What I’m afraid is the durability of the midranges as they are now responsible for reproducing high frequency. I’m not sure if it will cause problems such as distortion, over temperature, etc.?
Note: the 1.5” dome midranges are equipped with woven soft dome with sticky coating and they utilize ferrofluid for cooling.
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In brief, will I damage the 1.5” dome midranges by not installing low-pass filters (high cut filter) to them, or treating them as the tweeters?
Your knees or the midranges won't have any problems without a HP on the midranges.
The energy below 650Hz is what will burn them or cause distortion if not filtered.