Hello guys,
when simulating different enclosure types with my driver, i endet with a stubbed horn now.
I got the Space for it in my car (roughly about 200l), and since it is a van, i guess my roomgain to start relatively low. My main goal was to have a as flat as possible frequency response down to ~20Hz.
Since i have no experience at all in building subwoofers or any other hifi components, i got some questions:
Thanks for the help 🙂
Benni
when simulating different enclosure types with my driver, i endet with a stubbed horn now.
I got the Space for it in my car (roughly about 200l), and since it is a van, i guess my roomgain to start relatively low. My main goal was to have a as flat as possible frequency response down to ~20Hz.
Since i have no experience at all in building subwoofers or any other hifi components, i got some questions:
- First... will this be a usable subwoofer? What do you think about it?
- could i use it WHITOUT any high/lowpass filters, just the way it is now? (Excursion is ok at my amps max power)
- does it make sense, to use a subwoofer up to like 200Hz, like it would be in this case?
- how would the crossover for it work? At wich frequency should i crossover, and how would that work with the delays/phaseshifts in the upper frequency?
Thanks for the help 🙂
Benni
For car use, model in 1/4 PI space. Even then, Horn design assumes that the mouth isn't "loaded", and that's not the case for in-car use, where the horn is firing into a closed cabin.
Note also that the response of your design drops like a rock from 30 Hz to 20 Hz. Cabin gain is going to give some of that back, but it's not going to give you back the >20 dB required to flatten the response between those two frequencies.
If you're looking to get the most from one driver, I suggest looking at a TH design or one of the various Paraflex designs. Me, I'd probably go with an offset TL design and use more than one driver for better bandwidth.
Note also that the response of your design drops like a rock from 30 Hz to 20 Hz. Cabin gain is going to give some of that back, but it's not going to give you back the >20 dB required to flatten the response between those two frequencies.
If you're looking to get the most from one driver, I suggest looking at a TH design or one of the various Paraflex designs. Me, I'd probably go with an offset TL design and use more than one driver for better bandwidth.