Quote:
Originally Posted by indio22
Last weekend I made a budget upgrade to my 2014 BRZ audio system. The aim was to get more bass. I installed a more powerful 4 channel amp in place of the rear amp, along with a 10" subwoofer. Channels 1 & 2 of the amp power the stock door speakers. Channels 3 & 4 of the amp are bridged and power the subwoofer.
The amp has variable crossovers (either Low Pass or High Pass) for channels 1/2 and 3/4. I set the 3/4 crossover to Low Pass around 90hz. So it allows 90hz and lower to the sub.
My question - how should I set the crossover for the 1/2 channels going to the stock door speakers? Which of the following two options A or B would be recommended?:
A) Set crossover to High Pass, only letting frequencies over say 100hz to the door speakers. This would allow the door speakers to focus on the upper/mid bass, without getting lower frequency distortion. The down side is - door speakers would get all upper frequencies, which they are not meant to handle.
B) Set crossover to Low Pass, only letting frequencies under 200hz or so to the door speakers. This would prevent the high frequencies from going to the door speakers. Downside is - it would allow the very low frequencies also to hit the door speakers. And those low frequencies are better handled by the sub.
Options A and B seem to have pluses/minuses. Is one recommended over the other?
There is also "option C" possible. Set door speaker high pass to 100hz or so, and buy a choke to install inline, to prevent the higher frequencies from reaching the door speakers. Would that be worthwhile?
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Can you explain to us what kind of audio signals you have coming into the amplifier? And can you show us a picture of your amplifier, specifically a picture of the crossover/filter set switches or dials? (or list the brand and model of it so that we can try and figure out the best set up for you in your case). You may be able to work something out if you can make some pre-amp crossover adjustments and if your head unit has the correct type of filtering.
Right now, I see only problems arising without the use of some sort of band-pass set up on your door speakers, which CAN be done IF planned out and set up properly. It took me quite a while to weigh the pros and cons of my set up and even longer to actually find the right equipment to make it work, but I did finally make it work (technically, I am STILL making it work as my project is on hold for the moment). See some of my posts about it from last year.