Quote:
Originally Posted by RL18
Nice video! Maybe if I get a good deal I'll try out the underseats. Biggest issue with the underseats is feeding them the right power and sending them a frequency range that they play well. I'd be willing to bet the bavsounds are decent but your logic 7 system probably is sending it frequencies it can't play well. For example my grs underseat woofers had a frequency range of 25-2000hz, I found that feeding them 25-400hz gave me the best output, anything outside of that there was distortion or I had to detune my eq settings in my dsp to get a good sound out of them. Those bimmertech tweeters look exactly like the GRS tweeters I had originally tried in my system. I personally think they sounded just as bad as the stock speakers and I really had to detune them in my dsp to get a sound out of them that wasn't ear piercing. Which is why I recommend going with these tweeters: https://www.crutchfield.com/p_108R37...TX.html?tp=107
They will fill out the sound a whole lot more and sound way more natural. Those bimmertechs probably have the same 6db per octave high pass filter at 8,000hz. Those infinity tweeters will play all the way down to 2500hz before they hit their filter. |
I am not an expert, but this is just my theory when it comes to these subs.
The stock subwoofers are actually "mid woofers", and the Logic 7 headunit has an EQ that starts at 100hz, and a good subwoofer is supposed to hit as low as 20hz. Later tonight I will also check the Bowers EQ in my X6M to see what is the lowest frequency available, but I suspect it is probably the same 100hz. So the stock subwoofers probably do not really hit frequencies below 100hz.
The interesting part, is when if I were to adjust bass or EQ setting with the Logic 7 or the Bowers subs, it adjust properly and you can immediately hear the difference with every notch of adjustment. With Bavsound subs, adjusting EQ settings does almost nothing - I could drop 100-200-300hz frequencies all the way down, and there is very little difference if any - no reduction of bass whatsoever. When I had the Bavsound subs installed, I used to adjust bass setting almost to the minimum, and even then there was an overwhelming presence of muddy, unbalanced bass. So I theorize that Bavsound boosted low bass frequencies at the expense of mid bass frequencies, since it is almost impossible to get both out of such shallow woofer.
Also, the Bavsound subs are "one size fits all" - they offer the same subs for every BMW model with every possible audio system. The Bowers subs are really an evolution of previous high end systems such as the Logic 7, and so they are better balanced to the system.
I wish I could also swap in the Bowers amp, since all it takes is digital signal through an optic cable, but it needs to be coded in and thats probably impossible to do due to the ECU differences.