I've been tweaking crossover networks of ADS L1590/2 speakers.
First, let me explain the reason for this modification. The sound character of these speakers tends to lean towards bright, opened midrange and, some people describe it as a little bass-shy. For me, I consider them to be too pale though. The objective is to gain more bass and tame the midrange.
Since each speaker is about 42kg in weight, I didn't pick them to the measurement. I just use simulation of the crossover instead, along with reading "tweaking crossovers without measurement" thread.
Okay, here is the simulation result of the original crossover. As you can see, there's definitely a spike on the upper midrange, around 1.5-3.5 kHz, as depicted in red circle.
I started tweaking by adding single resistors to tweeter and midrange circuits and lowering low-pass filter of the woofers. This is aimed to reduce midrange and tweeter levels.
Next, I move to tame the midrange spike. I performed by adjusting the low-pass's capacitor of the midrange. From 15uF to 37uF, the response curve has now become flat.
Here I have some questions.
1) According to the online calculator, the original 15uF and 0.4mH filter gives Q of 1.162, whereas the modified 37uF and 0.4mH gives Q of 1.825. Both Qs are considered to be quite high. So, will it cause any problems, e.g., impedance issue?
2) Will it cause problem from using the 37uF for low-pass of the midrange in which it's larger than 33uF of the high-pass's section?
First, let me explain the reason for this modification. The sound character of these speakers tends to lean towards bright, opened midrange and, some people describe it as a little bass-shy. For me, I consider them to be too pale though. The objective is to gain more bass and tame the midrange.
Since each speaker is about 42kg in weight, I didn't pick them to the measurement. I just use simulation of the crossover instead, along with reading "tweaking crossovers without measurement" thread.
Okay, here is the simulation result of the original crossover. As you can see, there's definitely a spike on the upper midrange, around 1.5-3.5 kHz, as depicted in red circle.
I started tweaking by adding single resistors to tweeter and midrange circuits and lowering low-pass filter of the woofers. This is aimed to reduce midrange and tweeter levels.
Next, I move to tame the midrange spike. I performed by adjusting the low-pass's capacitor of the midrange. From 15uF to 37uF, the response curve has now become flat.
Here I have some questions.
1) According to the online calculator, the original 15uF and 0.4mH filter gives Q of 1.162, whereas the modified 37uF and 0.4mH gives Q of 1.825. Both Qs are considered to be quite high. So, will it cause any problems, e.g., impedance issue?
2) Will it cause problem from using the 37uF for low-pass of the midrange in which it's larger than 33uF of the high-pass's section?
