Hello,
i am looking for suggestions about crossover frequencies for my already good speakers. The drivers are seas excel W26fx001, w15ch001 and t29cf002 tweeter. Now i have them crossed at 180hz and 1980hz all LR 48db/oct and i am very happy. These days and because of the covid-19 virus i thought to play a little with the cross frequencies. The crossover is implemented using SHARC processor (IIR for the filters and FIR for driver EQ and phase correction)so any change is quite easy to implement. What do you suggest that i should try to change? Maybe going the high cross even lower? or the low cross higher? The high cross can't go higher because the 3rd harmonic of the midrange driver so it can only go lower - i think the tweeter can go lower for example at 1500Hz -48db/oct, can't it?
i am looking for suggestions about crossover frequencies for my already good speakers. The drivers are seas excel W26fx001, w15ch001 and t29cf002 tweeter. Now i have them crossed at 180hz and 1980hz all LR 48db/oct and i am very happy. These days and because of the covid-19 virus i thought to play a little with the cross frequencies. The crossover is implemented using SHARC processor (IIR for the filters and FIR for driver EQ and phase correction)so any change is quite easy to implement. What do you suggest that i should try to change? Maybe going the high cross even lower? or the low cross higher? The high cross can't go higher because the 3rd harmonic of the midrange driver so it can only go lower - i think the tweeter can go lower for example at 1500Hz -48db/oct, can't it?
Yes you can just be careful. 48db slope gives you more protection for the tweeter. Off angle response my benefit more than on axis.
We do not know what the design aim was of the original and how it measures. The good news is that it sounds good.
Before you touch anything make sure you have a back up of your current settings, so you can be 100% sure of getting back to good.
Oldmanaudio's point about of angle response is one to keep track of along with overall power response, and distortion that's more than enough parameters to keep you occupied for some time I guess.
What were the design criteria that led to the choice of drivers, bass reflex, sealed mid etc?
Before you touch anything make sure you have a back up of your current settings, so you can be 100% sure of getting back to good.
Oldmanaudio's point about of angle response is one to keep track of along with overall power response, and distortion that's more than enough parameters to keep you occupied for some time I guess.
What were the design criteria that led to the choice of drivers, bass reflex, sealed mid etc?
Imo it's worth to try a higher woofer-mid crossover point to get a little more help and dynamic for the lower-midrange. The W26 can go higher than 180 Hz, that's almost sure, maybe up to 3-400 Hz or even higher. The W15 is a small driver, good for pure midrange duty. Anyway, if you don't like it higher, you can go back every time.
yes thats what i thought too , try to cross the bass driver higher. My design is not new, here you can see the speakers and they measurements: My new minisharc dsp audio preamplifier/crossover project
This is a closed enclosure design. At the begining they had an analog crossover, then two versions of analog active crossovers and now a digital one.
Just thought if i can make them even better. Of course i have already saved the current configuration file. 🙂
so you suggesting going the lower cross higher to 300-400hz? Do you think there will be any diference? Yes, the w15 is a small 5inch driver so the big one (10") should do better at those frequencies?
This is a closed enclosure design. At the begining they had an analog crossover, then two versions of analog active crossovers and now a digital one.
Just thought if i can make them even better. Of course i have already saved the current configuration file. 🙂
so you suggesting going the lower cross higher to 300-400hz? Do you think there will be any diference? Yes, the w15 is a small 5inch driver so the big one (10") should do better at those frequencies?
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Yes, I think you get less strained sound with lower distortions and a more dynamic presentation if the woofer-mid cross goes higher, 400 Hz is a good starting point imo. The W26 is a very good driver even up to 800 Hz or so.
I saw you post on the 'pad I think. I have the L26 and L15 and 27TDFC. I cross these at 220 / 2300.. 2300 is too high for the L15/W15 IMHO due to distortion. I am passively crossing so changes are a little more cumbersome. I agree with crossing the w26 higher... and possibly lowering the mid/tweeter. I think an optimal XO point would be ~ 1700Hz if you are truly using 8th order slopes. should provide plenty of tweeter protection. I always thought though the steeper the slope, the more obvious the driver transition... I don't have any data to back up my hunch.