Hello everybody,
Is there someone who knows how to Crossover use to run this drivers?
I bought the Kit L15 of Seas but I don´t like it.
Thanks in advance,
Iñigo
Is there someone who knows how to Crossover use to run this drivers?
I bought the Kit L15 of Seas but I don´t like it.
Thanks in advance,
Iñigo
A Kit L15 doesn't seem to be listed on the SEAS website. Where did you purchase this kit and did it have a crossover?
The crossover for a 2 way using a hard metal cone is a challenge. The main problem is how to prevent the large resonance being driven to an audible level and to do it in a way that doesn't cause a range of other problems. What don't you like about your current speakers?
The crossover for a 2 way using a hard metal cone is a challenge. The main problem is how to prevent the large resonance being driven to an audible level and to do it in a way that doesn't cause a range of other problems. What don't you like about your current speakers?
The 27TFFC is a fabric dome, not metal, and has a very smooth response, so should be easy to design a crossover for.
I use a pair in my Troels Gravesen-designed SEAS 3-Way Classics. Excellent, balanced sound from these tweeters.
Alex
vs.
Andy is mentioning the woofer and because it's a metal cone driver it is important to deal with the breakup resonance.
But it's a nice compination. Klang&Ton did somethin with the L15 years ago:
Modulo5 PDF
I don't know where you've "bought" this kit since it was free for quite some time and available on Zaphs website - but Zaph did decent job suffocating the resonance. This is measurement of my L15 in 17.6cm wide cabinet with Zaphs xover from your image. Resonance is not an issue here.
Attachments
Last edited:
Yes this is Zaphs crossover. With mild change of values of resistor. Everything else is the same.
I have different crossover because i use different tweeter and approach but with the same goal - flat frequency response and as low resonance of aluminium cone achievable.
But i used my measurements to simulate your (Zaphs) crossover. And it works quite well. If something bothers you i believe it has more to do with the tweeter. I'd try with 5 ohm series and then listen.
I would strongly recommend measuring your current speakers to determine/confirm the issue before making any changes. Mistakes can arise in a significant number of ways.
Perhaps I made a mistake in the crossover construction. I remember that the coils were no identified.
Thanks for your help.
Thanks for your help.
Mine is in bass reflex. Volume is 13 liters, tuned to 45Hz.
https://s1.postimg.org/1op8i0w5pn/Seas_6.jpg https://s1.postimg.org/zvyy069tn/Seas_5.jpg
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
https://s1.postimg.org/1op8i0w5pn/Seas_6.jpg https://s1.postimg.org/zvyy069tn/Seas_5.jpg
Last edited:
1.7mH can hardly be mistaken for 0.05mH coil. Biggest coil is the one in series with midwoofer, smallest coil goes in series with 8.2uF and then shunt with midwoofer.
The middle one is for tweeter.
Last edited:
If you want to push the resonance even more, ad few components. R2 and C2 to be exact. C2 you can make by connecting 47nF and 33nF in parallel. It's quite cheap and brings improvements. It looks like this:
Attachments
Last edited:
Hello
I have two ports bass reflex, 35 mm and 45 mm diameter, witch would you use in 13 litres box? Thanks
I have two ports bass reflex, 35 mm and 45 mm diameter, witch would you use in 13 litres box? Thanks