![]() |
Building Passive Crossovers
OK, so I bought this pair of CDT HD-2BL Hybrid Mid-tweeters. Their frequency response is rated from 250Hz - 20kHz. I contacted CDT about the proper high pass frequency and they recommend 1500Hz at 24dB/Oct.
Now, building a 4th order passive crossover is easy enough, but my question for the audio gurus here is which style?
I never really knew the differences between these and I'm hoping someone here does. |
Here's another source for that kind of help. diyAudio
|
Or why not look into Harrison Labs FMods, and do your crossover in the pre-amplified stage, where amplifier energy is not wasted.....
|
Quote:
|
you can google it... They are inline crossovers that plug into your rcas, and the x over point chosen stays a constant, unlike in a passive setup, which fluctuates with the impedance of the driver while playing. Because it is done pre-amplified signal, there is no wasted power. Passive xovers burn energy filtering an already amplified signal, so you lose a slight amount of power when using them.
Also..... I am running a set of CDT ES-02's which also show a freq range of 250 - 20hz... They recommend crossing at a higher freq for power handling purposes. I have crossed mine as low as 500hz at 100 watts, and had no issues with them. |
I think they are like $25 a pair. Hell, I may have a set in the garage.... If they are the right freq Ill send em to you. Been YEARS since I had them in one of my cars.
|
Good to know. Thanks. I will probably go this route.
|
Quote:
|
1 Attachment(s)
found 2 sets..... just have to check the Harrison website to see what freq they are... I'll let you know. Leaving for tonight, gotta go set off some 4th of july fun!
|
just checked... the black lettered one is 1000hz LOW pass,
the red lettered is 100hz HIGH pass. The black set you could use for your midbass/subs, but you will need a 1000hz high pass for your cdts. |
Many thanks friend.
|
I planned on just letting the woofers roll off naturally. I am going to order a set of these though. Hope they ship quick.
|
Is 1000Hz hp going to be high enough with only a 12dB/oct slope? CDT told me 1500 @ 24. I was almost inclined to get the 2500Hz.
|
Depends on the power you put in them...they are listed to go as low as 150hz, but not at rated power. I personally think 1000 is still too high, because your missing out on the lower midrange freq. That these speakers love.
I currently run mine at 630 with 100 watts, and they perform quite well. |
I'm only going to be hitting mine with 60 watts each.
|
All times are GMT -5. The time now is 01:48 AM. |
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2