Sure, if they are the right value for the crossover frequency you want.
Designing passive crossovers is fairly complex because the drivers are forming one leg of a frequency dependant impedance ladder attenuator with the crossover components, and the drivers impedance varies with frequency due to a number of factors, the dominant properties affecting impedance being the driver's fundamental resonance and the voice coil's self-inductance (which happens to be frequency dependant just to make it trickier).
Simple 'off the shelf' crossovers are designed as though the drivers are pure resistances, which is never the case. Real drivers have many electrical and mechanical properties that are represented in the Thiele-Small parameters used for modelling their behaviour. Whether an 'off the shelf' crossover produces a satisfactory result is pot-luck.
Designing passive crossovers is fairly complex because the drivers are forming one leg of a frequency dependant impedance ladder attenuator with the crossover components, and the drivers impedance varies with frequency due to a number of factors, the dominant properties affecting impedance being the driver's fundamental resonance and the voice coil's self-inductance (which happens to be frequency dependant just to make it trickier).
Simple 'off the shelf' crossovers are designed as though the drivers are pure resistances, which is never the case. Real drivers have many electrical and mechanical properties that are represented in the Thiele-Small parameters used for modelling their behaviour. Whether an 'off the shelf' crossover produces a satisfactory result is pot-luck.
Anything from 800 to 2K works fine
Depends on size of your baffle, but assume the typical step in the response to be around 300/600
or baffle step.
Cross over is designed to have slight dip in response to compensate for baffle step.
Anyways with crossover around 1k and intentional dip for baffle.
Easy again with simple 1st order.
Simulate with most krap coil possible, 8 ohm DCR LOL
with normal DCR of 5 to 6 ohms you will be fine.
Simple 5 inch speaker for 10 to 20 watts you dont need 40 to 100 dollar crossover coils.
Depends on size of your baffle, but assume the typical step in the response to be around 300/600
or baffle step.
Cross over is designed to have slight dip in response to compensate for baffle step.
Anyways with crossover around 1k and intentional dip for baffle.
Easy again with simple 1st order.
Simulate with most krap coil possible, 8 ohm DCR LOL
with normal DCR of 5 to 6 ohms you will be fine.
Simple 5 inch speaker for 10 to 20 watts you dont need 40 to 100 dollar crossover coils.
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I wish i had the knowledge some of you guys have haha..it would have made this endeavor a lot easier...a walk in the park even!! Im not looking for pure listening pleasure so to speak...after all it is a portable Bluetooth style speaker and you will never get that. I just want it so sound "good" for most listening situations and for most parts a simple crossover i think should be mostly adequate i would hope. The one thing i am MOST concerned about is the resistance of the completed crossover as if this doesnt match my 8Ω Aurasound driver then i will end up with a different crossover point from my ''limited" understanding. So this is why i was hoping that the combination of a 16Ω, 12uf cap
http://www.theloudspeakerkit.com/dmpc-12-12uf-250v-polypropylene-capacitorand a 3.5mH Dayton inductor would do the trick.
https://www.wagneronline.com.au/cro...ectronic-components/ic183-5-77172/1000382/pd/
However, as WhiteDragon mentioned earlier, i may be crossing it over too low. He suggested i cross it over at 2kHz which has now confused me a little as you can see in his diagram there is no inductor at all, just a 10uf cap and 12Ω resistor. I say im confused as these drivers should still be ok for 800Hz-1kHz crossover point. Now i kinda dont know what i should do?
So i guess in short, if those above mentioned components will achieve a 8Ω crossover then im happy to purchase the components and build them.
http://www.theloudspeakerkit.com/dmpc-12-12uf-250v-polypropylene-capacitorand a 3.5mH Dayton inductor would do the trick.
https://www.wagneronline.com.au/cro...ectronic-components/ic183-5-77172/1000382/pd/
However, as WhiteDragon mentioned earlier, i may be crossing it over too low. He suggested i cross it over at 2kHz which has now confused me a little as you can see in his diagram there is no inductor at all, just a 10uf cap and 12Ω resistor. I say im confused as these drivers should still be ok for 800Hz-1kHz crossover point. Now i kinda dont know what i should do?
So i guess in short, if those above mentioned components will achieve a 8Ω crossover then im happy to purchase the components and build them.
Splendid reading! I'm stuck in admiration for the knowledge spread ed but... A woofer needs definitely a coil! This has been missed.
Or, as OP said, play with amp tone control, which is a sacrilege!. Multi amping crossover electronic and digital EQ after mic'ing spinorama, does it sound good for a 2 way WAW style? Naaah
Or, as OP said, play with amp tone control, which is a sacrilege!. Multi amping crossover electronic and digital EQ after mic'ing spinorama, does it sound good for a 2 way WAW style? Naaah
I may try and build WhiteDragon second design and see how i go. Also out of curiosity why would it be sacrilege to use tone controls to manage the woofers?
Well, the inductor before the woofer is a must... Basic.. Same as a tweeter with a high pass.
Whitedragon misspelled the 2way, the 2kHz is a typo... BTW I tried some economical 2" and the Whisper Auratone lacks some VHF...
Whitedragon misspelled the 2way, the 2kHz is a typo... BTW I tried some economical 2" and the Whisper Auratone lacks some VHF...
Lots of speakers use crossovers without a coil before the woofer. You want a woofer which rolls-off smoothly, with rising self-impedance. (In effect, "the coil is in the speaker".) You can't do this with those "woofers" which have a rising response in their top octave or it will sing with the tweeter and cloud the image.
Simple high pass 1st order crossover, is capacitor only
2nd order would have cap and inductor.
resistor is fairly straight forward impedance compensation.
ok, well this has been some good reading..and good to know people are out there to help a novice like me. As i said before i will give the above diagram a try and see how the speaker sounds.
i have compiled some sort of a BOM, would it be much of a ask to check to see if they are suitable components? if so i will make the purchase and build these crossovers.
1X
https://speakerbug.com.au/index.php?route=product/product&path=18_46&product_id=5452X
https://speakerbug.com.au/index.php?route=product/product&path=33_27&product_id=1202X
https://speakerbug.com.au/index.php?route=product/product&path=25_28&product_id=155
If these are suitable ill give it a go? Keeping in mind I need the crossover to be suitable for both 8Ω drivers
Thanks
i have compiled some sort of a BOM, would it be much of a ask to check to see if they are suitable components? if so i will make the purchase and build these crossovers.
1X
https://speakerbug.com.au/index.php?route=product/product&path=18_46&product_id=5452X
https://speakerbug.com.au/index.php?route=product/product&path=33_27&product_id=1202X
https://speakerbug.com.au/index.php?route=product/product&path=25_28&product_id=155
If these are suitable ill give it a go? Keeping in mind I need the crossover to be suitable for both 8Ω drivers
Thanks
Hmmm... From a technical POV the HF driver 'needs protection', so no 1st order over 10 W(these little buggers are rated 15W)and the woofer needs BSC, so the coil... Read also the page of yesterday's 'crossover without measuremens' sticky thread in MultiWay forum
i had a bit of a read through that thread and didnt pick up on "protection" for the HF driver. What do you suggest i do for protecting the HF driver? Should i do i second order LW filter?
2nd order should kill LF... When raising the volume the problem occurs. The woofer doesn't mind as the bigger voice coil assembly guarantees more heat disposal.
This is electricity, then comes the acoustical side: a woofer exhibits a 'bell curve' frequency behavior... and if it doesn't have nasty mid-frequency behavior (breaks up), the target might be reached with just an inductor.
Same 'bell' in FR of a tweeter (well, all speakers have their BW limits) but the VC cannot withstand abuse
This is electricity, then comes the acoustical side: a woofer exhibits a 'bell curve' frequency behavior... and if it doesn't have nasty mid-frequency behavior (breaks up), the target might be reached with just an inductor.
Same 'bell' in FR of a tweeter (well, all speakers have their BW limits) but the VC cannot withstand abuse
so will the above design by White dragon be "safe" to use as is? Or do you recommend any specific components be incorporated into his design?
Well, the Aurasound allows some little abuse.
I'm no master in crossovers though they are the heart of a loudspeaker... I mix'n'match components that I have on hand from old speakers.
For example, the 800 Hz HP in the old Kenwood KL 777 speakers was performed by a 22uF series and a 1mH shunt, IIRC
I'm no master in crossovers though they are the heart of a loudspeaker... I mix'n'match components that I have on hand from old speakers.
For example, the 800 Hz HP in the old Kenwood KL 777 speakers was performed by a 22uF series and a 1mH shunt, IIRC
My fault, because the 800 Hz crossover point is defined by the intersection at -3dB of the two 'curves' given by the superimposition of the acoustical responses of the drivers. So no real fixed HP but a balanced operation between drivers.
I use for the Whisper a 33 uF + unknown coil, from an old RCF speaker
filter is the protection.
he is using fullrange 2" for a tweeter with resonant frequency of 200hz
min crossover is 400hz. So 1000 is well above any issue.
This is not a dome or ceramic tweeter with higher resonance.
It is fullrange 2" speaker.
even if crossover was low near resonance, speaker would reach xmax or 10%
distortion way before exceeding thermal rating.
he is using fullrange 2" for a tweeter with resonant frequency of 200hz
min crossover is 400hz. So 1000 is well above any issue.
This is not a dome or ceramic tweeter with higher resonance.
It is fullrange 2" speaker.
even if crossover was low near resonance, speaker would reach xmax or 10%
distortion way before exceeding thermal rating.