For a while I've been working on my first design from scratch. It uses the Dayton Neo 3/4" front press fit tweeter with the buyout Hi-Vi A3S-II at parts express in an MTM format. All the details are at my blog ( http://blue-leisure-suit.blogspot.com/ ). I named them the Verios (after the songbird) and am very pleased with the results.
I used 2nd order acoustic slopes and tried to use as few components as possible. I ended up with only 7 per speaker and wht seems to be pretty good performance. The box is just over 2L and tuned to 72Hz. They are only 10"x4-1/4"x6", and I think would work well for an office or bedroom system, with a subwoofer for the lowest octaves.
Comments, and critique would be greatly appreciated.
I used 2nd order acoustic slopes and tried to use as few components as possible. I ended up with only 7 per speaker and wht seems to be pretty good performance. The box is just over 2L and tuned to 72Hz. They are only 10"x4-1/4"x6", and I think would work well for an office or bedroom system, with a subwoofer for the lowest octaves.
Comments, and critique would be greatly appreciated.
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Nice looking speakers Eric. I haven't reviewed your blog yet, but I am wondering if you crossover includes baffle step correction? If not, do you notice the 6 dB drop off?
HELP!
I think they ended up being about $30 per speaker for drivers and x-overs.
BUT I would not build this design yet. I'm having a problem with distortion. At low levels they sound very good but as I turn them up they start producing some crazy levels of midrange distortion.
Can Anyone look at my design and get an Idea of what might be going wrong?
I'm using a pretty decent Yamaha receiver.
I'm stereo mode with the speakers high passed at 90Hz (speakers set to small, my only option) with the low frequency sent to my sub.
I'm using homemade toroidal inductors wound from 17 ga magnet wire on a ferrite toroidal core. Do you think there is any chance they could they be saturating?
I think they ended up being about $30 per speaker for drivers and x-overs.
BUT I would not build this design yet. I'm having a problem with distortion. At low levels they sound very good but as I turn them up they start producing some crazy levels of midrange distortion.
Can Anyone look at my design and get an Idea of what might be going wrong?
I'm using a pretty decent Yamaha receiver.
I'm stereo mode with the speakers high passed at 90Hz (speakers set to small, my only option) with the low frequency sent to my sub.
I'm using homemade toroidal inductors wound from 17 ga magnet wire on a ferrite toroidal core. Do you think there is any chance they could they be saturating?
what size is the inductor core? Yes it is a possibility, especially if the inductor core is small in size. Generally these aren't the best arrangement unless using very large cores and for larger inductor values. Do you have pictures of the inductors?
Hi,
You should not be using toroidal cores (unless you hacksaw an air gap into them).
You will then need a lot more turns but will have much higher saturation current.
🙂/sreten.
edit : apparently there are gapped toroids but there are also
special powdered toroids that effectively distribute the airgap.
why you want to use a core at all I'm not sure :
http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=255-220
You need thicker wire on the bass inductor compared to the treble 0.33mH
You should not be using toroidal cores (unless you hacksaw an air gap into them).
You will then need a lot more turns but will have much higher saturation current.
🙂/sreten.
edit : apparently there are gapped toroids but there are also
special powdered toroids that effectively distribute the airgap.
why you want to use a core at all I'm not sure :
http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=255-220
You need thicker wire on the bass inductor compared to the treble 0.33mH
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