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Multi-Way Conventional loudspeakers with crossovers

first 2 way build
first 2 way build
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Old 7th December 2018, 01:43 PM   #1
sumoldeananas is offline sumoldeananas
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Join Date: Nov 2018
Default first 2 way build

Hello, getting started with Diy, trying to build a 2 way system with dayton audio drivers, using:

DC28F-8 1-1/8'' Silk Dome Tweeter
Dayton Audio DC160-8 6-1/2" Classic Woofer

I was trying to at least get the crossover covered by someone who knows the correct direction instead of just relying on diy articles on the web.

I will be testing the speakers with a tpa3116 little amp that should do 30/35w at 8ohm and my yamaha receiver rx v357 that should do 100w at 8ohm with a min 6ohm impedance. My questions are, would they be able to handle the speakers and is the crossover schematic i made decent enough for a first try?

Thanks in advance
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Old 7th December 2018, 04:48 PM   #2
Lojzek is offline Lojzek  Croatia
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You can scrap the design and start all over again, best to build classix 2 kit speakers. I think that you ought to choose another midwoofer, something a little better than dc 160.
"Immer wenn du denkst es geht nicht mehr, kommt irgendwo ein Lichtlein her."
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Old 10th December 2018, 06:44 PM   #3
Dave Bullet is offline Dave Bullet  New Zealand
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Location: Wellington, New Zealand
L-pads are normally to the right (after) the crossover.

Unsure why you have a 2mH inductor in parallel with the tweeter. Normally for a 2nd order electrical the parallel inductor would be in the 0.25mh - 0.6mH range

I don't think your tweeter will be happy < 2KHz crossover. I'd recommend >= 2.5KHz at least 4th order acoustic slope.

Where did you get your driver FRD/ZMA files from? I'm interested in whether you've applied baffle diffraction and step compensation and if so, whether you re-extracted minimum phase before modeling

If you are working off extracted (not measured) responses and phase - have you entered the voice coil offset of the woofer - assuming you are designing on-axis with the tweeter?

What is your enclosure size / type (vented / sealed) and tuning?
"Usual diyaudio train wreck of dubious drivers and just the crossover to sort out. Well, how are you on crossovers and modelling? Pretty green, I reckon" - system7 (Steve)
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Old 12th December 2018, 02:18 PM   #4
sumoldeananas is offline sumoldeananas
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Join Date: Nov 2018
Heya, thanks for the feedback. The classix ii are a great option.

The inductor increased a bit the frequency response on the crossover point for a flatter curve.
Files were from the manufacturer's website.
No speaker box optimization other than trying to get to manufacturer's recommended box size for a vented box at this stage.
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