Hello DIY Audio,
I have a set of Behringer truth b3031a active monitors that I no longer listen to (just don't compare with the Continuums IIs). I'm thinking about scavenging the drivers out of them to build a new set of inactive speakers.
Try as I might, I can't find any frequency response data on the web. Before I invest in a mic and teach myself how to take the measurements, I thought I might see if anyone here knows where I can look or maybe even has the data.
And then, what do I do with the plate amps? Moreover, should I even do this...?
Cheers,
Will in Korea
I have a set of Behringer truth b3031a active monitors that I no longer listen to (just don't compare with the Continuums IIs). I'm thinking about scavenging the drivers out of them to build a new set of inactive speakers.
Try as I might, I can't find any frequency response data on the web. Before I invest in a mic and teach myself how to take the measurements, I thought I might see if anyone here knows where I can look or maybe even has the data.
And then, what do I do with the plate amps? Moreover, should I even do this...?
Cheers,
Will in Korea
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The bass driver is definitely not the original one, that looks like the cheapest available alibaba or ebay driver. Which will sound horrible because the crossover doesn't fit at all, the xo makes ~80% of the sound of the speaker!
Measurements of the speaker won't help you in a new project because it's depending on the baffle size and unless you'll use the same width and the same wave guide, it will measure a lot differently.
E: You will have to measure the new speaker anyway.
Why don't you just buy a replacement driver? They are available or it can be reconed, recone kits are available too.
BTW: The bass driver can deliver a lot more volume and cleaner sound if you use a lowcut/subsonic filter @40Hz. But more importantly, the voice coil won't crash into the back pole plate anymore (which destroys the voice coil).
Measurements of the speaker won't help you in a new project because it's depending on the baffle size and unless you'll use the same width and the same wave guide, it will measure a lot differently.
E: You will have to measure the new speaker anyway.
Why don't you just buy a replacement driver? They are available or it can be reconed, recone kits are available too.
BTW: The bass driver can deliver a lot more volume and cleaner sound if you use a lowcut/subsonic filter @40Hz. But more importantly, the voice coil won't crash into the back pole plate anymore (which destroys the voice coil).
Thanks for the response. I forgot to mention that i refoamed the drivers recently. Actually, it was there that's taken me down this diy rabbit hole. So they are the originals. Why i went with red is debatable...
So you're saying I'll have to buy a mic regardless because of the new enclosure.
Not sure how many more speakers I'll build. I know a new mic is going to get stuck in a drawer.
So you're saying I'll have to buy a mic regardless because of the new enclosure.
Not sure how many more speakers I'll build. I know a new mic is going to get stuck in a drawer.
Well, with very much experience you can develop speakers up to a certain level also by ear. Or measure with a mic. If you can't either, you need someone close to you who is willing to help you. You can't calculate a crossover. And if none of that works out for you, your new speaker will become much, much worse than they are right now. Please don't be offended but it's literally the same as "I've got a gearbox from a Ford, I want to put it into my VW bug, I got no tools and no shop, I don't want to spend money on either"