ericn
Temp
Balance Engineer
Posts: 14,817
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Post by ericn on Jan 2, 2018 21:41:07 GMT -6
Both those Tang Ban look like Audax clones, very popular in the day. Don't know Silver Flute, TB & SB very consistent!
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Post by BenjaminAshlin on Mar 20, 2018 1:53:07 GMT -6
How is this project coming along?
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Post by svart on Mar 22, 2018 6:14:15 GMT -6
How is this project coming along? I can't remember the last time I worked on it! I think I redid the crossover again, but haven't tried it. I'll have to pull it back up and take a look sometime soon.
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Post by BenjaminAshlin on Apr 3, 2018 3:55:29 GMT -6
How is this project coming along? I can't remember the last time I worked on it! I think I redid the crossover again, but haven't tried it. I'll have to pull it back up and take a look sometime soon. Sounds good. Love to hear how they turn out. I am currently working on a 3 way design as well.
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Post by svart on Jan 8, 2019 15:14:24 GMT -6
So my other 3 way monitor thread is mostly about available options out in the world and someone asked me about this project..
Well, I just hadn't really felt like messing with it. The simulations weren't adding up and I was not getting the results that the sims were and it was really draining my resolve on finishing the speakers. More money, more time, etc.
However, reading about new monitors might have sparked my interest a little.. I might try DSP based crossovers instead! Looks like I could get into the DSP and a few class-D amps for less than 200$ a speaker.
I'd certainly try one first and see if it's possible to do what I want..
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Post by BenjaminAshlin on Jan 22, 2019 4:16:26 GMT -6
So my other 3 way monitor thread is mostly about available options out in the world and someone asked me about this project.. Well, I just hadn't really felt like messing with it. The simulations weren't adding up and I was not getting the results that the sims were and it was really draining my resolve on finishing the speakers. More money, more time, etc. However, reading about new monitors might have sparked my interest a little.. I might try DSP based crossovers instead! Looks like I could get into the DSP and a few class-D amps for less than 200$ a speaker. I'd certainly try one first and see if it's possible to do what I want.. Hi Svart, I am still working on my 3way. I am currently using ADAU1702 for the crossover/FIR. I have been unable to find a reasonably priced solution with good ADDA, soy plan is to eventually design a ADAU1452 board with quality AD/DA but digital signal design is somewhat outside of my current skill set. The analog devices software is a bit clunky but fairly fast for prototyping. The beauty with DSP is the ease with which you can tweak crossovers, delay drivers and create FIR. Of course you would already know this, but in practice it makes designing a lot of fun. (Provided the weather is fine for outdoor measurements.) Anyway keep us up to date. I am keen to see what you come up with. Cheers, Ben
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Post by svart on Feb 8, 2019 12:45:20 GMT -6
So my other 3 way monitor thread is mostly about available options out in the world and someone asked me about this project.. Well, I just hadn't really felt like messing with it. The simulations weren't adding up and I was not getting the results that the sims were and it was really draining my resolve on finishing the speakers. More money, more time, etc. However, reading about new monitors might have sparked my interest a little.. I might try DSP based crossovers instead! Looks like I could get into the DSP and a few class-D amps for less than 200$ a speaker. I'd certainly try one first and see if it's possible to do what I want.. Hi Svart, I am still working on my 3way. I am currently using ADAU1702 for the crossover/FIR. I have been unable to find a reasonably priced solution with good ADDA, soy plan is to eventually design a ADAU1452 board with quality AD/DA but digital signal design is somewhat outside of my current skill set. The analog devices software is a bit clunky but fairly fast for prototyping. The beauty with DSP is the ease with which you can tweak crossovers, delay drivers and create FIR. Of course you would already know this, but in practice it makes designing a lot of fun. (Provided the weather is fine for outdoor measurements.) Anyway keep us up to date. I am keen to see what you come up with. Cheers, Ben I like the idea of using the 1701 series for a quick prototype. I've found a class-D chipset, the TPA3250 that would work. I really love the idea of being able to tweak very narrow frequency issues. It's very hard to do so with passive filters as they become too lossy and the impedances change too much over frequency. I need to create a better setup for sweep testing. I've been trying to do it in my control room but it's a pain to keep moving speakers around in there. I need to set up my laptop for testing in my dead room I think.
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Post by BenjaminAshlin on Feb 10, 2019 19:48:58 GMT -6
Hi Svart, I am still working on my 3way. I am currently using ADAU1702 for the crossover/FIR. I have been unable to find a reasonably priced solution with good ADDA, soy plan is to eventually design a ADAU1452 board with quality AD/DA but digital signal design is somewhat outside of my current skill set. The analog devices software is a bit clunky but fairly fast for prototyping. The beauty with DSP is the ease with which you can tweak crossovers, delay drivers and create FIR. Of course you would already know this, but in practice it makes designing a lot of fun. (Provided the weather is fine for outdoor measurements.) Anyway keep us up to date. I am keen to see what you come up with. Cheers, Ben I like the idea of using the 1701 series for a quick prototype. I've found a class-D chipset, the TPA3250 that would work. I really love the idea of being able to tweak very narrow frequency issues. It's very hard to do so with passive filters as they become too lossy and the impedances change too much over frequency. I need to create a better setup for sweep testing. I've been trying to do it in my control room but it's a pain to keep moving speakers around in there. I need to set up my laptop for testing in my dead room I think. The only problem with class D is they are normally measured at 10% THD+N. So in reality you have to way over spec them to have clean power delivered. For testing Im using some sure STA516BE amps. My test setup is a laptop, Focusrite 2i2 and Audix TM1. In the backyard with the speaker lifted off the ground pointed up. Ground plane could be an option if my backyard was larger.
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