This project will be my demonstration at this year’s Lone Star Audio Fest. I strongly suggest that if you are able to make the trip to Dallas for the show April 30 and May 1, you do so. There will be many DIY and cottage manufacture project to hear. Please come.
I have been playing with low XO 2-way systems (OK – FAST) for a couple of years now. All have been sat-sub system, but this one is all in one box. The bass cabinet is a standard MLTL loaded with the Audax HM210C0 and tuned to 32Hz. The mid-tweet is the Scan Speak 10F8424G0 is loaded into a piece of 4” PVC pipe. The pipe is open and stuffed. The XO is Harsch style at 300Hz implemented in a nanoDIGI.
The cabinets are fresh out of glue-up. They still need to be routed around the edges and of course they will get a nice veneer finish. However, I wanted to confirm that the performance would match modeling. Here are some graphs:
First an iPhone pic of one of the cabinets. The first set of graphs are of one cabinet 0.5m on the tweeter axis. The second set of graphs are at the listening chair 2.5m back, the speakers 2.5m apart and square with the walls. Therefore, the microphone is 30* off axis and slightly above the tweeter.
All of this was quick-and-dirty. Took me ~1hr to run the tests. I still have to finish the cabinets, break in the drivers and play with the stuffing, so I expect the final results to be somewhat better. I will dial in the XO and EQ for the speakers at 0.5m with the PEQ of the individual channels, then when I get to my room in Dallas, I’ll EQ the room with the input PEQ.
I must say that my initial listening impression is positive. These speakers are very clean and crisp. Rock solid image and overall nice sound. One thing I will do in the final adjustments is not compensate for the 10F’s rising response on axis. That made the top end rather dull and lifeless. Yes, I could point the speakers at the listening chair, but that severely reduces the size of the sweet spot.
Bob
I have been playing with low XO 2-way systems (OK – FAST) for a couple of years now. All have been sat-sub system, but this one is all in one box. The bass cabinet is a standard MLTL loaded with the Audax HM210C0 and tuned to 32Hz. The mid-tweet is the Scan Speak 10F8424G0 is loaded into a piece of 4” PVC pipe. The pipe is open and stuffed. The XO is Harsch style at 300Hz implemented in a nanoDIGI.
The cabinets are fresh out of glue-up. They still need to be routed around the edges and of course they will get a nice veneer finish. However, I wanted to confirm that the performance would match modeling. Here are some graphs:
First an iPhone pic of one of the cabinets. The first set of graphs are of one cabinet 0.5m on the tweeter axis. The second set of graphs are at the listening chair 2.5m back, the speakers 2.5m apart and square with the walls. Therefore, the microphone is 30* off axis and slightly above the tweeter.
All of this was quick-and-dirty. Took me ~1hr to run the tests. I still have to finish the cabinets, break in the drivers and play with the stuffing, so I expect the final results to be somewhat better. I will dial in the XO and EQ for the speakers at 0.5m with the PEQ of the individual channels, then when I get to my room in Dallas, I’ll EQ the room with the input PEQ.
I must say that my initial listening impression is positive. These speakers are very clean and crisp. Rock solid image and overall nice sound. One thing I will do in the final adjustments is not compensate for the 10F’s rising response on axis. That made the top end rather dull and lifeless. Yes, I could point the speakers at the listening chair, but that severely reduces the size of the sweet spot.
Bob