This project is going to take a long time, but I've given it a huge amount of thought, on and off for the past few years. I've designed many a theoretical possibility with Visaton drivers, but even though they're very good, and I've had really good experience with them, I want to give something else a try. Something with maybe slightly lower Q, I don't know. But what I do know is that I want to base the speakers on < 6" drivers. I can't seem to find properties I like of the W130S, and I don't like the FR or price of the Visaton aluminum drivers.
I want to keep with the MTM I've enjoyed so much. I've looked at many drivers, and I really like the CSS 7", but for MTM, they're a little big, and they're > 6" anyway. So it was a choice between Wavecor 4 3/4 paper drivers and 5 3/4 glass fiber drivers. The 4 3/4 paper cone has a dip in the FR between 1 and 2 kHz, and that won't do for me. So after all that, I've decided to design with:
MTM
Wavecore WF146WA06
Peerless DX25TG59-04
Does anyone know, firstly, anything about the Wavecor drivers, and whether they're any good (especially for $80 each), and then more importantly, that Peerless tweeter? I like the FR because the tweeter crossover will usually level it off nicely. I want to make it a 50L vented box.
I'm thinking of crossing over at 2 kHz, but I'll figure out the exacy frequency when I've had more time to see how far spaced the drivers will be.
I want to keep with the MTM I've enjoyed so much. I've looked at many drivers, and I really like the CSS 7", but for MTM, they're a little big, and they're > 6" anyway. So it was a choice between Wavecor 4 3/4 paper drivers and 5 3/4 glass fiber drivers. The 4 3/4 paper cone has a dip in the FR between 1 and 2 kHz, and that won't do for me. So after all that, I've decided to design with:
MTM
Wavecore WF146WA06
Peerless DX25TG59-04
Does anyone know, firstly, anything about the Wavecor drivers, and whether they're any good (especially for $80 each), and then more importantly, that Peerless tweeter? I like the FR because the tweeter crossover will usually level it off nicely. I want to make it a 50L vented box.
I'm thinking of crossing over at 2 kHz, but I'll figure out the exacy frequency when I've had more time to see how far spaced the drivers will be.
I think I've got a starting point in the design. I just don't know the phase data for the tweeter. I traced the curves to get impedance and FR. I like the small bump around 1.5 kHz - from past experience, this sounds good to me. Otherwise, it's looking ok for a start, I think.
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I've used a few of Wavecor's cheaper (pressed steel frame) small drivers - they're excellent: flat response, efficient & easy to cross over, and work well in a smallish box. 50L is way too large, low bass extension is not one of their strong points. I'm currently using the WF146WA01s in 20 L, tuned in the mid 40s.
I kinda don't care about bas extension, as I'm planning a small 2.1 system but I need a relatively cheap bass/mid and I have my eyes on the WF146WA06. Your measurements looks quite alright.
I got very caught up in my astronomy, it being winter and all, and then I blew some money on an eyepiece. This is on the cards for the future, but I agree a 50L enclosure is likely too big. Perhaps 40L or so might be better - I'll investigate it. In MTM, Vbox must double, so 50L means each driver gets 25L (IIRC).