Thank you so very much Dave! I'm going to get working on placing the components in the enclosures. While I was waiting, I went ahead and installed some nice satin nickle binding posts.
Again, thanks and I'll let you all know how it turns out!
It's better to know what you are doing 
These are links which explain, how to measure an inductance :
How to Measure Inductance
Untitled
A sound generator is your PC. You can use the Winisd generator or this one (Better)
You need a mini jack to connect the circuit to PC. I like the resonant method, simple and easy, use a RL//C circuit as written. R is to protect the output amplifier.
These are links which explain, how to measure an inductance :
How to Measure Inductance
Untitled
A sound generator is your PC. You can use the Winisd generator
or this one (Better)You need a mini jack to connect the circuit to PC. I like the resonant method, simple and easy, use a RL//C circuit as written. R is to protect the output amplifier.
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As I'm sitting here doing some XO research and sipping my coffee, I'm just wondering where this crossover design of Dave's is putting my drivers at.
The iron-core inductor that Dave asked me to use is I believe 18awg and reads 0.47 ohms. Now I don't think that's the same as DCR, but if you go by that reading "as" the DCR, the inductor should be in the neighborhood of 5.5mH.
Does any of this make sense or am I way out in left field? LOL
The iron-core inductor that Dave asked me to use is I believe 18awg and reads 0.47 ohms. Now I don't think that's the same as DCR, but if you go by that reading "as" the DCR, the inductor should be in the neighborhood of 5.5mH.
Does any of this make sense or am I way out in left field? LOL
Awfully hard to guess the inductance from the wire guage & the DCR. Using that you could get an estimate of length (say +/- 20%), then you have to wrap it on the former, estimate the number of turns, layers, length, characteristics of the core.
To know the exact inductance you need to measure.
If it is 5-6 mH then your XO will be in the neighborhood of 300Hz. Exact depends on the actual impedance of the drivers.
One of the beauties of a series XO is that it is self-adjusting. You might need to tweak values to get the area of the XO right but one driver is always handing over to the next driver at the "right" place.
Just put it togther and start listening and start playing. Make sure you have all your alligator clips in place.
dave
Alligator clips? Nah, I had to do it the hazardous way of just twisting the wires together. It's only temporary until I get the right components to do things right.
As for the sound, it's not half bad. At first it seemed pretty bad with just one channel running (just to see if it even worked). After confirming that it was properly wired, I wired up the second one and hooked it up. I've been running them for about the past two hours now and they've seemed to open up some and "thicken up" if you will. There seems to be a little bit of a gap between the Vifa and Fostex but I think that might just be because the 3 ohm resistor I'm using on the Fostex isn't enough. Those little FE103E's are a bit louder than the Vifa's. In order to compensate I have boosted the bass up a little which seems to have helped. They still tend to sound like they have a little too much treble at times though.
I just need to get an idea on the proper components to get to get these guys really singing. Of course, building quality enclosures later down the road is a must but these will do for now.
I have these connected to my little secondary system right now. Anyway, here's a few pics.
As for the sound, it's not half bad. At first it seemed pretty bad with just one channel running (just to see if it even worked). After confirming that it was properly wired, I wired up the second one and hooked it up. I've been running them for about the past two hours now and they've seemed to open up some and "thicken up" if you will. There seems to be a little bit of a gap between the Vifa and Fostex but I think that might just be because the 3 ohm resistor I'm using on the Fostex isn't enough. Those little FE103E's are a bit louder than the Vifa's. In order to compensate I have boosted the bass up a little which seems to have helped. They still tend to sound like they have a little too much treble at times though.
I just need to get an idea on the proper components to get to get these guys really singing. Of course, building quality enclosures later down the road is a must but these will do for now.
I have these connected to my little secondary system right now. Anyway, here's a few pics.
Stole the grills off of my AR S-40's, drilled some matching small holes on the Vifa/Fostex baffles, and mounted the grills!
Believe it or not, it actually helped with the sound a little! In fact, it helped quite a bit! I could easily live with them this way if I had to. Plus they look better now.
Believe it or not, it actually helped with the sound a little! In fact, it helped quite a bit! I could easily live with them this way if I had to. Plus they look better now.
Thanks Jeff.
The TT on the right is a Luxman PD277 running an Adcom HC-VDH II cart, the one on the right is a Denon DP-55K with a Grace G-707 MkII and Benz Micro Ace SH cart.
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