I ordered 2.2uF caps instead of 2.0uF. These are Solen with a 5% tolerance (2.09-2.31) and that is out of range. This is for my MBOW1 project: http://murphyblaster.com/content.php?f=MBOW1.html
Will this be a problem? I'm going to assemble the XO anyway and if anyone thinks it is a problem, I'll order the proper 2.0 uF.
Will this be a problem? I'm going to assemble the XO anyway and if anyone thinks it is a problem, I'll order the proper 2.0 uF.
If that's the cap being used in the LC series combo in the parallel woofer leg, I wouldn't worry too much. The tolerancing of the relevant driver parameters probably swamps that small error. If you want to be anal about it, you'll need to trim all the xover values for your particular drivers anyway. And if you're not anal about it, why worry, eh?
You can simply add a 200nF in parallel, and theoretically the compound capacitor will sound better.
🙂 sreten.
🙂 sreten.
Who me...anal? Thanks, I'll just leave it alone. I've been listening to Bose 601s for the last 22-yrs. I'm sure they'll sound just fine.
jeff
jeff
I did the math and you are correct. However, I'm sure you're joking because it would be cheaper to just buy two more2uF caps. One 22uF would be about twice the cost of two 2uF doh indeed!
eStatic said:
Just as a test, let's try the following.
If I take an 8 ohm speaker, resistive, and add a 2 uF capacitor which is 8 ohms at 10,000 Hz, how far down will my response be at 10,000 Hz?
If I take the same speaker and add a 2.2 uF capacitor at 10,000 Hz, how much farther down will my response be? Considerably less than a single dB, I am sure.
I realize that we are dealing with a more complex crossover here, but I think that might be indicative of what little difference it might make.
If I take an 8 ohm speaker, resistive, and add a 2 uF capacitor which is 8 ohms at 10,000 Hz, how far down will my response be at 10,000 Hz?
If I take the same speaker and add a 2.2 uF capacitor at 10,000 Hz, how much farther down will my response be? Considerably less than a single dB, I am sure.
I realize that we are dealing with a more complex crossover here, but I think that might be indicative of what little difference it might make.
Since two of them were only $3.92, I ordered two 2uF. I'm placing another order with PE anyway. Hey sreten, I guess I am anal.
jh
jh
JH, I didn't mention the a-word, us Brits aren't like that.
I'm stiil wondering how you intend to filter the bass end
of the MBOW1's though.
🙂 sreten.
I'm stiil wondering how you intend to filter the bass end
of the MBOW1's though.
🙂 sreten.
Sorry, it was Sy. As for bass, I'm just going to use two subs as stands. I hope the XO on the sub amp will allow me to make the adjustments I need or else I've p!$$ed away over $300. I'm sure you're going to tell me I'm a bloody fool (you Brits still say that, don't you?);-)
Since we're all chatty over this XO for the MBOW1, I have another rookie question. On the low pass can I just twist the 30ohm and 10ohm resistors together along with the 1.25mH and 1mH inductors...or should I connect them to a segment of wire as they appear on the XO?
JH
JH
No, just IMO you'll only need one subwoofer for that arrangement.
And the speakers will sound better on quality stands than a box.
(The famous LS3/5A mini-monitor has a stand cum extra bass box,
but the diehard fans use the speaker on stands with the box)
http://home.freeuk.com/pwhatton/lstips.html
🙂 sreten.
And the speakers will sound better on quality stands than a box.
(The famous LS3/5A mini-monitor has a stand cum extra bass box,
but the diehard fans use the speaker on stands with the box)
http://home.freeuk.com/pwhatton/lstips.html
🙂 sreten.
Jhovis said:
All the components should be hard wired together point
to point avoiding any additional wire or solder joints.
🙂 sreten.
sreten,
Thanks, you've been a very reliable font of information. BTW, I was in Castle Combe, England last spring and won a karting endurance race. My co-drivers were from England and Italy. We trounced the rest of the field. Afterward, we went back into the village to the pub and drank ale from our victory cup! I lodged at the Manor House which is the nicest place I've ever had the priviledge to stay.
jeff
Thanks, you've been a very reliable font of information. BTW, I was in Castle Combe, England last spring and won a karting endurance race. My co-drivers were from England and Italy. We trounced the rest of the field. Afterward, we went back into the village to the pub and drank ale from our victory cup! I lodged at the Manor House which is the nicest place I've ever had the priviledge to stay.
jeff
Jhovis said:
Just call or write whoever sold you the caps and tell them what happened. My guess is you can return the 2.2's for replacement.
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