Please correct me if I am wrong here, but from what I can discern , adding a 1uf cap in series, to an 8 ohm driver like this one, will make the crossover frequency (6db rolloff) 20khz, which to me seems to be a bit too high.
Why not go with something like a l.47uf, or 2uf to bring it down a little bit more to within the 10khz to 13500khz range?
Why not go with something like a l.47uf, or 2uf to bring it down a little bit more to within the 10khz to 13500khz range?
Well, a 1uf cap is first order so only rolls off 6dB an octave so even though it starts high, it isn't affecting much right away.
Also , it's a 6 ohm tweeter I believe, which I think means it actually crosses even higher..
However, with the new tweeters that I 'm using, which are a bit more efficient, I find 2uF is just right.
Nelson, those are the tiny ones with the mylar dome? I thought that they were Aiwa? I like them better already..
Also , it's a 6 ohm tweeter I believe, which I think means it actually crosses even higher..
However, with the new tweeters that I 'm using, which are a bit more efficient, I find 2uF is just right.
Nelson, those are the tiny ones with the mylar dome? I thought that they were Aiwa? I like them better already..
Re: I have a cunning plan...
I have just emailed PE for a shipping quote for 2x 290-045 (BOFU) and 2x275-025 (the neo dome tweeters that GYChang used). It came to $76.09, so with VAT added on top (disregarding duty for now) it comes to £75.63. Quite a lot really, but still cheaper than 2x monacor sp200x+shipping+tweeters.
Who else in the UK wants a set of BOFUs? Reckon the S+H would be less per driver if we order more of them, and we can get the PE multi-purchase discount.
James
I have just emailed PE for a shipping quote for 2x 290-045 (BOFU) and 2x275-025 (the neo dome tweeters that GYChang used). It came to $76.09, so with VAT added on top (disregarding duty for now) it comes to £75.63. Quite a lot really, but still cheaper than 2x monacor sp200x+shipping+tweeters.
Who else in the UK wants a set of BOFUs? Reckon the S+H would be less per driver if we order more of them, and we can get the PE multi-purchase discount.
James
Re: Re: I have a cunning plan...
Thats not too bad, considering my order came to about 80 dollars with shipping (though I also purchased some speaker wire and caps, around 70 for raw drivers and tweeters). 75 euros comes out to what, 100 USD? No idea what the current transfer rate isjrevillug said:
I may overemphasize the price thing when discussing the BOFU BIBs.
The sound itself is really very good.- all warm and friendly. You just want to listen to them..
We recently built a pair of FE168ESigma BIBs, and at the moment the highs are harsh and not extended. I've heard what others say here, so I suspect that they just need more breaking in-and possibly a tweeter rolled in very high.. But at the moment it's much better to listen to the BOFUs
The sound itself is really very good.- all warm and friendly. You just want to listen to them..
We recently built a pair of FE168ESigma BIBs, and at the moment the highs are harsh and not extended. I've heard what others say here, so I suspect that they just need more breaking in-and possibly a tweeter rolled in very high.. But at the moment it's much better to listen to the BOFUs
panomaniac said:
I will probably start with the 2uf and work down as needed with mine, when I finish the cabinets. My hearing is a little bit less than perfect anymore, considering my age, and vetran status. If it cuts off too high, I may not be able to appreciate the added tweaters.
However, I still have two more projects with loose ends to complete before I can start on my six sided enclosures that will house them. I think I pretty much have everything, including the veneer for the enclosures. I just need to get through with those little speakers I have on the "veneer" thread, and another pair of 6 1/2" MTMs to finish up.
A great thing about those tweeters is how easy they are to mount- just drill the hole and push them in..I had to sand the hole a bit, but still. I don't know if not having them flush is really bad, but they sound good, and I think because they are used only at the uppermost frequencies, if doesn't seem as important.
A buddy of mine sent me a pair of these little tweets about a year ago. I've since used them on all sorts of projects. They work well in almost every case.
They seem not to get the attention they deserve because they don't look fancy and they don't cost fancy. But used right they really do add a lot to most speakers projects. They are as good, if not better than, most drivers used in these pages.
How can you resist?
They seem not to get the attention they deserve because they don't look fancy and they don't cost fancy. But used right they really do add a lot to most speakers projects. They are as good, if not better than, most drivers used in these pages.
How can you resist?
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