B20 plus cheap helper tweeter - why? - diyAudio
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Old 3rd October 2007, 09:08 PM   #1
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Cool B20 plus cheap helper tweeter - why?

I was wondering why so many of us like the B20 with a cheap helper tweeter. Some like piezos (I do) while others prefer domes. In either case, the helper tweeter is always cheap and always seems to enhance the sound.
Even when compared to more expensive Fostex drivers that extend past 20k, the B20 plus helper still sound as good or even better. Compared to my expensive Dynaudio D260 Esotec (or whatever its called) tweeter, I feel the piezo on top of the B20 produces a sweeter top end.
Maybe the question is why does an inexpensive helper tweeter change the sound so drastically of the B20?
And, how can that tweeter be so inexpensive and sound as good or better than the much more expensive one?
I think the answer has to do with the crossover frequency. What are your thoughts?
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Old 3rd October 2007, 09:14 PM   #2
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Well the B20 is obviously lacking in the higher octaves, so a helper tweeter is always welcome. I think the reason why a cheaper tweeter works is because of the crossover point. From my understanding, its not as difficult to produce frequencies above 10K with efficiency and fidelity. Reason being is most of the "meat" of the music is located below that point...

I am determined to use the B20 + helper tweeter as my next project. I have heard so many good things I just have to try it
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Old 4th October 2007, 02:27 AM   #3
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I as well will be using the B20 with helper tweeter when I get around to it. I am getting married and have a baby on the way, so its hard to juggle a speaker project into the mix, but while the Canadian dollar is up, I will purchase the parts (I hope!).

Sorry I couldn't add to why it may sound so good, but what crossover frequency do you use on your piezo there Godzilla? Is that using the 1uF cap or not?
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Old 4th October 2007, 02:55 AM   #4
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Quote:
Originally posted by davidallancole
I am getting married and have a baby on the way, so its hard to juggle a speaker project into the mix,
Tell her its a wedding/baby shower present.



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Old 4th October 2007, 04:02 AM   #5
GM is offline GM  United States
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Default Re: B20 plus cheap helper tweeter - why?

Quote:
Originally posted by Godzilla

I think the answer has to do with the crossover frequency. What are your thoughts?
Agreed, it's high enough to be rolled off enough that it's outside our acute hearing BW even with just a cap.
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Old 4th October 2007, 04:19 AM   #6
el`Ol is offline el`Ol  Germany
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Are you using the B20 with or without whizzer?
And did you combine the piezo with the Eminence B102 also?
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Old 4th October 2007, 04:22 PM   #7
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I don't think that would go over well, 3-LockBox.
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