Does anyone have the TAD TL-1601a and Exclusive ET-703 Frequency Response Graph? - diyAudio
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Old 26th November 2010, 06:25 PM   #1
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Default Does anyone have the TAD TL-1601a and Exclusive ET-703 Frequency Response Graph?

Does anyone have the TAD TL-1601a and Exclusive ET-703 Frequency Response Graph?

I am trying to determine where to cross those drivers.
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Old 27th November 2010, 01:14 AM   #2
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These two can not be merged into a 2-way.
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Old 27th November 2010, 01:52 AM   #3
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They will be in a 4-way system with TAD TD-4001 and TL-1102.
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Old 27th November 2010, 06:40 AM   #4
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ET703:
l’ET-703 et son pavillon. Jipihorn's Blog

Click the image to open in full size.
blue: on axis
green: 30 off axis on the horizontal plan (when the slot is vertical)
red: 30 off axis on the vertical plan (when the slot is vertical)

It is interesting to see that when used above 10khz it has more dispersion vertically than horizontally (pattern switch under 10khz...)
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Old 27th November 2010, 06:56 AM   #5
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Thank you.

Could you explain what does 30 degrees off axis on horizontal and vertical plane mean?

It seems like these ET-703 are good down to 2kHz. I am surprised and very impressed.

Combine with the TAD TD-4001 graph, it seems like a good crossover point could be from 3K to 7kHz. Does anyone have experience with crossing these drivers?
Attached Images
File Type: jpg TAD TD-4001 FR.jpg (65.7 KB, 368 views)

Last edited by HP8903B; 27th November 2010 at 07:00 AM.
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Old 27th November 2010, 08:32 AM   #6
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8khz to 12khz would be better, but it depends on the horn you are using.
3khz is way too low, and risky with such a pricey driver.

as for the 30 thing, simply put:
if you cross it above 10khz, use the ET703 with the slot in horizontal position, if you cross it under 10khz, use it in vertical position
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Old 27th November 2010, 07:10 PM   #7
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Quote:
3khz is way too low, and risky with such a pricey driver.
I think you are right considering TAD recommends 5kHz or higher.

Quote:
8khz to 12khz would be better, but it depends on the horn you are using.
Could you explain why this range would be better than say 6kHz to 8kHz? From the TD-4001 graph, it seems like the TD-4001 is not very good above 8kHz.

I am using Yamamoto F-350II with the TD-4001. The cut off frequency is 350Hz.
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Old 27th November 2010, 10:22 PM   #8
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I just realized that the Exclusive Model 3401 crosses the ET-703 at 7kHz.

EXCLUSIVE model3401-W
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Old 28th November 2010, 06:22 PM   #9
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what horn are you using?

using both TL1102 and TL1601a in the same design seems overkill. The difference between the two drivers is not worth a crossover point. You would be better served with a real subwoofer instead of the 1601, or maybe get rid of the 1102 and let the 1601 meet the 4001 if you have a big enough horn.
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Old 28th November 2010, 07:33 PM   #10
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I have a pair of Yamamoto F-350II horns. The cutoff frequency is 350Hz.

Quote:
You would be better served with a real subwoofer instead of the 1601
You could be right about this.

But from my amateur understanding, the TL-1601a is a pretty fast woofer. Real subwoofers are usually slower. While they can go lower, they cannot keep up with the higher frequency drivers. I prefer a coherent system over deep bass. Do you have a particular subwoofer driver in mind?
Anyone with experience about this please chime in.

Quote:
maybe get rid of the 1102 and let the 1601 meet the 4001 if you have a big enough horn
I am not so sure about this idea. Having the TL-1102 as the mid-bass, I believe, has great advantages. Not only I do not take the TD-4001 and the TL-1601 to the edge (where they do not perform very well), but I also have the volume adjustment ability for the lower half of the mid-range. Therefore, I can fine tune the sound. For example, if I add more volume on the mid-bass driver, I will get a thicker sound; It will feels like the singer is heavier and the sound of the instruments have more weight. The key is this can be achieved without affecting the bass. I did not realize this benefit until my system was set up.

Last edited by HP8903B; 28th November 2010 at 07:40 PM.
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