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Multi-Way Conventional loudspeakers with crossovers

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Old 29th June 2011, 01:45 PM   #1
DrDyna is offline DrDyna  United States
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Default Eton 7-360 Hex and my potentially terrible idea.

I've had a couple of these Eton 7-360 Hex drivers for a while. I was doing some reading online while I was trying to come up with a proper cabinet.

I've got them in a 2 way with a Seas 25TAF/G.

Now, here's the part where I think I might be losing my mind.

From the looks of the response of the Eton (unfortunately, I don't have any proper measuring equipment) it rolls itself off pretty sharply starting around 4500hz or so and I thought to myself...I wonder what the drawbacks would be to running the midbass unit naked and crossoverless and using a simple 6db slope on the tweeter in various places until it sounded like it was mating up properly, essentially ending up with a crossover that consisted of 1 capacitor.

Has anyone ever done anything like this with one of these woofers?
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Old 29th June 2011, 02:30 PM   #2
DrDyna is offline DrDyna  United States
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Scratch that, 2 parts. Had to put a resistor on the tweeter, it's a little happier than the woofer is. 4.7uF and 2ohms (so far).
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Old 29th June 2011, 03:30 PM   #3
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I have the FRD/ZMA file of the Eton 360 but it seems to be in a box.
For the 25TAF H0398, a little old this tweeter, but the K27G, soft dome should work in the simulation ?

You have an horrible peak near 4500Hz with the eton, you need a notch to suppress it.

File attached. You can use speaker workshop or pcd.

Have fun !
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File Type: zip eton-seas.zip (14.4 KB, 34 views)
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Old 29th June 2011, 03:46 PM   #4
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by jerome69 View Post
I have the FRD/ZMA file of the Eton 360 but it seems to be in a box.
For the 25TAF H0398, a little old this tweeter, but the K27G, soft dome should work in the simulation ?

You have an horrible peak near 4500Hz with the eton, you need a notch to suppress it.

File attached. You can use speaker workshop or pcd.

Have fun !
Thank you sir

It actually sounds surprisingly good right now, I've been listening to it for about an hour. I can tell that there are a couple of peaks, so I might play with it, but i like the idea of "lol, what crossover?"

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Old 29th June 2011, 03:58 PM   #5
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What crossover ?

I played with the data, you can do a crossover very closed to the latest HiVi-ViFa.

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Old 29th June 2011, 04:09 PM   #6
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by jerome69 View Post
What crossover ?

I played with the data, you can do a crossover very closed to the latest HiVi-ViFa.

Which I still haven't ordered the parts for yet It's on my shopping list next time I've got some spare cash though
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Old 29th June 2011, 05:15 PM   #7
DrDyna is offline DrDyna  United States
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One thing is for certain, I like this midbass unit a lot more than the HiVi m6a in my other set. You say the crossover would be very close to the one you helped me with for the HiVi/Vifa, would it change much if I were to use these midbass units instead of the HiVi?

Could I just leave out your notch filter and be fine?
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Old 29th June 2011, 05:58 PM   #8
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by jerome69 View Post
File attached. You can use speaker workshop or pcd.

Have fun !
For some reason when I try to open that FRD it doesn't do anything, I still have just one straight line for frequency response

Edit: It's working in Speaker Workshop, gonna try to figure this out.

Last edited by DrDyna; 29th June 2011 at 06:12 PM.
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Old 29th June 2011, 06:43 PM   #9
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You mean open with pcd ? The first line of the file is a header, you should remove it. About the data, don't forget to add for the woofer, the acoustic center (I use -4cm).

The peak is 4.5kHz, the notch is different 0.47mH 2.2uF R~5ohms.
See the schema. I calculate very fast. You can do other slopes it's up to you
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Old 29th June 2011, 06:58 PM   #10
DrDyna is offline DrDyna  United States
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Quote:
Originally Posted by jerome69 View Post
You mean open with pcd ? The first line of the file is a header, you should remove it. About the data, don't forget to add for the woofer, the acoustic center (I use -4cm).

The peak is 4.5kHz, the notch is different 0.47mH 2.2uF R~5ohms.
See the schema. I calculate very fast. You can do other slopes it's up to you
It's going to take me a while to get used to Speaker Workshop. For some reason, PCD won't load the frd or zma files. I tried removing the first line also. It's probably office 2010, I need to install an old one on another computer.
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