Seas 22TFF H1280 Tweeter - diyAudio
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Old 12th August 2015, 02:13 PM   #1
keilau is offline keilau  United States
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Default Seas 22TFF H1280 Tweeter

https://www.madisoundspeakerstore.co...22tff-tweeter/

H1280-06 22TFF

Looking for the FRD/ZMA files for this Seas 22TFF H1280 Tweeter, measured or converted from the manufacturer's curves. Thank you for your help.
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Old 13th August 2015, 01:22 AM   #2
system7 is offline system7  United Kingdom
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Keilau, I wonder why you're not considering the similar metal dome version SEAS 22TAF/G? I'm sure Spendor have their reasons for using the 22TFF, but I can't think of a good one.

Click the image to open in full size.

Everybody really likes the SEAS 22TAF/G. Even Joachim Gerhard:

Click the image to open in full size.

Any filter that works with the metal 22TAF/G is going to work with the soft dome 22TFF IMO, being so similar. But the metal dome is going to like a 7.5R and 0.68uF Zobel IMO. Just sounds smoother.

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Can't help you with the FRD and ZMA files. But I don't think it's that hard.
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Old 13th August 2015, 02:27 AM   #3
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re:"reasons for using the 22TFF" - they're cheap, have wide dispersion, & sound good, relatively easy to cross over.
cons - don't like too much power at the low end
currently using these in my main system, & have no desire to change, even though I have more expensive tweeters available...
cheers,
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Old 13th August 2015, 02:38 AM   #4
keilau is offline keilau  United States
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Quote:
Originally Posted by system7 View Post
Keilau, I wonder why you're not considering the similar metal dome version SEAS 22TAF/G? I'm sure Spendor have their reasons for using the 22TFF, but I can't think of a good one.

Everybody really likes the SEAS 22TAF/G. Even Joachim Gerhard:

Any filter that works with the metal 22TAF/G is going to work with the soft dome 22TFF IMO, being so similar. But the metal dome is going to like a 7.5R and 0.68uF Zobel IMO. Just sounds smoother.

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I am looking to upgrade the tweeters on 3 Wharfedale M-138 and M-128. I want the replacement to fit the exsisting recess hole. Either of them should work for me. The TFF is cheaper and I don't need to worry about taming the high frequency resonance. It is not a final decision until I order.

Quote:
Originally Posted by system7 View Post
Can't help you with the FRD and ZMA files. But I don't think it's that hard.
I have created a few FRD/ZMA from printed curves. But I don't really enjoy the process.

Roman Bednarek used the SEAS 22TAF/G for his Microbe SE project, but there is no FRD/ZMA for the tweeter at his Audiofiles page.
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Old 15th August 2015, 08:39 PM   #5
keilau is offline keilau  United States
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I created the FRD/ZMA files from the manufacturer's curve for Seas 22TFF H1280.

graph_h1280_22tff.jpg H1280-curve.jpg

It should be very easy to modify for 22TAF/G.
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Old 16th August 2015, 08:48 AM   #6
Zuhl is offline Zuhl  England
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It's no surprise you prefer them to more expensive tweeters. I feel the same about my 22TAF/Gs.
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Last edited by Zuhl; 16th August 2015 at 08:49 AM. Reason: typo
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Old 17th August 2015, 04:43 AM   #7
keilau is offline keilau  United States
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Quote:
Originally Posted by Zuhl View Post
It's no surprise you prefer them to more expensive tweeters. I feel the same about my 22TAF/Gs.
Do you mind to share your experience with the Seas?

I grew up with the like of Audax 12x9D25 and Seas H107 soft domes. They were very popular in the 1970-80 and were used in many highly respected boxes including the Spica TC50, Black Dahlia and the Larry Hughes bookshelf DIY that I built. I cannot image paying much more than I paid then, adjusted for inflation.

The Seas 22TFF is on its way. I have not been able to tried that yet.
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Old 17th August 2015, 06:18 AM   #8
Zuhl is offline Zuhl  England
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Here's my design using the 22TAF/G. There have been some minor x/o revisions since then. A Classical Three-Way Design

The sound is very clean. By that I mean there are none of the fizzy, gritty, mushy, metallic and/or other various adjectives associated with treble sounds. It disappears and all you have left is the music
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