How good is a 25TFFC?

[mattpwill]

Simple question: How much of an improvement could I expect from a tweeter upgrade from a 25TFFC to something like the 27TBFC/G or better? I cross over at about 2kHz

Thank you for any help

[PeteMcK]

http://www.zaphaudio.com/tweetermishmash/compare.html

[mattpwill]

Thanks for the reply, the 25TFFC isn't there. Does the 25TFFN there have very close performance? If it does, it appears that it would offer better performance figures down to 2kHz, how audible would it be?

I'm a complete nooby when it comes to driver quality. I bought some Ruark Talisman IIs which have said Seas tweeters, so I could try to modify them. Previous to that I had only used B&W DM601 S2, which had tweeters that sounded clear but obviously high distortion, and Wharfedale Diamond 8.3s which tweeters sounded very unclear by comparison, but more listenable.

Thanks again for the help

[alan-1-b]

email to Ruark and ask for an opinion.

They may have tried the more recent SEAS tweeter, but not used it simply as it may increase the price of that particular model loudspeaker above a sensitive Market perceived threshold - such does happen.

If Ruark have experience with the other tweeter they may give you advice on how to modify the cross-over to get best performance from that tweeter,
but do offer to pay them for their time if it is a time-consuming matter for them to consider.

Go to www.seas.no and look at SEAS' data sheets also.
Look in their Prestige series drivers' section,
and in their Vintage drivers' section if yours is a discontinued model.

[mattpwill]

Thank you for the answer, but I'm using an active PC setup and using a calibrated mic, so I can easily adapt to any Seas tweeter with the right physical measurements (most fit).

There are many variants on the 27TBFC/G, such as:
27TBC/GTV
27TBC/G
27TBFC/GTV
27TBF/G

Is the 27TBFC/G the cream of the crop, and how would the cream of the crop compare to the 25TFFC please? Is the difference obvious?

Thanks

Matt

[Andersonix]

Originally Posted by mattpwill

Previous to that I had only used B&W DM601 S2, which had tweeters that sounded clear but obviously high distortion, and Wharfedale Diamond 8.3s which tweeters sounded very unclear by comparison, but more listenable.

"...sounded clear, but obviously high distortion"?
"...sounded very unclear by comparison, but more listenable"?
Perhaps if you reconciled these statements, someone could point you in the direction you want?

[mattpwill]

Ideally I'd like low distortion, good CSD, frequency response isn't a problem. My choice is limited to Seas tweeters with a 3.6mm depth by 103.8mm width (which is the majority of them). I would like to know how much of an audible difference the improved distortion level would make to the sound quality , thank you for any help

I can do a mini review of the tweeters I mentioned if you like =)

The DM601 tweeter sounded like it had high distortion, an average CSD plot, and a good frequency response. Good detail, poor long term listening. B&W make good build quality drivers

The Wharfedale sounded like it had lower distortion, a bad CSD plot, and an average frequency response. Sound quality not great, build quality terrible


Thanks again

Matt

[sdclc126]

You can't go wrong. It's probably the best tweeter SEAS makes and one of the best at any price period.

[Andersonix]

Can't say anything about the 25TFFC as I haven't heard it, but I wouldn't hesitate to use the 27TBFC/G. It seems to be almost everything one could ask for from a dome tweeter regardless of price. One would need to spend about twice that to get a better(?) tweeter. (I'm thinking of the Peerless 810921, which by the way has the same physical size mounting plate 104mm OD, 4.5mm thick.)

[PaleRider]

Go for a SS 9700 if you want a clean top