Teal Thiel SS10f mid/tweets

[Remlab]

Couldn’t pass up the great deal on these at Madisound. Identical to the Regular Scanspeak 10/f-8424. Running them from 500hz and up. Super flat response up to 15khz

 

[Remlab]

How they look in the system.
IcePower amps on the 10f’s
Mild -2.5db parametric eq Centered
at 15khz, With the q set at .1

 

[Remlab]

More info..
Knock down micro cabinets from Parts Express
Walnut veneer
1/4” solid walnut baffles with auto panel sound deadening on the back
Stuffed entirely with high density polyester felt Panels.
Spikes sold in packs of eight on Amazon for $25.00

 

[Remlab]

Ran them in with a 90hz sine wave for four hours, and now I’m listening critically for the first time. Soundstaging(different from imaging, which can happen without “depth”)is staggeringly good. I’m assuming this is due to the lack of any crossover anywhere near the ear’s sensitive range between 1 and 5khz.

 

[Joseph Crowe]

They are good! Unfortunately I think Madisound is out of them.

 

[Remlab]

Crap! Sorry about that. Well, at least they’re still available in black and at the full price. The 4 and 8 ohm versions are both tested at hifi compass. Extraordinary results for both.

 

[Remlab]

The new SB Acoustics 3” fiberglass cone is very interesting too. Could be another cost effective version, similar to the Tymphany TC9’s. The peak at 15khz would have to be tamed though. Otherwise, the response is scarily flat for a wideband driver.

 

[Remlab]

SB10pgc21-4
Sorry, the peak is 12khz, not 15khz.

 

[xrk971]

The 10F/8414 is $70 and very similar. For simple sealed box and high passed above 200Hz will work just as well as 8424 which has a bigger motor to drive smaller enclosures.

 

[Remlab]

Totally agree. It would probably work even better than what I’m using, for this type of application. Less magnet reflections and better airflow.

 

[Remlab]

The reason I’m crossing over at 500hz instead of lower, is to not waste the talents of the Peerless HDS drivers beneath. The second harmonic starts slowly creeping up on the 10f’s at around 500hz also

 

[Remlab]

And less intermodulation distortion is never a bad thing, especially when using the 10f as a midtweeter

 

[Joseph Crowe]

The 10F/8424 in a front horn is excellent. %THD is well under 1% at 250Hz and drops to only 0.10% from 500Hz-3kHz. Subjectively it has a very balanced sound that is both lively and smooth...with no breakup until around 18kHz. In a non horn configuration (direct radiating) the best the 10F/8424 can do is 0.8% through the midrange. %THD is well above 1% at anything below 500Hz with direct radiating.

 

[Joseph Crowe]

SB10pgc21-4
Sorry, the peak is 12khz, not 15khz.

I would be curious as to what is causing the 12kHz peak...if it's a resonance or if it's just the natural rising response of the driver which isn't a bad thing it simply depends on how your using it.

 

[Remlab]

I would be curious as to what is causing the 12kHz peak...if it's a resonance or if it's just the natural rising response of the driver which isn't a bad thing it simply depends on how your using it.

There appears to be no fr aberrations above or below that peak, so I would imagine that it would be due to a natural rise and not to storage problems

 

[Remlab]

The 10F/8424 in a front horn is excellent. %THD is well under 1% at 250Hz and drops to only 0.10% from 500Hz-3kHz. Subjectively it has a very balanced sound that is both lively and smooth...with no breakup until around 18kHz. In a non horn configuration (direct radiating) the best the 10F/8424 can do is 0.8% through the midrange. %THD is well above 1% at anything below 500Hz with direct radiating.

Zaph and Hifi Compass both measured no more than about .5% thd above 500hz. All depends on the reference volume level relative to mic distance

 

[Joseph Crowe]

Zaph and Hifi Compass both measured no more than about .5% thd above 500hz. All depends on the reference volume level relative to mic distance

Yes this is true. I typically measure at 1 meter since I think it more truly represents what we hear from within the first 3 milliseconds of the impulse response.

 

[Remlab]

Vance Dickason got slightly different distortion results too(10f/8414) could be due to the smaller motor, not chamfering(maybe), a different distortion measuring technique, or a combination of the three.

 

[Remlab]

Just a thought..
If The $90,000 B&O Beolab 90 Is world’s most expensive Digitally processed Scanspeak/IcePower based loudspeaker, this project is probably the worlds least expensive digitally processed Scanspeak/IcePower combination. With no bass to speak of, of course

 

[Remlab]

Tiny Ghent Audio, ice power amp. Super easy build