tesla speaker spec's

[turk 182]

anyone know of a resource for Tesla brand loudspeakers?

 

[planet10]

Which ones? All the ones i have seen would be classified as fullrange.

dave

 

[Dave R]

Do you mean the Tesla model, by Scientific Fidelity?

Review on Stereophile here (there are sections on specs and measurements also).

Scientific Fidelity Tesla loudspeaker | Stereophile.com

 

[planet10]

I’m guessing the vintage European drivers.

ARO 666 attached.

dave

 

[turk 182]

that's the exact one's i have ARO 666 and they're accompanied by two ARO 388.
all from a canadian made console branded Symphonic.

what's really strange is wiring, it appears one 388 is not high passed and series feeds the tweeter.

any published spec's on these?

 

[turk 182]

here's a look

 

[turk 182]

is it possible that this wiring scheme when one considers the phase dots (i.e. polarity) with overlapping frequency ranges it creates a mid cut and crude loudness contour?

or does driver inductance serve a crossover function?

 

[planet10]

The tweeters in your picture are high passed with the series cap.

I don’t have T/S for these, just impedance curves. Fairly flat with a resonance peak @ about 110 Hz.

dave

 

[Cal Weldon]

Remember, it doesn't matter where in the series loop the cap goes.

 

[turk 182]

found another pair today in a Fleetwood console now to figure out what to do with them?
this pair was accompanied with some japanese tweeters and that same bizzare wiring scheme...yeah it was a Homer moment earlier when i was tracing things out...duh!

 

[turk 182]

so... on a scale of 1 to 10 how do these 666's rate as fullrangers?
i'm enjoying the first set on the original baffles stock just wired to my test amp!

 

[planet10]

An OB is likely a good 1st bet. Wire the 2 in series and shunt 1 with a big cap.

dave

 

[turk 182]

never been down the OB trail before.
any tips on baffle size and shape? there on 18 by 16 baffles now and give a fair show of themselves. placement i understand can make or break things no?
i've got some 100uf bipolar lytics for a quick listen.

 

[turk 182]

the 388 could be interesting by themselves if these specs are correct

Properties Input power RMS: 1,5 W
Input power MAX: 3 W
Impedance: 8 Ohm
Freq. range (Hz): 150-15000 Hz
Sensitivity (dB): 86 dB
Diameter: 100 mm
Mounting depth: 30 mm
Mounting hole: 100 mm
Basket material: Fe
Membrane material: papier
Weight:
0.18 kg

An externally hosted image should be here but it was not working when we last tested it.

 

[turk 182]

well i guess i'll just try something to see what i get.