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What ohm tweeters, HH Scott 197B 3way speakers

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pitchshiftdelay

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What ohm Tweetrs? HH Scott 197 B,----3way Speakers

I recently came into a pair of HH Scott 197B speakers. The tweeters were missing. Does any body out there know what ohm they should be?
The woofer is 8 ohm and the midrange is 4 ohm.

from,
Pitchshiftdelay
 
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They used Philips soft domes, IIRC, so they could've been either. I think I have some info on that model; I'll check.
 
Yep, Phillips, here is front and back
 

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Interesting - I just refoamed a pair of S-197's (no "B") that use the seemingly more common round-faced Philips soft-dome tweeter. - Mark
 
Fwiw

Here's the spec sheet from the 1978 (ish) Scott brochure that includes the 197B.
 

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The square mounting plate with the "decorative" metal ring in the photo.....does that come off?? eddd7
 
Eddd7 said:
The square mounting plate with the "decorative" metal ring in the photo.....does that come off?? eddd7
Click to expand...

Most Philips tweeters I've seen use a universal "butterfly" voice-coil assembly. If you undo the screws on the front plate of the tweeter you can pull the whole thing apart. The voice-coil/dome/suspension comes out as a unit and is self-aligning to the magnet. It is very easy to remove the bad voice-coil assembly and put in the new one. That is what I did and the speakers are back in play again.
 
Guys i just picked up a pair of these in near mint condition, this is a super old thread, but if you still need the ohm reading of those tweeters let me know, i will pull one and spec it out for you
 
I've got a pair of these that I've had since '79 or '80 - I'm about to replace the switches, caps and foam surround for the woofer (might do the resistors too - is it worth it? They measure within tolerance). They were still working fine other than the switches being broken and stuck in the -6dB position, and foam surrounds starting to split, so hope everything goes to plan.
 
well if you are putting the time into them at all, you may as well.. you can get far better than original caps from erse audio or parts express nice metalized poly +-5% and under for very in expensive and resistors that are +-2% or so and get the best out of them for a hand full of dollars maybe 20 =3- .. its interesting these are built with pretty nice components .. do i think they will beat my higher end speakers no not at all but i think they could be nicely musical and fun to have!
 
Hi Nick,

Thanks for the tips - I'm in the UK but there are a few online places that I can get the components from, so will look at the prices of those with tighter tolerances.

I'm no audiophile, so I'll just be happy to have them sounding close to what they were like when I bought them, and enjoy the process of replacing the components. I think I added the cost up and it was surprisingly cheap. The most expensive parts will be the foam surrounds. I think something like $30 total all in using similar specced components, so a it more for %5.

Cheers.
 
Hopefully you can find some audio grade film capacitors for those. Across the pond, we buy a lot from Parts Express. I'm sure some UK vendors have been discussed here before but I couldn't tell you from memory. There are also non-inductive resistors for crossovers made by Mills that are really cheap.
 
If you have had these since new, i suspect any updated tighter tolerance caps and resistors will land you in a better than new condition,
 
Thanks guys - I'm familiar with Wilmslow so that's a start, and the Mills resistors are a good tip too. Better than new would be great though I doubt I'd hear the difference!

I can't get the original three position switches so will have to get something generic. I doubt they'll get used much so will probably stay in the same position anyway.

The cone refoaming looks to be the most tricky job so an afternoon on youtube might help with that :)

Cheers.
 
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