I read another of your post where you mentionned wanting to try light machine oil mixed with a solvent. How'd that work for ya?
I might just go right ahead and try it, these drivers have no value to me, so I don't mind if I screw'em up. If it helps a bit, then good, another pair of drivers lying around, waiting for who knows what... 🙂
az
The Sanyo cousins ...
Well I did manage to grab them and to my great joy they appear to be in 1st class condition. I haven't swapped them into enclosures yet, but they appear physically identical to the beige Sony HB's.
The chap from whom I bought them removed them from a Sanyo RtR years ago, but can't remember the model. (Can anyone assist?)
cheers
Doug
Well I did manage to grab them and to my great joy they appear to be in 1st class condition. I haven't swapped them into enclosures yet, but they appear physically identical to the beige Sony HB's.
The chap from whom I bought them removed them from a Sanyo RtR years ago, but can't remember the model. (Can anyone assist?)
cheers
Doug
Attachments
Let me add to the already vast array of FE103 variations/clones.
Sanyo "Bass Wave" enclosures, basically omni-directional double-fold concentric transmission lines, ~30" long, ~110Hz tuning, with up-firing driver into a conical diffusor. They each contain a single Sanyo-labled 4" fullrange, which appears similar to the RS 40-1197.
They suffer from SSS, with an elevated Fs~140Hz. I have applied armor all to the surrounds, brushed-in with a soft bristle toothbrush and got Fs down to 118Hz. Brushing-off the residues with light machine oil and then alcohol did not seem by itself to alter anything much more. But if I give the drivers a good "workout", 40Hz test tone to get ~4-5mm peak-to-peak cone excursion for a minute or so, Fs then measures around 108Hz. Qts are respectively 0.76 and 0.67 for the two states of Fs.
They sound pretty good once converted to direct radiators in the stock enclosure, other than bass being quite weak.
IG
Sanyo "Bass Wave" enclosures, basically omni-directional double-fold concentric transmission lines, ~30" long, ~110Hz tuning, with up-firing driver into a conical diffusor. They each contain a single Sanyo-labled 4" fullrange, which appears similar to the RS 40-1197.
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An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
They suffer from SSS, with an elevated Fs~140Hz. I have applied armor all to the surrounds, brushed-in with a soft bristle toothbrush and got Fs down to 118Hz. Brushing-off the residues with light machine oil and then alcohol did not seem by itself to alter anything much more. But if I give the drivers a good "workout", 40Hz test tone to get ~4-5mm peak-to-peak cone excursion for a minute or so, Fs then measures around 108Hz. Qts are respectively 0.76 and 0.67 for the two states of Fs.
They sound pretty good once converted to direct radiators in the stock enclosure, other than bass being quite weak.
IG
I have a pair of 10F3's with stiff surounds. Anything wrong with replacing the cloth
surounds with new foam ones?
surounds with new foam ones?
Replacement is not the most desirable solution, but I guess it can be done. Did you measure their Fs by any chance?
IG
I measured one of the 10F3 drivers and the FS was 153hz and QTS was .804 .
Then I removed the surround and measured the driver the new FS was 69hz
and the QTS was .24 . I was realy wondering if the spider might be getting
stiff and not the surroud. I may try soaking the surroud in acatone and see if
that makes it a lot more flexiable.
Then I removed the surround and measured the driver the new FS was 69hz
and the QTS was .24 . I was realy wondering if the spider might be getting
stiff and not the surroud. I may try soaking the surroud in acatone and see if
that makes it a lot more flexiable.
Thanks, that's interesting info to have. Might try the same with mine to see how it compares.
IG
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