Vintage ROLA 4R midrange drivers

[Moondog55]

I have 8 of these, 5 inch full range drivers, pleated paper surrounds and Alnico plug magnet; labelled 5 F 00 / 16 FOE; manufactured 1989
I thought they were 16 R and these are no good to me
I'll take the loss on these to get them out of the way before the missus finds out I spent $50-
$30- the lot plus postage
Will separate at $12 a pair plus postage

Were used by Australian Sound in a tall column speaker wired to 8R but I needed and wanted 16R drivers for this project

 

[Moondog55]

Here are the pix
Probably only useful on a rebuild project but these do the "Telephone band" quite well as would be expected for a small PA speaker

 

[Don Hills]

5F 00 89 3/5

5F = Model 5F
89 - diaphragm type F89
3/5 = 3.5 ohm (also available in 15 ohm)

4.5 watts peak
Fundamental Resonance = 165 cps
Response = 160 cps - 6.5 Kcps

 

[Moondog55]

Thanx Don
I was under the impression 89 was manufacture date, when would you say these were made then??
These boxes were 8R because 2 of the drivers in each box were disconnected, which was not what I was expecting. What's a fair price then??
The boss found out I got then and I am in serious trouble with SWMBO
They actually sound OK not brilliant but OK; very efficient and a rising response with a peak somewhere around 3 or 4 k from listening to female voice for a half hour

 

[Moondog55]

eBay Australia: Buy new & used fashion, electronics & home d?r
I sent them to ebay at $15- a pair
Interestingly one box ( which I did not measure first) still had a line transformer in it and all the drivers in parallel

 

[VaNarn]

F 89 is the code for the cone specification and a guess for the manufacturing date would be anywhere between the middle 60's to the middle 50's.There is possibly a date stamp that is hidden on a gasket,perhaps, or on the line transformer.

 

[Moondog55]

Line transformers date is much later than that

 

[Moondog55]

I just did a sweep using Audacity and roll-off after 4k is steep