BOZAK B305

[rhodus]

This morning I acquired this pair of Bozaks from an old Friend. They belonged to his late Father. I remember my friend and me listening to these beasts back in 75-76, when his Parents were not home of course. They were driven by a pair of McIntosh 60 watt tube amps. I haven't seen these speakers since back then and had no idea they were still around until my friend offered them up because he was cleaning house and getting rid of things. He sold the amps on ebay.
Anyway, I hooked them up and they still sound damn good, though I've read that the caps should be replaced. They're not a matching set, as seen in the photos. One still had a serial #5681 on a sticker attached to the back. I would like to date that serial number. I know they were old speakers in 1975.

 

[rhodus]

Here is the Mfg sticker that was barely hanging on. It illegible in the photo but the serial # is 5681

 

[Blue Shadow]

Seems the B-305 was made for years, ending about 75. This site has some flyers with the 305 in different forms. Bozak

 

[rhodus]

Seems the B-305 was made for years, ending about 75. This site has some flyers with the 305 in different forms. Bozak

From what I'm reading about date codes on the drivers themselves these appear to be early 1959 models.

 

[rhodus]

Started work on the Cabinets today. Was able to remove the Badges intact! Yoohoo! I need a Source for the 5uf 50 volt Xover caps. Anybody know of any?

 

[Blue Shadow]

Be simple to find a 5.0μF film cap but the voltage will be higher, no problem with that.

 

[rhodus]

Be simple to find a 5.0μF film cap but the voltage will be higher, no problem with that.

Thanks. I found some on eBay from Affinity for Artifacts

 

[Blue Shadow]

Thanks. I found some on eBay from Affinity for Artifacts

EastPoint here on ak, good source.

 

[rhodus]

EastPoint here on ak, good source.

Yea, I've purchased components from him in the past.

 

[rhodus]

Sanding and patching coming along. New xover caps and cotton batting will be here next week!

 

[rhodus]

I need help. The crossovers in my B305s each have a capacitor bank of (7) 5uf 50v caps, (2) inductors, and that's it. However, a Factory schematic for a B305 setup I downloaded shows (6) capacitors, no values given, with one wired in parallel with a resistor. Also, my 305s are not a matching set, they appear to be maybe a year apart going by date codes on the actual Drivers, and the fact that one has the nasty kimsul insulation and the other has what appears to be Cotton Batting. Other than the insulation they are the same. Also, all the caps in one xover read about 15-17uf instead of 5uf, so my intent is to just replace as is and go with it. I'm just very curious about the discrepancy and where I can find a correct schematic.