Unitron Speakers

Unitron speakers? Huh? An easy thrift store pass by..... It is what is in the box that the treasures can be found.

This pair caught my eye as the cabinets are in pretty good shape and made of real wood veneer, they do need a bit of sanding and new polish, that is easy work.

I opened these up and found a 10" Coral woofer and Coral Alnico tweeter, I figure the cabinets and the drivers were well worth the low low asking price.

My plan was to find a new home for some 10" Foster Alnico woofers and a tweeter of some sort, these boxes would fit the bill.

 I got these home and listed to them with the Coral's in them, boomy, boxy sound was all I heard. The Q's are too high from the woofer for this box. I pulled them out and inserted the Foster 10" Alnico woofer and a Radio Shack 4" Alnico full range speaker, crossed over with a simple 22uf cap around 900hz. Now these speakers sound delightful, like amazingly delightful.

 

Like amazingly delightful, I am going to do more finishing work on them but I have them up and running and I like what I hear.

I mounted the Corals on a spare baffle board that I had around and gave these a listen....OMG these on a baffle are a completely different speaker. Super efficient, the high Q's add beautiful sounding bass for its size of the woofer and the mids and highs are dreamy delicious. Just as I suspected.

New baffles will be made for these and I will offer them up for sale in the near future.

Admiral Turbo Reflex Speakers

Here is something that flies under the radar for almost everyone but there is a dedicated following for this speakers, super ugly and cheaply made cabinets. It is what was inside and the design that counts.

These speakers use Coral 12RG06 full range 5.25 inch woofers and a tweeter crossed over with a 1uf capacitor. The boxes are a back horn loaded design with the chamber that goes back and forth across the internals three times producing outstanding bass. The sound from a tube amp defies how cheap and ugly these speakers seem to appear.

In that respect I have salvaged the drivers and kept one box to rebuild this design in decent boxes, I have enough Foster 4 inch drivers also to make a few pairs of folded horn loaded speakers.

 

Next open baffle project Akai SW-135 Speakers

Just picked up this pair of Akai SW-135 speakers for the next open baffle project. These seem to have Foster or Coral Alnico drivers, perfect for open baffles.

The cabinets have been gutted and speakers are in perfect condition.