UREI Speaker discussions

[hjames]

Next stage. Based on comments from Subwoof on how to integrate a pair of 2214s as Helper Woofers
similar to what the UREI 813C has, I got a pair of 12mH chokes from Madisound this week.
I got some really nice fabric from "G-Street Fabrics" this morning - not quite JBL Monitor blue - but darned close!
Its a bit thicker than the scrap of Zilch-cloth I have - then again, the fabric today was a closeout at $2.97 yd!!

Anyway, popped the baffle boards, glued the cloth to it, mounted the 2214 drivers to each one, jammed some polyfill
into the oversize ports, then screwed a choke down near the 5 way cups in installed in the bottom.
Rigged a dual banana pomona cable between the bass cab and the UREI 809A terminal cups,
and turned on the Jolida 502 tube amp. Nice, but not as much bass as I thought.
On a hunch, I reversed the polarity to the bass cab and thats it!

See - the JBL woofers that are part of the UREI coaxial drivers are connected backwards from their original marked polarity.
I thought if I flipped apparent polarity to the "helper woofers", they might then match the actual polarity - and they seem to.

Now I have to go downstairs and try some tracks!

Thanks for the tips Mike!

[hjames]

Someone had a pair of grills on ebay 2 weeks back - though I did build similar grills for the 4320 boxes back when,
since I don't have a workshop, I usually set the table saw up outdoors to do such work, and its snowy and cold now
- so I broke down and just bought them.

They arrived from West Hollywood in the midst of a snow-squall yesterday.
They came with 2 sheets of very sticky 1 inch Velcros squares (8 ea).
Like the velcro on JBL grills and lenses, the glue usually separates from
the surface before the velcro releases. But they help the speakers look nice!