And what did we buy today?

PRR

Member
Joined 2003
Paid Member
Open House H628 Termination Hub
Open House H619 Rj45 Telephone Interface Hub
6 inch RJ25 Extension Cable (Pack of 8)
Open House H312Kit 12-Inch Enclosure

We still have land-line. Cellphone got acceptable only recently. Doctors and banks only know us by the landline.

This shack was wired in the 1980s by AT&T. Good stuff at the time, but a long time ago. Ma Bell is dead and the local franchise keeps getting sold to more rinky-dink operators in faraway states. Also multiple repairs and extensions by idiots (both company and owners).

We've had bad phone and no phone all month. Each subcontractor sent out finds some one thing wrong, service still bad but "works", and says our underground wire (our problem) :Popworm: is going bad. Which is the one thing a sub can't fix, only refer to the Installation Dept.

Well we were out for a week, after three services this month, so they sent a Company man. He fixed a lot of hackwork the subs did, AND confirmed the underground line did not seem to be bad (after disconnecting all else). He condemned one run inside the house (sadly the one we use most). With that disconnected it seems "OK".

Today I ran 30' of too-good CAT cable to the most-used jack and bodged that on; still "works".

I need to lose the bodge-job where five lines come off the inside box, and be able to disconnect lines to isolate problems and figure out which line/phone crackles/leaks.

The one "hub" breaks one punchdown line to 12 jacks. The other hub has 8 jacks to punchdowns. The short jumpers let me isolate individual lines. The box protects the works.
 

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Concrete. I will do heavy subwoofer box from concrete. It should be heavy and stable. Purely white and elegant. Or it will be a big mistake. :D
This summons a memory:

From the ceiling trusses in my shop hangs an ancient Electo-Voice model 30W, a 30" woofer. It was installed back in the mid-'70s, and after developing a misaligned voice coil it was recently removed from service (along with its badly designed open-back enclosure) and replaced with a more modern, better-tuned subwoofer. I wish I could find some of the original literature/ data sheets for this driver, because I remember they recommended concrete enclosures for best results. (We did not opt for this at the time.)
 
This summons a memory:

From the ceiling trusses in my shop hangs an ancient Electo-Voice model 30W, a 30" woofer. It was installed back in the mid-'70s, and after developing a misaligned voice coil it was recently removed from service (along with its badly designed open-back enclosure) and replaced with a more modern, better-tuned subwoofer. I wish I could find some of the original literature/ data sheets for this driver, because I remember they recommended concrete enclosures for best results. (We did not opt for this at the time.)

I was looking at speakers in concrete housing. Beautiful and functional. My idea is to make whole 'box' as one solid piece and do 'something' (don't know what yet) to avoid cracks in the future. In front of me is lot's of reading and learning :rolleyes:
 

PRR

Member
Joined 2003
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Thanks so much for this! I see there that a near-Butterworth sealed alignment at F3=30 Hz could be had for an enclosure volume of only 50 cu. ft.! :D


As it happens, this week I'm looking forward to having lunch with one of the guys I was working with, back when we installed this beast. Haven't seen him in nearly 40 years.
 
I was looking at speakers in concrete housing. Beautiful and functional. My idea is to make whole 'box' as one solid piece and do 'something' (don't know what yet) to avoid cracks in the future. In front of me is lot's of reading and learning :rolleyes:

Maybe start a new thread about the concrete enclosure and we can get together and propose the sanest way to go about it.

I built a curved smaller enclosure years ago though it is not currently in use. Mine was formed with sonotube using sand topping with a mesh in the center to avoid cracking. Walls were about 1.5 inches or maybe 2.
 
Maybe start a new thread about the concrete enclosure and we can get together and propose the sanest way to go about it.

I built a curved smaller enclosure years ago though it is not currently in use. Mine was formed with sonotube using sand topping with a mesh in the center to avoid cracking. Walls were about 1.5 inches or maybe 2.

It sounds like good idea. And with photos. I should check also some chemicals for concrete, some are able to provide some kind of elasticity avoiding cracks. And mesh is a must have feature I guess.
 
Ooh! Pretty!

Uhh...

What the hell is that, again?? :confused:

It's supposed to be on your guitar... but back in the 60's it was more common to use various guitar bits as an ashtray :cool:

As a result, most new Telecasters are sold without the covers and you have to buy your own !
 

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