New Stage Monitors Finished

[Earl K]

Hi John,

I like the metal screen with it's integrated surround .

Where did you find that ( or is that a JRX part )?


Thanks <> Earl

ps: Do you ( or anyone else for that matter ) have any idea if this water-based DuraTex will properly adhere to an already exisitng coating of oil-based Polyurethane ?

[johnaec]

I like the metal screen with it's integrated surround .

Where did you find that ( or is that a JRX part )?

Yep it's a standard JRX grille. Cheaper than trying to fabricate something similar...

ps: Do you ( or anyone else for that matter ) have any idea if this water-based DuraTex will properly adhere to an already exisitng coating of oil-based Polyurethane ?

'Not sure, though I'm guessing it would work if the polyurethane was roughed up first, (possibly not necessary). It appears to be highly adherent, and though water soluable, definitely not as much so as latex. Maybe give them a call: DuraTex by Acry-Tech

BTW - even though I ordered the textured roller from them, I didn't use it. Once a coat was tacky, (less than a minute), I just lightly passed the roller over again, (without more DuraTex), which lifts it slightly, them it smooths down a little as it dries. JBL sprays their finishes on, and really heavily, resulting in a more pronounced texture than mine. I'll have to experiment with the textured roller sometime...

John

[Don C]

The monitors look great. Keep us updated regarding any future gigs. I enjoyed that last one.

[boputnam]

...the last pic is of a curve Zilch ran for me after completion.

Those look dandy, John - that DuraFlex finish is nice.
Great size, aren't they!!

What does the FR look like below 300Hz...?

What is the crossover point?

[johnaec]

That curve doesn't show below 300 because we were doing some tests to determine the results of grille on/off on high frequency response for a thread over at PSW and were ignoring stuff below 300, (because of room nodes, etc.). But they're basically pretty good to around 80-100 hz, maybe a little lower... (we did do some full response curves at some stage, but I don't have those here).

Crossover is at 1.2 Khz. Zilch has already suggested tweaking the crossovers more during assembly of the second pair...

John

[Mike Caldwell]

Great job!
If you want to lighten the load you can replace the 2206's with JBL 2262 neo 12's. There the same one used in the JBL SRX712 and the Vertec 4888 cabinets. I built 8 monitors similar to yours and about two years ago replaced the 2206's with the 2262's and my back can tell the difference! I also used the 2426 driver, a couple have 2425's in them. The horns are B&C ME45. They are all bi-amped. To add more fun cutting the pieces of wood out I made them dual angle. I have some pictures posted in the photo section of the system.

Mike Caldwell

[johnaec]

If you want to lighten the load you can replace the 2206's with JBL 2262 neo 12's.

Yea, but at ~$400 each for the 2262, it would have totally negated the whole rationale for building these - cost savings with components on hand. If I could have swung 2262's, I would have just sold my existing components and sprung for used SRX712's instead...

John

[boputnam]

I (should) have just sold my existing components and sprung for used SRX712's instead...

I was thinking that just last night rehearsing with my SRX712M's. They are dandy.

But seriously, John, your wedges are beauty. You will get enormous satisfaction from using these.

btw - that is exactly the compliment of transducers in the JBL 4825A and 4828A Concert Series monitor/floor wedge, respectively. These use the bi-radial horn, which I cannot imagine is a a good idea on a stage wedge - the horizontal dispersion is far too wide. :dont-know

[Mike Caldwell]

btw - that is exactly the compliment of transducers in the JBL 4825A and 4828A Concert Series monitor/floor wedge, respectively. These use the bi-radial horn, which I cannot imagine is a a good idea on a stage wedge - the horizontal dispersion is far too wide. :dont-know

I never heard the Concert Series monitors but I always thought the same thing about the horn!

Johns' wedges look great and will smoke any JRX model since there loaded with real JBL components!

Mike Caldwell

[Mr. Widget]

Very nice looking John!

Congratulations on a job well done.


Widget

[UreiCollector]

Very nice work, and the DuraTex finish looks great!

[4343]

Nice! I might have put a pole socket on one end for use as the occasional mains, but thats just me thinking like a rental house...
Seriosly, great sounding wedges make good mains for smaller gigs, I've even used a pair as recording monitors in a pinch.

[speakerdave]

Nice, Big John!

[johnaec]

Nice! I might have put a pole socket on one end for use as the occasional mains...

Actually, I'm doing just that. It took me a while to find the ones I need, because they couldn't be deeper than 3-1/8", (to clear the LF), and I wanted them metal, not plastic. They arrived a few days ago, and will be installed.

John

[vettedrummer]

Very nice work! What type of music do you play?