BillFitzmaurice.info

15 minutes from my house.

The protocol I wrote specified a maximum of 95dBA, 105dBC at the FOH, 75 feet from the stage. That keeps the neighborhood at 50dbA, 60dBC 1/2 mile away. This is the venue: https://www.banknhpavilion.com/

In 2004 I was hired by a major outdoor venue on the verge of being shut down due to complaints about their sound levels in the neighborhood, mostly because of high levels of bass. This was a year after they paid a 'professional' company $50k to come up with a protocol to monitor their levels at the ...

C weighted would have read more because it measures more frequencies. A weighted is typically used for industrial applications.

Always measure music C or Z-weighted, A doesn't measure bass.

I can provide just the pages that cover the crossover, since it does no good to anyone who doesn't have the rest of the plans. Send a request to fiztmauricebill at gmail.com

Order a plans update.

I assume you mean the mouth, the driver fires into the throat. Brackets to hold grille cloth or wire mesh won't bother anything.

45v will still reach 125dB.

Unbalanced is OK if the interconnect is short and both amps are plugged into the same outlet with short cables.

The crossover adds 90 degrees of shift for the woofer, 360 for the tweeter, for a total of 90 degrees, which in and of itself isn't a problem. But if the driver offset adds another 90 degrees or close to it you'll get a dip.

A dip around the crossover frequency can be caused by the crossover, and it can be caused by the positions of the driver diaphragms, as phase shift is cause by both electrical and physical leading and lagging. The polarity testing procedure is in the plans because you can't predict the result with e...

The only issue is if he has to separately power and limit the two. If separately limiting isn't possible he'd have to limit to the lower capacity of the two.

Mishkin wrote: ↑Fri May 15, 2026 2:48 am I'm wondering if the discrepancy in output will compromise the benefits of V-plate coupling them.

The advantage of V plating is a longer horn path and larger mouth, so it always gives a better result.