Re: [theatre-sound-list] Digest for theatre-sound-list@googlegroups.com - 7 updates in 1 topic

[Tim McCulloch]

Re: overly wide coverage

LCR systems need to cover the entire listening area from EACH loudspeaker position.  I'd not narrow the horn, I'd treat the reflective surface.

Also important to the discussion:  at what frequency does the HF horn become capable of full pattern control?  My guess is "well above crossover" which is more reason to treat the wall.

Tim McCulloch

IATSE 190

AES, too!

On Tue, Jan 23, 2024 at 11:05 AM <theatre-s...@googlegroups.com> wrote:

theatre-s...@googlegroups.com

Google Groups

Topic digest
View all topics

• Swap horns on d&b E12D? - 7 Updates

Swap horns on d&b E12D?

Mark V <m.z...@gmail.com>: Jan 22 12:22PM -0800 I work in a space that uses E12Ds (110x50) in LCR configuration as our main house PA. The wide coverage is great for the center position, but I think it's too wide for our LR pair - we have a lot of overlapping coverage in the house and I'm firing a lot of sound into the wall. I'm only trying to achieve even, mono coverage with the LR pair, with a center channel for vocals.   I recently spoke to a d&b dealer who said that I could buy E12 horns and swap the E12D horns for the E12 horn, effectively turning an E12D into an E12.   I'm wondering who out there has done this and what the result was. I'm curious about whether the speaker will behave exactly as an E12 would, and if this is potentially a situation where I could swap horns back and forth reliably depending on the design needs of the show.   Thanks everyone!

Nick Kourtides <nickko...@gmail.com>: Jan 22 01:25PM -0700 Drew Levy is the human to ask, but start here: suppo...@dbaudio.com   Nick Kourtides Sound Design (he/him) +1 215 915 0159 nickko...@gmail.com

Jim vanBergen <vanber...@gmail.com>: Jan 22 03:29PM -0500 Hi Mark, The E12 and E12D use the same LF & HF element and the only difference is a different horn design (80x50 vs 110x50). Since the horns are already rotatable for the cabinet, they are also easily swapped by turning & removing one horn and installing the alternative design. It's really quite simple, and yes, quite reliable. I'm surprised you haven't tried rotating the horns in a d&b cabinet, many of their point source designs do this reliably and well.   Best, JvB

Ryan Cooper <sound...@gmail.com>: Jan 22 03:30PM -0500 Worth asking Drew, but I’ve tried in the past with no luck.   D&B typically does same part swaps for things like horns/drivers only when things are broken and take the old one back to see what broke. They verify by serial number that they are sending you the same horn as is original to the box.     *Ryan Cooper* Pronouns: He/Him *P:* 919-801-0495 *E:* sound...@gmail.com <Sound...@gmail.com> *W: *cooperaudioservices.com

Mark V <m.z...@gmail.com>: Jan 22 02:49PM -0800 Thanks for the replies fellas.   Nick, will definitely reach out to Drew.   Jim, I've rotated the horns in these cabinets, but have never actually tried removing one. Glad to hear your experience with it. I'm definitely looking for that 80x50 degree coverage, and am happy to hear it's as simple as you've described.   Ryan, I'm not quite sure I understand your comment. Are you saying that you've tried to swap the horn yourself with no luck? Or are you saying you've tried to get d&b to swap a horn for you and they wouldn't do it? I have a dealer who says they can sell me an individual horn, so my only consideration is how difficult it would be to do the swap myself, and whether the speaker would behave predictably and identically when compared to a factory E12.       On Monday, January 22, 2024 at 3:30:46 PM UTC-5 Ryan Cooper wrote:

Ryan Cooper <sound...@gmail.com>: Jan 22 06:01PM -0500 Hey Mark,   Sorry that wasn’t clear. I was unable to get the part from D&B. This was Q1 to Q7/10 at the time. The reason I was told for these was to prevent folks from turning point sources into arrays even though I was trying to go the other way. This was about 4 years ago though so the policy may have changed.   Great news if your dealer can get them now!

<rbing...@juno.com>: Jan 22 11:13PM -0500 It might have been more complicated than that and that’s just what they told you. I know on a Q1 you could not rotate the horn. It physically would only fit in the cabinet in the direction it was intended to go, which was to make it more like a line array. I know this because I tried on some rented boxes.. the rental house didn’t know you couldn’t rotate a Q1 horn either until I called them. While the Q7 and Q10 could be rotated. So we had to come up with some very inventive rigging to get the Q1 box to be a very narrow horizontal dispersion and very wide vertical. I don’t know if that would have prevented you from physically swapping out their horns or not but it took both me and the rental shop a bit by surprise. In our defense, it was a last minute band aid solution to solve a problem caused by projection making me take out one of the array elements or our main center cluster, making it shorter. A choice that had already been decided for me before I was even asked to join the design team.     Richard B Ingraham     From: theatre-s...@googlegroups.com <theatre-s...@googlegroups.com> On Behalf Of Ryan Cooper Sent: Monday, January 22, 2024 6:02 PM To: theatre-s...@googlegroups.com Subject: Re: [theatre-sound-list] Swap horns on d&b E12D?     Hey Mark,     Sorry that wasn’t clear. I was unable to get the part from D&B. This was Q1 to Q7/10 at the time. The reason I was told for these was to prevent folks from turning point sources into arrays even though I was trying to go the other way. This was about 4 years ago though so the policy may have changed.     Great news if your dealer can get them now!

Back to top

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to theatre-sound-l...@googlegroups.com.