SLA Pro

[LelandCrooks]

I just completed a pair of these for a customer a bit back. Forgot to post a review. They very much remind me of DR200's that are getting close with eq to flat response. Midrange monsters. They do need subs if you want full range. Not much bottom, just as the chart reflects.

[SirNickity]

Prreetttyyy....

Hey, I've been mulling this one over for a bit.. If you're DJing a large room, say a banquet room for a wedding or corporate event, where you don't want it LOUD, but you want even distribution, how many of these would you use?

I'm thinking like a square or rectangle room, anywhere from 50 to 100 ft in width and length. Right now I'm using a single pair of tops on either side of the booth, but the folks in the front get a barrage while those in the back can't hear the announcements.

Would it work to have one every 25ft or so? Would you angle them all towards the center of the room, or have them all facing the back and delay them progressively?

[DJPhatman]

Prreetttyyy....

Hey, I've been mulling this one over for a bit.. If you're DJing a large room, say a banquet room for a wedding or corporate event, where you don't want it LOUD, but you want even distribution, how many of these would you use?

I'm thinking like a square or rectangle room, anywhere from 50 to 100 ft in width and length. Right now I'm using a single pair of tops on either side of the booth, but the folks in the front get a barrage while those in the back can't hear the announcements.

Would it work to have one every 25ft or so? Would you angle them all towards the center of the room, or have them all facing the back and delay them progressively?

For 100' deep room, a pair of DR200 will do everything you ask above. Clear, and quite focused.

[Bill Fitzmaurice]

Would it work to have one every 25ft or so? Would you angle them all towards the center of the room, or have them all facing the back and delay them progressively?

In a 100 foot deep room one pair at the front of the room, another halfway back on a delay would suffice. SLA Pro and DR200 with a flat array are comparable in results. SLA costs more because it uses four woofers; that's the price paid for ease of construction. The other reason for SLA Pro is its smaller less obtrusive form factor.

[LelandCrooks]

SLA costs more because it uses four woofers; that's the price paid for ease of construction.

And weight. They're surprisingly heavy for a very small cab. Alpha6a's look like a mini me of lab12's. One helluva driver.

[SirNickity]

Really? DR200s up front? I'm planning a pair or two of those anyway for live / high-volume use. So, while having adequate volume at the farthest end, that wouldn't overpower the poor folks ~10ft away? I'm looking for background music levels here; conversation-friendly and evenly distributed. Using one or two T30s in a corner, preferably the one with a bit of distance to the nearest cluster of people.

I appreciate the suggestions. And sorry if this is a thread-jack, but I thought it might just be the niche for this model.

[DJPhatman]

Really? DR200s up front? I'm planning a pair or two of those anyway for live / high-volume use. So, while having adequate volume at the farthest end, that wouldn't overpower the poor folks ~10ft away?

Use 4 and power shade them, with less power to the lower cabs. Just wire the bottom pair, in mono, to one side of the amp, and the top pair to the other side of the amp, easy as pie. Low passed at 100Hz, and you are rockin'.

BTW, have you thought about using T39s instead of T30s? At 35Hz, the T39 just walks away from the T30, in terms of total output.



Unless you are playing bass-heavy electronic music, T39s are the better choice. A bonus is they will work well with live acts, as well as recorded music!

[bzb]

Very nice Leland, which corners did you use?

And... got em in white?

[bassmonster]

They look great! But....are they loud?
Btw, those in all white with a black grille and accents would look sharp at weddings.

[LelandCrooks]

But....are they loud?

These are Bill's design, remember?

And... got em in white?

http://www.speakerhardware.com/metal_ca ... wc1824.php
Chrome and black, but last I checked, you could get a can of white spray paint for about $2.

I don't know if they'll achieve the kind of volume a DR200 will, I was only running them with a 20w t amp. It was plenty loud in my kitchen. Just as soon as I turned them on, I just heard DR's.

[UROK]

They look great! But....are they loud?

If you chuck 'em off somewhere really high, I guess one would be loud, two even louder as they hit the ground. But not so great-looking.

Sorry bm you walked into that one, mate.

Let's be clear...

It takes more than loudspeakers to generate sound pressure waves.

What I think you mean is, "How sensitive is the SLA Pro design?" That info will be in the plans.

It's been pointed out to you that this is the site of the designer of most sensitive loudspeakers around.

To be really scientific what does Bill say? Well, Leland compares SLA Pros to DR200s in sound quality. DR200s sit just above OT12s in the BFD pecking order and Mr Fitzmaurice said regarding OT12s that they would, "Take your head off at 30 paces".

Loud? Loud.

[BoostFab]

In a 100 foot deep room one pair at the front of the room, another halfway back on a delay would suffice. SLA Pro and DR200 with a flat array are comparable in results. SLA costs more because it uses four woofers; that's the price paid for ease of construction. The other reason for SLA Pro is its smaller less obtrusive form factor.

has the idea of 8" SLA Pro come to mind ?


btw! thanks for the fast delivery of the Alphas LeLand!

[Bill Fitzmaurice]

has the idea of 8" SLA Pro come to mind ?

It's called TLAH Pro.

[SirNickity]

BTW, have you thought about using T39s instead of T30s? At 35Hz, the T39 just walks away from the T30, in terms of total output.

Absolutely, I have thought about it. Both Tubas and Titans are already sensitive, and they both go quite low. But, if I have to compromise, I'll trade extension for volume. Not every song I play will have 30Hz content, but some will, and they'll be loud and proud!

Leland -- any comment about how the Dayton PA-165 compares to the Alpha? There's a thread over in the Builds forum about this.

[LelandCrooks]

Leland -- any comment about how the Dayton PA-165 compares to the Alpha? There's a thread over in the Builds forum about this.

Many moons ago in the original wedgehorns the Alpha kicked the dayton's ass. Still got a pair of daytons laying around somewhere that I pulled.