Mids and highs to go with HD15’s

Porn Horn 12         &nbs p;£148
P Audio SN 12B         &nb sp;£80
Porn Horn 1.5         &nb sp;£42
P Audio SD 740N         &n bsp;£158
                ----
                £312

I am in the process of buidling a rig suitable for outdoor use :)

So far i have cobbled together some reasonable bits

QSC RMX1850HD
QSC RMX4050HD
Behringer Ultradrive Pro

Dom said he would sell me 8 of his single HD15's (when he has the time to tidy them up) which I intend to load with PD154's and run 4 per side in parallel on the 4050HD (giving 500W/cab)

Now I was originally intending to purchace one more amp (somthing small and lightweight) to run hf porn horns and use the RMX 1850HD to run porn horn mids.

I have recently seen that second hand Turbo THL811's can be purchaced for around £500-£600 per cab and am wondering how 4 of these would compare with 4 sets of porn horns? They would rather neatly match the HD15's.

(http://www.turbosound.com/showroom/thl811/index.html)

4 x THL811 ~ £2000

X4 of all of these
     Porn Horn 12         &nbs p;£148
     P Audio SN 12B         &nb sp;£80
     Porn Horn 1.5         &nb sp;£42
     P Audio SD 740N         &n bsp;£158
     Other bits         &n bsp;£50?

Additional Amp         &nb sp;     £200
                      £1648

In the scale of things, the turbo stuff isnt actually that much more expensive than home made (and certainly a lot easier).

I can see there are probably advantages of both (active v passive, number of boxes/amps, potential rentability, etc)

What do people think?

Thanks, Matt

Your problem with the THL-811, would be that you would need something in between them and the HD15s. I've found the HD15s won't really go above 250Hz, and they are better if they croosover more like 200Hz

I would not want to use the THl811s below 350Hz. Leaves a gap which can technically be filled, but would sound arse.

With the Porn horns on a 12" rather than a 10", it should go lower.

Go for the Porns - it will more fun as well.

I am a touch confused by this, according to the datasheet turbo appear to suggest a crossover point of 180Hz for the THL 811's (to THL818's etc). The response graph thingys seem to show it looking ok....

http://www.turbosound.com/pdfs/thl811.pdf

Is there somthing I am missing or perhaps the HiLight series is different. Is it that the THL does go down to 180 fine but is distorted below 350?

Matt

Matieo,

Most flashlight systems use THL-2's, which are an 811 with a vented 15". I wouldn't go from a turbo double 18 bin direct to an 811 without something in between. I think the manufacturer is being a bit optimistic about the capabilities of their product!

Owen

Just to add, this is to be a 'party rig', so a bass heavy setup is what i want

Im still confused to be honest

The Turbo THL811 appears to be part of the THL4, not the THL2 as was stated. The THL4 has a 10" mid and horn loaded 18" (THL818?) bass, the THL2 on the other hand has a 6.5" mid and 15" reflex(?)

Ie the THL811 seems to be designed to go with the THL818 or 828 (double 18). The THL811 also appears to go down to 180hz (flatter to 200hz mind)

What my question really is now is what is wrong with the THL811 below 350Hz? Is it some sort of distortion since it seems pretty flat to 200Hz?