2405H Question

[scott fitlin]

I would use an 18db roll off for the horn, same as the HP filter for the tweeters. A 6db roll off for that horn will be too much overlap between the horn and tweeter.

[sourceoneaudio]

Thank you Mr. Scott.
When I sent the reply and included the 6db roll off idea I realised that was probably not the smartest thing to do. Probably sound kinda nasty eh'.
Thank you again for the help. I want to get it right the first time since the finisehd product is so heavy. Taking it up and down off the TV is a two person job. The cabinet will either be double layer 3/4" or 1" stock in the upwards of 150lbs. when done. A back breaker at that.

J/S-S1A

[Mr. Widget]

...and I'm thinking of re-configuring my center channel and I want to use this as a super tweeter 10k and up 18db per octave cut off. What are the power limitations going to be?

You will be fine... definitely use a padding system of some sort, an 8 ohm L-pad would be the simplest. It really doesn't matter what amp you use... the rest of your speaker system will be most affected by the power available from the amp. Build your network with an adjustable pad and enjoy. On the other hand, if you are after SPLs greater than 120 dB then, you'll entering into the danger zone... both for your hearing and for the tweeter's life expectancy.


Widget

[scott fitlin]

Thank you Mr. Scott.
When I sent the reply and included the 6db roll off idea I realised that was probably not the smartest thing to do. Probably sound kinda nasty eh'.
Thank you again for the help.

J/S-S1A

Well, what happens is that there will be phase difference between a 6db and 18db slope. Then, if the horn doesnt roll off steeply enough where the tweeter comes in, you wind up with too much sound around the crossover region from the horn, and the tweeter doesnt sound as apparent.

[sourceoneaudio]

Well, what happens is that there will be phase difference between a 6db and 18db slope. Then, if the horn doesnt roll off steeply enough where the tweeter comes in, you wind up with too much sound around the crossover region from the horn, and the tweeter doesnt sound as apparent.

Yes, I think that would be most evident, and NASTY .

Mr. Widget,
Thank you for the tip. I'm not seeking that kind of SPL though I do like it loud. About 1hr is the limit to high levels in the HT room after that the headache sets in from the SPL levels, the system plays very loud and very clean. So I know I'm getting up there in the upper SPL range. One day I will measure it, because I'm curious. With the addition of the 2405H I'm seeking a detail addition to the center channel configuration, like I said in a previous post, I've heard it and really liked it. So I think I'm on the right track. Thanx again for the control tip.

J/S-S1A

[Allanvh5150]

Years ago, when I was a sound engineer for live bands, I used a 2402 and 2405 in the same box driven with a 500 watt amplifier. They just sat there and sizzled. The 05 was a beautiful driver, but alas, it has gone. Long live the 2405!