4 way.

[matsj]

Next project this winther:

mats

[matsj]

One moore pic:

mats

[pos]

looks nice!
2245 and 2123? What other drivers are you going to use?
What is the internal volume?

[matsj]

2450 with SL dias, 2311+2308, 2405 and the box is 4345.

mats

[Mr. Widget]

It is quite remarkable how 5 years ago the 4345 was only a footnote in our Lansing Heritage textbooks and today several members own originals and quite a few have built exact copies or derivations of them.

It is certainly a fine system and I am glad to see that this rather rare system has become so popular. I haven't heard any of the clones, but I am sure that if they are careful copies of the originals as many are they will be equally outstanding. I am not sure if your 2" driver mod will be an improvement or not, but since it is a bolt in replacement there is certainly no harm in giving it a whirl. If you are planning on using the 3145 network, I would try to track down a pair of 2122s.

If you are not intending to build 4345 clones, I'd suggest you encase these cabinets with 19mm birch plywood. On larger cabinets I usually go this route and it really solidifies the bottom end.


Widget

[matsj]

These will not be clones, just look a like . I´ll go fully active with 4x5 watt diy amp + another class A amp + a Crown K2.

mats

[pos]

Hi matsj
How is your project going on?

[matsj]

Hey pos: My 4 way project is laying still over the summer because of no time left for it.

My boss/ friend died in a motorbike accident in april so i got involved with his two kids and a lot of work.

I´m only working on my K2/array project and Pass Labs Diy amps at the moment.

mats

[Chas]

no harm in giving it a whirl. If you are planning on using the 3145 network, I would try to track down a pair of 2122s.
Widget

Yes, or look into the 2123 with a cc'd 4344MkII style network. I tried it and it's very worthwhile!

[pos]

Yes, or look into the 2123 with a cc'd 4344MkII style network. I tried it and it's very worthwhile!

But pushing the 2245H to 340khz could be a problem.
I am facing the very same situation.

[Chas]

But pushing the 2245H to 340khz could be a problem.
I am facing the very same situation.

Actually, I used the 2123 to 290 Hz and had no pronounced issues. Conversely, I doubt that running a 2245 to 340 Hz would be a big deal, either.

Of course, some folks like to split hairs.....

[pos]

So you did a modified version of the 4344mk2 network for a 290khz crossover point? If that is the case I would be interested in knowing more!
What modifications did you made?

[Chas]

POS, all I did was remove the passive high pass section because I biamp, anyway. Nothing fancy, at all.

[matsj]

A few months after i started this project i found a pair of L300 Summit speakers for sale here in Sweden, so i´ll not make these finnished.
I´m going to keep my 2245 and maybe building 2 B460 to my L300.

mats