built myself a 3-way with 2235 / 2123 / 2435 / pt-h1010

[frank23]

hi,

I built myself a 3-way with 2235 / 2123 / 2435 / pt-h1010 today.

Having collected these drivers over the years and having used them (except the 2123) on and off in different 2-way settings, I decided I wanted to know what a 3-way with the 2123 sounded like.

So I designed some cabinets so that I could also use the cabinets separately (should I want that), got me some wood and started glueing, cutting, drilling and building. It is now 23.00 here, and I have one channel playing using the M552 as a single channel 3-way active crossover.

The 2123 probably has to loosen up some as they have never been used. Tomorrow I'll probably tidy up the back of the cabinet which is now fastened with wood clamps...

Now I have to find myself another M552 and build the other channel too!

I hope to have a measurement microphone and behringer ultra deq 2496 soon to see what the output measures like. For now it sounds ok.









Regards, Frank

[grumpy]

I would think this nice group of parts could be made to sound quite nice
Especially not needing to push the horn/driver so low (as a two-way would).

When you have time, perhaps you could post crossover settings and any
EQ (active or passive) that you found appropriate/listenable. Often the M553's
are nearly the same price as M552's, so you might keep an open view
regarding what is available.

A humble suggestion, if you already have a portable computer:
skip the ultra deq and get a mic-pre/usb converter. Or, if you were
planning on using the EQ facility of the unit, add the mic-pre/usb
later, as you will get far more visibility into what's going on with
an software analysis package than the RTA function of the deq box.

[Robh3606]

Hello Frank

Curious to see how you like the combination of drivers.

Rob

[demon]

very interesting...3way with the 10" mid, i bet it kills!!
be careful.. and keep us posted.

cheers,
mikey

[frank23]

I would think this nice group of parts could be made to sound quite nice
Especially not needing to push the horn/driver so low (as a two-way would).

When you have time, perhaps you could post crossover settings and any
EQ (active or passive) that you found appropriate/listenable. Often the M553's
are nearly the same price as M552's, so you might keep an open view
regarding what is available.

A humble suggestion, if you already have a portable computer:
skip the ultra deq and get a mic-pre/usb converter. Or, if you were
planning on using the EQ facility of the unit, add the mic-pre/usb
later, as you will get far more visibility into what's going on with
an software analysis package than the RTA function of the deq box.

I have set the crossover points at 150Hz and 3000Hz now. Also the m552 has the CC EQ configured for the high output.

What would be a better combination sound wise, buy another m552 and have dual mono, or buy one m553 and use one stereo (and have my current m552 free for other projects).

Do you have suggestions for the usb mic / software combination? I work on a mac, but can also use an XP laptop.

[pos]

150Hz is a bit low for the 2123, you will need some eq if you want to cross that low.
3000Hz is also a bit to high: the 2123 will beam too much at this frequency. The best is to choose a frequency at which the 2123 and the waveguide have the same beamwidth (ie 100deg) :
http://audioheritage.org/vbulletin/s....php?t=24621#5

Also the CD compensation build into the m552 is good enough for general purpose PA, but it is certainely not properly matched to this waveguide.

If I were you I would build Rob network (exact same component) for the top, and try the m552 to biamp with the 2235 coming somewhere between 300 and 400Hz

[frank23]

150Hz is a bit low for the 2123, you will need some eq if you want to cross that low.
3000Hz is also a bit to high: the 2123 will beam too much at this frequency. The best is to choose a frequency at which the 2123 and the waveguide have the same beamwidth (ie 100deg) :
http://audioheritage.org/vbulletin/s....php?t=24621#5

Also the CD compensation build into the m552 is good enough for general purpose PA, but it is certainely not properly matched to this waveguide.

If I were you I would build Rob network (exact same component) for the top, and try the m552 to biamp with the 2235 coming somewhere between 300 and 400Hz

ok, I'll try some other crossover frequencies and see what the result is, luckily it only takes the turn of a knob, ready in a few seconds

but since my goal is to have one driver cover the whole mid without a crossover in critical areas, crossing over at 1500Hz will be too low for that goal, but I'll experiment

I know the CD compensation is not optimal, I hope to get an RTA measurement device soon and see if it tells me the same as my ears

[grumpy]

Mac software... I've been pleased with FuzzMeasure. Their web site has
some usb/pre and mic recommendations.

I concur with 'POS', in that ultimately, you may want to consider a passive
network for the mid/high transition and to EQ the horn/driver.

M552 vs M553? seemed like if you could find an M553 at the same or similar
price, it would be a win-win.

[Russellc]

hi,

I built myself a 3-way with 2235 / 2123 / 2435 / pt-h1010 today.

Having collected these drivers over the years and having used them (except the 2123) on and off in different 2-way settings, I decided I wanted to know what a 3-way with the 2123 sounded like.

So I designed some cabinets so that I could also use the cabinets separately (should I want that), got me some wood and started glueing, cutting, drilling and building. It is now 23.00 here, and I have one channel playing using the M552 as a single channel 3-way active crossover.

The 2123 probably has to loosen up some as they have never been used. Tomorrow I'll probably tidy up the back of the cabinet which is now fastened with wood clamps...

Now I have to find myself another M552 and build the other channel too!

I hope to have a measurement microphone and behringer ultra deq 2496 soon to see what the output measures like. For now it sounds ok.









Regards, Frank

Nice, I would like to try the same type of thing. Also have the 4507 box and NOS 2123H drivers. will use 2425H and 2344a and 4430 HF comp however.

Russellc

[4343]

Nice, I would like to try the same type of thing. Also have the 4507 box and NOS 2123H drivers. will use 2425H and 2344a and 4430 HF comp however.

Russellc

That's almost the route I'm taking, except the box so far is designed to house everything. Might change that before I put it together after seeing the two-piece design. I'm working on a sub for one of my three 2235H's now, so maybe I'll try it with the 2223H and 2344 in a separate cab before I commit to the all-in-one box...

[Russellc]

150Hz is a bit low for the 2123, you will need some eq if you want to cross that low.
3000Hz is also a bit to high: the 2123 will beam too much at this frequency. The best is to choose a frequency at which the 2123 and the waveguide have the same beamwidth (ie 100deg) :
http://audioheritage.org/vbulletin/s....php?t=24621#5

Also the CD compensation build into the m552 is good enough for general purpose PA, but it is certainely not properly matched to this waveguide.

If I were you I would build Rob network (exact same component) for the top, and try the m552 to biamp with the 2235 coming somewhere between 300 and 400Hz

What is the " Rob net work" for these components?

Thanks inadvance, Russellc

[Russellc]

That's almost the route I'm taking, except the box so far is designed to house everything. Might change that before I put it together after seeing the two-piece design. I'm working on a sub for one of my three 2235H's now, so maybe I'll try it with the 2223H and 2344 in a separate cab before I commit to the all-in-one box...

I have the 4507 box for 2235H, so I'm thinking of a 2 piece design as well.
That knock down parts express box may be perfect for this! (Except for the 12 inch hole. there's plenty of room to add another front baffle over it with a hole for the 10 incher!)

russellc

[Zilch]

I believe we have been here recently:

http://www.audioheritage.org/vbullet...603#post249603

[pos]

What is the " Rob net work" for these components?

Thanks inadvance, Russellc

It is the network Robh3606 is using in his similar design.
I believe he posted it somewhere on these forums.

[pos]

no, I though you had posted your 2123+2435/PT-H1010 network somewhere.