Series xover design

[ronjg]

I would like to build a small 2 way MTM speaker and incorporate a series crossover. I can only find limited information on series xovers and I'm wondering if anyone has any real experience or knowledge using them. Any help would be appreciated

[Jocko Homo]

E-mail me, so I don't annoy everyone with my rant.

jocko.homo@juno.com

[Won]

Actually, I'm curious what you'd have to say, unless your rant involves getting all personal-like...

Isn't that the point of the forum? So when someone else has the same question, you only have to rant once?

-Won

[Peter Daniel]

Here is a link: http://home.iprimus.com.au/gradds/se...ross-overs.htm

[Peter Daniel]

Here is another. It used to be in English, for some reason now it appears in Danish: http://www.lcaudio.com/dele.htm

[Jocko Homo]

None of it was "personal-like" but had little to do with audio, and more about stuff we did in the 60's.

Basically, it only works if you have a resistive load.

Jocko

[sianturi]

You might find this useful:
http://www.acoustic-reality.com/ar-sxo.htm

The designer shows how to tune the xo, but the method used is based on trial & error methodology. I haven't tried the xo, but I am going to give it a shot someday. I'd like to try this serial xo on Lynn Olson's Ariel speakers.
Say.... has any soul in this world try serial xo on Lynn Olson Ariel speaker?

-The Great Saiyaman-

[planet10]

With the right drivers -- and they are critical -- these can provide superb performance.

The series XO guys hang out here if you want to talk to the guys with lots of experience.

dave

[dwjj]

Here's a couple more sites, analysis, examples:
http://www.geocities.com/kreskovs/John1.html
http://www.t-linespeakers.org/tech/filters/diaural.html
http://www.madisound.com/cgi-bin/dis...gi?read=189682

gr-research has a couple of kits with sxo
http://www.gr-research.com/

[navin]

I am planning to build a smal speaker with a small sub (if you can call a 8" woofer a sub).

The small speaker will have a 6" Vifa woofer and 1" Vifa tweeter (models TC18WG49 and TC26TG05) the specs can be got from http://www.d-s-t.com/vifa/index.htm.

below this speaker I intend to add a small 8" woofer (active).

The 8" will provide bass reinforecement and also compensate for some difraction loss. The 8" woofer is a repaired Eminence woofer approx TS specs are Fs=35Hz and Qts 0.45. The cabinet of this woofer will act like a stand for the 6" 2 way described above.

1. can I use a 2ay 12db series XO with the Vifa drivers.

2. To make the cabinetry simple I intend using 4'x8' sheets of MDF and making the height of the speaker 4' (48"). Is this too tall? Should I put the 6" on top of the 1" so that the 1" can be closer to listening height (36-38").

3. At what height on the baffle should the 8" be? Roy Allison claims it should be as close to the ground as possible, else where I hear the center of the bass driver should be 16" (40cm) from the ground. And my common sense tells me it should as close to the 6" 2 way as phyisically possible so that all the sound is coming from as small a point as possible.

4. I intend to bend the cabinet side walls a la Sonus Faber Amati and Wilson Benesch Act 2. How thick a MDF can I bend. If the MDF is less than say 8mm (so that it is easier to bend) should I use layers. If I am using layers can I use lead sheet 2-3mm between the layers?

5. I intend to bolt the drivers to the cabinet instead of using screws as I want to integrate the drivers as solidly to teh cabinet as possible. Does is make sense to veneer the cabinet so that the bolts are covered/hidden. What are chances I burn a woofer or tweeter out. Usually I hear only tweeter burn out.

6. The baffle will be 30mm MDF. Since I am bolting the drivers shold I use a 3-4mm metal plate on the inside of the baffle so that the bolt does not bite into the wood?

7. I intend using a truss rod for each of the 6" and 8" drivers. The truss rod will be a plastic or metal tube filled with either lead shot, sand or thermacol pellets. Which combintion wouldone recomend?

Since I do not have regualr access to the net please email me at navin@vsnl.com

Regards
Navin