JBL 4343 build.....

[Mr. Widget]

For clarity, this is what I was talking about. It is identical to what JBL was using in the 70's and 80's monitors.

http://wrap-on.com/product/bulk-roll-fiberglass/


Widget

[ARMED]

i have my barzilay's old foam/fiberglass im gonna use for the dog house...and the back if it...

[ARMED]

3143 crossovers DIY

[ARMED]

the crossover is roughly 9x12 inches...
it will have 2 inputs, 1 for low and 1 for mids/highs..


is the schematic/layout ok? i cant find anyone to build me a charge coupled 3145..so im doing 3143

[ivica]

the crossover is roughly 9x12 inches...
it will have 2 inputs, 1 for low and 1 for mids/highs..


is the schematic/layout ok? i cant find anyone to build me a charge coupled 3145..so im doing 3143

Hi ARMED,

What about coils mutual coupling in Your topology ?

reagrds
ivica

[ARMED]

no habla....what do you mean

[grumpy]

Put them at right angles to each other so they have a harder time talking to each other.
No habla indeed

[ARMED]

i hate it when someone ask question and youre intoxicated

yeah i think i read about it before like if youre using coils, it needs to be perpendicular to each other, like if you look in the hole, you shouldnt be able to see another coil's O hole. (standing)something about the magnetic field interference..something like that...im a noob...my bad...shits too late...its glued and done! I think its far enough
eh...i wonder if its really gonna make a big difference, like something my ear could hear

[grumpy]

One person's subtle is another's "huge" difference. You've placed them fairly far apart, which also helps.
If you do any mods later though...

[ARMED]

i apologize gents, a friend had to build it for me..
sorry i didnt make that clear, i dont want to claim someone elses work..
anywho....its done....i was a little scared to do it myself... didnt want to blow my amps...
thats the only thing that i didnt do...

[ARMED]

anyone knows where to get the knobs for the L-pads? the sign shop from ebay doesnt have anything for sale

[berga12]

why you don't build beech Knob starting from a cilindric stick of 12-15mm (I don't know real knob dimension)....

If you keep "clear" outside like mine 4355, the wooden knob should look really nice. and beech wood is really hard.
beebeech

[ARMED]

i might do that, just to try... i have a block of mahogany..

[ARMED]

got this from italy...
the picture is a little dark...(dark room)
the guy from italy gave me 3 copies also!!!
cool guy

[ivica]

i hate it when someone ask question and youre intoxicated

yeah i think i read about it before like if youre using coils, it needs to be perpendicular to each other, like if you look in the hole, you shouldnt be able to see another coil's O hole. (standing)something about the magnetic field interference..something like that...im a noob...my bad...shits too late...its glued and done! I think its far enough
eh...i wonder if its really gonna make a big difference, like something my ear could hear

Hi ARMED,

Sorry for upset You, ....but I have understood that You have put a question:
"....is the schematic/layout ok?...."

May be it would be better to answer to Your question directly, and the answer would be:
NO, Your layout is NOT OK, due to the coils mutual coupling.

If You want to use coils with the iron core, near each other , You have to prevent the 'magnetic fields line' from one coil to pass through another. So use cores that are ALMOST 'closed as ring' (with the proper large) air-fissure, that would protect iron-core to saturate.

I would not expect that You can her these interference, but what "would drivers see" ???? I do not know.
regards
ivica