4345 4355 networks

[Dr.db]

Is their any guideline to follow in picking up the correct coils/inductors ?
I have no idea what DCR values I should aim for.

When using air-core coils I´d get a DCR of about 0,1ohms for the 0,16mh coil.
Is this to high or too low?

[fencki]

hi.
i hopefully may ask one question about making a crossover for 4345?
can i use the crossover showing in the picture for 4344 mk2 (original the drivers were very similar except the woofer) with my following drivers?

2245h
2123h
2420
2405

in the picture there is no LF (2245h).

what should i change?

i am new to crossover building and hopefully the questions are not too .....



thx and best regards

[fencki]

or maybe someone can tell me which crossover would be the best compromise?

[jjt]

Hi Guys,
For the equivalent 3155 network, what gauges are you guys using for the 4 inductors (2.4mH, 1.0mH, 0.47mH, and the 0.16mH)?
and
I guess you have to order these directly from Solen? I don't see anyone else carrying all the sizes. Do you guys use any other sources?

Thanks

> Hmm, forgot about that thread ( thanks Paul ) ~

> Here's the network from that thread ( maybe it's not final / it is missing the Lpads );



Some Voltage Drives ;



Pic with Lpads in place ( showing impedance stabilizing coils ) ;

[Mannermusic]

Hi Guys,
For the equivalent 3155 network, what gauges are you guys using for the 4 inductors (2.4mH, 1.0mH, 0.47mH, and the 0.16mH)?
and
I guess you have to order these directly from Solen? I don't see anyone else carrying all the sizes. Do you guys use any other sources?

Thanks

The approx. "rule of thumb" per JBL engr. lab is to keep R < .6 ohms. Size as needed. Parts Express in Dayton has a good site with multiple suppliers plus accompanying specs, etc. My guesstimate would be 15 or 16 ga for the 2.4, 18 ga for the 1.0 and 20 ga for the .47 and .16.

[fencki]

can u please explain what is meant by "ga" in your answer?

[Dr.db]

I think this revers to cable diameter...

[Odd]

AWG to mm conversion

[Mannermusic]

can u please explain what is meant by "ga" in your answer?

gauge - wire diameter. See post #83 (thanks Odd).