SDA SRS 3.1 TL inductor DCR

cincycat13

Ok, I have searched and read and have come up short so I am posting.


https://forum.polkaudio.com/discussion/138234/inductor-dcr-insanity-for-sdas/p2

http://www.jantzen-audio.com/wp-content/uploads/2013/04/Air-Core-Wire-Coil-Values-10.12.2018.pdf

This XO has 4 inductors per board.
The 22 gauge 0.3mH has a DCR of 0.544
The 18 gauge 1.0mH has a DCR of 0.7

Does anyone have the values for the 18 gauge 1.25mH?

Then I learned there was an A and a B version with one using 20 gauge and the other 22 gauge for the large 18mH. Any suggestion for this? The jantzen C coil design looks affordable if it is an ok application?

Thanks if anyone knows where the missing values would be published.

honestaquarian

@VR3
@westmassguy
@gimpod
@DarqueKnight
@F1nut
Any of them might have the information you need or could send you in the right direction.

DarqueKnight

@VR3 has just completed a 3.1TL crossover build.

https://forum.polkaudio.com/discussion/186706/3-1tl-build#latest

VR3

1.2TL
1MH 18awg 000-1239 Air Core
2MH 20awg 000-1062 Air Core
.4MH 22awg .598 DCR 000-1171 Air Core
.7MH 24awg 1.25 DCR 000-1046 Air Core
16MH 14 Awg .16 DCR 000-6577 C-Coil

SDA SRS
.4MH 22awg .598 DCR 4 000-1171 Air Core
.7MH 24awg 1.25 DCR 2 000-1046 Air Core
2.7MH 18awg .92 DCR 4  000-1307 Air Core
16MH 14 Awg .16 DCR 2 000-6577 C-Coil


3.1TL
.3MH 22 Awg .5 DCR 2 000-1454 Air Core
1.25MH 18 Awg .48 DCR 2 000-1626 Air Core
1 MH 18 Awg .48 DCR 2 000-1239 Air Core
18 MH 14 Awg .17 DCR 2 000-6595 C-Coil


Polk Audio SDA 2.3
0.4 22 awg 000-1171 4 Air Core
2.5 22 awg 000-1119 2 Air Core
1.25 18 awg 000-1626 2 Air Core
16.8 14 awg 000-6579 2 C Coil

cincycat13

VR3...thanks so much!

It's been a number of years since I did my 2.3 with sonicaps and gimpod boards. It will make it simpler if I dont have to tear apart the current boards to start the project so I can take my time.

Now I just have to decide of brand of caps and gimpod board or point to point. The sonicap / board method may be more my speed.

westmassguy

cincycat13 wrote: »

VR3...thanks so much!

It's been a number of years since I did my 2.3 with sonicaps and gimpod boards. It will make it simpler if I dont have to tear apart the current boards to start the project so I can take my time.

Now I just have to decide of brand of caps and gimpod board or point to point. The sonicap / board method may be more my speed.

Tony's boards make it real easy.

JayCee

@VR3

Hey Trey,

You still a Jantzen reseller? If so, I'd like to send some business your direction vs. Parts Express...always nice to keep it in the CP family .

Picked up a pair of 3.1tl's a few weeks ago and am redoing XO's. Would like to order a full inductor set if you're still able to do so. Please shoot me a PM if it's doable.

Thanks,

John

VR3

I currently source my inductors from hificollective, they give resellers a small discount but not enough for me to take orders. Their prices were actually similar to what parts express was giving to commercial, but that was a long while ago I compared the pricing.

Thank you for the thought though 😊

JayCee

VR3 wrote: »

I currently source my inductors from hificollective, they give resellers a small discount but not enough for me to take orders. Their prices were actually similar to what parts express was giving to commercial, but that was a long while ago I compared the pricing.

Thank you for the thought though 😊

Was worth a try. Thanks for the reply.