Not just Lundahl here, I also ordered custom choke from Jack/Electra-Print. I contacted Jack and asked him to create a Choke, with requirement to be placed in Input position. He offered me a VPI technique which (according to him) enough for Choke Input application. Other requirements was a “jimmyauw.com” standard which mean oversize construction (M6 lamination, 30H/75mA).
Top appearance of the choke. Not much different with typical choke, although this one cost a lot more.
Jack you should try to add some unique label to differentiate your choke with other “el-cheapo” one 😉
Choke measured with my cheap L/C Meter. Not bad, measured around 32H.
DCR measured with my Sanwa Multimeter, the readings around 232 Ohm.
I have one more choke left, the Sowter one. Will see when it will arrive.
eherdian
July 13, 2011 03:07cepet2 di coba pa Jimmy…
mau tau hasilnya, btw sy juga pesan OT ke Jack Eliano, belon sempet coba, he’s a very good man and cheap shipping cost from Las Vegas 🙂
1 lagi mau nanya but oot, sy ngebangun loudspeaker fostex 206 ne dg backloaded horn, karakter suaranya agak harsh meski sudah di modif pakai phase plug kayu + rangkaian LCR, ada cara lain untuk ngakalin?
Auw Jimmy
July 13, 2011 11:46Santai aja, saya juga pesan ke Sowter dan Lundahl koq… Beragam lah.
Definisi “harsh”-nya seberapa nih? Mungkin bisa coba ganti kabel.
Thanks.
eherdian
July 13, 2011 20:05cenderung cape kuping pak, kabel daleman sy pake neotech 14 AWG solid cooper, agak sulit ganti kabel nih pak
LCR sy pake induktor solen, C mundorf supreme, R MOX
Auw Jimmy
July 13, 2011 23:25Coba ganti dulu tuh Solen, MCap Supreme, dan MOX-nya ama yang lain… Kayanya ga cocok deh karakternya…
Thanks.
eherdian
July 14, 2011 02:52ok, sy coba dulu deh,
thx u advicenya