erez

thanks for the help tigerwoodKhorns and JohnA. my first setup is same DHA2 bi amp. when i change to one amplifier, i here the brightness, so i thought its the bass power. according to the mic measurement, the mid k55v is fall at ~5k, so change to 2uf is not good. i try the L-pad

thanks Marvel today i try only SET amp, feel to me little bright, maybe its because i dont have autotransformer? how much 'db' down do you recommend? in bi-amp, i just balance with MIC.

you're right. k33 is 4 ohm and k55 is 16. have SET amplifier. need to decide between bi-amp with crown amp to the BASS 🤔 now i with mini DSP, and move to DHA2 crossover. thanks

build prototype of the DHA2. like @Marvel version. I'm wondering if this is dangerous for the k55v mid? the cutoff frequency is ~450hz and 6db/dec 😱 In any case, the sound is deep and with big soundstage

thanks i continue with the JBL

measure with white noise, put the horn in the same corner, 1m distance. 500hz cut. i think the jbl is more high level and more flat.

i don't know about the results, but the black widow is more boomy and punchy. here is the jbl vs BW in the same chart. the jbl is more high in the low mid (~200hz) the BW in more punchy (<100hz) measure at 1.2 meter normal level

ok' the wall is moving 😀

OK calibrate the mic and measure with high level (i have crown amplifier for the bass) with no music its 35 dB(z)

again, thanks. in high level, the jbl become more flat from 55-300hz, and the black widow the opposite. Attached distortion measurements

thanks Chris take the measurements from 40cm and low level. Attached measurements at a distance of 1 meter high level. It can certainly be seen that the black widow has changed. ZOOM

i think i know how to here distortion in high frequency, but how to do it in low frequency? add the distortion measurements.

hi I have been looking for a folded horn for a long time, I almost built one, many thanks for @garyeanderson.and then I found the peavey fh-1. buy it for 400$. with new black widow 1504. I understood from reading in the forum that the jbl2226 speaker is very high quality for folded horn, so i buy one, in addition to other forums they preferred it over the peavey black widow 1504. What do you think about the results? the black widow 1504 is little more punchy

Recently I am interested in building SACLA speaker, I purchased and built some horn and speakers, below are the results: K55v+YAMAHA H1230 horn K55v+K400 DIY horn K55v+LOMO KINAP horn JBL 2447 +YAMAHA H1230 horn with the JBL you almost don't need tweeter, but the titanium are noticeable. the k55v little more flat to 3khz, the JBL more round curve don't know what to decide. k55v or JBL2447. try the k55v with k77. change the level for visualize.

Hi, I'm trying to build the FH-1, does anything have a drawing? thanks

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If you have the schematics , I would be happy to get it

hi, start to build the La Scala speaker and wonder what crossover i need. i read about the classic AL-3 and about extreme-slope crossover 400hz cant find the schematic for the ALK ES400 I would appreciate recommendations for a first step k400 horn, k55v k77 jbl2226

its jbl 2447 > adapter 1.5" to 1" > k400 of course the build its only for testing.

thanks WMcD follow the link, and build test k400 from cardboard. the length is 48.5cm, i hope its not small. REW with 2447 jbl. the k55v is on its way.

build the k400 horn, its down to 300 with no problem.

thank build the k400 horn, its down to 300 with no problem. thanks

try to insert the dimension for k400 in the TRACHORN.EXE software: the fc is not close to 300hz 🤷‍♂️

hi, just buy k55v and love to build k400 for them. do you have the k400 plans? thanks

Last week I heard the la Scala horn, this is what caught me! The sound of the guitar coming out of the horn, I want one. I just bought a k55v for 250$. And I was thinking what horn can I build for him? i see k400 plans here. and read about Bruce Edgar Tractrix horn Am I in the right direction? thnaks