Arash

I second above statement. I'm into business here and we buy directly from most European companies like Faital pro, Beyma, BMS, B&C, 18Sound. some of Beyma drivers are at top of the line. the LX series are real killers when you need real bass in compact package. 12P80ND-V2 is a 12" mid driver that can compete with good horns. some other weeks ago I was thinking on a Cornwall-like speaker with a 12P80ND-V2 driver instead of the midrange horn

"I have a dream..." Isn't here a Klipsch dealer in China?!

I may be able to pay the cost if it's reasonable so maybe one of you guys could ask how much would it cost

welcome to the forum you can probably consider the Jamboree. it's pretty easy to build. I've built it before link

I was checking Faital Pro CDs and ran into HF20AT. I don't know why everybody is using HF200 as HF20AT is obviously a superior driver and can deliver better top end HF200: HF20AT: (just wow!)

The motor is at a constant speed when operating. Understood. This is also why rotary subwoofers are 20 Hz and lower. It is my (limited) understanding that distortion will dramatically increase as the input frequency exceeds the rotation rate of the fan, and also that the fan needs to spin at about 1200 RPM for 20 Hz. the rotating speed doesn't have anything to do with frequency. you probably have seen woofers slowly moving playing for example 10hz? but no sound? they are actually making sound but the sound pressure is so low/small you can't hear. you also have probably fanned yourself by your own hand in hot weather. your hand shakes actually ~4-5 times a second so you are making sound in that frequency but still no sound due to weak impact. this subwoofer is also the same as the hand if the rotary motor is off. the blades go back and forth but no sound is audible. as long as everything is rotating at high speed the little impact produced by blades will be much more stronger than before thus the audible sound is produced.

hey guys I was thinking about starting a project to build a rotary subwoofer capable of delivering frequencies 1hz up to ~30-35hz @ ~120dB levels and I'm submitting this threat like all other my projects to have a timeline archive for futures. I want to hear your ideas about it. oh BTW Eminent Technology has invented this subwoofer before and it works: I'm a big fan of watching movie in big screens and with big and dynamic sound of horns but hearing below 20hz is something more sinister. as a beginning I just ordered this flybarless that is able to change the angle of five blades at the same time. I'm gonna use it to transfer the movement of a voice coil to the blades rotating 800RPM http://www.aliexpress.com/store/product/5-Blades-Flybarless-Quad-Bladed-Main-Rotor-Head-For-T-rex-450-Helicopter/700028_2033589307.html

I know I know but I've worked with some other similar drivers like TPL-150/H and TPL-200/H and some Fountek ribbons. 10 degrees @ 12khz is very narrow I'm not sure if I've seen a similar dispersion pattern in those tweeters. maybe I'm wrong I don't know

the vertical off-axis response of G1 is too narrow to be true! 10 degrees? really? I wouldn't use something like this as I don't want to tie myself to a chair and listen to music

Where do you find $145/each? for OEM and a minimum order of 20 pieces. I think we can arrange a group buy if ten of you guys from US need this ribbon and can handle the customs

correct 2016 price: Oh damn! G1 is listed $225/each! I have to order some

in this case if you know the exact dB of attenuation you need the best way is to build an autotransformer. it's like an inductor with a center tap. I can calculate it for you if you can wind it

if you have a measurement mic just measure the frequency response once in single amp mode. than bi-amp and try to set both amps volumes to get to the relatively same levels as the first frequency response you just got. if you are using an active XOver there might be a gain option you can compensate the output of each channel. you also can put a dummy load at each amp output and measure the voltage and set the volume for a same RMS output. you should use P=V^2/R

oh it's an old story. the polarity of one of the woofers were inverse (I had not connected them it was a friend's speaker) leading to weak bass. the placement was also wrong as you mentioned. the McIntosh stuff also sounded crappy IMO

I've used Beyma TPL-150H with Klipschorn and LS with stunning results but with the cost of 4-5dB lower sensitivity. TPL-150H is so directive but sounds great on-axis. the spaciousness of the sound is amazing with this driver. off-topic but I've heard a very tempting sound by combining TPL-150H with 12P80ND-V2 also from Beyma. just add a good woofer below ~100hz and you're almost there. sounds like 100K+ speakers IMO by the way the best horn tweeter I've heard so far is Faital pro HF108 with a Faital pro STH-100 elliptical horn, not mentioning Fostex T500 AMKII

I'm wondering how TAD sounds behind a K402. should be impressing. any comment on this combination yet?

I've tested a dozen of horn tweeters from CT125, K77 (EV T-35), CP-25, DE250, D32 and alot more. the best horn tweeter I've heard so far (under 500$) is Faital Pro HF108 with a STH-100 Elliptical horn. it's drop-dead gorgeous. CP-25 was my favorite before I heard HF108. Greg Roberts uses this driver with 18Sound XT120 on his horn speakers. 18Sound XT120 is very similar to Faital Pro STH-100 horn

Chasing the Dragon Audiophile record by Mike Valentine is a killer. selling every speaker is possible if you have this CD!

buy Hypex DLCP and 6 x UcD or NCore amps and enjoy!

use a pure sine wave AC regenerator and hear the difference. Powerinsipired makes some good AC regnerator we use here. sounds is more relax and accurate than before http://www.powerinspired.com/ag1500-ac-regenerator-1500w-psu-shucko-p-1754.html?osCsid=5b8fe885bd68ba886412b7eeb147ba14

PCM1704UK is the best DAC I've ever heard. the most analog-sounding in fact. I use Audio-GD Master-7 which is an ultimate design based on eight 1704s. it's the best DAC device I've heard so far among some dCs and Nagra DACs. it sounds out of this world. you won't believe how good this 15kg device sounds.

I would like to hear PSE-144 and K402 in a A/B test. I think PSE-144 will outperform K402.

does anyone know if it is possible to put K402 in a 3D scanner?

quadrokot, your job is fantastic. pure art. could you provide us some details about K402 profile or the plan so we can try our skills?

Oh I'm dying here! I want to build K402 out of wood. please someone come up with a plan. I have a big vaccum press. it's pretty easy to form some layers of 1/8" plywood on a mold using vacuum press.