How To: Filter Simulation with VituixCAD and EQ APO

With meticulous passive filter design, it may be beneficial to hear the result before spending money on crossover parts and putting in the time to assemble the crossover. Fortunately, with VituixCAD and EQ APO and filter can be simulated digitally. This process can simulate multiple drivers simultaneously, one driver for each output on a soundcard, for example a 7.1 soundcard could simulate a stereo 3 way system utilizing 6 channels.

Note that an emulated passive filter will reproduce...

Here's a schematic for a simple dual channel measurement jig, which can be used with ARTA, REW, or SoundEasy. This jig is made with USB audio interfaces in mind, so the use of 1/4" TRS connectors is recommended for this purpose. Main reason is that the 48V phantom power on audio interfaces is only present on the XLR pins, so use of TRS will ensure that 48V will only ever be present when a mic is connected, not when using this jig even if you leave phantom power turned on.

R1 should...

What does single channel or dual channel measurement really mean, and what are the implications of choosing one over the other? This document aims to help answer this.
Strictly speaking, a microphone is a single channel of audio input, in that it is a mono signal. USB microphones which include integrated ADC and USB codec can be considered a single channel device.

Dual channel would be a measurement which includes a second channel of signal input in addition to the microphone....

Update: Since VituixCAD 2.0.98.6, exporting IR using windowing as described here is no longer required. the impulse response can be exported directly, make sure to uncheck "normalize" on export. VituixCAD will automatically set "skip samples" to 1m (2.907ms) prior to the start time of the exported impulse response to maintain correct timing on import.

REW can export the measured impulse response directly as MLSSA formatted text file, which can be used within the...

[Efalegalo]

Hi All,

I figured I've made enough progress that I can start to share build pictures. I've made a ton of cosmetic mistakes so far - but I've learned not to go out the way to point them out (lol).

It's been a challenge so far. Some comments for others that may consider this...

[YouTubeUniversi]

First time build. So far so good. Just have one tower left to sand and paint.

The paint is just polished Krylon from lowes.

Powering everything with a Pioneer SC-27 so it should be about 160 watts to each tower and 180 to the center. I would like to hear them with a separate...

[thehillboys]

Objective:
Well I am itching for a build and have these lying around and want to do something with them. The surrounds on the drivers are shot, and the crossover parts are 40 years old. I am thinking of reusing the cabinets and building a 3-way or something that will go down fairly low. I will...

[Mikerodrig27]

I just recently finished building the Bordeaux speaker kit by Jim Holt and Curt Campbell. It is a great kit with a great set of plans. Very refined and thorough. Jim was available to answer questions and took the time to Email me information as well as pictures of his build process.

They...

[Starlyte]

Hello to all of you. I'm new to a lot of what I want to do here, so although I have some knowledge in electronics and informatics, though only Linux and a little Android and Arduino, I'm a neophyte in Home Theater. I'd like to install a whole house system using Banana and Raspberry Pi's, with maybe...

[rsbonini]

So, as discussed in the ZDT3-5-sort-of-Duelund-crossover-design-I-hope thread, I was looking to build the Zaph ZDT3.5/ZD3C speakers but with the same tweeter Zaph used on his ZA5 series designs. Since I was in need of a decent centre channel, I chose to start with that.

I went a different...

[Supernova]

Hello all!

I wasn't sure where to put this within the forum but since it is somewhat of a DIY project I thought I'd post it in the Mission Possible DIY area, if this is the incorrect area mods please move it to the correct area.

I never intended to build my own amplifier...

[jesteele79]

Hello All,

I have read a number of build threads and it inspired me to take the plunge and see if I could build out a home theater room that could also play great sounding music of all styles. I am appreciative of the many email responses I have gotten from both Jim Holtz and Curt Campbell....

[Horio]

So after many many months of talking about building a pair of Wavecor Ardents and collecting many of the parts, I've finally come to the point where some actual progress on the cabinets is being made. This thread will track the progress of my build, however don't be surprised if my build goes a bit...

[here.now]

Hey folks,
Been a long time coming for me to DIY sub and have a need for something rare/good looking. I want a large dual open baffle sub to add to my setup. If not two curved cabinets for UM18s but wanted to build something different before i resort to a build that's been done before.
...

[aw818]

Hello everyone. Long time lurker, first time poster here.

I get it, the forum is filled with plenty of Statement builds so another one may be a bit redundant but before I took the plunge to make this speaker I reviewed pretty much any build I could find which helped build excitement towards...