Hello from France

[Eric 99]

Hello. I am a lover of music of all styles but very attached to the quality of the sound. I built my stereo little by little with as a base high-efficiency diy speakers: Supravox 16" EXC 11V in bass reflex 200 liters and compressions Radian 950pb with horns Araï 290FL. Dcx24-96 active filter, digital FLAC source on JRiver, separate bass-treble amplification.
After long months of study, tweaking and testing, I got a hi-fi system that works well, with superb bass and well-detailed treble, working on all styles of music. Today I feel the need to measure my installation, to see if it is consistent, and where I can make improvements (treatment of the room). REW seems to me to be the ideal tool for this

 

[mechman]

Welcome to AV NIRVANA Eric!

 

[chrapladm]

Hello Eric and welcome to the forum. Sounds like quite the setup you have DIY'd. What amps are you using for your treble and bass?

 

[Todd Anderson]

Welcome to the forum!

 

[NBPK402]

Welcome to the forum!

 

[Marzen]

Hi Eric

 

[Eric 99]

Hello, sorry for this long silence on the forum. I have little time because of work.

 

[Eric 99]

sorry for the horribly late response to chrapladm: the power amplifier for low frequencies is a Hypex Ncore 250 that gives 125W under 8 ohms

The power amplifier for high frequencies (Radian 950pb) is a clone of Nelson Pass' AmpCamp class A 2x15W

 

[Eric 99]

 

[Eric 99]

here a photo of the cabinet (diy) with at the bottom a 2000vA current symmetrizer (DIY too), the two laboratory power supplies for the excitation bass speakers, the DCX Behringer and an SRC (to add a turntable later)

 

[Eric 99]

all connections are balanced (neutrik) and cables of professional type but at a very reasonable price (Mogami, Belden, Canare). Everything is DIY

 

[Eric 99]

Regarding REW, it took me a long time to set up my sound card (Focusrite) and get the first curves. I am not at all an expert in computer science or acoustics. For the moment I have measured a response curve in the near field and at the listening area.

 

[Eric 99]

My approach was to make measurements of the speakers in near field, measurements of frequency responses of the bass speaker and the treble speaker, to check the cut-off frequency. Then I corrected the near-field curve by equalization with the dcx (and simulation in REW).

 

[NBPK402]

Looks GREAT! What is the A/B switch for?

 

[Eric 99]

Hello, the small A/B box is a speaker selector that was to be used for adjusting the length of the vents when listening. I've never used it until now.