Recent content by xmag

It's a beta version. I'll adjust it over time. The calculation is done against a wall, not completely free. I probably missed writing that. Of course, it cannot be exact with actual measurement in a non-reflective room or outdoors (with a wall behind). But the measurements I and a few others...

THANKS! When I have time, I will explain the function.

Have I placed the thread in the wrong forum section? Yes, I think I did! I must have clicked wrong but meant right. If so, maybe an admin can move it to the correct section?

When measuring speakers inside your room with REW, a frequency curve is created that has huge throws in the bass. At the lower frequencies, the measurement result is not correct due to reflections, standing waves and close to solid surfaces. Matrosim is intended to remedy this by simulating the...

UPDATED: New address, brand new Matrojig https://www.exmag.se/250109-matrojig-s-hogtalarmatning/ https://www.exmag.se/ Special box to keep everything in one place: I don't have time to write everything about this. Check out my website for more information...

I bought a DELL laptop to measure speakers outside the home.. It didn't work with asio4all. Sweet online and saw this thread. Now it works- Will switch to flexasio on the other computers too.

This confirms that I am blind :( ! Thanks, John! I will read and learn!

As the thread topic: Feedback loop what exactly does it do Can't find anything about it in the manual that explains exactly what the loop does.

How to remove both ripple from switched power supplies and "motorboating" from battery operation and switched power supplies with ripple filter: Before ripple filter: After ripple filter: I have run an RTA in REW with a microphone to include the microphone amplifier in the...

Now I know what the error is: It is known especially in tube amplifier builders. The phenomenon is called "motorboating" = https://www.electronicspoint.com/forums/threads/motorboating-what-exactly-is-it.267151/ In addition to the fact that tube amplifiers can suffer from the problem, ordinary...

Now I know what the problem is: It is known especially in tube amplifier builders. The phenomenon is called "motorboating" https://www.electronicspoint.com/forums ... it.267151 / In addition to the fact that tube amplifiers can suffer from the problem, ordinary amplifiers with battery operation...

Yes, I will try to pull completely separate power supply wires when I have time. When I connect the power supply and disconnect the batteries, it works perfectly. But switched power supply gives disturbances over 3 khz. The power supply is connected from the outside through a power socket. I...

I first thought it might be so. Has connected signal earth and power lines in different ways to test. No difference. Signal ground has no closed circuits, everything starts at central signal ground and ends where it is needed without going anywhere. The power wires go straight from the battery...

Now I am really confused, it will be the same result with batteries as with power supplies and DC filters. If I remove the DC filter for the power supply , the measurements will be good (but higher distortion over 3kHz). But with batteries, I can not solve the problem of removing DC filters...

Have now rebuilt my test-Matrojig to battery operation. 10 AA batteries 1.2v at 2800 mAh becomes 28Ah. A few days should be enough to measure before the batteries need to be charged. It became cheaper than building a line power supply. Will return with measurement results later.