Recent content by WingNut

If you're up for a bit of basic assembly, try building your own with fully populated boards from Tom Christiansen at Neurochrome. It won't be cheap, but you will hear a difference.

Sorry for coming to this a bit late. I was interested in an MRX720, but I wasn't even aware of the sale until it was over. I approached my local dealer and he said he would give me the sale price anyway. Worth a try and might be quicker.

Yes, that's what I'm doing, but it's ending up more like a guide to speaker design and measurement!

The list is fine, it's just the dog-leg shape of the top edge of each one that gets me. For me, a straight upper edge like a plain index card would be preferable to a tabbed upper edge.

Hi, John. I'm an occasional, non-expert user who has long breaks between short periods of intensive use. This means that I forget a lot and have to re-learn each time. I can spend a couple of frustrating days setting up my equipment and trying to get my computer, sound card, miniDSP and REW to...

How's this...the green is the previous test and the brown in the new one: I increased the microphone input level to 100 in Windows Control Panel > Sound and then reduced the REW sweep level to -30 dBFS to eliminate clipping. This has had the same effect on my driver sweeps: cleaned up the...

Thanks for the diagnosis...you are spot on. "Listen to this device" was checked in the microphone recording levels dialogue box in Windows Control Panel > Sound. I'm neither a computer guy nor an electronics guy, so I much appreciate your help. The resistor now looks like this: Re-testing my...

Here's the trace for a 10 Ohm resistor: Ambient noise is 20 dB this morning with the resistor. It's 32 dB when measuring a driver - I think the difference is my computer's cooling fan. Edit: I should have mentioned that ambient noise is usually around 50 dB during the day when measured with...

These are the woofer numbers (with the Re problem): For good measure, here are the midrange numbers: Although the T-S parameters have improved, they are still sometimes a long way from the manufacturer's figures. For example, Fs for the midrange is showing as 297 Hz - more than double the...

Yes, if I open the signal generator first, the low input level message doesn't appear. Thank you. The "Insufficient High Frequency Data" message has gone too and the T-S parameters are now making sense. I've run the T-S measurements on my woofer and get a message "DC resistance figure may be...

I was using V5.19 "with JRE" (my OS is Windows 7 Pro). I have now installed V5.20 Beta 2, which seems to have up-dated the original installation. However, when I check levels prior to an impedance measurement, I now get a "Ref Input Level Low" message. My connections are the same as previously.

Hello, I'm a recent new user. When running free-air measurements to calculate the T-S parameters using the added mass method, I get a message when I start the calculation telling me that there's insufficient high frequency data. I'm setting the upper end of the sweep to 20 kHz. What am I doing...