That's not supposed to happen. The only thing that should happen / change when you click upload to DSP is that it says "upload successful" or something to that effect.
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Help me convert old speakers to actives
- Thread starter AlmaAtaKZ
- Start date
That's not supposed to happen. The only thing that should happen / change when you click upload to DSP is that it says "upload successful" or something to that effect.
- Thread Starter
- #322
Figured that out. The reason for disappearing was disconnecting the USB when switching the Hypex unit.
I find HFD the least challenging software in this project, and VituixCAD the most challenging.
I find HFD the least challenging software in this project, and VituixCAD the most challenging.
- Thread Starter
- #323
I will be having another go at measurements in a large room (local church) end of May, hoping to produce a set with wider gating (compared to my small flat). My confidence level is very low, though.
If someone in London is willing to join and help, that would be greatly appreciated and rewarded with endless supply of food and beer
If someone in London is willing to join and help, that would be greatly appreciated and rewarded with endless supply of food and beer
- Thread Starter
- #324
What could be causing these dip and peak on the tweeter? They are even more pronounced on the nearfield measurememts.
Files are here
https://audiosciencereview.com/foru...rt-old-speakers-to-actives.54575/post-2284024
Files are here
https://audiosciencereview.com/foru...rt-old-speakers-to-actives.54575/post-2284024
Is one of the tweeters out of phase? What order crossovers between mid's and tweeters?
- Thread Starter
- #327
This is single speaker single driver and no crossover.
It's an internal reflection from the waveguide. Not uncommon for waveguide-loaded domes.
Unless you plan to listen with your ear just a few cm from the tweeter, the nearfield response is basically irrelevant. Since the dip is fairly narrow and at a high frequency, it may not be audible at all. If you choose to equalize the dip, I'd suggest using the listening window (in this case, the RMS average of -30° to +30° horizontal in 10° or 15° increments would work fine) rather than just the axial response.
terryforsythe
Major Contributor
Great job!!!
The woofer and midrange breakup modes might still end up biting you in the rear end if signal path / amplifier noise levels are not well-controlled. Some passive notches may be advised in that case. (If you have a good idea of your final signal chain, take a listen in a quiet environment, and make sure the setup can still hit your target max levels as well. Keep in mind that noise from all 3 ways is going to add up.) Otherwise it pretty much looks like you're good to go.
- Thread Starter
- #338
Not much of a (accessible) path - Hypex plate amp is the entire chain.
What kind of checks and passive notches do you mean? Can you explain, please.
And what do you mean by max level? The Hypex is at 0dB, volume is controlled at the input. Comfortable background listening is at 1/10 to 1/4 vol. By 1/2 vol it is loud. At 3/4 it is concert level. Full vol is only practical on very high DR material. The amp does not enter power limiter even at full vol, unless signal has sub-20Hz tones. I just cut these out with a 20Hz LR4 high pass.
There is no hiss.
What kind of checks and passive notches do you mean? Can you explain, please.
And what do you mean by max level? The Hypex is at 0dB, volume is controlled at the input. Comfortable background listening is at 1/10 to 1/4 vol. By 1/2 vol it is loud. At 3/4 it is concert level. Full vol is only practical on very high DR material. The amp does not enter power limiter even at full vol, unless signal has sub-20Hz tones. I just cut these out with a 20Hz LR4 high pass.
There is no hiss.
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- Thread Starter
- #339
Learned to export IR from REW to Hypex HFD. With the driver responses in, it is very intuitive to apply filters to smoothen the response and to set the driver delays to best summing. This curve sounded a bit bright, so I added a gentle slope. Then added three narrow notches below 100Hz to kill the worst room resonances. Result - perfect sound.
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