21-01-2022, 11:59 AM
What difference are you expecting to hear from changing wire?
Members here might not be aware that these speakers have been discussed in a couple of other forums:
https://pinkfishmedia.net/forum/threads/...le.185796/
https://www.diyaudio.com/community/threa...le.288599/
No rule against that, naturally, but multi-forum threads do get confusing when we don't know that the OP is receiving advice from multiple places.
Reading the DIY Audio thread, I see that you received a lot of advice about tweaking the crossover to suit the new drivers. Of course, this advice was remote, so we (nor the people giving it) have no way of knowing what effect it actually had.
But I also read (post #11) that you bought a measurement microphone!
In this and previous threads, I have stressed the importance of measurements. Ears might be the final arbiter, but measurements are absolutely essential. If anyone tells you otherwise, they simply don't realise how little they know about speaker design!
So how about you show us some measurements? Because until you do, everyone - myself included - is simply guessing. But at least I'm trying to help you from the perspective of someone who designs loudspeakers.
Which reminds me - no-on has commented on my explanation of the "reference axis" that I gave in post #30. Presumably because that went against the advice to lower your stands. I wouldn't dream of telling you to raise or lower your stands because I have no way of knowing how high your ears are when you sat down - and nor does anyone else on this forum. Hence my advice to ensure your ears are level with the reference axis, which was probably the tweeter originally, but who knows now that these speakers share literally only an enclosure with the original design. But with your measurement mic, you'll be able to take measurements to discover what the best listening height relative to the tweeter might be. That gives you actual data about the ideal height for your stands, based on science rather than aesthetics.
To the current problem, have you checked the frequency response of your amplifier? It's literally a 5 minute job.
It could have an intermittent fault. Have you exercised all the controls, in case they need cleaning. Likewise, does the fault affect all source equipment, hence narrowing it down to the amp or speakers? For the speakers to suddenly change their tonal balance to that extent, they either have a dry joint that (presumably?) affects both at once. You'd hear if the woofers had a fault like rubbing voicecoils.
If nothing else, have you tried swapping equipment with another system? I don't understand the reluctance to make use of the test gear you have, but in the absence of suitable test gear, we "test by substitution". It's sometimes a little inconvenient, but it might be easier in the first instance before dragging gear to the workshop.
It's really very frustrating. With no measurements, nor any sign that a logical, engineering-based approach is being employed here, I'm afraid we end up with threads containing little more than guessing and speculation - and leave me with the nagging impression that my detailed explanations and attempts to help (here and in previous threads and email conversations) are being ignored. At least tell me if my input isn't useful, or is not pitched at the right level, and I'll either butt out, or try to tailor my advice accordingly...
Members here might not be aware that these speakers have been discussed in a couple of other forums:
https://pinkfishmedia.net/forum/threads/...le.185796/
https://www.diyaudio.com/community/threa...le.288599/
No rule against that, naturally, but multi-forum threads do get confusing when we don't know that the OP is receiving advice from multiple places.
Reading the DIY Audio thread, I see that you received a lot of advice about tweaking the crossover to suit the new drivers. Of course, this advice was remote, so we (nor the people giving it) have no way of knowing what effect it actually had.
But I also read (post #11) that you bought a measurement microphone!
In this and previous threads, I have stressed the importance of measurements. Ears might be the final arbiter, but measurements are absolutely essential. If anyone tells you otherwise, they simply don't realise how little they know about speaker design!
So how about you show us some measurements? Because until you do, everyone - myself included - is simply guessing. But at least I'm trying to help you from the perspective of someone who designs loudspeakers.
Which reminds me - no-on has commented on my explanation of the "reference axis" that I gave in post #30. Presumably because that went against the advice to lower your stands. I wouldn't dream of telling you to raise or lower your stands because I have no way of knowing how high your ears are when you sat down - and nor does anyone else on this forum. Hence my advice to ensure your ears are level with the reference axis, which was probably the tweeter originally, but who knows now that these speakers share literally only an enclosure with the original design. But with your measurement mic, you'll be able to take measurements to discover what the best listening height relative to the tweeter might be. That gives you actual data about the ideal height for your stands, based on science rather than aesthetics.
To the current problem, have you checked the frequency response of your amplifier? It's literally a 5 minute job.
It could have an intermittent fault. Have you exercised all the controls, in case they need cleaning. Likewise, does the fault affect all source equipment, hence narrowing it down to the amp or speakers? For the speakers to suddenly change their tonal balance to that extent, they either have a dry joint that (presumably?) affects both at once. You'd hear if the woofers had a fault like rubbing voicecoils.
If nothing else, have you tried swapping equipment with another system? I don't understand the reluctance to make use of the test gear you have, but in the absence of suitable test gear, we "test by substitution". It's sometimes a little inconvenient, but it might be easier in the first instance before dragging gear to the workshop.
It's really very frustrating. With no measurements, nor any sign that a logical, engineering-based approach is being employed here, I'm afraid we end up with threads containing little more than guessing and speculation - and leave me with the nagging impression that my detailed explanations and attempts to help (here and in previous threads and email conversations) are being ignored. At least tell me if my input isn't useful, or is not pitched at the right level, and I'll either butt out, or try to tailor my advice accordingly...
