Cool, i like proac’s so please tell everything about yours
To me it looks like you can reduce the serie resistor to the tweeter, the ’s’ is that for soft dome tweeter?
To me it looks like you can reduce the serie resistor to the tweeter, the ’s’ is that for soft dome tweeter?
First 2db is going to be barely audible, if at all.
Second, depending on how you got your measurements, that variation could also be from mic positioning, the room, where you were standing, when you took the readings and a dozen other causes.
If you sit in your sweet spot, do they sound okay?
If they do, relax and enjoy the music.
Thanks. I took measurements in the center of the room at a distance of 1 meter and 5 cm from twitter. The results are the same, the difference is 2dB.
From the listener's place or by alternately listening to each column, I hear the difference. Twitter feed.
From the listener's place or by alternately listening to each column, I hear the difference. Twitter feed.
Hello, we continue without the best results in the middle zone, there is some distortion with wind sounds, etc.
Could it be the 18uf capacitor that lets the frequency of the medium drop too low?
Could it be the 18uf capacitor that lets the frequency of the medium drop too low?
The 18uF is working in sympathy with the other crossover components and can't be changed independently of them.
Original Proac crossover for 15 ohm unit:
References:
ATC 75-150 STD
https://www.diyaudio.com/forums/multi-way/210627-wilmslow-audio-prestige-platinum-72.html#post4326410
ATC-SM75-150
Box for Jeff Bagby pdf.
Jeff Bagby seemed to think you need to take care of the mids enormous Fs, with a parallel resistor. There is also some unpleasant looking breakup on the waterfall around 4.5kHz, so the resistor might help there too. The Volt 752 is remarkably similar to the 9 ohm ATC unit.
Wilmslow Audio did something similar:
It's a long time ago, but I was unconvinced you need to do much to the crossover at all when changing drivers to the 9 ohm version. But best to sim it. It might just be that the Monitor balance is a bit too flat for domestic use.
References:
ATC 75-150 STD
https://www.diyaudio.com/forums/multi-way/210627-wilmslow-audio-prestige-platinum-72.html#post4326410
ATC-SM75-150
Box for Jeff Bagby pdf.
Jeff Bagby seemed to think you need to take care of the mids enormous Fs, with a parallel resistor. There is also some unpleasant looking breakup on the waterfall around 4.5kHz, so the resistor might help there too. The Volt 752 is remarkably similar to the 9 ohm ATC unit.
Wilmslow Audio did something similar:
It's a long time ago, but I was unconvinced you need to do much to the crossover at all when changing drivers to the 9 ohm version. But best to sim it. It might just be that the Monitor balance is a bit too flat for domestic use.
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Atc sm75-150 8ohm
Hello, you mean to put the ATC SM75-150 8OHM in the original circuit without changing any component or using the circuit you have put
Hello, you mean to put the ATC SM75-150 8OHM in the original circuit without changing any component or using the circuit you have put
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How many Pasetas/ Euros are we talkng about here, El Jefe? 😀
As an Hombre Sincero I must tell you it better be better than chuck-change.
Hello
this is my version of the upgrade I made for a dear friend!!!
capacitors clarity ESA cap 250V and Wicon (for me the best electrolitic capacitors ever made)
Coil by jantzen and mundorf resistors
(25uf= 22uf+2,7uf / 9uf= 6,8uf + 2,2uf)
after assembly I checked the frequency response with the clio system
the correct tweeter polarity is that in the diagram
the sound has improved a lot (in my opinion) both on the details and on the articulation
this is my version of the upgrade I made for a dear friend!!!
capacitors clarity ESA cap 250V and Wicon (for me the best electrolitic capacitors ever made)
Coil by jantzen and mundorf resistors
(25uf= 22uf+2,7uf / 9uf= 6,8uf + 2,2uf)
after assembly I checked the frequency response with the clio system
the correct tweeter polarity is that in the diagram
the sound has improved a lot (in my opinion) both on the details and on the articulation
Attachments
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Still wondering about the polarity of the drivers , some schematics show midrange reversed, others not.
Hi everybody. i'm Newbie. Could you please help me the details schematic of Response 1s crossover ?
I have bought a pair of used response 1s but i suspect the previous user had changed the component value. I want to restore the original value of component to see what different.
Thankyou all
I have bought a pair of used response 1s but i suspect the previous user had changed the component value. I want to restore the original value of component to see what different.
Thankyou all
i've changed Caps from solen MKP to Auricap & new resistors from Dale. The Hi Z-Filter C (30uf) is original AL type for crossovers, not a huge black one like here. The Wire for the Ferrite core is 0.18mm diameter
Hi Nostroma,
What about this Wicon caps can't find them anyware.. what about some help with some help upgrading the crossover on ProAc 1sc can you help with that ?