Hi,
I was given pair of Alesis point 7 monitors. They seem well built, but when mixing in reverb I noticed plenty of the higher frequencies, but a bit empty where the richness is. Is there a change of components in the crossover that I could do that could help? I wouldn't want to change values, but upgrade quality.
Could I ask for advice on which components, if any, could provide a more natural sound?
Thanks
I was given pair of Alesis point 7 monitors. They seem well built, but when mixing in reverb I noticed plenty of the higher frequencies, but a bit empty where the richness is. Is there a change of components in the crossover that I could do that could help? I wouldn't want to change values, but upgrade quality.
Could I ask for advice on which components, if any, could provide a more natural sound?
Thanks
Attachments
Without getting into loudspeaker design analysis, the best you can do is to check npe caps for their specified capacitance value. Should they be way out of spec, replacing with new ones might solve the issue, assuming there is any at all. While doing that, you can draw up the schematic also.
Your best move would be to locate the speakers in your room, and use an equaliser to voice them. Next would be working on the speaker design and treating the room.
It took me a bit, but I believe I've included everything in the drawing. The 4k and 2.2k Capacitors also say MET CH. The other 5 are NPE.
I only have a multitester, and the NPE capacitors are a few UF over the value on the label. 2khz is the Crossover frequency, according to literature. The pcb is dated 1996.
If I swap out the electrolytic capacitors, are there a type that I could choose for not too much money that would affect the high frequency signal.
I would also be thankful if anyone could say what type of crossover this is. Ive seen others on my dads 1980s Mission speakers with only a couple inductors and a capacitor, and they sound wonderful. I was surprised to see so many parts in this one with only 2 bands. Are some components for RF Shielding?
Thanks
I only have a multitester, and the NPE capacitors are a few UF over the value on the label. 2khz is the Crossover frequency, according to literature. The pcb is dated 1996.
If I swap out the electrolytic capacitors, are there a type that I could choose for not too much money that would affect the high frequency signal.
I would also be thankful if anyone could say what type of crossover this is. Ive seen others on my dads 1980s Mission speakers with only a couple inductors and a capacitor, and they sound wonderful. I was surprised to see so many parts in this one with only 2 bands. Are some components for RF Shielding?
Thanks
Attachments
Sorry to disappoint, but your efforts are directed in wrong direction. Capacitor values are OK; NP 'lyts are used when exact value is not critical, and few uF off could be your meter accuracy.
Point 7 is a reasonbaly neutral and accurate monitor with about +-2 dB of FR variation. Their main flaw is a total lack of bass.
Don't take it personally, but they are not going to be improved by a person who assume that some parts in the crossover are for RF shielding.
The problem most likely lies in room acoustics, as AllenB suggested. The most productive - results achieved over efforts invested - would be to measure frequency response both near the monitor, say at 0.5 m at tweeter axis, and at the mixing position. You or your friends probably have an omni mic.
Or just try a more modern, more neutral and less room-dependent monitor. Swissonic series is very good amongst the cheaper ones:
https://www.audiosciencereview.com/forum/index.php?threads/swissonic-a305.31591/
Or more common JBL LSR306, LSR308.
Point 7 is a reasonbaly neutral and accurate monitor with about +-2 dB of FR variation. Their main flaw is a total lack of bass.
Don't take it personally, but they are not going to be improved by a person who assume that some parts in the crossover are for RF shielding.
The problem most likely lies in room acoustics, as AllenB suggested. The most productive - results achieved over efforts invested - would be to measure frequency response both near the monitor, say at 0.5 m at tweeter axis, and at the mixing position. You or your friends probably have an omni mic.
Or just try a more modern, more neutral and less room-dependent monitor. Swissonic series is very good amongst the cheaper ones:
https://www.audiosciencereview.com/forum/index.php?threads/swissonic-a305.31591/
Or more common JBL LSR306, LSR308.
From a glance, 3rd order electrical on both tweeter and woofer with some additional components. In practice, it could be 4th order acoustical, given the natural slopes of the drivers, but it's impossible to say for sure without measuring each driver frequency and impedance responses.
You can try quick and dirty simulation at https://www.micka.de/en/2weg_en.php
It bears repeating that electrical side tells us little about speaker perfomance - both waveguide tweeter with a single capacitor and regular flat-faced tweeter with a bunch of crossover components can have same 2000 Hz LR12 high pass acoustic response.
You can try quick and dirty simulation at https://www.micka.de/en/2weg_en.php
It bears repeating that electrical side tells us little about speaker perfomance - both waveguide tweeter with a single capacitor and regular flat-faced tweeter with a bunch of crossover components can have same 2000 Hz LR12 high pass acoustic response.