Hi Toid,
Trust you are keeping well and staying safe.
I am working on Reference LCR build 115dB+... Taking home theatre out of HiFi and into Pro-Audio realm. The center channel is measuring well. I do believe the crossover can be further refined.
Below is the link to dxo file, would love to get your expert opinion on it:
<a href=" removed link " target="true">Crossover_Design_14-DEC-20v11.dxo
Needless to say I am a big fan of your videos. A big thank you for all your efforts in making the videos and sharing with the community.
Let me know what you think of the crossover.
Regards,
Spiral
Since you are new it won't let you post links. However, I do believe you can post attachments or just PM me the link and I'll edit it and look at it. But as of now, I can't see the link.
Thanks I got it I'll repost and look at it tonight
There are a few concerns. The first is the impedance is really low (around 3ohms and as low as 2.5ohms). What do you have push that? You are going to need a really high end amplifier to push that low of impedance, especially at movie levels. I also noticed there are no offsets. Are these manufacturers graphs or your own measurements? Without proper offsets, this crossover won't work as intended.
Thanks for the valuable feedback Toid! Yes I am powering these speakers with a very beefy external Emotiva amplifier so not really concerned on the drop in impedance. Also considering bi-amping the highs and lows separately same amp.
The subject of offset is tricky as you rightfully put it, I have checked both the manufactures graphs and my own measurements (the file shared with you included the manufacturers measurements).
Although, I wanted to get the crossover in the ballpark, build the enclosure and then take measurements - to fine tune the crossover as needed. This will take slightly longer and add to the cost but its ok.
I just wanted to check with you if the 'ballpark' is decent as a starter. I should have the enclosures and components ready in another week or two, will share the graphs.
If that is the case, you definitely look like you are on the right path. I look forward to seeing it progress.
