1st orders can be fun.
it is just tough to find drivers that sum.
I was just playing around with 1st orders for fun.
But was really smooth 2" dome midrange.
old school 2 way be at 800 Hz
and classic 3rd order to make the horn work.
unless you go really old school like the
old Jensen Bass Reflex radio speakers.
modern "equivalent" would be guitar speakers.
and the old reflex boxes were tuned miles high in
the fart o sphere. LOL
it is just tough to find drivers that sum.
I was just playing around with 1st orders for fun.
But was really smooth 2" dome midrange.
old school 2 way be at 800 Hz
and classic 3rd order to make the horn work.
unless you go really old school like the
old Jensen Bass Reflex radio speakers.
modern "equivalent" would be guitar speakers.
and the old reflex boxes were tuned miles high in
the fart o sphere. LOL
Humble Homemadehifi chose the 12PR320 as top choice,, so that should tell you something
https://www.humblehomemadehifi.com/Mezzo-Calpamos.html
https://www.humblehomemadehifi.com/Mezzo-Calpamos.html
They also chose a P-Audio horn without baffle and a small Faital Pro 1" driver.
That's not bad material but not the best money can buy.
That's not bad material but not the best money can buy.
"I tried various combinations of about five different compression drivers and ten different horns."
The man is VERY meticulous with his choices, though.
The man is VERY meticulous with his choices, though.
Now the price of the 12PR320 twiced in less than two years, I would look at the 12" from BMS, T. Gravsen chose for the last 3 Way classsic he did. Plus : lower Fs.
I wouldn't go much higher than around 300 Hz with that BMS 12n630 woofer.
Regards
Charles
Regards
Charles
The 12pr320 is indeed more versatile in the op context. However...internal box resonances are still a challenge if you want to go low (see OSMC threads)
I would say that's normal for a proper development ... ;-) esp. if you want to sell your stuff.
I never liked the results I got with "naked" horns, they would have needed to be crossed over higher as you would get in a proper baffle. But I don't know this particular speaker. Off axis measurements would be interesting.
The 1" driver shows a big resonance at 17-8kHz - and these measurements are strongly smoothed. That's not neccessary in 2023 - there are drivers which are flat to 20kHz without big resonances. DE360 for example:
He posted the result in the article:
Looks pretty good, doubt the peak is much of an audible issue, if he went ahead with that driver.
Looks pretty good, doubt the peak is much of an audible issue, if he went ahead with that driver.
I second the 2206 which is very smooth with low distortion up to 1500hz. A sub would be great.
To be honest I care more about no resonances in the audio band as about the speaker wire used for cabeling the speakers ...
Let's face it - it's a 12"/1". Sorry but that's not HighEnd - to much compromises. I like the other design on his page - but I would not recycle the 12" box and build with a complete front baffle.
Have a look here:
http://lsv-achenbach.de/shop/product_info.php?cPath=701_265_698&products_id=5975
http://lsv-achenbach.de/shop/product_info.php?cPath=701_265_636&products_id=5683
http://lsv-achenbach.de/shop/product_info.php?cPath=701_265_649&products_id=5157
http://lsv-achenbach.de/shop/product_info.php?cPath=701_265_637&products_id=6221
THESE have potential to be top of the range.
well, it's strange you say that, because he compared it with the Nova Andromeda (6rs140+tw29bn) and rates it a bit higher
i like the bottom one.
I've often thought on an eq/active crossover double 12" to horn, plus subs but maybe not.
I've often thought on an eq/active crossover double 12" to horn, plus subs but maybe not.