Speakerdoctor,
Does Google work on your machine?
Try a search on Acoustic Reality and the first item in my search was:
www.arhifi.dk/
which is the current web site for Acoustic Reality. Some of the series crossover info is still there under 'Free 4 all' .
Jim
Does Google work on your machine?
Try a search on Acoustic Reality and the first item in my search was:
www.arhifi.dk/
which is the current web site for Acoustic Reality. Some of the series crossover info is still there under 'Free 4 all' .
Jim
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well, the mentioned Seas W15CY is not particularly "inferior" (truth to be said, it shows some of the lowest distortion figures you can find in this kind of driver).
about the Fountek driver, so far it was a very neat surprise!
Thanks Jim for the NEW URL. Did you try the link at post #3? That worked at one time. It's the one I've been clicking on recently. It looks like they changed their URL address. Don't understand why they didn't put a forwarding address at their old site address like most folks do. 😕
ok, im ready to try this out.
i will use SB Acoustic SB17RNX and SB29RDC in 2 way bookshelf, i will use the standard no-cap AR XO for the first try, let see how it goes.
im hoping others with experience can give some advice on this, as im completely newbie on passive xo 😀
cheers
henry
i will use SB Acoustic SB17RNX and SB29RDC in 2 way bookshelf, i will use the standard no-cap AR XO for the first try, let see how it goes.
im hoping others with experience can give some advice on this, as im completely newbie on passive xo 😀
cheers
henry
Do you have any acoustic measurement equipment? If so, I strongly suggest you install the drivers in your cabinet and run their connecting wires out of the cabinet so you can bread board the series crossover outside of the box until you are satisfied you have found the right combination of values. As has been shown, the series XO is relatively simple in its construction, but finding just the ring values for the components is where trial and error will be needed and all of the fun of the hobby really lies. Start with the nominal values and have some extras on had that go above and below those values. Take lots of on and off axis measurement and listen a lot until you are satisfied you have found the best combination and only then install the xover into the box.
i do have ecm8000 calibrated by crossspec, but currently dont have the audio interface to do measurements.
the problem with the inductors, it will be quite messy to unroll and roll it back. i dont think i can make the spool as good as before.
henry
the problem with the inductors, it will be quite messy to unroll and roll it back. i dont think i can make the spool as good as before.
henry
I have the same mic. It does need phantom power supply. It's always best to corroborate your listening with measurements.
Suggest you buy a few coils rather than go the winding/unwinding route.
Suggest you buy a few coils rather than go the winding/unwinding route.
sb17 & sb29 w/ series xo
well i just finished the sb acoustic 2 way w/ series xo. playing for 20mins now, i must say these are very very good drivers. i hear no harshness from the suspected large cone breakup.
i m using L1 0.15mh 14awg, series R 3.3 and 4.7 MOX 10w, and L2 1.0mh 14awg.
its tad on a bright side, tried placed it nearer to the wall, bass improve abit, doesnt effect midrange much. i either need to attenuate the tweeter or put bigger R1.
cheers
henry
well i just finished the sb acoustic 2 way w/ series xo. playing for 20mins now, i must say these are very very good drivers. i hear no harshness from the suspected large cone breakup.
i m using L1 0.15mh 14awg, series R 3.3 and 4.7 MOX 10w, and L2 1.0mh 14awg.
its tad on a bright side, tried placed it nearer to the wall, bass improve abit, doesnt effect midrange much. i either need to attenuate the tweeter or put bigger R1.
cheers
henry
Attachments
unfortunately not yet.
im listening to some pop and easy tunes, they are well behave. very solid soundstage also.
bass attack abit lacking, but overall its nice.
cheers
henry
im listening to some pop and easy tunes, they are well behave. very solid soundstage also.
bass attack abit lacking, but overall its nice.
cheers
henry
I'm trying right now this AR XO, after looking the web for some info and doing some simulations on Lspcad, I have it playing in my XT25BG60 + SS8545 monitors. Sounds great so far, two coils (0.1 & 1.3) and one resistor (8.2ohm). I was thinking about trying the SS 9500 tweeter instead but I'm not sure it will be worth.
Here's the measurements in my less than anechoic small room:
Here's the measurements in my less than anechoic small room:
Attachments
that is great measurement.
recently i felt the bass is overdamp, not sure what happen, prob the woofer breaking in. its about 75hrs playing now.
recently i felt the bass is overdamp, not sure what happen, prob the woofer breaking in. its about 75hrs playing now.
That dip is caused by a phase problem at those frequencies but I guess with 2 coils and one resistor there's not much we can play with to avoid it, anyway it goes away once I measure them on their usual listening position.
I have since then went back and forward with parallel / series filters but I keep coming back because of the sound. I have somehow corrected that dip by using the same notches I had for the // xo, one for the 800Hz bump and another for the 2800Hz.
bump.
I am holding the flag for the series crossover fans. What happened to Rabittz and Andy G ?
I am holding the flag for the series crossover fans. What happened to Rabittz and Andy G ?
Andy is busy with school and doesn't really have space to build at the moment. He drops in at PETT from time to time.
Rabbitz from what I hear is no longer active in speaker building, but he does still post now and then.
I like series xovers now and then myself, as they are just a different way of doing things. It's another challenge.
Later,
Wolf
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