4343 fully active?

[Mctwins]

I have the passive filter on the mid/high section, it looks like this now:


Source - preamp -> Driverack HIGH -> HH V800 -> JBL 3143 passive network -> Mid/high section
............................Driverack LOW.->.Crown K2 -> 2235H woofers

I think that the amp is just noisy due to it's construction but it could be something with gain, on when you turn the volume knobs on the V800 to 50%-60% it's not noticeable.
The Krell needs more input gain and maybe that's the reason it's so quiet.

Hallo!

Now we are talking, so you don't use any passive network for your 2235H transducer. You schould read this.

https://www.google.se/url?sa=t&rct=j...71954034,d.bGQ

and this, important, specially the section "Do Not Expect 20 Hz From a 40 Hz Box"

https://www.google.se/url?sa=t&rct=j...71954034,d.bGQ

I still believe that you are over power that transducer. At least, you schould Highpass at 30Hz BW 18.

[martin2395]

Why should I let it rolloff?

Honestly I never play loud enough to see the cone moving on the 2235H and on my listening spot it has enough bass to feel that the couch is ready for takeoff
I bet that woofer has never seen 50-75 watts or more as my listetning level is around 70-85 dB.

[Mctwins]

Why should I let it rolloff?

Honestly I never play loud enough to see the cone moving on the 2235H and on my listening spot it has enough bass to feel that the couch is ready for takeoff
I bet that woofer has never seen 50-75 watts or more as my listetning level is around 70-85 dB.

Hallo!

Don't understand your question Have you read the link I provided?

Don't worry, my JBL 4429 makes my sofa ready to take off with only 10Watts.

[martin2395]

Interesting stuff, I've been listening to the DBX with HH V800 amp for a 3 weeks and found it to sound "ok" as the V800 was just a temporary solution until I get my Krell back from servicing.

Well, I picked up the Krell yesterday with replaced fan, re-soldered boards and all the smaller caps replaced and I played it through the DBX and through the BSS. To be honest - the old but fully recapped FDS360 blew away the DBX, no contest. The DBX doesn't do anything wrong but compared to the BSS it's just dull and lifeless.

I noticed that the small hole between the mid and bass was back with the BSS, no I know that it has to do with the x-over slope so if I reset the BSS to 12dB/oct I'm good.

[martin2395]

Interesting stuff, I've been listening to the DBX with HH V800 amp for a 3 weeks and found it to sound "ok" as the V800 was just a temporary solution until I get my Krell back from servicing.

Well, I picked up the Krell yesterday with replaced fan, re-soldered boards and all the smaller caps replaced (With Nichicon Muse KZ!) and I played it through the DBX and later through the BSS.
To be honest - the old but fully recapped FDS360 blew away the DBX, no contest. The DBX doesn't do anything wrong but compared to the BSS it's just dull and lifeless.

I noticed that the small hole between the mid and bass was back when I connected the BSS, now I know that it because the x-over slope so if I reset the BSS to 12dB/oct (now 24db oct) I'm good.

[allen mueller]

To be honest - the old but fully recapped FDS360 blew away the DBX, no contest. The DBX doesn't do anything wrong but compared to the BSS it's just dull and lifeless.

I agree with you having use the original PA, and the 260 there is something that the DBX is missing when compared to bssfds360. The 360 is a great crossover. I also have tried the BSS digital x-overs in my systems over the years having used the 336T minidrive and the 366T omnidrive. With their digital units I found initially I was very impressed but over long listening sessions I found them a little fatiguing.

For the last several years I've been using an Xilica XP3060 which I love. I find it to be very transparent without adding any unwanted changes to the signal. If you can try one out I would recommend it.

Allen

[martin2395]

Hi Allen,

It's a bit hard for me to desribe what the DBX actually did with the sound but I could call the midrange a bit hollow, laid back and it dissapeared in the background a bit.
My guess is that the engineers at DBX did their best to mask the digital glare of this processor and they gave it a somehow muffled sound instead and I returned it today.


What's your opinion on the BSS FDS360 vs the Xilica? I've been looking at the XP3060 too because I love the flexibility of a digital unit.
Price-wise there isn't much difference between a brand new PA2 and a used XP3060.

[allen mueller]

I prefer the xilica over the fds360. Sound wise they are both very close but I think I might give a slight edge to the Xilica. To be fair I haven't recapped my 360 or done any service to it. The big thing for me is once I add in the ability to do parametric eq, delay and other things in the digital unit and still maintain the same sound quality the xilica beats out my combination of the fds360 and my white eq's that I use for my all analog chain.

The only thing I would say against the xilica is that its alittle hard to use the front panel controls to make adjustments but I would say that is true for most of the digital units I have tried. I use USB port on the front and my computer to make adjustments with their software which is easy to use and allot easier. It also has a network connection on the back as well but i haven't tried it.

Allen

[martin2395]

I got a chance to buy a slightly used Xilica xp4080 but I'm still unsure if it is able to replicate the stock crossover

[martin2395]

I need some advice regarding the slopes of the 2-way crossover, with 24dB/octave I noticed that the transition between then 2235H and 2123H wasn't optimal, there was a hole in the frequency.
12dboct. was in this case much better but what will be the best freq. and slope with 2235H->2123H?

[hjames]

I need some advice regarding the slopes of the 2-way crossover, with 24dB/octave I noticed that the transition between then 2235H and 2123H wasn't optimal, there was a hole in the frequency.
12dboct. was in this case much better but what will be the best freq. and slope with 2235H->2123H?

What crossover freq - should be 290Hz ... (thats what's used on 4341/4343/4345) between the woofer and the 2121/2122 -
I'm guessing the 2123 would be the same as long as you padded it down (3db or so) to compensate for the higher efficiency.

Also, is the 2235 connected in reverse polarity?

[martin2395]

I set the lpad to -2 on the 2123H but the correct transistion between the woofer and the midwoofer is (at least in my case it is) more audible.

I asked about the freq. since the original 4343 used 300Hz/12dB but with the 4344Mk1 and 4345 JBL switched to 290Hz/18dB. The MkII version crossed at 340Hz with unknown slope. Finally I wasn't able to find anything about the type of filtering they used, was it Butterworth or Linkwitz-Riley?

If the 3143 flips the polarity of the 223x internally while switched to bi-amp then yes - it's connected out of phase with other units. I mostly run the speaker wires directly from the K2 to the 2235H and when I do it's connected black-red and red-black.

[ivica]

I set the lpad to -2 on the 2123H but the correct transistion between the woofer and the midwoofer is (at least in my case it is) more audible.

I asked about the freq. since the original 4343 used 300Hz/12dB but with the 4344Mk1 and 4345 JBL switched to 290Hz/18dB. The MkII version crossed at 340Hz with unknown slope. Finally I wasn't able to find anything about the type of filtering they used, was it Butterworth or Linkwitz-Riley?

If the 3143 flips the polarity of the 223x internally while switched to bi-amp then yes - it's connected out of phase with other units. I mostly run the speaker wires directly from the K2 to the 2235H and when I do it's connected black-red and red-black.

Hi
may be I am wrong but 2123 is not so good for too low mid section as 2121 or 2122, so may cross over between 2123 2235 can be put higher, say something 450~500 Hz. for either driver I think would be OK.

regards
ivica

[macaroonie]

I got a chance to buy a slightly used Xilica xp4080 but I'm still unsure if it is able to replicate the stock crossover

Why don't you download the software and try it out ?

All these higher end DSP units will do just about anything you want and more. Replicating a specific passive network is clearly difficult if you don't know the parameters of that particular network.

Also this is worth reading : post 33

http://www.audioheritage.org/vbullet...rew-4343/page3

M

[martin2395]

I had a lot of trouble changing my bss to 12dB for the last couple of weeks and yesterday I heard that 24dB would work fine too if I flipped the polarity, is it true?
I wanted to change because 24dB seemed to give a dip in freq between the woofer and mid.