I don't think there are any capacitors in the signal path of the F5 and Full Range speakers. What am I missing? or am I just lost again.........😕
Ron
Ron
If you look at the picture you can see that one wires to the tweeter is connected through a 4.7u cap and the other through the "magical" silmic - if anything, the silmic cuts away some of the highs due to its larger inductance.
Christian,
I was referring to his earlier post, "There must be a capacitor in series tweeter everyway. anyway (if you do not use active preamp at the input of the amplifier)"
Ron
I was referring to his earlier post, "There must be a capacitor in series tweeter everyway. anyway (if you do not use active preamp at the input of the amplifier)"
Ron
Oh I see - that's messed up. 😉
You need a cap for a tweeter if you don't have an active filter taking away the low frequencies. So this is not about a capacitor in the preamp, but whether or not you have a high pass somewhere in your chain before the tweeter.
You need a cap for a tweeter if you don't have an active filter taking away the low frequencies. So this is not about a capacitor in the preamp, but whether or not you have a high pass somewhere in your chain before the tweeter.
Yes i see.Remember what i wrote there.It was just a trying.And for burning in my capacitors for other project
If the tweeter sounds smoother, then you have introduced a pole in the circuit and thus supporting Renron's suggestion about a phase change. The F5 can be very bright, so it is totally plausible that it sounds better with a bit of roll off, but just remember that you are removing sound, not adding sound and that passive filters can be very tricky.
oh well definatelly yes... Just removed wrong phase shift from crossover,it's again "different amp" now,very analytic ,cold...Thanks God not very overbright because of CDP and speakers...
Haha.I did not write that i improved sound or get better sound.Of course i know the disadvantages of electrolytic capacitors on signal path.I connected ero kp capacitor for better high frequency response to eliminate the disadvantages a bit.
I just said that the sound is smoother for me.That is all
I just said that the sound is smoother for me.That is all
Haha.I did not write that i improved sound or get better sound.Of course i know the disadvantages of electrolytic capacitors on signal path.I connected ero kp capacitor for better high frequency response to eliminate the disadvantages a bit.
I just said that the sound is smoother for me.That is all
The following is a cross post from the DIY forum on Audio Karma. I just finished building a pair of F5 monoblocks for a friend. I built my F5 about a year ago and still love it. But the three things I did different have a noticeable affect on the character of the F5.
My build uses cviller boards, Gary's have Daniels boards. Both have Antek 400va torroids.
Crosspost follows:
I just had to do it. Gary's mono pair is different from my F5 in 3 ways:
Speaker cables are from Blue Jeans, MAC Sound Pipes for interconnects. Source is a 160gb ipod full of lossless goodies.
I can't think that spitting into two chassis makes a lot of difference, perhaps some on real dynamic tracks with lots of stereo separation where bass slam on one channel robs from the other in a shared/common power supply. But I can't think that I'm listening at a level that would affect that.
I have been listening to Miles Davis' "Right Off" from A Tribute to Jack Johnson because I'm pretty familiar with it.
First up was my amp. Upstairs I feed it with a passive pre and use RayW built Indignias. Right now I have my Yamaha C-2x and Cornwalls going.
I like the sound of Cornwalls with the F5, certainly has a better low end than the Indignias. The immediacy and intimacy of the F5 is still there. However there are a couple of moments where Miles' horn in the right channel is a tad harsh. Not bad, but in this case noticeable and a bit surprising because I hadn't heard that in the Indignias.
Moving the speaker cables from my F5 to Gary's was a snap. Gary did you know that your binding posts have a locking feature? You have to unscrew them before inserting banana plugs.
Right away the difference in amps is apparent. The low end is just a tad more taught, the overall impression is that things are a bit more pure. A more "natural sound", to coin a phrase.
The bass line at about 13:55 of Right Now has an attack to it, the following organ notes and guitar "wah wah" jumps out at me. The crescendo organ section sounds pretty cool - has kind of a brash brittleness that jumps out and grabs me in a good way. The trumpet comes in and there is none of the harshness that I heard with my F5.
I have the HEXFREDs, I'd better find another set of Toshibas pretty quick.
My build uses cviller boards, Gary's have Daniels boards. Both have Antek 400va torroids.
Crosspost follows:
I just had to do it. Gary's mono pair is different from my F5 in 3 ways:
- Panasonic filter caps instead of Cornell Dubilier
- HEXFRED rectifiers instead of standard Vishay rectifiers
- Toshibia outputs instead of Fairchild.
Speaker cables are from Blue Jeans, MAC Sound Pipes for interconnects. Source is a 160gb ipod full of lossless goodies.
I can't think that spitting into two chassis makes a lot of difference, perhaps some on real dynamic tracks with lots of stereo separation where bass slam on one channel robs from the other in a shared/common power supply. But I can't think that I'm listening at a level that would affect that.
I have been listening to Miles Davis' "Right Off" from A Tribute to Jack Johnson because I'm pretty familiar with it.
First up was my amp. Upstairs I feed it with a passive pre and use RayW built Indignias. Right now I have my Yamaha C-2x and Cornwalls going.
I like the sound of Cornwalls with the F5, certainly has a better low end than the Indignias. The immediacy and intimacy of the F5 is still there. However there are a couple of moments where Miles' horn in the right channel is a tad harsh. Not bad, but in this case noticeable and a bit surprising because I hadn't heard that in the Indignias.
Moving the speaker cables from my F5 to Gary's was a snap. Gary did you know that your binding posts have a locking feature? You have to unscrew them before inserting banana plugs.
Right away the difference in amps is apparent. The low end is just a tad more taught, the overall impression is that things are a bit more pure. A more "natural sound", to coin a phrase.
The bass line at about 13:55 of Right Now has an attack to it, the following organ notes and guitar "wah wah" jumps out at me. The crescendo organ section sounds pretty cool - has kind of a brash brittleness that jumps out and grabs me in a good way. The trumpet comes in and there is none of the harshness that I heard with my F5.
I have the HEXFREDs, I'd better find another set of Toshibas pretty quick.
An externally hosted image should be here but it was not working when we last tested it.
Try the balanced F5 with the Toshiba's. 🙂
(OK. It is only worth doing if your source & pre are both fully balanced.)
Patrick
(OK. It is only worth doing if your source & pre are both fully balanced.)
Patrick
I played the F5 with some stock speakers from NHT (don't know the efficiency) at BAF last year with no preamp. It was not loud, but enjoyable. Now when I use it in my apartment it is plenty for my taste, but if the source is weak, I have to crank it all the way up. If your room is not too big and your source has a decent output, I think you'll find the F5 plays plenty loud.
A DIYaudio vote?
@ specialidiot:
I am still unable to decide which output pair to use in my F5. Did you simply use the stock circuit with the Toshibas or were any mods made to resistor values etc?
My amp is about 60% built, with no outputs soldered in place - let's have a vote!!
I would like to hear from actual builders, but all votes welcome.
For the IRFP240/IRFP9240 vote IRF.
For the Fairchild FQA series vote FQA.
For the Toshiba 2SK1530/2SJ201 vote TOSH.
Which will win? Oh the suspense..........
@ specialidiot:
I am still unable to decide which output pair to use in my F5. Did you simply use the stock circuit with the Toshibas or were any mods made to resistor values etc?
My amp is about 60% built, with no outputs soldered in place - let's have a vote!!
I would like to hear from actual builders, but all votes welcome.
For the IRFP240/IRFP9240 vote IRF.
For the Fairchild FQA series vote FQA.
For the Toshiba 2SK1530/2SJ201 vote TOSH.
Which will win? Oh the suspense..........
"Tosh" is not an acceptable abbreviation for "Toshiba."
I'm leaning toward the Toshibas on my F5's. But then I'm building two stereo amps, so I might also try the FQA in the second amp.
I'm leaning toward the Toshibas on my F5's. But then I'm building two stereo amps, so I might also try the FQA in the second amp.
Just remember as we have discussed earlier - FQA and IRF are drop in replacements in the stock F5, but Toshibas require some fooling around with values. (Don't ask me what needs to be changed because I have not tried yet)
