Obbligatto sounds more analogue. Its vocal is more warm yet with detail. The vocal is also more forward, smooth and clear. quite good for value.

ccschua got picture of the cap to share? really curious to know.

I didnt take photo. may be abel can help.

check this out.

http://www.humblehomemadehifi.com/Cap.html

this the cap
actually it got marking .... something like V-CAP got direction but anyt side can use just give different sound
u can check the price from
http://www.diyhifisupply.com/?q=catalog/21/capacitors



This post has been edited by abel: Jan 4 2009, 11:38 PM

It is huge. I only use 0.47uF for my soundstage 1.5, and it is huge and heavy.

the outlook looks like Audio Note/Jensen Coupling Cap w/o lettering

ccschua u got put the right direction or not ... the red mark is output ... if i not mistaken



This post has been edited by abel: Jan 4 2009, 11:46 PM

I am waiting for Jantzen cross cap to arrive. Then I can mod again loh. This time I will reduce the capacitance at 7uF to 5.6uF.

Does anyone know if I can test out the freq response of the X O network.

The so called audio cap damn expensive due to its voltage rating, lol, 630VDC, i would say even 50Vdc is more than enough...

why would the voltage be so high? and at weird figures of 630V?

you want>? joking.. I don't have these...

I can't imagine which Amp can generate voltage even higher than the power supplied to the amp itself...

I hope someone give a reason for using those damn high voltage cap, no choice or what?

This post has been edited by coolkwc: Jan 5 2009, 12:50 AM

not at this point of time

Nothing weird. They're made to suit and suitable for signal coupling or bypass capacitors in tube amplifiers where the anode voltage potential may be in 3 figures.

Okay.. that make sense thanx bsl!

e.g. 6SN7 tube coupling cap 0.1 uF is 333V.

It make sense for Tube coupling cap but for X.O...

Somehow I don't fancy paper in oil caps for speaker crossover, as it may veil the sonics, takes time to break in, reduce some sparkle in the highs and slow down the pace. Polypropylene caps are usually a more popular choice, but for the modder, anything can fit in because you're altering the sound to your personal taste, even if it means altering the response curve of the loudspeaker.
By reducing the cap value from 7uf to smaller value, you're actually narrowing the high frequency range to the tweeter. Less mids to the tweeter, and you may find a roll off in the midrange. The smaller the capacitance in series to the tweeter results in blocking more low frequencies whilst allowing high frequencies to pass through. A bypass capacitor to ground encourages high frequencies to bypass to ground, and thats usually at the woofer or LF driver to block any high frequencies outputting to the LF driver. Thats where the high freqencies are "crossover" to the HF driver. In other words the woofer takes care of low frequencies and the highs are passed on to the HF driver. The RC network determines the point it crossover, minimal overlap for flattest frequency response and match the tonal character of the speaker drivers.

This post has been edited by bsl555: Jan 5 2009, 01:21 AM

I havent learned up the network yet. the 7uF cap is normally not there. I increase the cap value and found the vocal flatter. I was thinking lowering that 7uF will bring in more higher treble ? the 6uF works on high pass. is the 7uF works on high pass as well ?

I was refering to your diagram in the 1st page and thinking thats the actual crossover in the Kef. If the 7uf is "normally not there", what's the actual circuit?
The manufacturer selected values are likely best matched to the characteristics of the speaker drivers. You're rolling about the cap values are likely to result in adding something somewhere and deprive something somewhere else.