avr300 said:
What kind of cap I should look for on websites ? I just see it is... quite square 🙂
Malefoda said:
There Wima caps Farnell has them .1uf should work orthers might be using something different. I knowthat I need to get some and do some bypassing in my 63 😉
Regards
Dave
Hi Jaap..
Haven't got them yet. Farnell is out of stock. I'm running the FC's now.
Planning a minimal preamp, AD8620 and a Vishay pot. The 63 sure deserves it.
Haven't got them yet. Farnell is out of stock. I'm running the FC's now.
Planning a minimal preamp, AD8620 and a Vishay pot. The 63 sure deserves it.
Jesper - add a BUF634 in wide-bandwidth mode to each channel (inside the f/back loop) and you'll have a preamp that will drive anything[/] - and a very nice headphone amp for free 😉
martin clark said:
MC - I'll consider. I'll start off by the 8620 and see how things progress.
UPS - sorry for hijacking the threat.
avr300 said:
Hi AVR,
I had a Vishay (10k, linear) in my preamp, but the channel balance at anything like low volume made it unusable.
Then I tried a cheap carbon log 10k pot, and it was barely better. The sound was no worse.
Now I have put in a 20k Alps Blue and the channel balance is exemplary! Very useable late at night!
Sorry it's off-topic everyone else.
Simon
SimontY said:
Simon
something simple to control your preamp
http://www.siliconchip.com.au/cms/A_105319/article.html
http://www.siliconchip.com.au/cms/A_106376/article.html
allan
ps
sorry also
still off topic
headphone tweak...
Hello guys,
Does the 4556 JRC work for the headphone's sound quality?
And will it deserves an upgrade if the headphone is kept? As I use to plug my headphone there instead of the amp, and maybe won't have any headphone output to next stuff, maybe I can improve this part aslo...
So? Any good advice for there? Maybe Another 8620? (I use the AR for main and one 8620 for there?)
Thanks!
Bravo to Beckham...
Hello guys,
Does the 4556 JRC work for the headphone's sound quality?
And will it deserves an upgrade if the headphone is kept? As I use to plug my headphone there instead of the amp, and maybe won't have any headphone output to next stuff, maybe I can improve this part aslo...
So? Any good advice for there? Maybe Another 8620? (I use the AR for main and one 8620 for there?)
Thanks!
Bravo to Beckham...
Cannot edit ?
whatever, I meant a AD8620BR for headphone (BR is overpriced for audio I've red...).
Why they used a diffrent opamp for the headphone ?
whatever, I meant a AD8620BR for headphone (BR is overpriced for audio I've red...).
Why they used a diffrent opamp for the headphone ?
Malefoda said:
The headphone opamp is cheaper!!! Ive fitted an OPA2134 in the headphone circuit and fitted better caps and my friend was very happy with the sound output.
Just treat it the same as you would for the main opamps
Brent
In my head...
I'm scared : since I've grounded and rubbered the cristal, the sound is worst... at the same time I've removed from my back wall ( back of the back wall but still the same room... ) I've removed my egg boxes...
I pray for this is the result of boxes removal, not the xtal damaged by heat... ( I've done fast and with a low power iron... ).
Several square meters of egg boxes and the bass are a mess !
I'm scared : since I've grounded and rubbered the cristal, the sound is worst... at the same time I've removed from my back wall ( back of the back wall but still the same room... ) I've removed my egg boxes...
I pray for this is the result of boxes removal, not the xtal damaged by heat... ( I've done fast and with a low power iron... ).
Several square meters of egg boxes and the bass are a mess !
OpAmps sounding
To Malefoda
Hi!
Look at this article:
http://tangentsoft.net/audio/opamps.html
There is enough information on OpAmps sounding. But I must say it's question of taste. The best sounding OpAmps are among OPA627/637, AD8610/20', AD825, AD8065/66 etc. If you have enough pieces of Browndog adaptors and some soldering skills you can make your own choice. Most of OpAmps need to be backed - to be in use at least one week to show their real sound. And be carefull with supply voltage - not all OpAmps are designed for 30V!
P.S. All this is of importance if the rest of your stereo is perfect. Otherwise all your efforts will be buried in artefacts due to bad electrolitic capacitors, ceramic capacitors ferrite coils in crossovers etc.
To Malefoda
Hi!
Look at this article:
http://tangentsoft.net/audio/opamps.html
There is enough information on OpAmps sounding. But I must say it's question of taste. The best sounding OpAmps are among OPA627/637, AD8610/20', AD825, AD8065/66 etc. If you have enough pieces of Browndog adaptors and some soldering skills you can make your own choice. Most of OpAmps need to be backed - to be in use at least one week to show their real sound. And be carefull with supply voltage - not all OpAmps are designed for 30V!
P.S. All this is of importance if the rest of your stereo is perfect. Otherwise all your efforts will be buried in artefacts due to bad electrolitic capacitors, ceramic capacitors ferrite coils in crossovers etc.
Re: In my head...
Hmm, well the egg boxes wouldn't directly affect the bass performance much. They would provide diffusion in the top-end and removing them could feasibly cause some confusion in the overall presentation. Why did you remove them?
Give your player a day to settle down, that may be all it needs. Don't move it or the wires. See if the sound sorts itself out.
Simon
Malefoda said:
Hmm, well the egg boxes wouldn't directly affect the bass performance much. They would provide diffusion in the top-end and removing them could feasibly cause some confusion in the overall presentation. Why did you remove them?
Give your player a day to settle down, that may be all it needs. Don't move it or the wires. See if the sound sorts itself out.
Simon
Re: Re: In my head...
Malefoda,
Can you take a picture of your crystal?
The crystal leads should be free of the hot glue.
Bass response might be effected by the stifness of the enclosure (backplane screwed down, how many screws inserted etc).
Jaap
Malefoda said:
SimontY said:
Malefoda,
Can you take a picture of your crystal?
The crystal leads should be free of the hot glue.
Bass response might be effected by the stifness of the enclosure (backplane screwed down, how many screws inserted etc).
Jaap
disco said:
LOL Why not!!
Always looking for new avenues at work and modding is something I enjoy. On the back of it someone is sending me a Roksan Caspian cd to repair and mod 😉
Brent