Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-02-02 Thread Deaf Cat
Cheers! I'm just starting to try to understand the working of electronics in amps etc. and reading all this bits and bobs all helps to start filling in, the big big picture :-) -- Deaf Cat Deaf Cat's Profile:

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-31 Thread Jaco
Hi Brian, Yes, that is true - I just didn't realize that the equivalent series inductance (ESL) would be so high for the electrolytic that it had an effect below 20kHz. I found this document showing the effect of ESL in a very nice graphical way

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-31 Thread MrSlim
Here's another article on replacing/bypassing Capacitors.. http://www.bext.com/replace.htm -- MrSlim MrSlim's Profile: http://forums.slimdevices.com/member.php?userid=17673 View this thread:

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-30 Thread dpuopolo
Bypassing capacitors makes for better high frequency transmission. Here is an explanation: http://www.tomshardware.com/forum/41067-6-bypassing-electrolytic-caps http://www.audioheritage.org/vbulletin/archive/index.php/t-3555.html The output capacitors in the original Squeezebox are fairly

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-30 Thread Jaco
Yes, I'm also confused. Connecting capacitors in parallel certainly does not amount to bypassing the original capacitor! If you have two capacitors with capacitances C1 and C2, the resulting capacitance after connecting them in parallel will be Ctotal = C1 + C2. So, I'm also wondering how will

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-30 Thread Labarum
Jaco;391080 Wrote: So please provide a picture or a more detailed description of how you bypassed the original capacitors! What you say of capacitors in parallel is only true of perfect (theoretical) capacitors, but those we buy are not so. They have capacitance, resistance and inductance,

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-28 Thread SlimboJimbo
All you do is put them across the capacitors already there. Are you saying that you connected the new caps in parallel with the old ones? If so, how come that the resulting 110.1 is making a noticeable difference in audio quality? Am I missing something here? -- SlimboJimbo

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-28 Thread neskor
FYI http://en.wikipedia.org/wiki/Decoupling_capacitor -- neskor neskor's Profile: http://forums.slimdevices.com/member.php?userid=23401 View this thread: http://forums.slimdevices.com/showthread.php?t=58554

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-28 Thread Deaf Cat
dpuopolo - would you mind, posting a pic? so the ones of us that are interested and not knowing much about electronics and have a soldering iron, may be able to follow a picture while not understanding the electronic words. Many thanks :) DC -- Deaf Cat

Re: [SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-28 Thread DeVerm
neskor;390270 Wrote: FYI http://en.wikipedia.org/wiki/Decoupling_capacitor If the OP means the electrolytic capacitors on the analog outputs, than it has nothing to do with decoupling capacitors. A decoupling capacitor always has one end connected to the return-path of the signal... which

[SlimDevices: Audiophiles] Improving quality of original Squeezebox

2009-01-20 Thread dpuopolo
I recently bought an original Squeezebox on ebay. When I opened it up, I noticed that the output capacitors were large value (110 uf) electrolytics, and were unbypassed. I bypassed these capacitors with .1 uf metal films bought at Radio Shack (If you have not used these caps, they sound quite