Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th April 2010, 06:44 AM   #1
ervinl is offline ervinl  Indonesia
diyAudio Member
 
Join Date: Mar 2010
Default DIY AM/FM tuner tweak, is that possible?

Hi,

I am just curious is it possible to DIY AM/FM tuner and do some tweaking to get audiophile sound (means good sound and sensitivity), like in pre/power amplifier, e.g. change capacitor, resistor etc.

I do not think it is possible with active components, as usually it uses some chips for digital and analog one. Or is there still possibility (is there upgradeable ICs)?

Thanks,

Ervin L
  Reply With Quote
Old 26th April 2010, 07:42 AM   #2
Mooly is online now Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Depends on the equipment... does it use opamps in the output... old stuff may use 4558's etc. If it's years old may be worth replacing electroylitics, but ultimately the medium itself is a limiting factor.

You won't improve sensitivity, and I would stay clear of trying to alter anything in the RF/IF stages with the exception of electroylitics. Any parts in those stages that are bent over, misaligned physically etc... leave as they are as it will all have been aligned with them like that.
__________________
-------------------------------------------------------
A simulation free zone. Design it, build it, test it.
  Reply With Quote
Old 27th April 2010, 07:29 AM   #3
ervinl is offline ervinl  Indonesia
diyAudio Member
 
Join Date: Mar 2010
I mean to tweak/upgrade new, FM/AM tuner kit found in the market. usually it just uses 1 IC or 2 from RF in up to stereo decoder. Only passive R and C outside the chip.

In audio, it is common to upgrade R and C to get better sound, but what about in RF?

I do not find yet information about this tweaking.
  Reply With Quote
Old 27th April 2010, 07:37 AM   #4
Mooly is online now Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Quote:
Originally Posted by ervinl View Post
I mean to tweak/upgrade new, FM/AM tuner kit found in the market. usually it just uses 1 IC or 2 from RF in up to stereo decoder. Only passive R and C outside the chip.

In audio, it is common to upgrade R and C to get better sound, but what about in RF?

I do not find yet information about this tweaking.
Hi ervinl,
You might be better starting a new thread to ask that, as this one is about a specific problem on a Sony.

For what it's worth, I don't think it's advisable to go changing R's and C's in the RF stages of anything... you just run the risk of making things worse. The alignment will all have been done with exactly the parts that are fitted and taking into account the characteristics of those parts.
The only possible exception to that is any electroylitics that are years old and that may have dried out such as supply decoupling etc.
__________________
-------------------------------------------------------
A simulation free zone. Design it, build it, test it.
  Reply With Quote
Old 27th April 2010, 12:29 PM   #5
bocka is offline bocka  Germany
diyAudio Member
 
Join Date: Jul 2003
Location: Hannover
Quote:
Originally Posted by ervinl View Post
I mean to tweak/upgrade new, FM/AM tuner kit found in the market. usually it just uses 1 IC or 2 from RF in up to stereo decoder. Only passive R and C outside the chip.

In audio, it is common to upgrade R and C to get better sound, but what about in RF?
In RF it's commonly known that you should avoid swapping components although they have the same values. If you don't have the measurement equipment you'll probably make things worse. You don't find any information about it as it's not diy.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY FM Tuner Soxen Analogue Source 3 13th September 2008 04:34 PM
DIY FM tuner kits? luvdunhill Analogue Source 0 21st October 2007 08:35 PM
DIY FM Tuner challenge cadmaniac Everything Else 28 16th January 2004 07:34 AM
DIY your FM Tuner 3moons Analogue Source 0 23rd November 2003 11:09 AM
DIY FM Tuner? groundloop Everything Else 10 2nd July 2002 08:22 PM


New To Site? Need Help?

All times are GMT. The time now is 06:33 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2