TDA2003
TDA2003
Which audio rx tx mod fits the cobra 29 NW LTD with the tda2003 audio ic? Thanks
- Goldfinger
- Site Maintenance
- Posts: 3860
- Joined: Sat Jun 30, 2007 12:27 am
- Location: Beaver State
Re: TDA2003
Both the older one and the TDA one are on the same thread: "Cobra 29 cap changes"
wwpdx
wwpdx.com
wwpdx.com
Re: TDA2003
I can not find C170 on my board and Q23 is not placed the same direction as the photo.
- Goldfinger
- Site Maintenance
- Posts: 3860
- Joined: Sat Jun 30, 2007 12:27 am
- Location: Beaver State
Re: TDA2003
On the radio's that have C170, the value is pretty high and cuts out a lot of highs. They keep changing the new 29's so yours may not have C170 or it's somewhere else completely. I'd just go ahead and do the rest of the mods and see how it sounds.
wwpdx
wwpdx.com
wwpdx.com
Re: TDA2003
This is mine it has a SMD cap on the solder side of board from the factory
- Goldfinger
- Site Maintenance
- Posts: 3860
- Joined: Sat Jun 30, 2007 12:27 am
- Location: Beaver State
Re: TDA2003
That cap is part of the feedback circuit. Did removing it give it more highs?
wwpdx
wwpdx.com
wwpdx.com
Re: TDA2003
I haven't tired any changes yet, is the other 29 mod you stated still the one to use with this version?
- Goldfinger
- Site Maintenance
- Posts: 3860
- Joined: Sat Jun 30, 2007 12:27 am
- Location: Beaver State
Re: TDA2003
If your radio is the same as the schematic you posted then the cap changes would be the same as "New 2010/2011 Cobra 29LTD (TDA2003 audio chip)" but you ignore C125 and C43 as your 29 doesn't have them according to the schematic. The early TDA2003 boards must be different from the newer ones.
wwpdx
wwpdx.com
wwpdx.com
Re: TDA2003
Will let you know. Thanks again