If you plan to use a TDA2050 instead, it calls for a +/- 25V supply, so you will need a 17.5-0-17.5 VAC (50VA) transformer (18-0-18 is still OK). If you move to a TDA2040, you need +/- 20 V, so a 14-0-14 VAC (40VA) transformer will be OK. The original output IC (TDA2030) calls for a +/- 18V supply, and therefore a 13-0-13 VAC (25/30VA) transformer is adequate. I used an Italian-made transformer, so I don't think its P/N could be of any use. PS did this do anything to the sound, or just amplify it?Hi Ryan, PS did this do anything to the sound, or just amplify it? It's sad for a 28 year old to have to call dad when a circuit keeps faulting lol.I also was wondering did the OP amps help smooth the "breakup" out, or just reduce some minor noise? thanks
VOX PATHFINDER 10 LED MOD MOD
I'm kinda/ somewhat new to the Mod thing my dad has an electro/mechanical degree and helps alot if i get in trouble. I 'm gonna use the 2050 but was unsure about the appropriate Pt i know you suggest 50W any advice appreciated. I substituted the output chip - seems to me it was a TDA 2030 - with a TDA2040 and changed the original 8" speaker, putting in a 10" Celestion I salvaged from a wrecked Cambridge 30.ĭo you have a part # for the PT. I also added voltage regulators for the preamp section ( to avoid early clipping on the op-amps due to voltage drops when the amp is driven hard ). I replaced the original PT with a toroidal PT, with a slightly higher voltage and a better current rating, then I changed the rectifier to a 4 Amp bridge, this allowed me to increase the filter capacitors' value ( to improve the dynamic range ).
VOX PATHFINDER 10 LED MOD MODS
I replaced the original op-amps with 5532s ( and it did help in lowering the noise, are you sure your 5532s are not crappy chinese fakes? ) and added DIP sockets for a quick replacement, but as a matter of fact I did the major mods on the PS and PA sections. I own a Pathfinder 15R, and I agree it's great value for the money, still, I couldn't keep myself from performing some mods.
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