Author Topic: Tony's passive pre-amp (Read 623 times)

tony · « **on:** March 07, 2011, 01:05:36 PM »

inspired by this article, http://users.ece.gatech.edu/mleach/papers/stepatten/stepatten.pdf and brought about by a need to have a volume control for use on power amps that do not have such facilities, i decided to make one.

i chose 50k as nominal value of this audio tapered volume control as i felt it can be used on both solid state and tubed gears...

the 22 step selector switch was from Lin li-Chun in Taiwan and the resistors, casing are from Alexan, they are 1% 1/4 watters, the rca jacks are from Golden Mars...

pics:

Philippine Electronics Forum · « **on:** March 07, 2011, 01:05:36 PM »

vhinx · « **Reply #1 on:** March 14, 2011, 01:00:44 PM »

Sir Tony, Kamusta po... ganda po yan pre-amp nyo ah,

OT, pag may time po ako eh pwede po punta sa shop nyo at gusto ko din sana pa check yung Promac DVD ko kasi parang sa main board na po problem nya.

Philippine Electronics Forum · « **Reply #1 on:** March 14, 2011, 01:00:44 PM »

tony · « **Reply #2 on:** March 14, 2011, 03:35:33 PM »

sorry wala akong shop.....hindi ako tumatanggap ng repairs....

Philippine Electronics Forum · « **Reply #2 on:** March 14, 2011, 03:35:33 PM »

Berlin C. Alcayde · « **Reply #3 on:** February 19, 2012, 09:46:14 AM »

sir tony ang gandaling ng gawa mo i mean ang ganda na ang galing mo pa. Sir meron ganyang selector switch dito sa pinas?

Philippine Electronics Forum · « **Reply #3 on:** February 19, 2012, 09:46:14 AM »

tony · « **Reply #4 on:** February 19, 2012, 10:25:36 AM »

sa mga online shops nakakabile....sa deeco nakakita ako ng 12position rotary switch...

Philippine Electronics Forum · « **Reply #4 on:** February 19, 2012, 10:25:36 AM »

Philippine Electronics Forum