2024-05-03T15:34:38Z https://www.cigarboxnation.com/video/video/listTagged?tag=diodes&rss=yes&xn_auth=no tag:www.cigarboxnation.com,2012-01-14:2592684:Video:945997 2012-01-14T21:51:28.842Z Mike Bingham https://www.cigarboxnation.com/profile/MikeBingham

<a href="https://www.cigarboxnation.com/video/first-act-ma104-amp-with-led-distortion-mod"><br /> <img alt="Thumbnail" height="159" src="https://storage.ning.com/topology/rest/1.0/file/get/329899218?profile=original&amp;width=240&amp;height=159" width="240"></img><br /> </a> <br></br>Here's the second round of mods to my thrift store MA104 amp. The previous mods were to add an external speaker jack and make a pigtail to run it off a 9v battery. In this mod I added a DPDT switch and two red LEDs for clipping diodes. The switch lets me choose between the original clipping diodes and the red LEDs. The red LEDs give a much louder sound and better…

<a href="https://www.cigarboxnation.com/video/first-act-ma104-amp-with-led-distortion-mod"><br /> <img src="https://storage.ning.com/topology/rest/1.0/file/get/329899218?profile=original&amp;width=240&amp;height=159" width="240" height="159" alt="Thumbnail" /><br /> </a><br />Here's the second round of mods to my thrift store MA104 amp. The previous mods were to add an external speaker jack and make a pigtail to run it off a 9v battery. In this mod I added a DPDT switch and two red LEDs for clipping diodes. The switch lets me choose between the original clipping diodes and the red LEDs. The red LEDs give a much louder sound and better distortion with a lot less sizzle than the originals. In the video I play first with original distortion and regular speaker. Next is the LED distortion with regular speaker. Third is original distortion into external speaker (jumpered into the Peavey speaker). And last is the LED distortion. I took the 4558 IC out, soldered in a socket and replaced the 4558 with a TL082 IC. The amps seems quieter and more responsive with the TL082, but that could be imagination. With the LEDs switched in and the gain turned down, the volume is better and cleaner on the clean sound. It was another worthwhile round of mods on the little amp. Now I'm eyeballing my Crate GX-15...