Search results

Hey thanks for the reply! Yeah it was 350-0-350 on the high voltage secondaries pre rectification and then 460 was after the dropper. It’s a Jet City 50. I found an Edcor PT that’s 360-0-360 which is what the proper spec is for that jet city 50 but I’d have to do a work around to power the...

Just wanted to get an idea what people shoot for as an initial B+ voltage post rectification. Or even what you prefer on the high voltage winding at the transformer. Specifically in a modern high gain application. Even a range would be informative. This can be a new amp build or for modding...

I know this whole thing is pretty old but if possible I was wondering if you might have an idea why the electrolytic input cap would have been bypassed? They have them on the inputs and fx return jacks of all the jet city amps including mine and I was just curious if there’s a tonal benefit to...

I’ll definitely be experimenting with the cold clipper values and locations, worse comes to worse I’ll just change it if it doesn’t work.

Awesome reply, thanks! Definitely going to mess with it but I’m going in with a game plan before I start it.

Hey thanks for the input! Yeah I wasn’t leaving everything else as is, I was going to reconfigure the other stages accordingly. I guess I’m just using what’s there and making totally different from an slo so not really an slo 5 stage. Yeah I agree the Jet city boards are super easy to pull. This...

Hey thanks for your suggestion! This amp isn’t a real SLO but a Jet City modded to SLO spec and I’m trying to get something more unique out of it. I’m still in the process of trying out ideas to discover new tones as I continue learning amp modding. Honestly you’re not the first person to tell...

Just curious if anyone has ever used the 2nd (Crunch/Clean) half of V1 on an SLO circuit to do a 5 gain stage mod? Obviously would need to change Biasing and Filtering and so on for all the stages but I’m pretty determined to make this happen. I’m thinking of keeping the stock CF/Tone stack...

Thanks I did eventually figure that out. I have so many components and spec sheets saved in a folder on my pc that I somehow clicked on the wrong one and read zener. The circuit I got that for was a design from someone that does amp mods and it did work for clipping however I’m still trying...

My master is post tone stack. I just realized these are run in parallel not end to end like a true Jose clipper so I’m going to be ordering some more parts. I may do

And yes I will definitely check them with jumpers.

Thanks for the replies, I will have to go over my work one more time but if I can’t figure it out I should be able to change it to relays pretty easily. Appreciate the help!

I have a Jet City 100HDM that uses an Optocoupler switching circuit to switch channels. The circuit is very similar to the SLO circuit which uses two optocouplers to switch the gain controls and two for the channel volumes. There was a known channel bleed issue which I obtained the parts and...

Just to add the mpsa06 circuit has a parallel resistor the 1n914 doesn’t. Not sure if that matters.

The ones I run from the cathode follower are actually 1n914 and I’ve just discovered they are zener but not sure on the voltage, the ones i tried from the master volume are 1n4747a and are 20v zener diodes so I was mistaken. I’m new to some of this so I need to do more research and read my data...

Thanks for giving me some ideas and options to think about. Still I’m the process of trying some different components, values, and locations. So far I have not tried the 20v zener type yet. I do have a switch to change from silicon diodes to mpsa06. To my ears the silicon diodes kill a lot of...

What are some of your favorite diodes and or tansistors and combinations for clipping circuits and why? How are you combining them and where in the amp circuit are you placing the clipper? Just trying to get a feel for the range of combinations everyone uses and the thought process behind it. I...

Well then I’m in good company since we are of the same camp! Appreciate your knowledge my friend! I am learning a lot on my journey however the two years that have transpired feel more like months since I often get lost in what I’m doing. I have so many questions running through my head all at...

Thanks for the reply! I kind of figured the part about cost and availability but wasn’t sure, I had read in another post that someone used multiple caps in a depth circuit because it made an audible difference.

Hope I’m appropriately posting this question apologize if I’m out of place. I’m about two years into my journey of learning amp modding and my question is what would be the advantage if any of running two capacitors in parallel as opposed to one single capacitor in a circuit? Looking at some...