[pabbi1]

Quote:

Originally Posted by runeight /img/forum/go_quote.gif Those of you who have working amps, have you been listening to them? How are they holding up over time?

Ok, the SS is going SE (now residing in Cali), and no idea what is causing a hum in one system (no idea on the chain), but not in two others. Maybe Sergery can update? it is the 2nd generation proto with Triads.

2nd generation Hybrid is a daily player, and, well, it continues to be a fun. It really does nail guitars (my focal obsession) and all manner of microdetail - with prodigious bass. I did notice a 'smoothing' of the amp at about the two week level (~60-70 hours), but who knows if it is the tubes, sand, or just everything playing well together.

3rd generation Hybrid missing 3 resistors that I'll pick up at lunch, though I'm waiting on a few chasis parts to fire it all up. Will power psu tonight or tomorrow to see if everything holds (yes. my load resistors are on the desk) - might even post a pic just to have Runeight's personal physician prescribe some digitalis... then I can compare the 2nd and 3rd generation Hybrids except for a couple of other differences (tubes, tranny, jacks, attenuators, etc) - never ceteris paribus, eh?

 

[marcus1]

Hi

I've been an avid follower of this thread and hopefully will be building a hybrid soon but I'm a bit confused when you write about the 2nd and 3rd generation hybrids. What are the differences between the two - are you using different components or design?


Quote:

Originally Posted by pabbi1 /img/forum/go_quote.gif Ok, the SS is going SE (now residing in Cali), and no idea what is causing a hum in one system (no idea on the chain), but not in two others. Maybe Sergery can update? it is the 2nd generation proto with Triads. 2nd generation Hybrid is a daily player, and, well, it continues to be a fun. It really does nail guitars (my focal obsession) and all manner of microdetail - with prodigious bass. I did notice a 'smoothing' of the amp at about the two week level (~60-70 hours), but who knows if it is the tubes, sand, or just everything playing well together. 3rd generation Hybrid missing 3 resistors that I'll pick up at lunch, though I'm waiting on a few chasis parts to fire it all up. Will power psu tonight or tomorrow to see if everything holds (yes. my load resistors are on the desk) - might even post a pic just to have Runeight's personal physician prescribe some digitalis... then I can compare the 2nd and 3rd generation Hybrids except for a couple of other differences (tubes, tranny, jacks, attenuators, etc) - never ceteris paribus, eh?

 

[runeight]

Version 1 was the original proto. Version 2 was the original proto with resistor changes to the emitter followers.

Version 3 is what we have now and if there are future boards, this is what they will be.

 

[Emooze]

Version 1 = red boards
Version 2 = green boards
Version 3 = black boards right?

Also, my amp is all soldered together, I have enough time tonight after work I'll be giving it a test run, otherwise it'll be tomorrow after I clean the boards and heatshrink all the exposed connectors.

 

[runeight]

LOL. Close enough.

 

[pabbi1]

Also note, for those playing along, we had a 0 Generation version that laid the groundwork for where we are now.

So, technically accurate is:

Gen 0 - Green boards
Gen 1 - Red boards
Gen 2 - _same_ Red boards, with a resistor mod, and ccs protoboard
Gen 3 - Black boards

If anyone is interested in a "Collectors Edition" of Red hybrid boards, let me know. Also, if anyone wants to try the 2sc3675 in place of the 5042, I have enough for 3 sets.

 

[Beefy]

Quote:

Originally Posted by pabbi1 /img/forum/go_quote.gif Also, if anyone wants to try the 2sc3675 in place of the 5042, I have enough for 3 sets.

Looking at the data sheets, I can't see any major differences in the specs between those two. Am I missing something?

 

[studeb]

another silly question, what size are the mounting holes on the PCB?

My standoffs do not fit.

 

[sachu]

Quote:

Originally Posted by studeb /img/forum/go_quote.gif another silly question, what size are the mounting holes on the PCB? My standoffs do not fit.

All of Alex's boards are designed for 4-40 hardware

 

[runeight]

They should clear a 4-40 screw.

 

[runeight]

Quote:

Originally Posted by Beefy /img/forum/go_quote.gif Looking at the data sheets, I can't see any major differences in the specs between those two. Am I missing something?

No you're not. They are nearly identical which makes the Sanyo a very good sub.

 

[Beefy]

Ah, I got the impression earlier that the Sanyo would actually be better, but was confused when they were so similar

 

[runeight]

Right. What I meant to say earlier is that the sanyo is a better sub than the ksc5027. Although the 5027 is not a bad sub at all if needed.

 

[sachu]

both versions of the boards are all populated...will get around to testing them this week..ordered a few more 100V zeners in case i might want to change the zener string.

 

[wiatrob]

Quote:

Originally Posted by pabbi1 /img/forum/go_quote.gif Also note, for those playing along, we had a 0 Generation version that laid the groundwork for where we are now. So, technically accurate is: Gen 0 - Green boards Gen 1 - Red boards Gen 2 - _same_ Red boards, with a resistor mod, and ccs protoboard Gen 3 - Black boards If anyone is interested in a "Collectors Edition" of Red hybrid boards, let me know. Also, if anyone wants to try the 2sc3675 in place of the 5042, I have enough for 3 sets.

Technically, there were both Green and Red Gen 1 boards, but who's counting