Quinn goes PCB

[wicker]

Nice pcb, why did you used axial caps instead of "classic" snap-in ?
I was always wondering, why I haven't seen anyone here doing a pcb dumble, I was even thinking about designing own pcb.

[Structo]

Paul he mentioned that it was a design goal to use axial caps and be able to service the amp later without lifting the board.

[wicker]

Paul he mentioned that it was a design goal to use axial caps and be able to service the amp later without lifting the board.

Ok, sorry, I did not red that too carefully

[vibratoking]

I was always wondering, why I haven't seen anyone here doing a pcb dumble, I was even thinking about designing own pcb.

There are at least several guys here doing PCB dumbles.

[glasman]

Outside of the repair issues, the big advantage to radial capacitors is that you have access to a much larger selection of high quality parts. Especially in the low ESR electrolytic range.

[qtone]

There are more posted on FB but these can give you an idea.
This is a prototype shown so not quite as clean as the productions will be.

Been burning for a week with nothing but stable operation and awesome tones... lowest noise floor of any amp I have ever built too.

The Dumble style amps will be error checked over the next couple of days and we'll see if they exceed our expectations like our Paradox does.

I feel very confident our pcb amps will continue to kill it tonally and be making a ton of players very happy indeed. :O)

[img:960:720]https://fbcdn-sphotos-a.akamaihd.net/hp ... 9397_n.jpg[/img]

[img:960:720]https://fbcdn-sphotos-a.akamaihd.net/hp ... 7050_n.jpg[/img]

Also are the 150 sss type amps like this or hand wired ?
I am reading most originals were pcb..

Looks great Shad smart Idea for the restless native types...
Guessing these are Foot switchable ..

[qtone]

Bogner is also Pcb I owned a 100b early version Bogner ecstasy..
It had several boards with ribbon cable.. also molex connectors ..
The molex connector burned up inside and caused problems.
They fixed it and I avoided having to get a new board in there..

I was bummed at first when I saw the pcbs but id been playing it and loving it and thought who cares....you just were having a field day with this amp so point to point or pcb what ever it takes to get you to playing your ass off right ?

I finally sold that Bogner and once the molex connector issue was fixed by Bogner it was a tank again....

That amp had great tone though when it was 100% on no issues.
If you can avoid molex at all damn cost I would.

Yorg @ Bogner guy told me to hard wire it but I was nervous doing that and had not soldered to pcb before so outside of replace a molex connector and resoldering to that I sent it back.

I had hours of fun with that amp and it was all pcb.

Two of those hit Texas the first one went to Eric Johnson
The second one went to a local player and studio cat.

Ejs had a 4th channel a plexi channel by itself..
I opted for the 2nd amp which sounded better by then
Ejs amp was not sounding too great.

It was sent back to Bogner and sold to Japan.
Mine is somewhere on the east coast...

Looks like the one Joe B owns..
early one like steve vai owned.

If its hard wired into pcb and no molex connectors then id say it would
be just as good if not better then point to point.

The traces are solid and can be kept to exacting lengths gold traces id guess.

I sold that Bogner and a two rock custom reverb after comparing them both too the Peavey amp with shawn lane settings..<RIP>

They both were sold
what is inside the Peavey ?
PCB

I own one hand wired amp right now its a Quinn like Greg Ds.
The other amp on all the time is the PCB.
Both on even better.

Ive liked all the ones ive owned.

This latest idea from Quinn is smart.
I think the look is quite clean and well laid out
Tight tolerances and tight leads whats not to love ?

[Gaz]

Is it just me, but the new amp hardly look like they'd be saving much time since everything else is hand wired and the boards are hand-stuffed. Mounting turrets? That doesn't take that long, right?

I also like how the new sentiment is that PCBs are the 'dark art' rather than hand-wired amps. Funny how things change!

[Structo]

Is it just me, but the new amp hardly look like they'd be saving much time since everything else is hand wired and the boards are hand-stuffed. Mounting turrets? That doesn't take that long, right?

That was what I was wondering, seems like attaching and connecting the flying leads would take about the same amount of time.

Perhaps what the greater goal is here is consistency.
Less variables to affect tone.

But now component tolerances will play a major role.

[glasman]

Is it just me, but the new amp hardly look like they'd be saving much time since everything else is hand wired and the boards are hand-stuffed. Mounting turrets? That doesn't take that long, right?

That was what I was wondering, seems like attaching and connecting the flying leads would take about the same amount of time.

Perhaps what the greater goal is here is consistency.
Less variables to affect tone.

But now component tolerances will play a major role.

I think the goal is buildability, I learned my lessons on my first SOD amps I built in 2005-2008 timeframe. They were all eyelets and the back side wiring was terrible and took HOURS to complete for one amp. Not very good when you want to build a quanity of amps.

Once you start stacking features, the complexity almosts always warrants PCB construction. I take the similar approach on my SOD II amps and Overdrive Deluxes. All of the parts are eyeletted, and I do take the edge socket wiring back to the eyelets and not to an edge connection. But the there are a few traces on the back sides and this really helps in the construction time. But installing the 1/16", 3/32" and 1/8" eyelets is a total pain in the butt.

Here are a few pictures if my PCB based amps.

[ChrisM]

Gary that last amp is the insane, what is it? 8 relays

[glasman]

Gary that last amp is the insane, what is it? 8 relays

Yez, that is the stripped down version. The relay count can go as high as 12 depending on the options that are ordered. That is the SOD II amp.

How would you like to build that one point to point

[wjdunham]

One other consideration which I haven't seen mentioned is safety. Having the B+ for the preamp stages running on a wire underneath the preamp board was always a concern for me. It can't be inspected, and if it detaches and contacts the bottom of the chassis it could be a big safety issue if the amp is not plugged in to a properly grounded outlet. It is also a service issue for the same reasons, can't be inspected or easily replaced.
Bill

[Gaz]

One other consideration which I haven't seen mentioned is safety. Having the B+ for the preamp stages running on a wire underneath the preamp board was always a concern for me. It can't be inspected, and if it detaches and contacts the bottom of the chassis it could be a big safety issue if the amp is not plugged in to a properly grounded outlet. It is also a service issue for the same reasons, can't be inspected or easily replaced.
Bill

I guess, but that could happen anywhere in the amp, and couldn't be inspected until it was opened up.

And yeah about saving time, I guess I didn't realize how many features Shad's amps had - a million. I also personally do my turret layouts to have all the connections on the top of the board save a couple, but I think that'd be impossible for me to maintain on an amp that complex.

[mlp-mx6]

One other consideration which I haven't seen mentioned is safety. Having the B+ for the preamp stages running on a wire underneath the preamp board was always a concern for me. It can't be inspected, and if it detaches and contacts the bottom of the chassis it could be a big safety issue if the amp is not plugged in to a properly grounded outlet. It is also a service issue for the same reasons, can't be inspected or easily replaced.
Bill

Usually the wires in a D-style amp are *between* two boards, so there's no chance of it hanging down and contacting the chassis.