2Watt Sub Miniature Plexi

skyclmbr · Post by **skyclmbr** » Sun Nov 18, 2012 6:01 pm

Whoops, I just checked again and I get 180v to the filter caps the minute I plug in the power cable, regardless of the switch being in the off position. Seems like that shouldn't have happened, so I will check my switching set up...

JazzGuitarGimp · Post by **JazzGuitarGimp** » Sun Nov 18, 2012 7:10 pm

skyclmbr wrote:Whoops, I just checked again and I get 180v to the filter caps the minute I plug in the power cable, regardless of the switch being in the off position. Seems like that shouldn't have happened, so I will check my switching set up...

It sounds like the power switch is working just the opposite of what you're expecting. IOW, the position you think is
OFF is really ON.

skyclmbr · Post by **skyclmbr** » Sun Nov 18, 2012 7:51 pm

Hmm, I was having trouble with figuring out the wiring of the illuminated rocker switch. Looking at this, http://www.sci.com.tw/PRODUCTS/switch/% ... R13-66.htm I figured that the power from the switch should go to terminal 1, the output to the PT should be terminal 2, and terminal 3 should go to ground to allow the switch to light up. The switch lights up in the correct orientation (when I flip it on, or towards terminal 1).

Thanks for the help!
Bryan

JazzGuitarGimp · Post by **JazzGuitarGimp** » Sun Nov 18, 2012 8:13 pm

skyclmbr wrote:Hmm, I was having trouble with figuring out the wiring of the illuminated rocker switch. Looking at this, http://www.sci.com.tw/PRODUCTS/switch/% ... R13-66.htm I figured that the power from the switch should go to terminal 1, the output to the PT should be terminal 2, and terminal 3 should go to ground to allow the switch to light up. The switch lights up in the correct orientation (when I flip it on, or towards terminal 1).

Thanks for the help!
Bryan

Hi Bryan,

I agree except that Neutral (in the US) should go to pin 3, not ground. This won't affect the operation of the switch, however. If the indicator light is working properly, then the switch is likely wired correctly.

skyclmbr · Post by **skyclmbr** » Sun Nov 18, 2012 9:32 pm

Whoops, I think I'm confusing my DC and AC nomenclature. Terminal 3 has been wired to the center (neutral?) pin on the power cable jack. Thanks for the help!

skyclmbr · Post by **skyclmbr** » Mon Nov 19, 2012 1:33 am

Ok, got it working. My AC knowledge required some refreshing. VVR is still not decreasing the B+ though.

Thanks,
Bryan

skyclmbr · Post by **skyclmbr** » Mon Nov 19, 2012 3:25 am

Finally got it running!! Thanks for all the help, and thanks for the kit Dana! I haven't gotten to play it much yet but it sounds great so far. Very much a small big amp.

UR12 · Post by **UR12** » Mon Nov 19, 2012 2:42 pm

skyclmbr wrote:Finally got it running!! Thanks for all the help, and thanks for the kit Dana! I haven't gotten to play it much yet but it sounds great so far. Very much a small big amp.

Hey Congrats!!. I'll be looking forward to hear your evaluation. In response to a couple of your posts, the first 100uf cap is actually in the circuit right after the b+ diodes and right before the VVR. This means it has power on it as soon as the power switch is turned on. It will eventually bleed off through the VVR just like the rest of the caps when the power is turned off. This may take a minute. Would be interested in knowing where you biased it at. My voltage measurements with tubes installed have the B+ between 160 and 170vdc. In that range I found that -26 to -28 volts sounds best to me. Would like to hear your thoughts on your biasing

skyclmbr · Post by **skyclmbr** » Mon Nov 19, 2012 4:55 pm

Man that is a nice sounding amp. Thanks Dana, I figured out that I wouldn't be getting any response from the VVR at the solder point listed as B+ on the PCB because it's upstream of the VVR circuit. When I measured the voltage at the resistor downstream of the VVR I got the appropriate response.

Right now it's biased at -30v just because that was what was in the Lil Devil manual. It sounds great, but I'll play around with the bias a little more. My girlfriend's bro is in town for the week so I'll take advantage of his guitar chops to play around with the bias and let you know.

I haven't played a real 1987, but the Guitar Rig model is pretty decent and it tracks with that quite well, particularly with the normal input being pretty bassy. The thing just grooves. It'll do a great blues tone at around 3 or 4 on the bright channel, and I played around with a nice sounding jazz tone on the normal channel this morning. It gets a little loose at the higher distortion levels but I think so does the real deal, and hey, that's what a Tubescreamer's for right? Tightens up the bottom a little, takes a little off the top, etc.

Great amp man!

JazzGuitarGimp · Post by **JazzGuitarGimp** » Mon Nov 19, 2012 5:21 pm

It's very cool to see these coming together!

UR12 · Post by **UR12** » Mon Nov 26, 2012 2:35 pm

As of today everyone on the list for a kit has been notified. As soon as I hear back from everyone I will start PMing the alternates that wanted on the list. Three of the 10 kits have already been shipped. Good to hear that you guys are getting these up and running. If I can be of any assistance just shoot me an PM or post in this thread.

Here is the list. If you see your name please let me know your status through a PM or post.

Skyclimber Shipped
Marioverkill Shipping
JazzGuitarGimp Shipped
Cantplay Shipped
Dartanion

Myfoot Shipped
BlindDog Shipped
Orleanska Shipped
DJU Shipped

JazzGuitarGimp · Post by **JazzGuitarGimp** » Mon Nov 26, 2012 8:04 pm

UR12 wrote:As of today everyone on the list for a kit has been notified. As soon as I hear back from everyone I will start PMing the alternates that wanted on the list. Three of the 10 kits have already been shipped. Good to hear that you guys are getting these up and running. If I can be of any assistance just shoot me an PM or post in this thread.

Here is the list. If you see your name please let me know your status through a PM or post.

Skyclimber Shipped
Marioverkill
JazzGuitarGimp
Cantplay Shipped
Dartanion
Passfan
Myfoot Shipping
BlindDog Shipped
Orleanska Shipping
DJU

PM Sent

UR12 · Post by **UR12** » Mon Nov 26, 2012 8:45 pm

JazzGuitarGimp wrote:
UR12 wrote:As of today everyone on the list for a kit has been notified. As soon as I hear back from everyone I will start PMing the alternates that wanted on the list. Three of the 10 kits have already been shipped. Good to hear that you guys are getting these up and running. If I can be of any assistance just shoot me an PM or post in this thread.

Here is the list. If you see your name please let me know your status through a PM or post.

Skyclimber Shipped
Marioverkill
JazzGuitarGimp Shipping
Cantplay Shipped
Dartanion
Passfan
Myfoot Shipping
BlindDog Shipped
Orleanska Shipping
DJU
PM Sent

The ones showing shipping will be shipped out tomorrow. I will try and start one of the Microplex's this evening to add some pics to the thread so people can follow along. This is going to get fun

Structo · Post by **Structo** » Mon Nov 26, 2012 8:49 pm

Man I wish I had got on to the list. (no money anyhow)
Looks like a fun little amp.

UR12 · Post by **UR12** » Mon Nov 26, 2012 9:03 pm

Structo wrote:Man I wish I had got on to the list. (no money anyhow)
Looks like a fun little amp.

You still may have a chance. There is still one or two I am waiting to hear from. I'll let ya know.

The Amp Garage

2Watt Sub Miniature Plexi

No magic smoke

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amp power switch

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power switch

Hoooooooooo it makes noise!

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Microplex

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