#pennypincher 5e3p 'X' -- first timer; amalgamated "kit"... DIY info

swapped out volume pot; now fully operational

also, the 'wooooshhh' noise went away as well



looked through my tubes and put a 12at7; made a nice difference
lot of fun; so touch sensitive!

continuing on cabinet; have to change grill cloth on the one I'm matching:

20170315_104610 by ecoast posted Mar 15, 2017 at 11:21 AM

 

Message_1489613902460 by ecoast posted Mar 16, 2017 at 6:55 AM

Message_1489613929036 by ecoast posted Mar 16, 2017 at 6:55 AM

20170315_174142 by ecoast posted Mar 16, 2017 at 6:55 AM

 

yessir; synopsis to follow!

must....resist...urge....to ......build




........'NOTHER TUBE AMP!

 

really enjoying it so far; I think it'll be loud enough with 6v6/large x-formers to keep up with acoustic drum set; we'll see Thursday.
I just got some 5881wxt so I'll roll them in later; maybe does a bias check?!?!

definitely want to attenuate volume; or rather, get more control

I'm thinking @robrob 's master volume, but what would give me more useable volume control range?

also thinking fixed bias/cathode w/switch while I'm in there.



So far

cab wood $18
baffle ~$0~ plywood on hand
black paint on hand
adhesive on hand
grill cloth (for both; changing existing) both will be tan; was $12 (1/2 is $6) shipped for 2pc. 24" x 24" ebay
handle; brown stitched type, $10 shipped ebay
8 chrome corners $6.06 shipped amazon(add on item)

MIC eBay kit; w/tubes $132
misc hardware, screws, bolts, finish washers $10
tolex glue $10
speaker $35
wber x-formers ~$100 shipped
$6 labels for labelmaker; controls

$333.06 +/-
best I could do; am I forgetting anything?


worth every penny

 

ok; tonight with the band/acoustic drums

can't wait; 5881's are sounding DELICIOUS

 

so that was a couple days ago; and, boy, WAS IT LOUD!
--I should have brought the 6v6's w/me to swap out!
Whereas they are ALWAYS telling me to turn up, well now it was turn DOWN!

Bwahahahahahahaha!


so today, I put the first change in; https://robrobinette.com/5e3_Modifications.htm#Add_Master_Volume

...and I love it! I wish there was a 'donate' button on his site; my gosh what a resource for a newb like me!

Added some labels, too; old P-touch w/ $5 cartridge:

20170325_170126 by ecoast posted Mar 25, 2017 at 5:39 PM

20170325_170401 by ecoast posted Mar 25, 2017 at 5:39 PM

20170325_170409 by ecoast posted Mar 25, 2017 at 5:39 PM

 

Woopow!

Image1 by ecoast posted Mar 31, 2017 at 2:33 PM

"release the kraken"

 

well you're a good fella for it!
I can only imagine the traffic/bandwith use especially with all the other interesting (read: exhaustingly THOROUGH) sub-sites; I have seen similar that do have an option to donate, and I for one, generally do-- the amount of time you save me from having to scour for the info is WELL worth couple bucks sent PP...fwiw, imho, ymmv, etc.

 

So today was bit of a 'swing and a miss'; I wanted to do both a 3 way impedance and also 3-way FB switch, but I did not have the right switch for the speaker selector.

I wanted to use a mini toggle, and wasn't thinking; as Mr. Robinette's diagram "looks" like a DPDT, but if one is not using a rotary selector, you need a SP3T on/on/on, and use this diagram:

*note jumper

Impedance_switch_wiring by ecoast posted Apr 1, 2017 at 5:08 PM

So whilst I had it to bits (again) decided to mount an IEC; I have a 15' cord in my gig bag, and it's just easier as I am all over.

So three quick cuts with Mr. Angry, and then bent out the flap with pliers:

20170401_130707 by ecoast posted Apr 1, 2017 at 4:58 PM

mark & drill a couple holes, shoot a couple self-tappers, and Bob's your uncle...

20170401_131258 by ecoast posted Apr 1, 2017 at 4:58 PM

 

as far as the 3-way FB switch; it works; I like it but- a couple of times, it made the loud screech, and also a low, oscillating tone, but only at high volume in the switch position #1; furthest from 'normal'...


does this mean it's out of phase?

I played it for better part of an hour; did not happen UNLESS I walked back over and dimed it, and even then only in that one switch position.


would it not screech & howl in all three positions if out of phase?

 

10-4; wildu

 

Happily; after swapping primary wires to V3/V4 pin 3, all is as expected, no more screech/howl, and wow, what a useful function!

Most attenuation, but I can easily go BIG blackface clean in 1st FB position by swapping in 5881 & 5V4; BIG difference.


middle FB position is pretty much as Monsieur Robinette describes; good compromise, a little volume attenuation, and takes pedals--tighter bottom, for certain

3rd position is un-altered 5E3; more gain, louder, more bottom 'flub'


waiting on switch to do 4/8/16 select; that's a definite mod.


also have the resistors to do 3-way cathode bias; currently running upgrade 250/10w bias resistor and numbers are all pretty good with either 6c6/5881, so not sure I'm going to bother...anybody care to comment?





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