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Janky-A Rigs of Doom

In fact, if one of the amps has a serial effects loop, you could probably make a phase-reversed patch cable and flip the phase of the one side that way, just on the loop jacks. That way if you're hearing the amp's internal speaker plus an extension cab, both speakers on that rig "side" would be in phase agreement, assuming phase reversal of one side was even needed in the first place.
 
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In fact, if one of the amps has a serial effects loop, you could probably make a phase-reversed patch cable and flip the phase of the one side that way, just on the loop jacks. That way if you're hearing the amp's internal speaker plus an extension cab, both speakers on that rig "side" would be in phase agreement, assuming phase reversal of one side was even needed in the first place.

I line one amp out to the second, which is part of my standard rig, but the line out from the second to the third doesn't seem to work. That is my best guess as to what it happening. There are some other ways I could try and make it work, but I'm going to leave it for now.
 
Was this until last Saturday:
Bass-Setup-250920-Take-Final-666-star-copy-small.jpg


Except for the neck of the Ibanez GSRM20 Mikro Bass, which is my main, having been transplanted to a GSRM20B Mikro Bass body in Weathered Black finish, and just having a single EMG Geezert Butler P pickup installed in it, wired directly to the output jack socket, making the bass look like this (except for the pickup not being a DiMarzio Model P but an EMG Geezer Butler P) :
GSRM20-B-Body-White-Stripes-background-Edit-44.jpg


But only having cheked out the tone of my SWR Triad I cab at home in my apartment at relatively low volume levels, where it sounded amazing, I discovered at the first rehearsal with the bass/vocals and drums/vocals duo I just started with a drummer friend of mine (first band I've been in for years), which I've been working for bass parts for for some time now, that it didn't really sound great at higher volume levels, like generic and boring in a somewhat anemic and sort of weak, thin and lifeless way, seriously lacking punch, snap and sparkle, and that my much cheaper The Box PA 502, full range PA speaker, sounded much fuller and livelier, and overall just a lot better, with more depth, punch and snap to it's tone, despite having cost me just what equals about 210$ from new, which would put it in the budget price range of PA speakers, and even make it cheaper than the Triad I cab costed me used, and considerably less than what the Triad I cab would have costed from new.

The Box PA 502 is a 300W RMS (1200W Peak) 1x15" (300W) + 1.7" tweeter horn (100W) full range PA speaker in a plastic housing, and unlike the SWR Triad I, which is a 4 Ohm cab, this PA speaker runs at 8 Ohm, meaning that my 160W @ 4 Ohm Peavey amp at maximum capacity according to the manual is only able to push the speaker with about 100W, it is however still plenty of loud enough at far from the Peavey's max capacity, as it is just me and the drummer, and that he is not the most hard hitting drummer either, and actually, despite being on the cheaper side, it was one of the PA speakers I could find which frequency response go lowest, rated to 35Hz - 20kHz (-10dB) and 45Hz - 18kHz (-3dB), which is actually lower than some dedicated bass cabs are rated to, and since I tune my bass in F# standard tuning, 2 half steps above regular 4 string E standard tuning, meaning my lowest note is at about 46Hz, it reproduce the bottom end of my signal perfectly well, and is actually more bassy and tight in the low end than the SWR, sounding very close to what I hear in my headphones, a pair of proper quality, near flat response, studio, Senheiser HD 380 Pro, at home with my ampless setup, which is also what I use with the Peavey combo, untilizing its Effects Return poweramp input, and having a faux EQ based cab sim before it, basically just rolling off the upper treble frequencies, as well as using a 40Hz HPF.

I haven't got a picture of how my setup looks now, but I have the Peavey Solo Special 112, modded with a speaker out jack socket, and the build in 12" speaker unit disconnected, standing on the ground, and then the The Box PA 502 PA speaker connected to it, standing on top of the SWR Triad I cab, which currently basically just functions as a glorified speaker stand.

The The Box PA 502 looks like this though (picture taken from Thomann's web page) :
12315717_800-jpg.jpg



Currently making my "Janky-A Rig of Doom" look like this in written form :

(*pedals listed in [ red/bold/underline text ] are "always on" effects*)


4 string 28,6" scale Ibanez GSRM20 neck + GSRM20B body Mikro Bass (equipped with an EMG Geezer Butler P pickup, wired directly to the output jack socket, and strung with gauge .95 - .75 - .55 - .40 D'Addario XL nickle roundwound steel core strings, tuned in F# standard tuning, 2 half steps above regular 4 string bass E standard tuning) ->>

TC Electronic SpectraComp (always on compressor) ->> TC Electronic Sub'N'Up Mini (always on digital polyphonic octaver, used as an 1 octave up effect mixed with clean bass signal, giving an effect similar to that of an 8 string "octave" bass, with pairs of respectively bass and octave strings) ->> Boss LS-2 [A+B Mix <-> Bypass] (always on, parallel effect loops mixer/switch) ={ [Loop A Send] ->> Joyo Orange Juice (always on low gain overdrive, really primarily used to enhance harmonic content, [Tone] set at about 11 o'clock, [Voice] set to boost a wide curve around a 800Hz center frequency about +3dB pre gain stage, always mixed with the clean {bass+octave up} signal from parallel effects [Loop B])) ->> [Loop A Return] ->||<- [Loop B Send] ->> (empty effects loop used as clean {bass+octave up} signal blend for the Orange Juice overdrive in parallel effects loop [Loop A]) ->> [Loop B Return] ([Loop A] + [Loop B] mixed at an about 55/45 ratio) }=>> Boss LS-2 [A+B Mix <-> Bypass] (parallel effect loops mixer/switch) ={ [Loop A Send] ->> Joyo Orange Juice (low gain overdrive, always either used to boost the Behringer phaser in front of it and make it a bit brighter or stacked into the Metal Zone in front of it) ->> Boss MT-2 Metal Zone (distortion, always used with the Orange Juice overdrive behind it stacked into it, and always used mixed with the Rat distortion in parallel effects [Loop B]) ->> Behringer VP1 Vintage Phaser (EHX Small Stone clone, used in the high feedback and deep sweep mode, always used boosted by the Orange Juice stacked into it, and almost always used mixed with flanger in parallel effects [Loop B]) ->> [Loop A Return] ->||<- [Loop B Send] ->> Monarch MFL-22 (flanger, most often used mixed with phaser in parallel effects [Loop A]) ->> Mosky Black Rat (RAT clone, in original classic RAT [Vintage] mode, quite raunchy, fuzz-esque, high gain distortion, always used mixed with the Metal Zone distortion in parallel effects [Loop A]) ->> [Loop B Return] ([Loop A] + [Loop B] mixed at an about 50/50 ratio) }=>> Artec SE-EQ8 Graphic EQ (always on) ->> Zoom G1Xon (Used for an always on 2 band parametric equalizer, and additionally used for 3 patches (all including the EQ at the end of the chain), which respectively are as follows: Tremolo+VintageCE (Boss CE-1 emulation), chorus patch :-: Plate Reverb+HD Hall Reverb+Tape Delay, prominent reverb patch :-: Plate Reverb+HD Hall Reverb+Tape Delay, extremely thick lush reverb patch, used as a reverb pad effect with volume swells) ->> NUX Tape Core Deluxe (Roland Space Echo tape delay emulation) ->> Zoom B1 Four (always on 2 band parametric EQ, subtle spring reverb, and faux, EQ based, cab sim, consisting of a 2 band parametric EQ set as follows: [Freq=10kHz Q=1 Cut=-18dB] ; [Freq=20kHz Q=0.5 Cut=-20dB], plus a lush Church reverb model with a line selector behind, making it switchable on/off)

->> EHX Black Finger (always on tube driven optical compressor, dialed in to a quite subtle compression, primarily functioning as a tube preamp stage) ->> Art Tube MP Project Series (tube preamp, with HPF at 40Hz) ->> [Effects Return] (poweramp input) of Peavey Solo Special 112 (160W, solid state guitar combo, with the build in 4 Ohm 12" speaker unit disconnected and instead hooked up to a The Box PA 502 PA speaker) ->> The Box PA 502 (full range PA speaker with 1x 15" + 1.7" high frequency tweeter horn)


However, even if I do like the tone the Peavey's poweramp delivers, I suspect soon to probably ditch the Peavey combo as the amplifier used for this setup for a poweramp (likely to be a Class D one) that will allow me to take full advantage of the The Box PA 502 PA speaker's 300W capacity, as said currently only being able to run it at max about 100W with the Peavey, since the speaker out impedance of the Peavey is 4 Ohm and the PA speaker is 8 Ohm, plus it will make it easier to transport, the The Box PA speaker also being a good deal lighter than the Triad I cab.
 
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I have the immediately previous older brother to your Special 112 combo: a 1987-ish Special 150. 150 watts at 4 ohms.

I have used it at band practice as a backup bass amp a few times, driving a Peavey SP-5ti PA cab, then later my AudioKinesis 4 x 8". I just unplugged the internal speaker and connected the amp output to the cab, using the clean channel for tone shaping. It worked really well and was loud enough for loud basement practices.

I think mine might have different EQ than yours: it's passive treble-middle-bass plus active presence. I think the presence is around 8 kHz? And there's a bright switch that gives a boost centered on 2 kHz.

It's been awhile since I used it for bass, so I don't remember how I set the EQ exactly, but I remember running the treble and middle pretty high and the presence rolled down left of center for some cut, and it seemed to do p-bass with flats pretty well.
 
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I have the immediately previous older brother to your Special 112 combo: a 1987-ish Special 150. 150 watts at 4 ohms.

I have used it at band practice as a backup bass amp a few times, driving a Peavey SP-5ti PA cab, then later my AudioKinesis 4 x 8". I just unplugged the internal speaker and connected the amp output to the cab, using the clean channel for tone shaping. It worked really well and was loud enough for loud basement practices.

I think mine might have different EQ than yours: it's passive treble-middle-bass plus active presence. I think the presence is around 8 kHz? And there's a bright switch that gives a boost centered on 2 kHz.

It's been awhile since I used it for bass, so I don't remember how I set the EQ exactly, but I remember running the treble and middle pretty high and the presence rolled down left of center for some cut, and it seemed to do p-bass with flats pretty well.

Even if I currently just use mine for it's poweramp section I did in fact try plugging my bass into it's regular preamp input first, and it does indeed work really well and sounds great used as a bass amp with the build in 12" guitar speaker disconnected and hooked up to a proper bass cab, even it's tone controls are still very useful for bass.

And I wouldn't have hesitated to use it this way either if it was not for the fact that I was determined to use an "ampless", external preamp + cab sim, setup, in order to achieve an as consistent tone as possible, with me having as much control over it as possible, no matter if I am practicing with headphones at home, rehearsing with a band, or going through a venue's PA system when gigging.

As I wrote in my previous reply I have my Peavey Special combo modded with a speaker out jack socket mounted in a hole that I drilled in the middle wooden ledge that goes across the back of the combo and then have a jack plug soldered to the wires of the build in speaker, so that I at any time can either use whatever external cab that I'd like to or just plug in it's original build in 12" Scorpion guitar speaker unit as I see fit.

The dedicated overdrive/distortion channel is horrible though, otherwise it is a genuinely great amp for both guitar and bass, the clean channel on it sounds amazing, and it's original build in 12" Scorpion speaker unit sounds absolutely awesome too with guitar.
 
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Even if I currently just use mine for it's poweramp section I did in fact try plugging my bass into it's regular preamp input first, and it does indeed work really well and sounds great used as a bass amp with the build in 12" guitar speaker disconnected and hooked up to a proper bass cab, even it's tone controls are still very useful for bass.

And I wouldn't have hesitated to use it this way either if it was not for the fact that I was determined to use an "ampless", external preamp + cab sim, setup, in order to me being able to achieve an as consistent tone as possible, with as much control over it as possible, no matter if I am practicing with headphones at home, rehearsing with a band or going through a venue's PA system when gigging.

As I wrote in my previous reply I have mine modded with a speaker out jack socket mounted in a hole that I drilled in the middle wooden ledge that goes across the back of the combo and then have a jack plug soldered to the wires of the build in speaker, so that I at any time can either use whatever external cab that I'd like to or just plug in it's original build in 12" Scorpion guitar speaker unit as I see fit.

I plan to do that at some point also. I've considered just using a switching jack, so plugging in an extension cab would automatically disconnect the internal speaker...but am not sure how reliable the little springy contacts in there would be at transmitting up to 150W of speaker current. More research needed, I guess.
 
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NJAD!

An ad for a crusty old Yammie popped up on offerup over the weekend, and I couldn't resist. I love my PB-1, and I've always wanted the narrower head version of this amp, but this one was singing it's janky siren song directly into my brain.

ad_sceenshot.jpg


It fired up and had some scratchy pots, so I opened it up and found it to be pretty clean inside, far less animal remains than I'm accustomed to at this price point.

IMG_20210419_175023.jpg


The sharp eyed will notice random electronic bits rattling around in the chassis. I soldered them back down securely for safe keeping and fixed the scratchies, and replaced the "bumper" speaker with an EVM-15B that I've had on the shelf for ages.

This thing is absurdly cumbersome and heavy, and it smells like a vape shop (previous owner was a young stripper who said it doubled as a night stand.) It doesn't sound like my PB-1, but it's not bad at all. It's currently living in my garage until the funk can be aired out, then I might start thinking about how to get it upstairs.

IMG_20210420_191935.jpg
 
Awesome; great to get a @Bugeyed Earl update. Cool amp; I played an early G50-112 once several years ago and really loved it; it seemed to combine the best aspects of fast solid state transients and warm, full tone somehow. I have regretted not buying it more than once. It too was pretty heavy.

I've read that old some Yamaha SS guitar combos have some circuit components that are pretty much unobtanium now. Not sure if the bass amps share that aspect...but on the other hand, I have never heard one anecdote about unreliability with old Yamahas, and hey, $50!

What's it weigh? Is it more than, say, the Chöad Håmmer?
 
NJAD!

An ad for a crusty old Yammie popped up on offerup over the weekend, and I couldn't resist. I love my PB-1, and I've always wanted the narrower head version of this amp, but this one was singing it's janky siren song directly into my brain.

View attachment 4242155

It fired up and had some scratchy pots, so I opened it up and found it to be pretty clean inside, far less animal remains than I'm accustomed to at this price point.

View attachment 4242117

The sharp eyed will notice random electronic bits rattling around in the chassis. I soldered them back down securely for safe keeping and fixed the scratchies, and replaced the "bumper" speaker with an EVM-15B that I've had on the shelf for ages.

This thing is absurdly cumbersome and heavy, and it smells like a vape shop (previous owner was a young stripper who said it doubled as a night stand.) It doesn't sound like my PB-1, but it's not bad at all. It's currently living in my garage until the funk can be aired out, then I might start thinking about how to get it upstairs.

View attachment 4242142
Yep, definitely janky! I had one, tried to have a tech fix an annoying buzz in it that prevented me from getting a clean sound out of it. Alas he was unable to do so, and eventually I was able to move it along. Cool find!
 
BD8EC6D4-C3B6-4E8F-A515-AE23786B5674.jpeg
Man, even if it's totally cherry, that Kray-Zee series I grille cloth would let it fit in here. Yamaha was definitely following their own aesthetics path in those days...
Alrighty then! The tolex is peeling on the cab, and it sounds best with the distortion halfway up. Not bad for a c-note!
 
Awesome; great to get a @Bugeyed Earl update. Cool amp; I played an early G50-112 once several years ago and really loved it; it seemed to combine the best aspects of fast solid state transients and warm, full tone somehow. I have regretted not buying it more than once. It too was pretty heavy.

I've read that old some Yamaha SS guitar combos have some circuit components that are pretty much unobtanium now. Not sure if the bass amps share that aspect...but on the other hand, I have never heard one anecdote about unreliability with old Yamahas, and hey, $50!

What's it weigh? Is it more than, say, the Chöad Håmmer?

Thanks! I don't think there are many unobtanium bits, it's a pretty simple circuit and everything on the schematic is well marked. I need to find a couple of replacements for the eq pots, two of those are beyond salvage.

This weighs approximately two Chödehammers, but it has twice as many handles, so it balances out.

Yep, definitely janky! I had one, tried to have a tech fix an annoying buzz in it that prevented me from getting a clean sound out of it. Alas he was unable to do so, and eventually I was able to move it along. Cool find!

I wonder if this is your old amp? It definitely has a rattle down on the low notes, boosting the bass is not really an option.

Sweet Yammie and a nice price! My first real amp was the B100-II head version. Great tone and surprisingly loud.
My current rehearsal rig is a B100-I head and matching 1x15 cab. I'd post it here but it's just not jank enough.

I think that yours is probably grandfathered in. I was reluctant to post this one because it's the first one I've found that had all the caps on the knobs.
 
NJAD!

An ad for a crusty old Yammie popped up on offerup over the weekend, and I couldn't resist. I love my PB-1, and I've always wanted the narrower head version of this amp, but this one was singing it's janky siren song directly into my brain.

View attachment 4242155

It fired up and had some scratchy pots, so I opened it up and found it to be pretty clean inside, far less animal remains than I'm accustomed to at this price point.

View attachment 4242117

The sharp eyed will notice random electronic bits rattling around in the chassis. I soldered them back down securely for safe keeping and fixed the scratchies, and replaced the "bumper" speaker with an EVM-15B that I've had on the shelf for ages.

This thing is absurdly cumbersome and heavy, and it smells like a vape shop (previous owner was a young stripper who said it doubled as a night stand.) It doesn't sound like my PB-1, but it's not bad at all. It's currently living in my garage until the funk can be aired out, then I might start thinking about how to get it upstairs.

View attachment 4242142
My buddy's dad gigged something like this for quite a while.
 
View attachment 4242208
Alrighty then! The tolex is peeling on the cab, and it sounds best with the distortion halfway up. Not bad for a c-note!
I just saw this exact combination somewhere (pawn shop?? IDK) but they wanted $399 for it. :rollno:
I wonder if this is your old amp? It definitely has a rattle down on the low notes, boosting the bass is not really an option.
Don't think so - mine was cleaner - but that doesn't mean it wasn't abused on it's way down to South Florida. Does yours have the original packet of spare fuses stapled to the inside of the cab near the amp section? Mine did - I thought that was cool. And I don't think mine said "BASS" on the front, and it only had one EQ section. Memory is fuzzy there.
 
I like how all of @Bugeyed Earl 's janky-A amp stories seem to involve a period of airing out in the garage. It adds color. Between silverfish attacking the speaker cone, damp climate funk, termite colonies and now stripper-vaping fumes, these stories never disappoint. They go nicely with the stagnant bat-water Peavey folded horn cab saga from a year or so ago.