List of ZM projects

[codyt]

This list is not exhaustive, so please include stuff I've forgotten, other circuits, or favorites posts.

Amps​

Babelfish J
A babelfish'd version of the Aleph J. Standard parts.
About possible Babelfish J interest

Babelfish XJ
A babelfish'd version of the Aleph J with SUSY (Supersymmetry). Standard parts.
Babelfish XJ , or JX …….. or whatever (Aleph X servo for Greedy Boyz)

Babelfish J2
A babelfish'd version of the FW J2. IRFP150's for the OS transistors.
Babelfish ᄅſ....or FW J2 on Steroids .... or Not your Father's J2!

Babelfish M25
A babelfish'd version of the FW M2. Standard parts.
Babelfish M25, AKA M2 on steroids, AKA M2-XA25 bstrd AKA M2 gone Berserk

Babelfish M25 R.2
A babelfish'd version of the FW M2. Standard parts. Different biasing scheme.
Babelfish M25 R.2/SET amp

Babelfish XA252
A babelfish'd version of the XA25. SOT227 OS parts, SITs optional.
Babelfish XA252 / Babelfish XA252 SIT / Babelfish XA252 SET

Boo/Pooh
Square Law PP Follower Stage, bridged or not (which are going to drive even F4)
The marriage

Il Penitente
A complimentary BJT amp, with iron FE
Il Penitente

LuDEF
DEF amp topology w/ LU1014 power JFET
LuDEF

LuDEF P
DEF amp topology w/ LU1014 power JFET – active FE (Plethora of Pinjatas)
LuDEF P

Old Soul
Germanium output transistors; BJT outputs also possible.
Old Soul

Plethora of Pinjatas/SET P
Square law OS. ZM active FE. Standard parts. Schade option (SET)
Plethora of Pinjatas/SET P amp

Singing Bush
A variation on the SE 50W amp Nelson presented at BAF 2015. SIT version; MOSFET version w/ schade
The Singing Bush

Lazy Singing Bush
A SE 50W follower amp – mu-follower arrangement. SIT, MOS, etc
Lazy Singing Bush

Choked Singing Bush
A SE common source choked amp – USE QUALITY IRON
Choked Singing Bush ..... special one for Purists and Masochists

SissySit
DEF amp with SIT and MOSFET
SissySIT

SissySit R.3
DEF amp with SIT and MOSFET; New biasing scheme
SissySIT R.3

SissySit P
DEF amp with SIT and MOSFET; uses active FE (Plethora)
SissySIT P ..... or how I proved fact of making more Hats than Pa did

SissySit (42)
DEF amp with SIT and MOSFET; fully DC coupled; footprint for K2087
K2087 musings phase two: SissySIT 42 as a cradle

Scryer
DEF OS with single common source JFET FE; fully DC coupled; footprint for K2087
Scryer ..... or how F8 met Mighty SissySIT

Steeplejack
single common source JFET FE; M25-style OS w/ Schade FB
Steeplejack ..... or how F8 met mighty babelfish M25

Stasis OS
Newly designed Stasis OS boards
Stasis Front end

Warbler
Choke loaded source follower; SIT, MOS, or Schade MOS
Warbler MOS Schade MOS SIT choke loaded follower power amp

Line-level​

Pumpkin
Balanced transistor amp for swinging the likes of an F4
Pumpkin Preamp - Perfect for F4

Iron Pumpkin; Iron Turtle
Shunt reg + buffer + AVC
Iron Pumpkin(s) and other smaller vegetable animals

Iron Pre
Shunt reg + buffer + autoformer
What's wrong with the kiss,boy ?

PSM LS
Optical line stage
Poor Serbian Man

Misc.​

Babysitter
Easy way to cool Class A amps
Babysitter for Papa's Koan

D1 OS
I/V stage from PL D1 (Gerbers)
Pass Labs D1 Dac

 

[Zen Mod]

two iterations of Babelfish J, earlier - simpler one, later one made to be scale-able

dunno, that would be it, when speaking of things finished as project

*****things to come sorta soon , being in phase of final pcb proofing:

-Il Penitente (last of autoformer gain amps, Square Law all bjt OS)
amps with P suffix, meaning active FE iteration of already known ones:
-Plethora of Pinjatas (B. M25/SET with active FE with special name, origin of series)
-Il Penitente P
-Old Soul P
-LuDEF P
-SisySIT P

****things cooking:

-Babelfish XA252/SIT/SET US
-Lazy Singing Bush
-several complete preamps, none/moderate to huge gain and swing


life is fun ........ even if I need to squeeze time, to make Kudos amps for my self, I'm obliged to make

 

[codyt]

Yes! I was wondering what the P was meaning. I’m excited for the active stuff. And the lazy stuff

 

[Zen Mod]

P is short of Plethora, simple designation, to help with nomenclature

as I'm not already confused enough, so any help in nomenclature is welcome

 

[vdi_nenna]

Which power amp is the easiest to build?

 

[peppennino]

Please stick it!

 

[peppennino]

Thanks to Cody finally found the 'Babysitter for Papa's Koan" that was lost in La Mancha

 

[codyt]

Yeah, I remember scratching my head for a long time whenever the term babysitter popped up. Finding that post helped me out a lot Plus, I built them and they work great!

 

[Zen Mod]

Which power amp is the easiest to build?

most likely Babelfish M25/SET

straightforward bolting of mosfet outputs, 2+2 simple trimpot operation per channel

 

[vdi_nenna]

Thanks ZM. Do you sell boards?

thanks,

Vince

 

[Zen Mod]

yup

 

[Zen Mod]

forgot to write - easy to find (any of these) in Swap Meet

 

[jotom750]

If you're anything like me, you're always planning which ZM amp to build next. Moreover, you can't quite remember all the options. This list is not exhaustive, so please include stuff I've forgotten, other circuits, or favorites posts. For every project listed here, there's a plethora of variations, bits of advice, etc, and it would be great to get some of those here too.

Just thought it would be nice to have a 'collected DIYA works' kinda post. If one already exists, we can disregard this one. Another option is to use the forum's search (https://www.diyaudio.com/forums/search.php?searchid=24812661) though its not especially comprehensive.

Amps


Babelfish J
About possible Babelfish J interest

Babelfish J2
Babelfish ᄅſ....or FW J2 on Steroids .... or Not your Father's J2!

Babelfish M25
Babelfish M25, AKA M2 on steroids, AKA M2-XA25 bstrd AKA M2 gone Berserk

Babelfish M25 R.2
Babelfish M25 R.2/SET amp

Babelfish XA252
Babelfish XA252 / Babelfish XA252 SIT / Babelfish XA252 SET

Babelfish XJ
Babelfish XJ , or JX …….. or whatever (Aleph X servo for Greedy Boyz)

LuDEF
LuDEF

Old Soul
Old Soul

Singing Bush
The Singing Bush

SissySit
SissySIT

SissySit R.3
SissySIT R.3


Line-level

Pumpkin
Pumpkin Preamp - Perfect for F4

Iron Pumpkin; Iron Turtle
Iron Pumpkin(s) and other smaller vegetable animals

Iron Pre
What's wrong with the kiss,boy ?


Misc.

Babysitter
Babysitter for Papa's Koan

Thanks, this is a good idea, is it maybe worth adding a note also of the main active devices and possibly power output at 8 and 4 ohms? Just a thought.

 

[codyt]

For sure. I’ll try and get some details added today.

 

[chromenuts]

Zen Mod Blog – Buddha is everywhere…….

Tab always open on PC, phone, ipad

For all those other juicy projects and easy to find pics of stuff I’m trying to build

 

[Zen Mod]

yup

just thinking how to find time to post something there

 

[jotom750]

For sure. I’ll try and get some details added today.

Thank you Cody, though I think it a really useful long term reference for all, I did not wish to initiate a lot of work for anybody. Maybe others could help with their findings, if they have built any of these designs, making this an ongoing thing?

 

[codyt]

No worries at all. I think I can at least include a one sentence summary for each in that first post. From there, my hope is that people can include any other ZM 'nuggets' here in in this post.

 

[dBel84]

@ codyt - this is MUCH appreciated - trying to navigate ZM is like trying to tame entropy itself. BUT we do love him so ..dB

 

[jotom750]

Personally I find ZM's designs easier to follow than most, what's also good is that they take account of parts availability. This type of information to me is desirable for any posted project be it power amp, pre amp, speakers etc etc. Many of the designs on DIYA are world class, some even world leading. It would be such a shame to loose them. Thanks to all that work so hard for the benefit of others.