Dan Armstrong - Yellow Humper (early version?)

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
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Professor SourTone
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Post by Professor SourTone »

Which version is this?

https://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... otohosting

This is an Armstrong Yellow Humper. It's just plain "Armstrong" rather than "Dan Armstrong" and made in the UK. I ask because I have a similarly marked Orange Squeezer. It has some age, predating the non-Armstrong reissues.

Does anyone know the sequence of manufacture of these boxes? Armstrong, Mutron, reissue etc?

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ichian
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Post by ichian »

Professor SourTone wrote:Which version is this?

https://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... otohosting

This is an Armstrong Yellow Humper. It's just plain "Armstrong" rather than "Dan Armstrong" and made in the UK. I ask because I have a similarly marked Orange Squeezer. It has some age, predating the non-Armstrong reissues.

Does anyone know the sequence of manufacture of these boxes? Armstrong, Mutron, reissue etc?
Maybe it is a Pre-Mutron Version.

Professor SourTone
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Post by Professor SourTone »

It seems likely, but hard to know for sure. Funny how the seller thinks it's the "British version of Mu-tron's Purple Peaker", which I also have and is a different effect.


I think I've posted this in the wrong forum - should probably be in Stuff Seen for Sale...

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Post by analogguru »

I ask because I have a similarly marked Orange Squeezer. It has some age, predating the non-Armstrong reissues.
If you have one, how about guts ?
Or at least what is written on the IC ?

With that information it is much easier to date the unit.

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Post by Professor SourTone »

I've got a backlog of guts I owe you guys. It will be a few days, as my house is still full of builders...

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Post by modman »

Professor SourTone wrote:I think I've posted this in the wrong forum - should probably be in Stuff Seen for Sale...
Don't agree - valid thread - had never even seen these plain "Armstrong" boxes before. I backed up the images for when they go offline.

good thread, really.
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Post by Professor SourTone »

Looking around, I find three UK variants (at least)

No Dan, Made in UK on the back
Dan, Made in UK on the back
Dan, made by Wareham Electronics on the back

Torchy

Post by Torchy »

The Yellow Humper was a Purple Peaker revoiced for bass guitar (I asked at the DA website). ROG (aka homewrecker) already had the PP with mods, and Brian Tremblay came up with this ...
Image

Image

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Post by analogguru »

The Yellow Humper was a Purple Peaker revoiced for bass guitar (I asked at the DA website).
That´s right.....

but the schematic shown doesn´t represent the yellow humper.

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Post by modman »

There are some original Musictronics schematics around (never forget the index)

Yellow Humper factory schematic (1975)
Purple Peaker factory schematic (1975)

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Post by Bernardduur »

Big question on my mind:

How does it sound?

As a bass player I would love another "specific" effect on my bass!
'No more....... loud music.......'

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Post by analogguru »

Bernardduur wrote:Big question on my mind:

How does it sound?

As a bass player I would love another "specific" effect on my bass!
FSB-member "ichian" made a complete analysis (of both units) here:

http://homepage3.nifty.com/ichian/analo ... _freq3.htm

here is the babelfish-translation:

http://babelfish.altavista.com/babelfis ... _freq3.htm

analogguru
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Torchy

Post by Torchy »

analogguru wrote:but the schematic shown doesn´t represent the yellow humper.
I never said it was the original schematic. The original YH sounds very like the PP, so the schematic I showed was a revoice to our tastes. The basic schematic is the same, the values are different for a different response. You can use the vero layout with the original values. Or not. Your choice.

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Post by analogguru »

Torchy wrote:
analogguru wrote:but the schematic shown doesn´t represent the yellow humper.
I never said it was the original schematic. The original YH sounds very like the PP, so the schematic I showed was a revoice to our tastes. The basic schematic is the same, the values are different for a different response. You can use the vero layout with the original values. Or not. Your choice.
oh, oh, oh..... sorry.....

I only wanted to avoid confusion and mentioned it.
Now we have a link to the factory schematic and everything should be ok ?

analogguru
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Post by puppiesonacid »

does anyone else realize that the purple peaker and yellow humper are listed as craig anderton designs when they are dan armstrong's? is there something I missed? :scratch:

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Post by rvargas »

Hi all,

Somebody still has the images for the yellow humper schematic? Geocities went down and a ton of info with it.. :(

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Post by bigmufffuzzwizz »

Modman
Is it possible for you to repost those two schematics (purple peaker and yellow humper)? Thanks!!
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