Heathkit - TA-28

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Heathkit - TA-28

Postby gori » 29 Oct 2007, 07:42

Hello.

I see connection diagrams of HEATHKIT TA -28 well, but there are little the inside images.
It is the image which it found at auction.
Image

It is the layout that it watches a connection diagram from this image, and it thought about.
Image

When there was a mistake, please teach it.
I am sorry in strange English.
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Postby snail » 29 Oct 2007, 12:59

Thank you Gori!!

Do you know if this is the dirt box mike farner used inside his messenger guitar??

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Postby MoreCowbell » 29 Oct 2007, 15:55

SCHEMATIC FOR REFERENCE....

Image
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Postby gori » 29 Oct 2007, 20:32

snail hello.
It is written such a thing that I read his interview.
I am a fan of MARK FANER.
I was troubled.
I made several FUZZ with a connection diagram of TA -28, but a sound same as him does not come out.
There are many mysteries.

The sound will be enabled with his messenger guitar and WEST guitar amplifier.

Because his environment was not available, I made the woolly mammoth which became the topic in this site.
I think that it is a sound to resemble closely.

http://www.inet-shibata.or.jp/~gori/markf/themove.mp3

However, there is not the woolly mammoth in those days.

I am sorry in strange English.
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Postby bajaman » 29 Oct 2007, 21:10

I am sorry in strange English

No problem - we understand - thank you for the pictures :wink: :D :D
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Postby snail » 30 Oct 2007, 12:08

Thanks again Gori, and you make yourself perfectly clear!

I guess the west amp plays a part too.

I've allways been facinated with mike's tone on "got this thing on the move" song from the red album, but never could dial it in. One of the most wicked fuzz tones ever recorded IMHO.

If anyone has any input on this one I'll be really glad to hear.

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Postby modman » 28 Dec 2007, 14:00

MoreCowbell wrote:SCHEMATIC FOR REFERENCE....

Image


Guys,
Did anybody save the schematic? Link is dead.
Going through this folder to index it, trying to get to page 8 :lol:

thanks
"The whole point of diy is diy. It's not dsoiyathodtr - do some of it yourself and then have others do the rest" (paulc)
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Postby analogguru » 28 Dec 2007, 14:39

Boaaahhh.....since eons there:
http://analogguru.an.ohost.de/001/schem ... _TA-28.gif

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Postby RLBJR65 » 28 Dec 2007, 16:04

I traced it for practice when the pics were posted. http://img120.imageshack.us/img120/4679/ta28qg6.gif

Funny how different the tone control looks when it's not drawn out in a more customary manor like in AGs schem.
I guess it's just the way you get used to seeing things.
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heathkit-ta-28 vol drop

Postby spooktone » 21 Apr 2008, 01:04

howdy i have a ta-28 i just got pots say 66' so i was wondering anyone know where the best place i can put a trip pot (internal) on the q1 to boost vol drop out?its all stock alot dry caps but i built a quck proto and was wondering anyone know whats best place to plop a trimmer inside i have schematic i drew out but?? anyone know email hensteeth@gmail.com :shock: i want to fix the drop out i heard someone long ago tell me ya can take a resistor out and drop a trimmer pot inside and it will give a nice unity gain boost to fix the fuzz to be louder w/out drop out,i have a shin-ei fuzz does same thing i just donyt wanna trash the vintage units all garage finds but good ones!!!!!!!!!!i did find a way to get 2 tones from the shin ei w/a wire and spdt mini switch..get the nasal and thicker tone nice find..anyone know email id be grateful...i have tons vintage op amps trsans,caps ect talk shop new to posts older guy into tone...thanks neat site fellas..spooky59........
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Re: Heathkit - TA-28

Postby analogguru » 21 Apr 2008, 01:26

please use the search function before you start a new topic.

thanks,
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Re: heathkit-ta-28 vol drop

Postby royaltoots » 24 Apr 2008, 13:24

spooktone wrote:howdy i have a ta-28 i just got pots say 66' so i was wondering anyone know ....



on this schematic, put a jumper across R8 for minimum intervention, or replace it with a 10K trimpot if you prefer...

Image
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