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Old 13th April 2014, 10:48 PM   #1
hum4god is offline hum4god  United States
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Default Help me identify this amp i just picked up (aleph J?)

Hi

i just picked up an amp on ebay and was wondering what it is ?
the seller had no idea but it reminded me of some first watt or aleph j clones i have seen in the past so i bid for fun and actually won the amp. it works fine and sounds great and yet i would really like to know if this is a first watt clone or aleph j or perhaps something different .
i attached a photo for identification.
thanks

rawson 002.jpg
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Old 14th April 2014, 01:26 AM   #2
Zen Mod is offline Zen Mod  Serbia
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most probably Aleph J , if you have 2 Jfets on left side , one bjt above them and two bjts in middle and all mosfets of same type

it reminds of some Rawsons works , (holes in bottom ) so better give us more pics , to see is it fire in the house case , as many of them
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Old 15th April 2014, 02:58 PM   #3
hum4god is offline hum4god  United States
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Quote:
Originally Posted by Zen Mod View Post
most probably Aleph J , if you have 2 Jfets on left side , one bjt above them and two bjts in middle and all mosfets of same type

it reminds of some Rawsons works , (holes in bottom ) so better give us more pics , to see is it fire in the house case , as many of them
thanks , i will have to look closer and see if i can identify the mosfets and jfets .
what is a bjt ?
i might take more photos also and post later.
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Old 15th April 2014, 03:20 PM   #4
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Quote:
Originally Posted by hum4god View Post
what it is
- 1k resistor above the zener
- 1k5 + 3k32 to the right of the zener
- 1k resistor under the differential pair
- 392R resistor under the yellow mica cap.
=> aleph j
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Old 15th April 2014, 03:27 PM   #5
Zen Mod is offline Zen Mod  Serbia
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new spectacles ?

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Old 15th April 2014, 03:34 PM   #6
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Quote:
what is a bjt ?
Bi-polar Junction Transistor. PNP/NPN types.
Jfets and Mosfets are P and N channel types.
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Old 15th April 2014, 03:45 PM   #7
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Originally Posted by Zen Mod View Post
new spectacles ?
Different lcd-screen cleaner.
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Old 15th April 2014, 05:29 PM   #8
hum4god is offline hum4god  United States
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some more closeup photos i took :
Attached Images
File Type: jpg aleph j raw 007.jpg (719.5 KB, 297 views)
File Type: jpg aleph j raw 006.jpg (579.1 KB, 266 views)
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Old 15th April 2014, 05:32 PM   #9
hum4god is offline hum4god  United States
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some more
Attached Images
File Type: jpg aleph j raw 011.jpg (613.1 KB, 258 views)
File Type: jpg aleph j raw 012.jpg (621.3 KB, 247 views)
File Type: jpg aleph j raw 023.jpg (732.4 KB, 251 views)
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Old 16th April 2014, 01:36 PM   #10
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how much did you paid?
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