garod: Garod 831 chassis variant????

Hello I own a garod 831 modified chassis.

It is Impossible to find exact  schematic diagram on the web  or in rider's schematic   only 831 series chassis

Mobile is console...

dimensions:
height 115         width 64      depth 45         with usual  gold  garod logo,

on the mobile top:

automatic turntable  garrard RC5 made in england 

 

in the mobile  mid:

an 831 garod chassis,  normally labelled,  normal dial scale, seems really a normal 831 chassis,

BUT WITHOUT  25A6 FINAL TUBE.

instead of final tube i see a 5 pin socket...    wiring is two low level audio signals  in phase opposition   from driver  6c5

variants:  

6j8 instead of 6a8    6e5 instead of 6g5   6c5 instead of 6f5 

no final tube ...  in place of final tube only the 5 pin socket  

chassis is 100% original  never modified  never repaired

 

on the mobile bottom:

an alluminium chassis   with 4x12a5 final tubes  (push pull 2+2)   and 3 paralleled 25y5 rectifiers 

push pull output  trasformer is directly mounted  on the mobile  near the speaker

 

alluminum chassis seem made from another factory, another hand...    more cheap assembly   sure less quality,   but the 5 pin socket used for the audio  signals is the same brand on both chassis

seems a little series production or a test....     i think this because tube type is hand writed on the chassis.   ( see the pic)

Also original 831 iron radio chassis is raised by a few centimeters with an additional aluminium support, sure the same material than used on alluminium power amplifier chassis.

I'm thinking    this radio is not a mix, sure original,  perhaps a prototype  from an 831 serie base  or a little production   for me unknown  

please

i need more info

 

ps this radio comes from sweden, but power supply is always 120V              

 

 Thank You  indeed 

Ruzzante Mauro

 

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To thank the Author because you find the post helpful or well done.

I think there is a good chance that your model has just a normal cabinet and we have at the moment no picture for any of the versions. The suffix might tell us which cabinet it is.
But you could upload big sized picctures to the chassis model 831 and later when known we could transfer the pictures to the right suffix of the model page.

You can also make your questions a bit more transparent by showing the tube line out compared with the one on the model page (two lines) and tell which tubes are on which chassis. It is not an easy question. Somebody must have quite a lot of knowledge, directly about this model family ...

 

To thank the Author because you find the post helpful or well done.

Ok Ernst  thank you 

radio is actually completely disassembled because both cabinet and chassis are on restoring,

for now i can post in better resolution  only few photos that i made when it came on my home.

 There is a lot of work to do so i think it will take almost 3 - 4 months to finish.

When finished i will post better photos sure 100%.

 

before  i have made a mistake sorry   THIS IS THE EXACT TUBE LIST

 

FIRST chassis (radio):

6J8G instead of 6A8G   (same pinout)     frequency converter

6K7G    IF amplifier

6H6  audio detector + AGC

6F5G audio preamplifier

6C5  audio phase inverter -  driver

25Z5 rectifier

6E5  instead of  6G5  (same pinout) magic eye

6-126  ballast

 

SECOND chassis (audio amplifier):

4 tubes 12A5    power amplifier  2+2 push pull

3 tubes 25Y5  rectifiers

 

Bye 

Mauro

 

To thank the Author because you find the post helpful or well done.