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Old 7th January 2004, 01:03 PM   #1
Delboy is offline Delboy  United Kingdom
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Question Audiolab 8000a mods

I am currently using an Audiolab 8000a integrated amplifier. This amp has the ability to seperate the pre and power stages. I would like to do this in order to use it as a pre amp but have no idea what the internal mod consists of.

Does anyone have any ideas?
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Old 7th January 2004, 03:04 PM   #2
Cobra2 is offline Cobra2  Norway
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Default Here you go...:

http://www.instruction-manuals.co.uk...ify/Z8000a.htm

Arne K
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Old 7th January 2004, 04:44 PM   #3
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Default Instructions.

My Pal did not get the circuit diagram but got the following instructions after it was made clear that it will void all warranties.

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" To separate the pre/ power amplifier section and make the power amp 'in' operational, remove the two linking 560R resistors (found at positions R979 and R980) to positions R985 and R986."

We did do this and it works well.

Hope it helps.
Cheers,
Ashok.
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Old 7th January 2004, 09:29 PM   #4
Steven is offline Steven  Netherlands
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I have a very bad copy of a copy of a copy of the circuit diagram and PCB layout of the Audiolab 8000A, dated 20-10-84. I think a scan will not show enough details, because of the bad quality already.
I do not have such a unit so I cannot check anything in reality, but from the papers I would conclude that the only thing you have to do is to set the switch SW5 to the other position. SW5 is mounted on the internal PCB between the CD and TAPE 1 sockets. From the layout, I would say it is a 2-pole slide switch with the center connections going to the power stages (left and right), the connections closest to the rear are going to the Power amp input sockets. The connections closest to the front are going to the tone control amplifier via 2 resistors of 330 Ohm, mounted very close to SW5. These connections also go to the Preamp output sockets.

I could not find any of the resistors Ashok is referring to, so probably this is about a different amplifier, or my schematics do not fit to your amplifier.

Succes,

Steven
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Old 7th January 2004, 10:28 PM   #5
Delboy is offline Delboy  United Kingdom
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Default Thanks

Thank you for your varying, if different, suggestions. I shall try and see who has got it right or maybe there are other opinions out there.

I will let you know.
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Old 8th January 2004, 02:10 AM   #6
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Default Mfg year.

The Audiolab we used was bought in 2000 . It was new and was bought from a dealer. So it must have been manufactured round about that time.
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