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Preamplifiers / Re: Orange 86 Build Thread
« Last post by guavatone on Today at 03:23:16 PM »
I’m not clear on your question. Switch is A,B and C. Position A bypasses PAD. B and C are -15 and -20 respectively.

Can you tell more about the DC heater setup? Transformer specs?  Regulated? For regulated 6.3V you really need an 8-10V transformer.

6.3 x 1.414 = 8.9V leaving only 2.6V difference which a close margin for Regulators
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paypal possible - just ask me any questions you have. open for offers.


Interested!
The only question I can think of - what's the price+shipping inside EU?

:)

Luka
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Preamplifiers / Re: Orange 86 Build Thread
« Last post by iomegaman on Today at 02:19:58 PM »
I hate to be a dunce here, but I am going through my dual O86 and cleaning up my messes (lots of bad wiring on my part, I've learned better tools and slower approach makes better results)...

Anyway, I JUST found out I had my PSU resisted to ONLY be one channel and am fixing that...

But I still have two lingering questions...

My DC heater voltage is only giving me about 4 V, not the 6.3v as advertised...I might switch to AC heaters if I cannot sort the short...where should Iook to find the missing 2.3 volts since my AC coming out of the Tranx is 6.3? Or is 4 volts close enough?

Second...I originally had the pad switch jumpered and out of circuit, even though I populated it  and wired it up...as I go and re-do the DI board I notice "SW A and SW B" going to SW-1 on schematic...and like a dufas I do not remember where the respective "A and B" are on the actual switch BUT I do have to empty pads on it...I am assuming those are "A and B" but they are not labelled...anyone know offhand if I am correct and if so which is which?

One pad is in middle of switch (I assume A) one is on edge of switch (B?)


Sec
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Drawing Board / Re: Neve 1290 questions
« Last post by Spencerleehorton on Today at 01:37:03 PM »
I’ve got the 553 eq going now and need to connect this to the 1290.
Hopefully it will connect ok?
I can see K and C connect to the low frequency, and I can see it connects to P.
Would like a bit of advice to connect it to the 1290 if anyone can help please.
I’m going by the original 1073 and the EZ1290 schematic.
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Right, finally had a bit of success with one pcb!
I’m getting good voltages and all pots work, even though they are 5k rather than 10k.
I’m going to try and connect these to the Neve 1290 and see how they sound.
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I think the altec 9067b is designed following this topology...
The Westfinga high pass filter based in the Altec also has this topology...
Please post schematics, can't find them.
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Black Market / Re: FS: Friend-Chip Digi Max 32
« Last post by justanalogue on Today at 11:36:02 AM »
And another price drop!!

Kind regards,

Willem
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Brewery / Re: 🤔
« Last post by midwayfair on Today at 11:19:24 AM »
I keep looking for evidence that the page was created on April 1st.
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Filters/Equalizers / Re: G-PULTEC problems, please help!
« Last post by weiss on Today at 10:41:47 AM »
not sure if this helps..

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I think the altec 9067b is designed following this topology...
The Westfinga high pass filter based in the Altec also has this topology...
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