Hafler p1000 amp Transformer Specs

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znjamznjam

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Mar 16, 2016
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I need specs for power transformer in the power amp Hafler P1000
I will make custom transformer for this amp but I cannot find specs for transformer (V+A/VA)
Can somebody help with this info?

Thanks in advance

Regards
 
Hallo

Thanks for replay.
I put service manual in attachment.

regards
 

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  • MAN1482B_P1000_man.pdf
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Ok, for comfortable 55/60W per channel into 8 ohm, which means some 22 V RMS, you´ll need main rails about +/-42V to +/-45V , so a center tapped secondary of some 30+30 to 32+32 VAC.

Current/Power? ... they claim : Consumption 260 VA so that one does not need to be guessed :D

So search/order a 32+32 VAC 260VA transformer and all will be fine.

A second published parameter which also hints at +/-42 to +/- 45 VDC rails is that main filter caps are rated 50V  so rails not surpassing 45V are fine.

As additional data for your custom winder, tell him transformer mounting holes spacing or available diameter and height if a toroid so the one he makes can fit.

1U (44 mm) enclosures are very low height, to boot you lose a couple mm (sheet metal thickness) and you end up with very tight space.

Mains voltage of course must match your Country.
 

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