Difference between revisions of "Denon PMA-S 10 II"
 
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'''Servicing notes'''
 
'''Servicing notes'''
  
−
Uses 180w~ at idle (5min), 200-220w music listening low power and around 650-700w at max load, incredibly inefficient design. 25mV idle current needs to be set at both amps at the same time as when its turned up you get voltage drop from the high power draw causing less mV on the other channel. Two mutlimeters needed. Outside pins for testing. (normal for transformers to hum while on due to high power draw)
+
Uses 180w~ at idle (5min), 200-220w music listening low power and around 650-700w at max load, incredibly inefficient design. 25mV idle current needs to be set at both amps at the same time as when one amp is turned up you get voltage drop from the high power draw causing less mV on the other channel. Two mutlimeters needed. Outside pins for testing. (normal for transformers to hum while on due to high power draw)
  
 
Very awkward to repair, amp board needs all transistors screws/plates off before access, limited cable length as well.
 
Very awkward to repair, amp board needs all transistors screws/plates off before access, limited cable length as well.
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Any failed part in the main power amp stage causing it to blow up.
 
Any failed part in the main power amp stage causing it to blow up.
  
−
RCA/speaker connections are not chassis ground, be careful with scope, multiple grounds  
+
RCA/speaker connections are not chassis ground, be careful with scope, multiple grounds, RCA/speaker ground to chassis is about 100ohm on mine
 +
 
 +
If has weird distortion on output, the bias is wrong. set idle current to 25mV outside pins.
  
 
Only a few made, my one was number 93
 
Only a few made, my one was number 93

Latest revision as of 21:41, 18 January 2026

Data

General

  • Manufacturer: Denon
  • Model: PMA-S 10 II
  • Type: Integrated amplifier
  • Years of manufacture: 1997 - 2001
  • Made in: Japan
  • Color: Champagne Gold
  • Remote control: yes
  • Original price approx.: 3'899 DM (UVP piece)


Technical data

Denon PMA-S 10 II-Prospekt-2.jpg


Servicing notes

Uses 180w~ at idle (5min), 200-220w music listening low power and around 650-700w at max load, incredibly inefficient design. 25mV idle current needs to be set at both amps at the same time as when one amp is turned up you get voltage drop from the high power draw causing less mV on the other channel. Two mutlimeters needed. Outside pins for testing. (normal for transformers to hum while on due to high power draw)

Very awkward to repair, amp board needs all transistors screws/plates off before access, limited cable length as well.

The two main mosfets, 2SJ216 and 2SK1303 are critical to be the same model, with other mosfets you can't get idle current correct.

Check leds are all on, if any off, it will blow up. Check with thermal camera is all ok once on as it has high power draw anyway.

Any failed part in the main power amp stage causing it to blow up.

RCA/speaker connections are not chassis ground, be careful with scope, multiple grounds, RCA/speaker ground to chassis is about 100ohm on mine

If has weird distortion on output, the bias is wrong. set idle current to 25mV outside pins.

Only a few made, my one was number 93

Remarks

















Pictures

  • Extract from brochure: Denon PMA-S 10 II

Denon PMA-S 10 II-Prospekt-1998.jpg


  • Extract from brochure: Denon PMA-S 10 II

Denon PMA-S 10 II-Prospekt-1.jpg


Reports

  • Review from "Good Old Hifi": [[1]]


Links

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