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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Hi guys!
Your help needed.
I have Exposure 3010S2 stereo poweramp, where I'd like to replace original resistors with some better ones. The similar resistors' upgrade was made earlier in my 3010S2 preamp (the original resistors were replaced with the PRP9372) and showed pretty good results.
Now, considering the power amp, I've faced some questions related to the resistors in the emitter circuits and the output RC snubber circuit.
Please see the diagram of the amp output stage (one channel) attached herein; the emitter resistors (0.22R 5W 5%) are colored red and output snubber resistor (4.7R 2W 1%) is colored orange.
So I have the three questions which I hope you can help to answer:
1. Is there any audible contribution to the sound due to output snubber resistor quality? Well, it's connected across the speaker input so it seems its quality may affect sound.
2. It seems like the original snubber resistor is of carbon or carbon film type (please see the photo). Is it worth to replace it with Shinkoh tantalum?
3. Would you please help me with the original resistors identification (Manufacturer/Brand, type). Both emitter and snubber resistors (please see the photo). Mostly, I concerned about the quality level of the original resistors. The types seem to be: wire wound for the emitter resistors and carbon/carbon film for the snubber resistor. But I am not sure.
Your help is really appreciated, thanks!
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Topic - Resistors in Exposure 3010S2 power stereoamp - Lexy 09:03:39 11/18/15 (0)
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