DC offset Voltage
3 posters
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DC offset Voltage
May I get some info from all the gurus here?
I understand that it is a safety step to check
the DC offset (in mV at speaker terminals of
amplifier) prior hooking up any speaker system
for any vintage integrated amp and receiver.
However is this applicable to power amplifier?
Stereo and or mono block?
Appreciate any advise and Thanks in advance.
I understand that it is a safety step to check
the DC offset (in mV at speaker terminals of
amplifier) prior hooking up any speaker system
for any vintage integrated amp and receiver.
However is this applicable to power amplifier?
Stereo and or mono block?
Appreciate any advise and Thanks in advance.
peter chan- Frequent Contributor
- Number of posts : 109
Age : 62
Location : Penang, Malaysia
Registration date : 2010-05-11
Re: DC offset Voltage
No guru...
DC offset voltage of anything connected to the speaker is important; regardless power amplifier - stereo or mono block.
DC offset voltage of anything connected to the speaker is important; regardless power amplifier - stereo or mono block.
vt4c- Frequent Contributor
- Number of posts : 149
Age : 54
Location : M'sia
Registration date : 2009-05-09
Re: DC offset Voltage
Thx bro.
peter chan- Frequent Contributor
- Number of posts : 109
Age : 62
Location : Penang, Malaysia
Registration date : 2010-05-11
Re: DC offset Voltage
Good morning all
Is it normal that you get a
DC offset reading which keeps
fluctuating within a range
like +5.0 to + 1.8.
One of my amp gives a steady
reading with no changes.
But there is one with above range readings.
Please advise.
Thx.
Is it normal that you get a
DC offset reading which keeps
fluctuating within a range
like +5.0 to + 1.8.
One of my amp gives a steady
reading with no changes.
But there is one with above range readings.
Please advise.
Thx.
peter chan- Frequent Contributor
- Number of posts : 109
Age : 62
Location : Penang, Malaysia
Registration date : 2010-05-11
Re: DC offset Voltage
Ideally, it should notbe more than few tenths s of mV. For older amps it is possible to reach few hundreds mV. But 5.0 V is too high. Even 1.0V is too high. Please check whether it is V or mV.
Re: DC offset Voltage
Hi STC,
It is in mV,
One of my amp does not give a stable reading,
the reading on my voltmeter keeps fluctuating from +5.0mV
to +1.8mV
Is this normal?
Thx.
It is in mV,
One of my amp does not give a stable reading,
the reading on my voltmeter keeps fluctuating from +5.0mV
to +1.8mV
Is this normal?
Thx.
peter chan- Frequent Contributor
- Number of posts : 109
Age : 62
Location : Penang, Malaysia
Registration date : 2010-05-11
Re: DC offset Voltage
That is very good. Sometimes, it is difficult to get zero due to interference. It also depends on your multimeter. Connect to your speakers and turn it on. If you don't see the cone moves than it should be fine. Anyway, I don't think you will hear a difference even it reads few hundred mV. Usually, the D.C. Protection will kick in unless it malfunctioned.
Re: DC offset Voltage
Hi STC
Thx again.
Thx again.
peter chan- Frequent Contributor
- Number of posts : 109
Age : 62
Location : Penang, Malaysia
Registration date : 2010-05-11
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