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Thread: Small Pop in speakers when amp powered up

  1. #1
    Join Date: Dec 2018

    Location: Cornwall

    Posts: 157
    I'm Dave.

    Default Small Pop in speakers when amp powered up

    I thought I'd just run this by people here, when powering up my new Rega Elex-R I hear a tiny pop in both speakers, reading on the internet it appears to be "A Rega Thing"

    Nothings changed in the system, just removed my Yamaha A-S500 and put the Rega back in its place, pressed the power on and a tiny pop is heard through both speakers, Is this a Rega only quirk or does anyone else have similar with other amps.

    All the connection are tight and secure if the speakers are disconnected no pop, so it appears to be a pickup of the power being switched, silent during playback and powering down.

    The Yamaha was silent powering up and no pop in the speakers.

    Some are saying turn the amp on last?
    Amp Rega Elex-R
    CDP Denon DCD 520
    Tuner Teac T-R650 Dab/FM
    Music Player Pioneer N30 Network Player
    DAC Beresford SEG
    PSU Linear 15v/Baresford Dorado
    Speakers Dali Zensor 3s
    Speaker Cable Current is Rega FSC Quattro , Fisual S-Flex Studio 2.5mm / Ortofon SPK 100
    Stands Audio Visual Twin Pillar
    Interconnects Van Damme Silver Plated OFC Pro Classic XKE CDP/Tuner & Solid Silver Cyro 99.99% Pure, Dac To Amp
    Headphones AKG K550 mk3
    SUB BK XLS 200

  2. #2
    Join Date: Sep 2013

    Location: North Island New Zealand

    Posts: 1,403
    I'm Chris.

    Default

    It is quite normal for this to occur in the majority of amplifiers . the reason is the coupling between the power supply capacitors
    and ground which is at the same point as the loudspeaker ground. The capacitor takes a short moment to charge up
    and it is this charging up that you are very briefly hearing.

    If no noise is required at turn on the amplifier manufacturer can deploy a delay relay for a short duration, which then couples
    the loudspeaker, allowing in the process the amplifier to start before attaching the loudspeaker load.

  3. #3
    Join Date: Dec 2018

    Location: Cornwall

    Posts: 157
    I'm Dave.

    Default

    AhHa I see thanks for that, the Yamaha obviously had a relay as no small pop upon powering up, I have heard it before but forgot what item did it some years back
    Amp Rega Elex-R
    CDP Denon DCD 520
    Tuner Teac T-R650 Dab/FM
    Music Player Pioneer N30 Network Player
    DAC Beresford SEG
    PSU Linear 15v/Baresford Dorado
    Speakers Dali Zensor 3s
    Speaker Cable Current is Rega FSC Quattro , Fisual S-Flex Studio 2.5mm / Ortofon SPK 100
    Stands Audio Visual Twin Pillar
    Interconnects Van Damme Silver Plated OFC Pro Classic XKE CDP/Tuner & Solid Silver Cyro 99.99% Pure, Dac To Amp
    Headphones AKG K550 mk3
    SUB BK XLS 200

  4. #4
    Join Date: Mar 2017

    Location: Seaford UK

    Posts: 1,039
    I'm Dennis.

    Default

    As Chris says, dependant on the nature of the amplifier cct.

    Very often now a 'soft' switch on is designed in to avoid this 'pumping up' of the power supply

  5. #5
    Join Date: Apr 2009

    Location: Near Saffron Walden, Essex

    Posts: 6,505
    I'm Dave.

    Default

    Perfectly normal and nothing to worry about.

  6. #6
    Join Date: Nov 2008

    Location: Valley of the Hazels

    Posts: 8,933
    I'm AMusicFanNotAnAudiophile.

    Default

    My NAD C320BEE uses relay switching on power up from standby, and I too get a small pop.
    It's nothing to worry about.
    Chris



    Common sense isn't anymore!

  7. #7
    Join Date: Dec 2018

    Location: Cornwall

    Posts: 157
    I'm Dave.

    Default

    Thanks for the replies thats cleared that up
    Amp Rega Elex-R
    CDP Denon DCD 520
    Tuner Teac T-R650 Dab/FM
    Music Player Pioneer N30 Network Player
    DAC Beresford SEG
    PSU Linear 15v/Baresford Dorado
    Speakers Dali Zensor 3s
    Speaker Cable Current is Rega FSC Quattro , Fisual S-Flex Studio 2.5mm / Ortofon SPK 100
    Stands Audio Visual Twin Pillar
    Interconnects Van Damme Silver Plated OFC Pro Classic XKE CDP/Tuner & Solid Silver Cyro 99.99% Pure, Dac To Amp
    Headphones AKG K550 mk3
    SUB BK XLS 200

  8. #8
    Join Date: Feb 2010

    Location: Bridgend, Wales

    Posts: 158
    I'm James.

    Default

    It's a 'feature' of more purist amplifier diesigns and nothing to worry about. Try owning an Exposure amp sometime - more of a switch-on cannon shot than a small pop
    Nottingham Analogue Spacedeck / Kuzma Stogi S / Benz Micro Ace S L
    Lenco L-75 / Carl Ellis Plinth / Ortofon AS-212 / Ortofon SPU Classic GM E MkII
    Ortofon ST-7 SUT / Croft RIAA

    Cambridge Audio CXU / Theta DS Pro Prime

    Classé Model 30 / Luxman M-383

    Usher Compass X-719


    May contain opinions that others find disturbing.

  9. #9
    Join Date: Jan 2009

    Location: Essex

    Posts: 21,058
    I'm openingabottleofwine.

    Default

    My Quad 405s make a dull thump on switch on. It's not loud and nothing to worry about.

    Conversely my Quad 510s can sometimes make a sharp 'crack' on switching off.
    Barry

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