Do old speakers need new capacitors?

Wayne A. Pflughaupt

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257
Location
Corpus Christi, TX
My AV System  
Preamp, Processor or Receiver
Yamaha RX-Z9 A/V Receiver
Main Amp
Ramsa WP-9440 Stereo Amplifier (for subwoofers)
Additional Amp
TIVO Premier TCD746320 (OTA TV tuner)
Other Amp
Nakamichi MB-1 Seven-Disc CD Changer
Universal / Blu-ray / CD Player
Pioneer BDP-23FD Blu Ray Player
Front Speakers
TASCAM SS-R05 Media Player/Recorder
Center Channel Speaker
LRS Electronics Human 61 Speakers (all channels)
Surround Speakers
Realistic Minimus 7 (front EFX speakers)
Surround Back Speakers
Custom Built-in Subwoofer with Dual Shiva 12"
Front Height Speakers
Yamaha YDP2006 Digital Parametric EQ (front mains)
Rear Height Speakers
Yamaha YDP2006 Digital Parametric EQ (subs)
Subwoofers
Adcom ACE-515 (for power management)
Other Speakers or Equipment
Chase Technologies RLC-1 (remote control for subs)
Video Display Device
Yamaha DT-2 (digital clock display)
Screen
Audio Control R130 Real Time Analyzer
Remote Control
Stock Yamaha Remote
Other Equipment
Pioneer PDP-5070HD Plasma TV
Do old speakers need new capacitors?

I know older amplifiers need to have the capacitors replaced to maintain optimal performance. But what about old speakers? Do they need to be re-capped too?

Regards,
Wayne A. Pflughaupt
 

ddude003

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Aug 13, 2017
Messages
265
Location
Somewhere Northeast of Kansas City Missouri
My AV System  
Preamp, Processor or Receiver
PrimaLuna Dialogue Premium TubePre (2 channel+sub)
Main Amp
McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Universal / Blu-ray / CD Player
LG BlueRay
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Sony TV KDL50W700B
Remote Control
Audirvana Plus, Tidal HiFi MQA and DSD128...
Other Equipment
Throw rug, saddle blankets and base traps...
Last edited:

Wayne A. Pflughaupt

Moderator
Staff member
Thread Starter
Joined
May 21, 2017
Messages
257
Location
Corpus Christi, TX
My AV System  
Preamp, Processor or Receiver
Yamaha RX-Z9 A/V Receiver
Main Amp
Ramsa WP-9440 Stereo Amplifier (for subwoofers)
Additional Amp
TIVO Premier TCD746320 (OTA TV tuner)
Other Amp
Nakamichi MB-1 Seven-Disc CD Changer
Universal / Blu-ray / CD Player
Pioneer BDP-23FD Blu Ray Player
Front Speakers
TASCAM SS-R05 Media Player/Recorder
Center Channel Speaker
LRS Electronics Human 61 Speakers (all channels)
Surround Speakers
Realistic Minimus 7 (front EFX speakers)
Surround Back Speakers
Custom Built-in Subwoofer with Dual Shiva 12"
Front Height Speakers
Yamaha YDP2006 Digital Parametric EQ (front mains)
Rear Height Speakers
Yamaha YDP2006 Digital Parametric EQ (subs)
Subwoofers
Adcom ACE-515 (for power management)
Other Speakers or Equipment
Chase Technologies RLC-1 (remote control for subs)
Video Display Device
Yamaha DT-2 (digital clock display)
Screen
Audio Control R130 Real Time Analyzer
Remote Control
Stock Yamaha Remote
Other Equipment
Pioneer PDP-5070HD Plasma TV
Very interesting, thanks for the info. Do you happen to have any idea of what the audible manifestation would be, if any?

Regards,
Wayne
 

ddude003

Senior Member
Joined
Aug 13, 2017
Messages
265
Location
Somewhere Northeast of Kansas City Missouri
My AV System  
Preamp, Processor or Receiver
PrimaLuna Dialogue Premium TubePre (2 channel+sub)
Main Amp
McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Universal / Blu-ray / CD Player
LG BlueRay
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Sony TV KDL50W700B
Remote Control
Audirvana Plus, Tidal HiFi MQA and DSD128...
Other Equipment
Throw rug, saddle blankets and base traps...
Very interesting, thanks for the info. Do you happen to have any idea of what the audible manifestation would be, if any?

Regards,
Wayne
Your welcome... Sound deterioration, reduced dynamics, frequency drift... Eventually the crossovers may not stay within driver specs and cause damage to your drivers...
 

Kerry Armes

Member
Joined
Jan 10, 2019
Messages
24
Do old speakers need new capacitors?

I know older amplifiers need to have the capacitors replaced to maintain optimal performance. But what about old speakers? Do they need to be re-capped too?

Regards,
Wayne A. Pflughaupt
It's really only electrolytic capacitors that would ever need to be replaced. Poly caps don't suffer from the same problems. The only real way for a poly cap to go bad is to send it way too much power. They can be out of tolerance from the manufacturer, but they won't really drift from that over time.

Failing or failed caps will lead to the values being off from spec. This could be the actual capacitance or the ESR, both of which could cause frequency response issues since the crossover will no longer have the values it was designed to have.

If a capacitor measured to spec, age won't make it sound bad on its own.
 
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