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Thread: Possible issue with some Wharfedale W4 Loudspeakers

  1. #1
    Join Date: Mar 2012

    Location: Gloucestershire

    Posts: 3,951
    I'm Paul.

    Default Possible issue with some Wharfedale W4 Loudspeakers

    Please see my news blog for detailed information,

    http://theartofsound.net/forum/showt...982#post745982

    Basically, rare as these speakers are, some left the Wharfedale factory incorrectly wired and using the wrong value for components. If any of you out there use these speakers or know anyone lucky enough to have a pair, please have them contact me and I will provide FOC the correct circuit and circuit values (for those with the 15 Ohm drive units) in order for you to both check and amend circuit values as appropriate.

    Issues include L-pad switches incorrectly wired, HF circuit incorrectly wired, wrong values for HF capacitors, wrong LF inductors.

    In all the years I've been doing this, I have never come across a more incompetently and badly wired up loudspeaker. Please note, this could well apply to other similar vintage loudspeakers so best check if in doubt.

  2. #2
    Join Date: Jan 2008

    Location: Forest of Dean, Glos & Cambrian mountains, Wales

    Posts: 9,100
    I'm Jerry.

    Default

    Do you think they came from the factory like this, Paul, or have botched repair jobs been done on them over the years?
    Jerry

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  3. #3
    Join Date: Mar 2012

    Location: Gloucestershire

    Posts: 3,951
    I'm Paul.

    Default

    Quote Originally Posted by jandl100 View Post
    Do you think they came from the factory like this, Paul, or have botched repair jobs been done on them over the years?
    Rather surprisingly Jerry, I know that this particular pair came straight from the factory like this. The present owner bought them new some 52 years ago and has owned them ever since. He has never had them apart. He told me that he bought a pair new from a dealer and one had a damaged veneer so the dealer replaced it with another from the factory, albeit with a slightly different rear panel. It wasn't unusual to buy cabinets singly back then for mono use and sometimes there were variations in cabinets and rear panels with these (some had a stereo jack input as well as binding posts).

    Upon checking the crossover, I found one had completely the wrong inductor for the bass which as a consequence had been running full range. The variable potentiometer L-pads were all incorrectly wired so that in effect they didn't work at all and the tweeters weren't connected to the positive input rail at all!

    The owner complained that they sounded a bit dull and muddled, that the switch position made no difference to sounds and that HF wasn't great but that he valued them for a lively midrange! This was how he had been listening for 52 years. I am repairing them FOC for my time for him. This doesn't make up for the fact he's not benefited from hearing them as Gilbert Briggs intended but in the circumstances, the elderly gent in question deserves to have them back sounding as they ought to at minimal cost to himself.

  4. #4
    Join Date: Jan 2008

    Location: Forest of Dean, Glos & Cambrian mountains, Wales

    Posts: 9,100
    I'm Jerry.

    Default

    Amazing. And depressing.

    Be interesting to hear the owner's reaction when he gets them back.
    Jerry

    Spotify Premium streaming, Wadia 151 PowerDAC, MBL 116F.
    or
    >> Currently >>Spotify Premium streaming, Cambridge Audio 851D DAC/pre, Pass Labs X150 power amp, MBL 116F.
    or
    Spotify Premium streaming, Cambridge Audio 851D DAC/pre, LA Audio A-30 el84 integrated amp, MBL 116F.

  5. #5
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 18,137
    I'm Martin.

    Default

    Bit gutting to find out you've not been getting the best from your speakers for 52 years!

    I think there's a few on Audiokarma who have W4s.
    Martin



    Current Lash Up:

    Sony X505ES CD Player * NVA P90SA passive pre / NVA A30 Power amp * JM Lab Electra 926 loudspeakers *



    "I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." - Hunter S Thompson

  6. #6
    Join Date: Mar 2012

    Location: Gloucestershire

    Posts: 3,951
    I'm Paul.

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    Quote Originally Posted by Macca View Post
    Bit gutting to find out you've not been getting the best from your speakers for 52 years!

    I think there's a few on Audiokarma who have W4s.
    The gent in question wasn't at all surprised to learn what he did Martin as he always suspected that something was not quite right. If any W4 owners on Audiokarma want to contact me via my website or via an AoS or PFM member known to them, I'll point them in the right direction if they're at all concerned.

  7. #7
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 37,911
    I'm Grant.

    Default

    Whoever built them should be fired

    Nice of you to do it foc Paul
    Regards,
    Grant ....

    I've said it before and I'll say it again: democracy simply-doesn't-work
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  8. #8
    Join Date: Apr 2012

    Location: Southall, West London

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    I'm Geoff.

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    That's a nice and generous resolution to the chap's problem.
    Mr. Tact!

    Main system: MMs/ADCs/Low output MC's/One rare Japanese SUT/One scarce British phono stage/various tonearms/hefty Japanese DD TT and hefty Japanese BD TT and small British BD TT. 4 CD players/2 jitter buster/2 DACs/Valve buffer. TVC stepped attenuator or valve pre-amp or solid state pre-amp. Current dumping power-amp or either of two Class A SS power-amp or Class A EL34 valve monos or big Japanese (part Class A) integrated. Big dual concentric speakers/Smaller dual concentric speakers/Two way British compacts and full range speakers, amongst others. And too much more to list!

  9. #9
    Join Date: Aug 2009

    Location: Staffordshire, England

    Posts: 18,137
    I'm Martin.

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    Quote Originally Posted by Reffc View Post
    The gent in question wasn't at all surprised to learn what he did Martin as he always suspected that something was not quite right. If any W4 owners on Audiokarma want to contact me via my website or via an AoS or PFM member known to them, I'll point them in the right direction if they're at all concerned.
    I'll mention it next time I am on there, Paul.
    Martin



    Current Lash Up:

    Sony X505ES CD Player * NVA P90SA passive pre / NVA A30 Power amp * JM Lab Electra 926 loudspeakers *



    "I hate to advocate drugs, alcohol, violence, or insanity to anyone, but they've always worked for me." - Hunter S Thompson

  10. #10
    Join Date: Sep 2009

    Location: Bournemouth

    Posts: 4,091
    I'm Dan.

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    Guys been offered a pair of these local for a sensible price i may have to wait to payday for they seen very good value to add to the collection...

    Watch this space...
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