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Looking for a Philips Woofer for the K12 Chassis  

 
PaulGoggo1
(@paulgoggo1)
Trusted V-Ratter Registered

Hello

I recently acquired a Philips Goya 965 from Germany (Philips K12 Chassis). The bass speaker rubber surround has completely rotted away.

Has anyone got one of these? I think they were used in the KT4 chassis sets. Impedance is 12 Ohms.

All costs met.

Picture attached.

Philips Speaker K12
Philips Speaker 2 K12

Thanks Paul G

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Posted : 07/02/2020 12:15 pm
Nuvistor
(@nuvistor)
Famed V-Ratter Registered

If a speaker is not available, would it be possible to use one of the HiFi speaker suspension repair kits? This type of idea.

https://www.speakerworks.com/speaker-repair-kits-s/65.htm

 

 

 

Frank

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Posted : 07/02/2020 3:06 pm
PaulGoggo1
(@paulgoggo1)
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@nuvistor

Hello Frank

yes it looks like a possibility. They are based in the USA, but will email them to see if they are willing to supply.

Thanks

paul

 

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Posted : 11/02/2020 7:06 pm
Nuvistor
(@nuvistor)
Famed V-Ratter Registered

I think there are similar one in Europe, that was just the first web site I came across, if they cannot help perhaps a new search.

 

Frank

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Posted : 11/02/2020 7:44 pm
acj1980
(@acj1980)
Active V-Ratter Registered
Posted by: @paulgoggo1

Hello

I recently acquired a Philips Goya 965 from Germany (Philips K12 Chassis). The bass speaker rubber surround has completely rotted away.

Has anyone got one of these? I think they were used in the KT4 chassis sets. Impedance is 12 Ohms.

Hi Paul, you can without trouble use a similar size from a small subwoofer, i did it with another K12, the sound was great

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Posted : 11/02/2020 9:21 pm
sideband
(@sideband)
Famed V-Ratter Moderator
Posted by: @nuvistor

If a speaker is not available, would it be possible to use one of the HiFi speaker suspension repair kits? This type of idea.

https://www.speakerworks.com/speaker-repair-kits-s/65.htm

I already suggested this over on UKVRRR. Speakerworks are brilliant and not expensive considering the shipping cost as well. They sell surrounds of all sizes and should have one to fit....and it's so easy to do with just a little care. I did my Hi Fi bass speakers some 17 years ago and they are still like new.

 

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Posted : 12/02/2020 8:45 am
Nuvistor liked
PaulGoggo1
(@paulgoggo1)
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@acj1980 That's interesting, what woofer did you use?

 

 

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Posted : 12/02/2020 11:55 am
Marconi_MPT4
(@marconi_mpt4)
Reputable V-Ratter Registered

Replacing the surround is the best way to go if at all possible.

Musing at alternatives, since modern 4" dual cone drivers are typically 4/8Ω these would not match a TDA2610 used in the K12 chassis. According to the data sheet this device is specified to work with 15Ω loads. Low impedance speakers would complicate matters and require an impedance matching transformer. Original speaker is an enclosed magnetic field type and all modern replacements appear to be open field which could interfere and lead to CRT purity / convergence errors.

Information from the Philips/Mullard data sheet, part number AD4050 series is defined as:
AD = Philips/Mullard Audio Driver
40 = 4" round
500 = Magnet type, enclosed field sinter-pot (custom)
M = Dual cone
15 = Impedance 15Ω, DC resistance 12.7Ω

Resonant frequency = 60Hz
Power rating = 8W

In spite of all the foregoing, might be worth looking at this.... https://cpc.farnell.com/visaton

Rich

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Posted : 12/02/2020 2:31 pm
sideband
(@sideband)
Famed V-Ratter Moderator

You'll still need to match the speaker to the chip....it won't like an 8 ohm speaker. It's more faffing about than replacing the surround!

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Posted : 12/02/2020 8:43 pm
Cathovisor
(@cathovisor)
Illustrious V-Ratter Registered

A bit closer to home, http://www.wembleyloudspeaker.com/page-products-repair.shtml

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Posted : 12/02/2020 8:58 pm
acj1980
(@acj1980)
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@paulgoggo1

I'm sorry, its very long time ago I did it, but as I remember it was from a cheaper subwoofer for PC’s.

 

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Posted : 12/02/2020 9:25 pm
Alastair
(@alastair)
Reputable V-Ratter Registered

Here you go.....  ** E-bay Link removed **

Mod Note: please see rule #6 here. You should pm Paul the link. 👍 

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Posted : 12/02/2020 10:51 pm
PaulGoggo1
(@paulgoggo1)
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@alastair

Hi Alastair

 if you could PM me the link, that would be great.

I did find a company : Speaker Repairs.co.uk who can fix this speaker.

so a couple of options to consider.

Thanks  Paul

 

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Posted : 13/02/2020 7:18 am
PaulGoggo1
(@paulgoggo1)
Trusted V-Ratter Registered

@marconi_mpt4

Hi Rich

Looks good except for a large unshielded magnet and its 8 Ohms, looks identical otherwise.

Thanks for the tip.

Cheers

paul

 

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Posted : 13/02/2020 7:21 am
Alastair
(@alastair)
Reputable V-Ratter Registered

On that place, I just searched, 4" speaker surround.....

They are so dirt cheap- gotta be worth a shot....

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Posted : 13/02/2020 10:36 pm