Recommend Vifa P22WP-01 8" woofer Replacements - diyAudio
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Old 18th March 2013, 04:00 PM   #1
jazzbee is offline jazzbee  United Kingdom
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Default Recommend Vifa P22WP-01 8" woofer Replacements

Hi All,

I am seeking replacement woofers for my Mackie HR824 studio monitors. The originals are Vifa P22WP-01 8" woofers and are no longer available to buy so I would like your advice on any woofers that may have the same or very similar specs.

I am not familiar with the below technical specs and their meaning so the below information will probably make sense to a lot of you.

Below are the speaker specs of the woofers:

TS: Fs 29.5Hz,
QMS 2.20,
QES 0.31,
QTS 0.27,
Vas 77 l,
Re 5.8 ohms,
Sd 235 cm2,
Rm 2.5,
Bl 10.2,
Md 29.5 g,
Xmax 6 mm



Any assistance would be greatly appreciated as these are my most prized posessions and I would like to continue using them for many many more years
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Old 18th March 2013, 04:58 PM   #2
system7 is offline system7  United Kingdom
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This seems to be a closed box design around 40 litres, actively driven by built in amps and active crossover.

I'm getting the feeling the Vifa P22WP-01 is an 8 ohm polycone around 220mm diameter.

Do either of these polycones look promising?

Scanspeak/Vifa P21WO-20-08
http://www.madisoundspeakerstore.com...fer-poly-cone/
Vifa P21WO-20-08

Seas U22REX/P-SL
The Madisound Speaker Store

Do they fit? THE SEAS looks more likely with 6 holes on PCD 209.5...

Let's hope woofers are woofers. All the same...
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Good Night, and Good Luck. Best regards from Steve in Portsmouth, UK.

Last edited by system7; 18th March 2013 at 05:08 PM. Reason: Added link with frequency response for Scanspeak.
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Old 14th April 2013, 05:45 PM   #3
jazzbee is offline jazzbee  United Kingdom
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Location: UK
Thanks for the reply System7

The vifa woofers look similar apart from the number of mounting holes but the Seas woofer looks completely different and dare I say would make the monitors look rather 'cheesy' but I am not sure if those specs are suitable so will do a bit more research as matching the woofer specs will be the most important aspect of this woofer replacement.

I will email the guys at vifa and see if they can advise me on a replacement woofer as a lot of Mackie owners are have having no luck sourcing replacement woofers which is a total shame as the HR824 MK1 are damn fine studio monitors.

I know a lot of DIY'ers used to use these woofers in their own builds according to other forums but tracking down some random dude in another continent with 3 or 4 of these spare woofers in his storage room would be a miracle but it seems that may be the only way to get these
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Old 15th April 2013, 12:36 PM   #4
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i thought its a 4 ohm. But if you have the specs from the driver themselves i stand corrected.
if it is 8 ohm i would go for the Seas as it should slot in unless the p22 is only a 215mm like the P21 vifa is.

Last edited by chefsinc; 15th April 2013 at 12:44 PM.
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Old 15th April 2013, 02:50 PM   #5
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Hello jazzbee, I have a pair of the Vifa-Mackie 8 in woofers in storage, new and unused, which I don't foresee ever using. I am sure they are 4 ohm though. If you are interested I can dig them out and run the T/S parameters to verify their present quality. The only problem would be the high shipping cost from USA to UK... Dave
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Old 11th August 2013, 01:39 AM   #6
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Default woofer

Leadfinger,

Still have any of those woofers laying around?
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