Quoted from DugFreez:

My Speaker Light Kits should work with any 4" aftermarket speakers on any games the light kits support: All Data East, most Sega and all Stern games from Back to the Future 1990 - Deadpool 2018.
On SPIKE and SPIKE 2 games the aftermarket speakers will need to have their spacer rings removed if they have them attached to the front of them and on SPIKE 2 games the factory speaker plates may need the bars cut out of them (or you can ask about my new SPIKE 2 replacement speaker plates), but if these things are done, there should be room for the upgraded speakers with the Speaker Light Kits (even with the power supply on the right side of the SPIKE games).
The only issue with aftermarket speakers that I have seen with my Speaker Light Kits is if you want to do the new "Yo Dawg" Speaker Light Kit in a Speaker Light Kit setup on SPIKE 2 games (SEE ATTACHMENTS)....and this can NOT be done with upgraded speakers unless the speaker's magnet is the same size or smaller than the factory speaker.
All of this information pertains to my Speaker Light Kits and may not be true for other knock off speaker light kits. I have also only tested with Flipper Fidelity speakers and Michael Pupo has always stayed in touch with me on how my light kits work with his speakers. He also offers small support touches like offering his speakers without the spacer ring attached if a buyer is planning on using a Speaker Light Kit with them. Having said that...after 5+ years and 1000s sold I have never had a reported issue of a speaker not fitting with one of my Speaker Light Kits, be it factory, FF, PP or any other aftermarket 4" speaker.
Doug (www.SpeakerLightKits.com)[quoted image][quoted image]

Quoted from DugFreez:

I'm not sure how deep the spacer rings are that are on PP speakers. On FF speakers they are 5/8". My SPIKE 2 Speaker Light Kit adds 1/2" to the mounting depth on the SPIKE 2 speaker panel. Having said that...there is NOT enough room to mount my SPIKE 2 Speaker Light Kit and a PP or FF speaker that has the spacer rings still attached to the front of them. IF the spacer ring is taken off...you will then need to cut out the bars that are over the holes in the factory speaker plates or buy my Replacement SPIKE 2 Speaker Plates. These Replacement SPIKE 2 Speaker Plates have the holes open so the aftermarket speaker's tweeters can go through them and they also center up the speaker hole in the honeycomb grill area of the speaker panel to give a better look. In either of these cases (cutting out the bars or buying my replacement plates) the aftermarket speakers will fit fine and actually have an extra 1/8" of clearance between the back of the speaker and the power supply than what they originally had with the spacer rings attached and no Speaker Light Kit.
As for the "Yo Dawg" setup....the additional "inner" Speaker Light adds 5/8" of depth....so it is a no go with FF or PP speakers (even if the spacer rings are removed). So that is limited to factory speakers only or at the very least replacement speakers that are the same size or smaller than the factory speakers in rear mounting depth. The "Yo Dawg" will also not work in Iron Maiden LE or Deadpool LE as they use 5 1/4" speakers instead of the normal 4" speakers.