GRJ, is this the ERR speaker? It's about 1.5" but doesn't appear to come with the baffle....couldn't find it on the ERR site.
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Stan, if it's not the ERR speaker, it's certainly very close. 
I thought they sold it with the baffle, I'd ask them as I was sure that was a package.
Dear John
I also looked and could not find it did they reply back to you?
I've never ordered the speakers, I just take them out of the RS Commander kits I use.
Hmm, perhaps they don't sell the baffle a la carte like the speaker.
I know lot of the guys get good results with the "Fat Boy" speakers but it seems a bit hard on the wallet at $10 especially if you don't get the baffle. In any event, here's one for less than $1 each (free shipping) when you buy 4. It's just under 1.5" and of course you'd need to make your own baffle; but as I noted earlier you should be able to find something around the house to do so. I have not purchased these myself so I guess I'm simply suggesting it ought to be possible to find alternatives.
I could post eBay auction numbers but I think auction numbers turn into a pumpkins after a few months and this thread will probably go on beyond that! So the wording in the pic should searching on eBay next year or whenever.
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FWIW Stan, I buy lots of speakers from similar ads. I have that exact same looking speaker in the 2" size, they actually sound really good with a homemade baffle. I use spray can lids, but almost anything similar will work.
Dear Gentlemen
Thank you for the reply. I ordered some speaker and they have arrived. I will use the 2" paint can lids as a baffle and see how that works out.
Hi John
It has been a little less than month that I have seen any updates how is your project coming along?
Still in the pipeline. I've been pulled away on other projects, so it's moving slowly right now.
Hi
News flash I just got a chance to put some items together. Thank you Stan and John for all your help and guidance. I changed the Hotwheel Knight Rider to an Aoshima Skynet Knight Rider K.A.R.R. 1/43 Diecast Car. The reason why I changed the setup was installing LED into the Hotwheel car required a lot of modification and use of equipment that I did not have.
Dear GRJ and Stan2004
THANK YOU! Knight Rider is completed.
https://ogrforum.com/t...ht-rider-1#lastReply
John you are right that Chinese parts take up a lot of space but without them this project would have never been built by me. Stan thanks without you guidance on the Chinese electronic parts I would have been completely lost. This one man dream would have been a dream and never built but with your help it was built and completed today.
