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Hello, I have a 1978 Ampeg V4B and a Fliptops 27" wide 4x10 closed enclosure (not ported). I was wondering what 10" drivers you would recommend to get the sound as close as I can to 1/2 of an SVT flatback with the old CTS 137's? Ideally I would like to have the cabinet be 4 ohms so I could also...

Hello, I am considering purchasing an Ampeg Flat Back 8x10 speaker for my 71 SVT. How can I date the cabinet? I can’t find this information on the internet. I attached a picture of the serial number tag on the speaker. Can someone guide me to how you can tell by the serial numbers what the...

Hello, I have a 1970 Ampeg Blueline SVT and would like it to be gone through and set to factory specifications. Where do you guys recommend I send it. I dont want to have it done locally, I want it to go to the SVT professionals. Thanks, Steve

Could someone please help me verify these speakers in this Ampeg SVT 810? It is a straightback cabinet. I know you need to remove the speaker and look at the back of it to verify that it is a CTS Alnico with 8 - 32 ohm 10" speakers at 4 ohms. EIA codes 137 71XX, dating the cabinet at 1971 or...