Alamo Challenger Speaker Impedance Question

[Vince in KC]

Hi,
Thanks for all the info and interesting topics...... I've been reading your posts for the last month or so. Reading all of the amp build post has got me thinking I should pull my old Alamo amp out of the closet and replace the blown speaker.

Here's where I run aground, the speaker isn't marked and researching my Alamo Model 2562 never gets me very far. As far as I can tell from the tubes, this amp is some form of a Fender Champ, 6v6gta, 12ax7, 5y3gt. The output transformer has two lugs one marked 8 and the other marked 16. The 8 inch speaker is connected to the lug marked 16. I'm guessing this means the speaker is 16 ohm? Can anyone confirm the correct speaker for this amp? Or is there a way to figure out the correct impedance value?

Thanks again,
Vince

[Jaybird]

I lieve that if you use a multimeter, you can determine the ohm rating of your speaker. Simply put the +probe on the + terminal of the speaker and the - probe on the - terminal of the speaker.

[Vince in KC]

Thanks, Jaybird....... I'll give it a try. If nothing else, this will be a learning experience. What kind of amp do you prefer?

[mak90]

Hello my 1965 Alamo Challenger uses a 8ohm speaker 6v6 5y3 and 12ax7.

[xStonr]

My '67 Alamo Embassy with this tube layout, 6AV6 12AX7A 6V6 5Y3GT, uses an 8 ohm speaker.