Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: TIMBO on November 25, 2017, 12:20:55 am

Title: Combo Amp and Extention Speaker
Post by: TIMBO on November 25, 2017, 12:20:55 am

Hi guys, I have a combo amp that has two speaker sockets.
One is marked 7.5 ohms "amp speaker" and the other 15ohm "EXT. speaker.
(https://i.imgur.com/dNyLHR1.jpg)
The sockets are connected in parallel.
The combo speaker is 15ohm.
The original OT is stuffed and I have replaced it with an OT that has 4,8 and 16ohm taps.
I don't know what the original OT tap was used.

What tap do I use?? :dontknow:

Title: Re: Combo Amp and Extention Speaker
Post by: sluckey on November 25, 2017, 05:17:32 am

Use the 16Ω tap with that 15Ω speaker.

Title: Re: Combo Amp and Extention Speaker
Post by: TIMBO on November 25, 2017, 02:39:58 pm

 :thumbsup: