Bandmaster output ohm?

[cream123]

I'm thinking about picking up a blackface bandmaster and I need to know the ohm rating for the two speaker jacks. Ones labeled extension and ones labeled something like "output jack" or something like that.

 

[cream123]

Re: Bandmaster output ohm?

I can't remember the year BTW. In know it's later in the production years.

 

[STRATDELUXER97]

Re: Bandmaster output ohm?

I'm thinking about picking up a blackface bandmaster and I need to know the ohm rating for the two speaker jacks. Ones labeled extension and ones labeled something like "output jack" or something like that.

Safe to say you're good to go if you shoot for 8 ohms and 4 ohms max low impedence....That's pretty standard for most Fender stuff except the 2 ohm 4x10 stuff(Super Reverb,Tweed Bassman etc..)

Most 2 speaker combo Fender amps are 4 ohm total load with 2 8 ohm speakers wired in parallel...This combination gives you the 4 ohms....

1 of your jacks is your speaker jack and the second is your "extension" jack for a second cabinet.

 

[cream123]

Re: Bandmaster output ohm?

Thanks.

 

[LJ King]

Re: Bandmaster output ohm?

Safe to say you're good to go if you shoot for 8 ohms and 4 ohms max low impedence....That's pretty standard for most Fender stuff except the 2 ohm 4x10 stuff(Super Reverb,Tweed Bassman etc..)

Most 2 speaker combo Fender amps are 4 ohm total load with 2 8 ohm speakers wired in parallel...This combination gives you the 4 ohms....

1 of your jacks is your speaker jack and the second is your "extension" jack for a second cabinet.

+ 0.5

Bandmasters and most 2 speaker Fender amps will easily operate down to 2 ohms even though their standard speaker configuration - 2x8ohm speakers wired in parallel gives 4 ohms.

The extension speaker jack is in parallel with the output jack. This is because tube amps will take a higher load (i.e. lower impedance) much easier than they will take a lighter load (i.e. higher impedance).

For tube amps with fixed output impedances such as the Bandmaster... I would rather run a 4 ohm output into a 2 ohm load before I would run it into an 8 or 16 ohm load.

The opposite would be true for solid state amps.

 

[Farkus]

Re: Bandmaster output ohm?

I have to admit ignorace here. I've always wondered about plugging into the extension jack...if I do that, what ohm cabs should I use to get to the magic 4 ohms...

 

[STRATDELUXER97]

Re: Bandmaster output ohm?

+ 0.5

Bandmasters and most 2 speaker Fender amps will easily operate down to 2 ohms even though their standard speaker configuration - 2x8ohm speakers wired in parallel gives 4 ohms.

The extension speaker jack is in parallel with the output jack. This is because tube amps will take a higher load (i.e. lower impedance) much easier than they will take a lighter load (i.e. higher impedance).

For tube amps with fixed output impedances such as the Bandmaster... I would rather run a 4 ohm output into a 2 ohm load before I would run it into an 8 or 16 ohm load.

The opposite would be true for solid state amps.

Depending on how beefy the output transformer is though,I wouldn't recommend pushing a small Pro Reverb,Deluxe,etc..transformer down to 2 ohms! There's a reason that the Super Reverb used a beefier output transformer with more iron and was made to handle the lower 2 ohm load.It might work for a little while but it's pushing it!

 

[Low_fidelity2100]

Re: Bandmaster output ohm?

1 of your jacks is your speaker jack and the second is your "extension" jack for a second cabinet.

Also I'll add, I've been told repeatedly To NEVER plug a cab into the extension Jack, Unless you've also got something in the Main jack already. I'm not sure if thats actually true, or if it makes any difference. But Just to be safe I've never plugged anything into the ext. jack on any amp I've ever had, Unless there was something in the main jack already.

 

[Low_fidelity2100]

Re: Bandmaster output ohm?

Oh Also its a 4Ohm load apperently.....

http://www.ampwares.com/ffg/bandmaster_bf.html

Anytime I have questions about fender amps, Ampwares is the first place I always check. The "fender amp field guide" should be in your bookmarks, if it isn't already. Theres helpful info about damn near every fender tube amp

Http://www.ampwares.com/ffg/

 

[Jeff Seal]

Re: Bandmaster output ohm?

Also I'll add, I've been told repeatedly To NEVER plug a cab into the extension Jack, Unless you've also got something in the Main jack already. I'm not sure if thats actually true, or if it makes any difference. But Just to be safe I've never plugged anything into the ext. jack on any amp I've ever had, Unless there was something in the main jack already.

That is more true than you'll ever know.... Never, ever use an older Fender amp unless something is plugged into the spkr out jack, the ext. spkr jack can only be used in conjunction with the spkr out....

As far as ohms, don't even worry about it.. Fender trannies will go down to 1.8 ohms, but I wouldn't suggest it! 4 ohms is safe for most older Fender's

JS