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FDP Forum / Miscellaneous and Non-Fender Topics / quick question about line in

Greg

Highland CA

Close to Corona
Jul 11th, 2012 12:57 PM Edit Profile Print Topic Search Topic
I have a Bassman 25 with an aux in and an effects send and return.

Can I plug in a line out from another amp into either of the two ports mentioned above?

Thanks!

SonicBlue

Sunbury-on-Thames

Jul 11th, 2012 01:51 PM Edit Profile Print Topic Search Topic
You can, though Fender say use the Effects Loop for connecting amps together
Bassman 25 User Manual

Steve Dallman
Contributing Member
*****

Merrill, Wisconsin

Ain't turned 60, but I got my blinker on
Jul 11th, 2012 02:33 PM Edit Profile Print Topic Search Topic
A line out from another amp can be plugged into the effects return, but it will cut off the signal from the Bassman 25 preamp. The other amp will control the power amp from the Bassman 25.

Greg

Highland CA

Close to Corona
Jul 11th, 2012 08:30 PM Edit Profile Print Topic Search Topic
Thanks, tried the effects return and it works!

You're right about the other amp being in full control. NONE of the knobs on the Bassman 25 do anything. It's almost as if the Bassman 25 essentially becomes an extension speaker.

Which is exactly what I want since I'm using an acoustic guitar type amp and want to use its reverb and tone settings. Just want to use the Bassman to add more "spread".

reverendrob
FDP Data Goon
Moderator

Hero, hero

you have done so well...
Jul 11th, 2012 09:59 PM Edit Profile Print Topic Search Topic
Yea, just be sure you NEVER use a speaker out instead of the line.

Bad things will happen.

Greg

Highland CA

Close to Corona
Jul 12th, 2012 08:26 AM Edit Profile Print Topic Search Topic
I did know that much (LOL)! My acoustic guitar amps only have line outs anyway.

Thanks!

Tyrone Shuz

USA

I'm all in!
Jul 12th, 2012 11:58 AM Edit Profile Print Topic Search Topic
Some amps have knobs like presence that are in the power amp section, or even a master volume, and sometimes reverb works.

But you are using your Bassman 25 as a "slave" while the amp you plug into it is the "master".

You mentioned the Bassman is now an extension speaker. More correctly, it is the power amp and speaker. That Bassman 25 is 25w, so while it is the "slave" it is also the master of the overall volume. If you had a 100w Marshall w/a line out, you are only sending its preamp to the Fender's 25w power amp. So you can convert a very powerful amp into a less powerful one if you so desire.

Now be careful doing this, because old school amps like Marshalls must be run with a load at all times. MAYBE some of the newer ones will be safe to run as just a preamp if you don't plug a speaker in, but that's not typical for any guitar amp, especially a vintage-style amp.

ALL vintage amps, Marshalls, Fenders, etc, must be run with a load even in a master/slave situation. If the amp is on, it needs to send output to the speaker outs, so you must have either a speaker or a dummy load hooked up.

Many modern makers will allow the amp to be run as just a preamp, but this is a very recent trend, so make sure your amp will allow this.

Some amps are built in a modular fashion so that if nothing is plugged into the speaker outs, only the preamp works, and you can use it just as a preamp to do exactly what you're doing.

But most amps require you to run that amp too, so you'll be stereo if you like. You could send your amp's line out to the bassman, but the original amp also has to be on. A stereo effect will send one out back into the original amp, and the other into the bassman. Separate the speaker sources a bit, and effects like chorus, and ping-pong delay get really cool.

If you desire to run your amp into the bassman and ONLY hear that speaker, MAKE SURE it's ok to run your amp that way, otherwise, you'll have to run a stereo rig as described.

FDP Forum / Miscellaneous and Non-Fender Topics / quick question about line in

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