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Post subject: What, exactly, is the advantage?
Posted: Tue Jun 30, 2009 3:56 pm
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NOTE: For additional output, link two Bassman 400’s/400H’s by connecting the EFFECTS SEND {J} on one amp to the
EFFECTS RETURN {I} on the second amp. (All controls on the first amp override those on the second amp, except MASTER VOLUME.)


Above, is an excerpt from the Fender Bassman 400 instruction manual. Does this mean that if you do this, you have the equivelent of 700 watts (350 watts per head) of power? If not, what exactly is attained by doing this?


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Posted: Thu Jul 02, 2009 6:36 pm
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The Effects Send output sends the pre-amp output. The "effects return" routes the input signal to the power amp, by-passing the preamp (tone controls are bypassed, too).

So, if you cable the effects send of amp 1 to the effects return of amp 2 you will get the wattage of both amps. Scary, isn't it?


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Posted: Thu Jul 02, 2009 10:08 pm
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Guitarist1983 wrote:
The Effects Send output sends the pre-amp output. The "effects return" routes the input signal to the power amp, by-passing the preamp (tone controls are bypassed, too).

So, if you cable the effects send of amp 1 to the effects return of amp 2 you will get the wattage of both amps. Scary, isn't it?


So two Bassman 400s would give me 700 watts? Damn! The 400 is pretty damned loud as it is!


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Posted: Fri Jul 03, 2009 10:36 am
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Okay... let me see if I have this straight now. If i connect the two amplifiers, the output jack(s) should go to the speaker cab(s) from the second amlifier in the chain. But the controls are all (except for the master volume of the second amp) done via the first amp in the chain. Is that correct?


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Posted: Sun Jul 05, 2009 7:34 pm
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You're talking about an entirly differnt animal tha I am. You're using combos while I'm using separate heads and speaker cabs.

I get the part about linking the heads..... One four hundred head into the next 400 head. The bass gets plugged into the first head. The first head's controlls over-ride the controls of the second in the chain, except for its master volume.

My question is if I should plug my cabs in to the first (which wouldn't seem logical to me), second or both heads.


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Posted: Wed Jul 08, 2009 9:06 pm
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Separate cabs for separate heads! If you don't already have a second head, a more practical option could be to just buy a power amp, since that is all you're using of the second head in the chain anyway. I personally like using two heads, but not chained together. I prefer to have the flexibility of two entirely unique tones combined. All I use for that is an A/B switch with both channels running simultaneously.

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Posted: Sat Sep 12, 2009 2:47 pm
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AMP 1 - pre out
Amp 2 - effect return in

Amp 1 - speaker
Amp 2 - speaker


You are bypassing the the pre-amp of the slave amplfier (#2). Wattage isn't necessarily indicitive of dB SPL.


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