Mesa Boogie 400+

Robb5150 · #1 01-15-2011, 11:25 AM

400+ very early breakup and not really a lot of volume! Any idea.

I am new to this amp.

Rumblefisher · #2 01-15-2011, 11:31 AM

Sounds like a power tube issue.
Did you buy this amp NOS? Used? Did you get a "good price"? I ask b/c if the seller knew the tubes needed replacement ($200-$300 job) then that wasn't very cool.

anderbass · #3 01-15-2011, 11:40 AM

One real easy thing to check is make sure your Effects Blend knob on the back panel is always set back to 0. (unless your using effects in the loop)

Robb5150 · #4 01-15-2011, 04:13 PM

Cheers guys!

£900 UK for the 400+ and a Boogie cab (1x15, 1x10, 2x6, and a horn, 4ohm)

Couldn't really run it up loud but sounded great at low volume. Its a fair bit of cash but have always wanted this amp for the alleged massive head room.

Wasn't till I ran it up later (master on 10! Pre on 6) that I realised I couldn't really get much out of it.

Also ran it up with an EBS 4x10.

Didn't even think to look at the loop blend so hope it's that.

Also is it right to have no audio when I have the rotary EQ knobs all on 0? Pre and power are up but nothing till I roll up the bass,mid,treb!? Is that normal?

Thanks for any and all help.

Have found a set of 12 matched tubes for £120 UK!

Thanks,

Robb.

rockstarbassist · #5 01-15-2011, 05:40 PM

Lol no. You're doing it wrong. My Pre volume was on 3 and Master on 1.5 and was too loud over both full stacks and the drums, just through a 610. it's absurdly loud.

Robb5150 · #6 01-15-2011, 06:25 PM

Hi RockstarBassist,

Now what your talking about is why I just put £1000 down on this thing!

Does your 400 pass audio when the Bass, Mid, Treb controls are on 0?

Cheers,

Robb.

anderbass · #7 01-15-2011, 06:27 PM

Quote:

Originally Posted by Robb5150

Also is it right to have no audio when I have the rotary EQ knobs all on 0? Pre and power are up but nothing till I roll up the bass,mid,treb!? Is that normal?

Yes that's normal, but a good starting point would be setting:
Bass knob at 2
Mid at 10
Treble at 2
Think of these settings as the halfway point on most other amps.

Robb5150 · #8 01-16-2011, 07:10 AM

Thanks for all the responses guys,

Anyone know the cab? It's a 1615?

anderbass · #9 01-16-2011, 09:30 AM

Its either a 1516, 1516B or 1516BE.
You'll find a bit of info in this thread: Mesa 1516/1516b/1516be
And then if you enter 1516 into our forums search window above you'll find several more older threads with info about these cool cabs.