[RealInfo]

Hi all

I want to build a active speaker with built in tube amp in each .

How do I prevent microphony `?

Will it help if only the preamp will be small signal tubes base like ecc83
and the power will be solid stae ?

By the way the speaker is intended for keabords usage .


Many thanks in advance

EC

[Patrick Turner]

RealInfo wrote:

Hi all

I want to build a active speaker with built in tube amp in each .

How do I prevent microphony `?

Answer:- Do not build the tube amps into the speaker if you want
to avoid microphony.



Will it help if only the preamp will be small signal tubes base like ecc83
and the power will be solid stae ?

Guitar combo style tube amps with high gain 12AX7 and all other tubes
within the
combo box make sound coloured by the accoustic FB caused by the
vibrations.
Guys try to use non microphonic 12AX7.
Its the small tubes operating with high gain
at low levels which are most prone to microphony.

But for hi-fi, keep all tube amps well away from any vibrations.



By the way the speaker is intended for keabords usage .

Some guys use a head amp for their guitar amp, with speakers set up in a
separate box some distance away
which seems to me a better way to do things.
Ditto for any other musical instrument, including keyboards.

Patrick Turner.



Many thanks in advance

EC

[tubegarden]

I want to build a active speaker with built in tube amp in each .

I want to date a girl with multiple pairs of lips, so I can kiss what
I'm in the mood for.

Stupid idea. Just because some morons have some on the market does not
prove anything.

Get over it. We all have early enthusiasms for stupid ideas, at times.

I never rebuilt my Fender Super Twin Reverb Amp. I was such a lousy
guitar player, it didn't matter. Sigh.

Happy Ears!
Al

PS SS power for Musical Instrument amplifiers is not exactly a clear
vision of Heaven, neither ...

[Patrick Turner]

tubegarden wrote:

I want to build a active speaker with built in tube amp in each .

I want to date a girl with multiple pairs of lips, so I can kiss what
I'm in the mood for.

Stupid idea. Just because some morons have some on the market does not
prove anything.

Get over it. We all have early enthusiasms for stupid ideas, at times.

I never rebuilt my Fender Super Twin Reverb Amp. I was such a lousy
guitar player, it didn't matter. Sigh.

Happy Ears!
Al

Hey Al,

I don't wanna date the goirl with multiple fannies.

One, two, three, and six more to **** tonight, all needing to be
satisfied, no way man.......

But if she like multiple tubes in amplifiers, well, come right over here
baby.....

Patrick Turner.



PS SS power for Musical Instrument amplifiers is not exactly a clear
vision of Heaven, neither ...

[Phil Allison]

"RealInfo"

I want to build a active speaker with built in tube amp in each .

How do I prevent microphony `?

Will it help if only the preamp will be small signal tubes base like ecc83
and the power will be solid stae ?

By the way the speaker is intended for keabords usage .


** Errr - you have just described a standard, tube " combo amp ".

As made by Marshall, Fender, Peavey, Boogie, Orange & countless others.

Favoured by keyboard players all over.

Buy one.



...... Phil