[flipper]

On Wed, 01 Feb 2012 07:47:50 -0700, Lord Valve
wrote:

wrote:

On Jan 31, 11:14 am, Lord Valve wrote:
wrote:
No one needs them anymo you mic a smaller amp. No metal band runs
more than one or two of the array of Marshall stacks they like to have
and Marshall supplies dummy cabs and heads to many of them.

Define "high power."

LV

Certainly more than 50 to 100 watts-and the growth has been in 5 to
25-30 watt amps mostly.

Very few tube guitar amps over 100 watts output were ever produced.

The Marshall Major, the Ampeg V-9 (lead guitar version
of the SVT) and the Hiwatt DR-201 come to mind, but
none have been produced for quite a while now. Fender
made the horrid-sounding Super Twin (180 watts claimed;
could do maybe 130 with new tubes and high line voltage)
and the even more horrid-sounding PS-300. Amps
in the 50-100 watt range are still in production and still
quite popular.

The AC30 is neither really "Class A" nor really 30 watts-it will put
out quite a bit more if the signal level in is high enough.

You can argue with Phil about that one.

It's Class A until you run it hard.

I understand what you're saying but it might be confusing to those who
don't. You can run any Class AB amp at lower Po so the tubes stay out
of cutoff but that doesn't turn the amp, itself, into a Class A
amplifier. It's still a Class AB amp.

The AC30 can do a bit more before cutoff because they're running the
tubes hot at 15 Watt vs the manufacturer's Class AB "Typical
Operation" of 11 Watt (Design-Center 12 Watt, Design-Maximum 13.2
Watt).

Good luck getting
"quite a bit more" than 30 watts out of four El-84s,
though.

Maybe if you square wave it.


A lot of AC15 and AC30 clones are being built.

The Chinese ones are ****.


Lord Valve
Expert (******s are encouraged to whine about it)