The Doom Room: ILF Edition

[whiskey_face]

The last thing I would do is design an amp around a tube only 1 manufacturer makes.

But wtf do I know.....

[samzadgan]

The last thing I would do is design an amp around a tube only 1 manufacturer makes.

But wtf do I know.....

yeah...i think as a designer its cool...as someone who's buying it sucks...maintenance costs would be rediculous! Plus...i cant even imagine the weight of something like that...

[Iommic Pope]

The last thing I would do is design an amp around a tube only 1 manufacturer makes.

But wtf do I know.....

You know that if you had to retube a 400W amp, the less you had to shell out the better.
But also, you know that the manufacturer can charge whatever the fuck they want when they're running the show on that tube

Could be cool, could also be a massive pain in the arse.

Weight is what the Doom Workout is for!

[samzadgan]

Fucking Marshall died on me tonight!

Probably a fuse as it just cut out...tried other power outlets and same deal.

Its rediculous...both amps i brought to Australia have got fucked up...im wondering if the power outlets are shit here or the power isnt stable...i dont get it...its pissing me right off!

[Iommic Pope]

Jiggled something loose in transport?

A fuse is usually a sign of something else.
Plus how old is that Marshall?

[samzadgan]

Jiggled something loose in transport?

A fuse is usually a sign of something else.
Plus how old is that Marshall?

Hoping its not anything else...the marshall is 41 years old...old...

[Iommic Pope]

Might just need some loving.
Could be something simple.
The AOR blew up some Mullards when I first got it because a resistor in the bias circuit shit itself.
Worth getting looked over.

[new05002]

Power is a function of the particular tube, the primary impedance of the OT, OT power vs frequency (bandwidth), the plate voltage, the screen voltage, and in some respects the bias (but this is not the limiting factor or overall controlling factor).

The average 200W or 300W Hiwatt is producing 100W per pair of KT88 with 660-680V plate, 410-430V screens with the given primary impedance of the OT. So to add more wattage you could redesign the OT primary impedance and jack up the plate to 800V with more screen voltage to compensate (on paper this works out well). Assumes the OT bandwidth can account for the increase in power as well.

Also requires a stricter definition of power. Generally I am looking at low THD (low distortion) power at a decent bandwidth. So if the OT is rated for 100W at 30-18k Hz, that is a good bandwidth for 100W but if you want to increase the power likely it will shrink the bandwidth to compensate.

[Harry_Manback]

功率为特定管的功能，对OT的初级阻抗， OT功率与频率（带宽） ，板电压，屏幕电压，并在某些方面的偏差（但这不是限制因素或总体控制因素） 。

平均200W或300W HIWATT是生产每对KT88的100W与660-680V板， 410-430V屏幕与OT给定的初级阻抗。因此，要增加更多的瓦数，你可以重新设计的OT初级阻抗和抬高板800V与更多的屏幕电压，以补偿（在纸上这个很好解决） 。假设OT带宽可占的增加，电源为好。

此外，需要权力的严格定义。一般来说，我期待在低THD （低失真）电源在一个体面的带宽。因此，如果OT的额定100W的30-18k赫兹，这是一个良好的带宽为100W ，但如果你想增加电力有可能会缩小带宽来补偿。

Well, duh.

[AxAxSxS]

All I know is that peavey seems to have gotten it right with their heavy as balls CL400. I'd like to see nic build one of those, with the Dunwich eye for correcting shortcuts and overly conservative voltage levels. If you lived closer I'd totally donate mine for dissection and fine tuning.

[new05002]

功率为特定管的功能，对OT的初级阻抗， OT功率与频率（带宽） ，板电压，屏幕电压，并在某些方面的偏差（但这不是限制因素或总体控制因素） 。

平均200W或300W HIWATT是生产每对KT88的100W与660-680V板， 410-430V屏幕与OT给定的初级阻抗。因此，要增加更多的瓦数，你可以重新设计的OT初级阻抗和抬高板800V与更多的屏幕电压，以补偿（在纸上这个很好解决） 。假设OT带宽可占的增加，电源为好。

此外，需要权力的严格定义。一般来说，我期待在低THD （低失真）电源在一个体面的带宽。因此，如果OT的额定100W的30-18k赫兹，这是一个良好的带宽为100W ，但如果你想增加电力有可能会缩小带宽来补偿。

Well, duh.

bazinga.

You got a true laugh out of me and that made the day so far.

[whiskey_face]

Thanks harry, you made me LOL in a waiting room lolol.

[D-Day]

LOL! Nice one Harry. I will add another vote of confidence for the PV CLassic 400. I fall in love more with every practice and show. And another voice of dissent in regards to the KT120. The first time I heard of that tube was Ben V saying that they were shoddy and did not perform as advertised.

And I know this is the doom room and the band I'm about to mention is not doomy a bit but for FUCK'S SAKE if A Place To Bury Strangers gets anywhere near you you NEED to see them. My first time seeing them live was SUnday night and I just can't get over it. They were amazing and louder than your friendly neighborhood militarized police force's LRAD.

[ShaolinLambKiller]

Harry hit it on the head lol.

odontophobia yea it was brought up when I was post about Mills again. it was the weight that nick immediately caught cause it's less than many 100w tubers.

[D.o.S.]

I wish I could get more into APTBS. Maybe I should check 'em out in person, but their records, while sounding great, don't do much for me.