Rocket Recto

Express, Liverpool, Rocket, Dirty Little Monster, etc.

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lpd
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Rocket Recto

Post by lpd »

I have taken ownership of an Fowler constructed RJ rocket and so far am very pleased with this amp. Going to roll some tubes to voice it to taste, but have a rectifier/technical question regarding it.

I substituted a 5U4 rectifier in the ps as it used a higher voltage pt 290-0-290 and I wanted to sag voltages down a notch. With the 5U4 it sounds amazing. Nice textured cleans and as I turn the volume up it just livens up nicely. I'm curious if I can try a 5R4 in there or would I affect output tube bias ect?
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xtian
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Re: Rocket Recto

Post by xtian »

The Rocket is cathode biased, so no trouble when you lower the overall voltage by substituting a different rectifier tube.
I build and repair tube amps. http://amps.monkeymatic.com
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lpd
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Re: Rocket Recto

Post by lpd »

xtian wrote:The Rocket is cathode biased, so no trouble when you lower the overall voltage by substituting a different rectifier tube.

Perfect. Looks like I can experiment a little. Any suggestions on speakers? I tried it on an ev15 but abit bassy to say the least.
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xtian
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Re: Rocket Recto

Post by xtian »

The Rocket is built bassy. Don't be afraid to turn the Bass control way down. With this in mind, I have not tried a cab or speaker that sounded less than awesome.
I build and repair tube amps. http://amps.monkeymatic.com
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lpd
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Re: Rocket Recto

Post by lpd »

xtian wrote:The Rocket is built bassy. Don't be afraid to turn the Bass control way down. With this in mind, I have not tried a cab or speaker that sounded less than awesome.
Damn it is bassy. I've got the knob at 8:00 right now. Although I'm sure a ported 15 doesn't help matters either.
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M Fowler
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Re: Rocket Recto

Post by M Fowler »

I normally run Celestion Vintage 30 or WGS Retro 30 or WGS Veteran 30 and even Mojotone copy because they are brighter speakers and really let the Rocket come through nicely. :)
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Bob S
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Re: Rocket Recto

Post by Bob S »

It might have been RJ himself who called Rockets fat bottom girls.
Good analogy.
I likes a green & a blue in a 2 x 12 (semi) open back cab.
Great amps & you got one made by the Rocket Man himself.
Good Score.
Why Aye Man
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lpd
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Re: Rocket Recto

Post by lpd »

Bob S wrote:It might have been RJ himself who called Rockets fat bottom girls.
Good analogy.
I likes a green & a blue in a 2 x 12 (semi) open back cab.
Great amps & you got one made by the Rocket Man himself.
Good Score.
Yeah it's a great amp. I prefer a 5U4 in her with the higher voltage pt as it warms it up a little and becomes abit more dimensional in tone. Still tube rolling as well to fine tune to taste but the amp at 10:00 I get very clean warm punchy character at 2:00 it grits up nicely and full out I get decent distortion but a pedal would push it just right.

Thoughts on a single scumback 30 watt alnico driver with the amp or am I pushing my luck with the speaker rating?
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