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Author Topic: Laney Cub Valve Amps  (Read 29742 times)
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Fritz Brand
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« Reply #75 on: December 03, 2009, 06:19:24 pm »

Cool Matt, You are welcome to open my 8, I was going to send it to you to look at improvements next year anyway. Welcome to take pics and clips and whatnot as well.

My leave starts on Monday the 14th, I might hit the road shortly thereafter, but if we can do Monday, Tuesday or Wednesday that would be cool.

PM me if you would like to set something up.

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matta
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« Reply #76 on: December 03, 2009, 08:26:52 pm »

PM me if you would like to set something up.

Done!
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Matt Allison
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« Reply #77 on: December 06, 2009, 03:28:10 pm »

Forgive my naive questions ...
(yes ... I'm still playing the newbie card  Cheesy )

If you were to compare the Blackstar HT-5 to the CUB 10; what would you find?
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« Reply #78 on: December 06, 2009, 05:39:30 pm »

5 watts?
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« Reply #79 on: December 07, 2009, 02:04:26 pm »

KayDub and I went to go check out the Cub10 on friday at Bothners N1 City. I took the voucher with that Alan organised for us and when I payed for it they gave me 35% discount, because they were having a birthday special. I love being in the right place at the right time! Cheesy R2200 for this amp is a give away man.

Thanks for the voucher Alan, much appreciated.
Peace  Tongue
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« Reply #80 on: December 07, 2009, 02:09:09 pm »

KayDub and I went to go check out the Cub10 on friday at Bothners N1 City.
Peace  Tongue

And is it good stuff, seeing that you have had the whole weekend to test it?
Would you reccomend it?
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« Reply #81 on: December 07, 2009, 02:12:48 pm »

Sheeez Squonk, it's lekker! You must go and get one. I've got one. Stop stalling, you gonna be in trouble but get it.
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« Reply #82 on: December 07, 2009, 02:25:37 pm »

KayDub and I went to go check out the Cub10 on friday at Bothners N1 City.
Peace  Tongue

And is it good stuff, seeing that you have had the whole weekend to test it?
Would you reccomend it?

I've never had a valve amp before, but my untrained ear tells me that it's great Smiley
Also, some reverb would be kewl, but now I have an excuse to hunt for a Holy Grail Cheesy

Cheers
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« Reply #83 on: December 07, 2009, 02:37:32 pm »

Wow, what luck - http://durban.gumtree.co.za/c-Stuff-for-Sale-musical-instruments-Electro-Harmonix-Holy-Grail-W0QQAdIdZ173338333 - yes it's a shameless plug for mine Cheesy sorry for the hijack.
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« Reply #84 on: December 07, 2009, 05:36:24 pm »

Wow, what luck - http://durban.gumtree.co.za/c-Stuff-for-Sale-musical-instruments-Electro-Harmonix-Holy-Grail-W0QQAdIdZ173338333 - yes it's a shameless plug for mine Cheesy sorry for the hijack.

Hahaha, no not shameless at all, you've thoughtfully drawn the attention of a fellow forum member to a particular piece of equipement that this person has already shown a passing interest in  Smiley
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« Reply #85 on: December 07, 2009, 07:24:53 pm »

Wow, what luck - http://durban.gumtree.co.za/c-Stuff-for-Sale-musical-instruments-Electro-Harmonix-Holy-Grail-W0QQAdIdZ173338333 - yes it's a shameless plug for mine Cheesy sorry for the hijack.


Hahaha yeah, saw that earlier today. Unfortunately used the GAS cash I had on the amp Tongue Maybe next time Sad
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« Reply #86 on: December 14, 2009, 03:39:59 pm »

Hey Guys,

Well today was amp mod day, before Fritz even arrived this morning I had 2 fellow Forum guys drop off their amps for mods. Another Champ and an Epi Valve Jnr, ah the smell of summer time mods  Cool

When Fritz arrived and we got to work on his little Cub 8.





As you can see from the pics it is pretty typical Chinese assembly/parts, first time I've come across a valve amp using SMD resistors (which I'm not happy about), but it does allow them to get the whole amp onto that SMALL PCB and the contruction is fairly solid, bar the ridiculously small signal traces.

First thing to address was to see if we could lower the hum a bit. As noted the amp suffers from a couple different hums/buzzes, part of which comes from the AC heaters. This was a fairly quick fix and a turn or 2 on the internal trimpot and we found the sweetspot. The indicator lamp as I shared is not implemented that well, any change in AC voltage can mean it turns on/off... an AC lamp will be a better bet powered off the heaters and it turned itself on and off at will during our tests.

Here are some before and after clips RE the hum:

Stock Cub 8 Hum
Modded Cub 8 Hum

Following the hum mod we decided to try a couple 'quick' mods/changes.

First up I recorded a little piece of music with chords and some picking into my DAW and then used a Reamp Box to send the same signal back to the amp, it is the same performance each time, with the same mic/placement and gain settings, so any chance you hear is a sum of the mods/tweaks. Signal was via my PRS SE ONE witha single P90, DI'd into and API 312 Mic Pre into Pro Tools.

The stock amp has Ruby Tubes. Ruby source tubes from all over and rebrand them, infact Mesa use Ruby, so you know they have undergone some form of QC outside of the factories they come from.

I wasn't that surprised to notice the difference between them and the JJ's were not night and day, but rather more minute, coming in the way of being a little more defined with the JJ's, the attack was cleaner/clearer, but the stock Ruby's were not bad, WAY BETTER than the cheap no name Chinese ones in say the Fender Champion 600.

So after swapping out the tubes we decided to sub out the Super 8 Celestion speaker with a Jensen C8R, boy did THAT make a difference! The Celestion is muddy and indistinct, the Jensen is alot tighter and brighter with more note definition/clarity and that was fresh out the box, it will smooth out a bit as it is broken in.

In the end Fritz left with the amp with a bit of hum reduction, a new set of valves and speaker, and not too much money spent - not bad considering the cost of the amp to start with and a VERY different amp from stock.

I've uploaded a couple clips and you can downloaded them below, in all cases the Tone was set at 12 o'clock and the HALF gain at 5, the FULL gain at 10 on the dials.

Stock Cub 8 - Half Gain
Modded Cub 8 - Half Gain with Jensen and JJ's
Stock Cub 8 - Full Gain
Modded Cub 8 - Full Gain with Jensen and JJ's

Cheers

Matt
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« Reply #87 on: December 14, 2009, 04:50:08 pm »

BTW - last link above should be
Modded Cub 8 - Full Gain with Jensen and JJ's

That makes a huge difference Matt, especially driven.

Did you by any chance try plugging it into a bigger speaker cab too?
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« Reply #88 on: December 14, 2009, 04:59:31 pm »


Thanks Alan, I fixed the link!

RE the larger speaker cab, nope, didn't cross my mind at the time, even though it was sitting of my AC30 with vintage blues and RIGHT next to it my 2x12 Fender Cab with C12N's... DOH! I guess I was in the mind set of working on it as a Combo, even though it has an external 8 Ohm out socket.... Fritz, want to come back? LOL

I'm sure it will sound great, even these 'simple' mods can be done by anyone, though there is a risk of shock/electrocution with swapping the speaker and the hum mod/tweak because you need to remove the whole chassis.

I must say I'm SUPER impressed with the Jensen C8R, I bought it to use with my own Fender Champ, that I never got around to building, so we opened the box for the first time and it made such a difference, part of the 'crunch' I was missing from the stock amp showed up in the cranked amp as you shared.

Cheers

Matt

BTW - last link above should be
Modded Cub 8 - Full Gain with Jensen and JJ's

That makes a huge difference Matt, especially driven.

Did you by any chance try plugging it into a bigger speaker cab too?
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« Reply #89 on: December 14, 2009, 05:17:54 pm »

Now if you could just get hold of a Cub 10 Smiley
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