Matchless/Bad cat build thread

[xtian]

Time to crayon on a logo badge!

[norburybrook]

Time to crayon on a logo badge!

yes, I've been thinking the same thing. It's missing a logo. I've a few amps/speakers would benefit from one. what though? a plate, a two rock style lettering?

M

[Colossal]

yes, I've been thinking the same thing. It's missing a logo. I've a few amps/speakers would benefit from one. what though? a plate, a two rock style lettering?

M

What is representative of you, your music, or interests? Surely your amps are at least one nicer than Two Rock....how about Three Rock?

[xtian]

Norbury Brook sounds picturesque... unless it's the town's drainage...

[Guy77]

That snake skin pattern is beautiful! Almost looks like real snakeskin. I will have to try that one day.
Congrats Marcus!

Cheers
G

[norburybrook]

thanks everyone.

THe colour scheme was dictated by what Tolex I had left over. This whole amps has been a leftovers project. It started with the chassis which was a Dumble chassis give to me by a friend a year or so ago. I had an old Marshall 50w OT that was a laydown type that had been in a box for 4 years...who uses laydown OT's? Anyway i mounted it standing up with a bracket. I had the tubes. I had leftover plywood for the cab and had leftover tolex/piping from builds so it was nice to use it all up.


I've found an ebay seller doing acrylic lettering so have ordered a white 'Norbury Brook' set of letters. lets see how it looks when it gets here in a week.

TBC.....



M

[10thTx]

How do you like the amp? Are you enthusiastic about the tone? Looking forward to another sound clips from you which I always enjoy!

I think your cab head looks fabulous!

With respect, 10thtx

[norburybrook]

How do you like the amp? Are you enthusiastic about the tone? Looking forward to another sound clips from you which I always enjoy!

I think your cab head looks fabulous!

With respect, 10thtx

Jeff,

I'm getting into it. I think all good quality tube amps sound good, the main designs are tried and tested and if yo use good components and make good solder joints you'll have a good sounding amp.

The clean is very nice, considering the signal goes straight from V1a to the PI it's really well balanced, I suppose that short signal path with no tone stack gives you real clarity.

The gain channel can be fierce it's a bit noisy on idle but there seems to be a lot of gain there so that would make sense.

Again, it's very focused and tight.

The tube /SS recto is nice, there's about 20vDC between the 2 and along with the extra 100uF filtering on the SS side makes for a subtle but discernible feel to the amp.

I'll post some sound clips as and when.

as i said above I've ordered an Acrylic logo to finish her off.

I don't know what it was that finally pushed me to do this amp, as I was going to go with one of those 2 builds you did, perhaps I htought this one would be 'more' different as I have too many amps and being different meant it could have a home.


M

[pdf64]

...The tube /SS recto is nice, there's about 20vDC between the 2 and along with the extra 100uF filtering on the SS side makes for a subtle but discernible feel to the amp...

What's the HT voltage (ie at the OT CT) between them when the amp is cranking out a high power signal? It's at high current draws that the reduction in sag provided by solid state rectification tends to make its presence felt

[10thTx]

I bet you'll get it sounding like you want and it'll be a great amp for you!

Look forward to your sound clips! Thanks, Jeff

[norburybrook]

...The tube /SS recto is nice, there's about 20vDC between the 2 and along with the extra 100uF filtering on the SS side makes for a subtle but discernible feel to the amp...

What's the HT voltage (ie at the OT CT) between them when the amp is cranking out a high power signal? It's at high current draws that the reduction in sag provided by solid state rectification tends to make its presence felt

yes that's the classic scenario for tube /SS rectifier difference but even at moderate levels there's definitely something between them I can 'feel'/hear. I was surprised as I've never had an amp with both before and wasn't expecting much.


M

[norburybrook]

I bet you'll get it sounding like you want and it'll be a great amp for you!

Look forward to your sound clips! Thanks, Jeff

Jeff, the more amps I build/own the more I realise this . It's still fun though tone chasing and building so that's OK with me.

I really do think this will be my last build though for myself anyway. It's been a great journey and I've met some great folk here on this forum


today I removed the EVM 12 speaker from my Dumble 1x12 cab and installed a vintage Celestion V30 , it works really well with this amp so it's staying in there. Need to be slightly careful as it's only a 60w speaker.

IMG_20200714_114523.jpg

M

[Colossal]

I really do think this will be my last build though for myself anyway. It's been a great journey and I've met some great folk here on this forum

M

Oh no ya don't, Marcus. You're not getting out of here that easy. Nobody leaves the AmpGarage or the Hotel California. You have a Steel String Singer to consider...

[martin manning]

Seconded. Everybody learns from these adventures, and having the product tested in a professional studio environment is hugely valuable.

[didit]

Seconded. Everybody learns from these adventures, and having the product tested in a professional studio environment is hugely valuable.

He's said as much in the past, more than once. You'll be back Marcus --- there are a few more amps in the cannon still to build.

Best .. Ian