Smaller size Dumble chassis?

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Normster
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Smaller size Dumble chassis?

Post by Normster »

Is anyone interested in a run of smaller sized Dumble chassis?

Brownnote and I have both built "DumbleLites" into Hammond and Bud chassis. (These amps kick some serious butt, BTW.) It seems the ideal size for the build is 17"x8"x2.5", which is not available as a standard box. Also, .050" aluminum may not hold up well for the long haul.

Anyway, Brownnote was thinking of talking to his chassis supplier about a run of these boxes, but obviously the more chassis we can order, the better the price break. We've only talked briefly, but the options are wide open. So, a few questions:
1. Interested?
2. Plain box or CNC cut? (tranny, tubes, IEC, the works?)
3. Painted? (color?), Silkscreened?

Also, is there a preference over sourcing parts yourself or having everything available as a kit?

At this point, I'm just trying to get a feel for what folks want. If there's enough interest in the same package, then Brownnote and I will start getting serious about putting the thing together.
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Bob-I
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Re: Smaller size Dumble chassis?

Post by Bob-I »

Normster wrote:Is anyone interested in a run of smaller sized Dumble chassis?

Brownnote and I have both built "DumbleLites" into Hammond and Bud chassis. (These amps kick some serious butt, BTW.) It seems the ideal size for the build is 17"x8"x2.5", which is not available as a standard box. Also, .050" aluminum may not hold up well for the long haul.

Anyway, Brownnote was thinking of talking to his chassis supplier about a run of these boxes, but obviously the more chassis we can order, the better the price break. We've only talked briefly, but the options are wide open. So, a few questions:
1. Interested?
2. Plain box or CNC cut? (tranny, tubes, IEC, the works?)
3. Painted? (color?), Silkscreened?

Also, is there a preference over sourcing parts yourself or having everything available as a kit?

At this point, I'm just trying to get a feel for what folks want. If there's enough interest in the same package, then Brownnote and I will start getting serious about putting the thing together.
I like the smaller chassis. My little Princeton chassis is awesome, tiny and easy to carry around.

I talked to Allyn about putting together a parts kit since he bought out an electronics supplier. That was months ago and he's pretty busy. I like the kit idea but I don't think many others do.
Normster
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Re: Smaller size Dumble chassis?

Post by Normster »

I'm with you on the size. Much easier to cart around and it's a total sleeper. :wink:

As much as I enjoy building from scratch, a kit sure would remove some of the headaches of machining the chassis, sourcing parts, etc.
daz
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Re: Smaller size Dumble chassis?

Post by daz »

yep I'd be keen if plain CNC cut and also has room for option for relay switching (eg. weber switch kit) and shipping is reasonable to australia.
How much we roughly looking at for the chassis?
Normster
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Re: Smaller size Dumble chassis?

Post by Normster »

daz wrote:yep I'd be keen if plain CNC cut and also has room for option for relay switching (eg. weber switch kit) and shipping is reasonable to australia.
How much we roughly looking at for the chassis?
The cost of the chassis will depend on the quantity of the run. Brownnote has the details, but I guess it's setup-fee + materials + machine time. It's the setup fee that kills you on a small run.

As for switching, the width of the chassis is the same as Dumble so there's room for relays, switches, and jacks. Not sure about the Weber board, though. With the Weber, you're stuck with either long signal runs or bringing AC into the area of your signal path. Neither of those options appeals to me so I don't use them.
Ed de Jager
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Re: Smaller size Dumble chassis?

Post by Ed de Jager »

I just bought a chassis from ampmaker in the UK which is about the same size as yours(about 3 centimeters less deep and just a little wider)but if brownnote`s is predrilled and everything and shipping to Europe isn`t too expensive...

Ed
daz
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Re: Smaller size Dumble chassis?

Post by daz »

Don't mean to undermine you Normster/Brownote.
But spoke to Nik @ ceriatone since he is closer to my shores (me being in Australia), he can get them made & cnc cut for $50 U.S 2mm thick plain aluminium. I think steel may be alittle cheaper.
His chassis are pretty nice since I used two of his before.
May not be worth your while for you U.S folks with shipping, but for me it is.
I guess I'm trying to squeeze things under $300 too!
Cheers!
Normster
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Re: Smaller size Dumble chassis?

Post by Normster »

daz wrote:Don't mean to undermine you Normster/Brownote.
But spoke to Nik @ ceriatone since he is closer to my shores (me being in Australia), he can get them made & cnc cut for $50 U.S 2mm thick plain aluminium. I think steel may be alittle cheaper.
His chassis are pretty nice since I used two of his before.
May not be worth your while for you U.S folks with shipping, but for me it is.
I guess I'm trying to squeeze things under $300 too!
Cheers!
No problem, Daz. BN and I are certainly not out to compete with Nik. We're all out there trying to get the most bang (or tone) for our buck. :wink:

The key thing that has me promoting the chassis or kit is the volume pricing we can get if enough people are interested. More of a coop thing than a business venture. The kit angle is more in response to all of the threads I've read from new amp builders who have difficulty sourcing parts. More experienced builders will have most of the supplies on the shelf so I doubt that many veteran builders will want to go that route.
otterpop
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Re: Smaller size Dumble chassis?

Post by otterpop »

Interested here. I would be in, nothing weird, I would prefer the black ODS look.
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fabiomayo
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Re: Smaller size Dumble chassis?

Post by fabiomayo »

A kit put together by you guys would be great.

I don't mind sourcing parts, but I find the chassis a bit of a problem.
(My first build was built into an old computer chassis I folded and
hand-machined myself - it doesn't look as good as you think :D )

What kind of trannies, resistors, caps, power supply caps would you
include? All important questions in evaluating the acceptance of a
kit.

thanks for the effort.
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Tonegeek
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Re: Smaller size Dumble chassis?

Post by Tonegeek »

I might be interested in just a plain chassis if it was generic enough to build a 50 watt HRM with 4 pre-amp tubes (1 for the fx loop)
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tonejunkie
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Re: Smaller size Dumble chassis?

Post by tonejunkie »

I would also be interested in a plain chassis with the nuts installed for mounting. Thanks TJ
GuitarsFromMars
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Re: Smaller size Dumble chassis?

Post by GuitarsFromMars »

I might be speaking for several people,so if I for now,gotta say what I want,I would like it predrilled for all the extruded components (trannies,pots,etc) and I think if you were to silk screen a faceplate on the chassis that would work.I have to ask a noobie question here:is it possible to add an option for footswitching between clean/dirt and/or tonestack defeat?I don't know enough about the build to be able to converse fluently about the design portions for the kit,but cats who are on the gig want to be able to switch settings.Is it possible to do this as an option portion in the kit?Thanks for the indulgence.
think pre-Rola
Normster
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Re: Smaller size Dumble chassis?

Post by Normster »

Moss is working with the machine shop to get some pricing now that we know a few folks are interested. (OK, maybe more than a few. :wink: ) I don't think we're going to offer a 50watt version since there's already plenty of those out there. Funkaliciousgroove can probably do another run if you guys need full size chassis. We're still wrestling with whether to leave room for 4 preamp tubes or just stick with 3. With 4 we could offer reverb or Dumblelator options but space inside the chassis might start getting tight.

As far as adding footswitching to the amp, the chassis has plenty of room for relays and we'll probably use a PT with a spare set of 5V taps for relay power. The footswitch jack could be added to the back ala Dumble.

The main thing is that this will be a Dumble "Lite" and not a full blown ODS. There are already enough resources on this site to put that together and I for one don't want to compete with them.
GuitarsFromMars
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Re: Smaller size Dumble chassis?

Post by GuitarsFromMars »

I understand,Normster-I was looking at the layout this PM and was trying to 'guess' whether the foot channel switcher would be possible.The tone defeat generally can be managed by hand.I am just looking at this from a practical gigging/jamming standpoint.Thanks.
think pre-Rola
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