is it possible (switch design)

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I'm Painting Again
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is it possible (switch design)

Post by I'm Painting Again » Mon Feb 27, 2006 2:10 pm

1.

I need a quality switch that can switch between 3 different guitar amp speakers..basically I'm building a cabinet that will house a small tube amp at the top as well as three 10" speakers that I'm able to switch between..a Regular switch would be fine and most likely thats what I will end up with


Please recommend a good quality switch
that would do the job if you would be so kind..

or

2.

Would it be possible to have a "foot stomp" style switching mechanism that could do it? I think it would be more fun for the musician to be able to switch mid song..

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Post by apropos of nothing » Mon Feb 27, 2006 4:06 pm

A little spendy, but likely worthwhile:
http://www.voodoolab.com/ampselector.htm

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Post by I'm Painting Again » Mon Feb 27, 2006 4:41 pm

this thing doesn't look like the right kind of thing..is it?

I want just a simple switch that I could solder to the 8Ohm speaker connections that i could switch between with..or ideally stomp switch with..I could build the stomp box myself even..

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Post by brianroth » Tue Feb 28, 2006 12:53 am

Making sure I understand....

OK, one amp and three different speaker boxes (A, B,C)?

You want to send the amp's output to A *or* B *or* C?

No need to do combinations like A *and* B, A *and* C, etc etc?

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Post by I'm Painting Again » Tue Feb 28, 2006 5:24 am

brianroth wrote:Making sure I understand....

OK, one amp and three different speaker boxes (A, B,C)?

You want to send the amp's output to A *or* B *or* C?

No need to do combinations like A *and* B, A *and* C, etc etc?

Bri
output transformer to speaker A, or Speaker B, or Speaker C..never together..the cabinet will house all 3 10" speakers one on top of the other and the tube amp at the top..

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Post by brianroth » Tue Feb 28, 2006 8:53 am

Two possible solutions, and the first is the simplest (but, precludes a "stomp box" controller)...

One pole, 3 position rotary switch, with contacts big enough to handle the current. Electroswitch manufacturers them, Mouser, DigiKey, etc sells them.

An electronically controlled "array" of relays, which could be operated via footswitch(es).

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Post by I'm Painting Again » Tue Feb 28, 2006 9:39 am

Thanks Bri you truely are a great help here..

now I'm sure a rotary or toggle switch like your talking about would be realatively inexpensive..could someone recommend one? also how do I figure out what the current is through the wires? you know as to purchase the correct type of switch?..my next question is how hard and expensive is it to do a relay thing like you say for the "stomp" control?..

This is the xfrmr:

Woodward-Schumacher TF500-0-606-528, 4K input, 8 ohm output

this is the amp:

http://www.rru.com/~meo/Guitar/Amps/Kal ... schem.html

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Post by brianroth » Tue Feb 28, 2006 11:21 am

For a small amplifier, a 2 Amp contact rating will suffice. Mouser (and others) stock Electroswitch models that can handle that current.

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Post by kayagum » Tue Feb 28, 2006 1:30 pm

You may want to check these out: http://www.tonebone.com/


More specifically: http://www.tonebone.com/tb-cabbone.htm

Not cheap, but may get you started...

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Post by I'm Painting Again » Tue Feb 28, 2006 3:00 pm

kayagum wrote:You may want to check these out: http://www.tonebone.com/


More specifically: http://www.tonebone.com/tb-cabbone.htm

Not cheap, but may get you started...
Thanks but I definitely dont want one of those for this project..

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Post by I'm Painting Again » Tue Feb 28, 2006 3:07 pm

brianroth wrote:For a small amplifier, a 2 Amp contact rating will suffice. Mouser (and others) stock Electroswitch models that can handle that current.

Bri
thanks again..I need to research the why here..so I can do it again with other amps in the future..I think I might have an idea how to make a stomp switch from researching the terms you through out in the other post..

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Post by nclayton » Tue Feb 28, 2006 5:29 pm

If you're thinking of hotswitching speakers while you're playing through the amp, I'd just recomend trying to find a make before break switch. If break before make, when you switch it can throw some really high voltage spikes back at your tubes which may shorten their life. In practical use it might not make any difference, but if you have a choice definitely lean toward make before break.

Or wire something like a 20 ohm 5 watt resistor permanently across the output of the amp (inside the switch box) so the output never sees a completely open circuit.

Ned

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Post by I'm Painting Again » Tue Feb 28, 2006 7:27 pm

Hey Ned, do they usually call that shorting and non shorting types? Is that another way to say mbb & bbm ?

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Post by nclayton » Wed Mar 01, 2006 8:56 am

beard_of_bees wrote:Hey Ned, do they usually call that shorting and non shorting types? Is that another way to say mbb & bbm ?
Totally.

Ned

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Post by I'm Painting Again » Wed Mar 01, 2006 12:34 pm

danke Ned!

I'm not sure now I'm going to be able to design and build a stomp switch on my own..anyone have a design or want to coddle me in the process or at least point me in some direction?

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