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Old 17th January 2013, 11:39 AM   #1
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Default My first tube amp and speaker build I'm loven it

Hi diyers I've just finished my first tube amp
And am posting it up any comments or feed
Back would be great

I built siliconrays SR09 kit I didn't like the stainless
Look so I gave it a layer of gloss engine enamel

The only other mod was a line filter oh and I upgraded the
Line in plugs and speaker out terminals the ones supplied
Seemed a little cheep and flimsy

The only thing I'm not to happy with was the circuit got
A bit messy towards the end the amp claims to out put 10w
X2 I've acquired of eBay some 89DB 4" full rangers and am
Going down the PVC pipe road I'm thinking of getting another set
And running them in parallel would this amp have enough grunt?

I typed the speaker specs into a box designer calculator and
Converted that to cylinder form that's how I ended up with the
Size any comments or thoughts would be great thanx
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Old 17th January 2013, 11:48 AM   #2
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The other pics
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Old 17th January 2013, 12:00 PM   #3
Upfront is offline Upfront  Australia
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10 watts of power and 89db should be enough. But really would depend on your listening levels and room set up. I hope you paint the speakers the same colour as your car. I have a thing for orange!
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Old 17th January 2013, 12:56 PM   #4
palmas is offline palmas  Portugal
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Old 17th January 2013, 08:51 PM   #5
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Having probs with uploading
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Old 17th January 2013, 08:55 PM   #6
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Old 17th January 2013, 08:56 PM   #7
Bigun is offline Bigun  Canada
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You've made a cracking job of that amp from what I can see !
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"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
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Old 17th January 2013, 08:58 PM   #8
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Old 17th January 2013, 09:55 PM   #9
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Thanks for the comments I was thinking a deep red colour
For the speakers I'm already thinking of my next build am keen
To do it from scratch

Decent wattage any thoughts I'm after a schematic
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Old 17th January 2013, 10:03 PM   #10
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You can divide the tube vertically, in two parts, and make a very long and
thin triangular insert , so to make a tapering line.

It would work, and really benefit the upper part, the larger, containing the speaker;
now it's constrained and suffocated by the very near tube
If you put it larger ( the speaker, of course)

Last edited by picowallspeaker; 17th January 2013 at 10:06 PM.
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