Author Topic: L-Pad Attenuator  (Read 14096 times)

bigrigg

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Re: L-Pad Attenuator
« Reply #15 on: January 09, 2013, 03:54:31 PM »
This looks good man! I recently built a DrZ AirBrake for my Maz18, best decision ever, great live to give you more power tube saturation at lower volumes, and the bedroom playing too!

George
Would you mind supplying any links etc for the Zbrake build?  Thanks

hammerheadmusicman

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Re: L-Pad Attenuator
« Reply #16 on: January 09, 2013, 04:06:25 PM »
of course not..

http://www.andyharrison.net/files/AirbrakeLayout.jpg

that's verified too, by me! mouser part numbers too :)

be careful when you order though, as from mouser UK, the nig resistor didnt come with the clips that you set to certain ohms.. so i had to send for them seperate and pay postage!

George
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studiodunn

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Re: L-Pad Attenuator
« Reply #17 on: January 09, 2013, 04:56:58 PM »
of course not..

http://www.andyharrison.net/files/AirbrakeLayout.jpg

that's verified too, by me! mouser part numbers too :)

be careful when you order though, as from mouser UK, the nig resistor didnt come with the clips that you set to certain ohms.. so i had to send for them seperate and pay postage!

George
THANK YOU!!!!!!!!!

hammerheadmusicman

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Re: L-Pad Attenuator
« Reply #18 on: January 09, 2013, 05:16:56 PM »
You're very welcome, glad i can finally be of some service! ;)

i think the parts inc all hardware cost me about 60-70ish from mouser.. a hefty saving on almost 300!!

it is great attenuator. Transparent. Sounds greta with my Z, just like having a post amp volume knob, unlike the old marshall ones which are tone destroyers apparently!
I play Guitar, and Build Stuff..

bigrigg

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Re: L-Pad Attenuator
« Reply #19 on: January 10, 2013, 10:24:11 PM »
of course not..

http://www.andyharrison.net/files/AirbrakeLayout.jpg

that's verified too, by me! mouser part numbers too :)

be careful when you order though, as from mouser UK, the nig resistor didnt come with the clips that you set to certain ohms.. so i had to send for them seperate and pay postage!

George
gracias amigo !

alanp

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Re: L-Pad Attenuator
« Reply #20 on: January 11, 2013, 12:20:22 AM »
One thing that the Amp Garage thread mentions about the big power resistor that has taps on it -- you need to LIGHTLY sand the exposed coil, to make sure that the taps make contact. (Apparently there tends to be some coating over it.)
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culturejam

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Re: L-Pad Attenuator
« Reply #21 on: January 11, 2013, 12:28:24 AM »
I added an L-pad attenuator to a Valve Jr combo quite some time back. I didn't bother with all that fancy "additional cap" stuff like you guys.  ;D

I put mine in the amp chassis (on the back) to make it more like my Univalve. It works quite well, but the taper is somewhat lopsided.

I should also add that I was modding a V1 Valve Jr, which only had a 4-ohm output. So I added a 4-ohm resistor in parallel to bring it down to 8 ohms. It was a monster 20W resistor, by the way. No sense in taking chances.  ;D

Here's the info on it:
http://www.forrestwhitesides.com/node/81





Here is the amp (which I sold):




« Last Edit: January 11, 2013, 12:34:26 AM by culturejam »

slimtriggers

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Re: L-Pad Attenuator
« Reply #22 on: January 11, 2013, 08:54:28 AM »
This is a great project!  I wonder if the switchable bright cap thing would work with my Weber Mini Mass?  I never use it because it sounds like a wet blanket over the speakers.

thekyle55

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Re: Re: L-Pad Attenuator
« Reply #23 on: January 11, 2013, 06:02:05 PM »
I built an Airbrake a couple of years ago after reading a ton about attenuators.  It works well, and was fairly simple to build.  Not particularly cheap though, and I honestly decided I like to use pedals and the master volume better.

hammerheadmusicman

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Re: L-Pad Attenuator
« Reply #24 on: January 11, 2013, 06:08:50 PM »
I just find that it allows me to crank my maz a little more on stage, it wasn't too cheap, but was less t Han a third of the retail!
I play Guitar, and Build Stuff..

Stomptown

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Re: L-Pad Attenuator
« Reply #25 on: January 12, 2013, 12:19:51 AM »
I would rather build the brake lite. It is good up to 45 or 50 watts and its a bit cheaper. Anyone have any info on how to build one?

hammerheadmusicman

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Re: L-Pad Attenuator
« Reply #26 on: January 12, 2013, 05:02:34 AM »
No sorry, the airbrake is good up to 100 watts. i think parts would be a lot cheaper on your side of the pond though!
I play Guitar, and Build Stuff..

irmcdermott

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Re: L-Pad Attenuator
« Reply #27 on: January 12, 2013, 05:19:20 PM »
This looks good man! I recently built a DrZ AirBrake for my Maz18, best decision ever, great live to give you more power tube saturation at lower volumes, and the bedroom playing too!

George

do you have a link to the DrZ project you used?

hammerheadmusicman

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Re: L-Pad Attenuator
« Reply #28 on: January 12, 2013, 05:33:19 PM »
I did post it earlier in this thread, but here it is again :)

http://www.andyharrison.net/files/AirbrakeLayout.jpg
 
that's all i had..
I play Guitar, and Build Stuff..

irmcdermott

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Re: L-Pad Attenuator
« Reply #29 on: January 12, 2013, 08:24:02 PM »
I did post it earlier in this thread, but here it is again :)

http://www.andyharrison.net/files/AirbrakeLayout.jpg
 
that's all i had..


whoops. i missed it earlier. thanks!