Installing a Transformer in DIY Subkick

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Installing a Transformer in DIY Subkick

Post by elbows » Fri Jul 16, 2010 10:14 pm

I've recently revisited a home-made Subkick that I had abandoned after its signal seemed too low to use even in front of a DI box.

Been doing some thinking, and (correct me if I'm wrong here, please) I think installing a transformer (perhaps the one I pulled from an SM57) in the Subkick could solve some of my problems.

Is this a fair approach?
What kind of transformer is best suited to take on this duty?
What would be the best way to mount it and wire it?
Any other ideas?


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Post by bantam » Fri Jul 16, 2010 10:39 pm

read up on impedance. it is resistance that is frequency dependent. so if your xfo wont pass below 80hz it could be doing more harm than good. all 1:2 or 1:4 transformers are not alike, thats where you need to know impedance ratio.

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Post by A.David.MacKinnon » Sat Jul 17, 2010 2:17 am

Check your connections. I made a sub kick a few years back and found that the output was huge even without a transformer. I usually have to pad the mic pre when I use it.

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Post by rolandk » Sat Jul 17, 2010 7:44 pm

I'm using a Radio Shack unbalanced to balanced xfmr, works great. Maybe your speaker is bad? Try running some signal through it.
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Post by strdsk » Sun Jul 18, 2010 4:40 pm

Something is def wrong. Those things have tons of output. I've made MANY of them...all need padding.
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Post by RodC » Thu Jul 22, 2010 1:19 pm

strdsk wrote:Something is def wrong. Those things have tons of output. I've made MANY of them...all need padding.
Agreed, much much higher than most dynamic mics. Maybe your preamp dont like a real low impedance load... not likely, but you may want to try a different one.
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