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In Reply to: Re: Auricap tweak across ac OUTLETS posted by audionutge@yahoo.com on April 13, 2007 at 13:16:55:
Hi Alan,
can you give us the guide on how to DIY the choke/transformer combo that you are using? Thanks.
Follow Ups:
Currently I have two different designs. The first design is the transformer / choke method. The choke is wired in parallel on the secondary. Basically wire one choke per duplex outlet. In my set up I have 4 in this application. The second design is a filtered power cord...this design is used for my pro work...sorry guys. I have a future project coming up for the primary side of the transformer...I just ordered a pair of 193M's for the main power cord filter. Stay tuned....If you are looking to use the choke as a parallel plug in...that's a easy set up. Use at least 18ga x 3 power cord (12ga x 3 is better). Keep the power cord as short as possible...less than 3 feet. Wire the hot and neutral to the choke wiring and the earth ground to the choke housing...the choke must be grounded for best effect. The choke runs cold so you do not have to worry about heat build up. It only draws 64mA to 152mA pending line voltage / frequency. The 193L is rated for 300mA. When selecting chokes try to keep the ohm rating as close to the Hz frequency as possible. Only use 300mA or larger chokes for parallel filtering pending your location in the world.
Thanks Alan, will the transformer/choke method work on a balanced transformer without degrading the benifits from the balanced power? I mean, will it be beneficial to put chokes on the outlets coming from the balanced transformer?
Thanks again.
jimmy
Balanced a/c can be choked. I suggest choking the primary side for max benefit first. The 193L is good for this application. You will experience two different tonal qualities pending the transformer side the choke is installed. The effect is similar to comparing isolation and balance modes within the same transformer. The isolation method rolls off the top end to provide more warmth and the balanced method rolls off the bass to provide more bottom end extension. After the primary is dialed in experiment with the secondary side in order to balance the circuit...choke > transformer > choke...balance is important when designing with transformers...so many people get it wrong because they only filter one side of the trannie...one sided filtering throws the magnetic field in the transformer out of whack.
I asked about the Hammond a while ago. You can connect wire from the choke to the connector and plug it in AC outlet. I have ordered one and it's on the way too. Will try later.
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