To Power Condition or not?


I have 6 monblock amps (balanced bidging of Belles stereo amps).
4 are OCM 200s (100 amps of current / 400 watts balanced)
2 are the new 350A (>30 amps current / 800 watts balanced)
2 Velodyne Subs.

All front end components are through a Bybee Pro Conditioner (no amps connected)

I have been using a TICE Power block - Titan for the power amps and have run out of receptacles since I added 3 new amps. (only supports 6 power cords).

Questions:
Should I add another Tice Powerblock to expand the connections?
Should I use any power conditioning on the amps?
Should I run X+ new 20 amp circuits from the main electric supply panel and direct connect the amps & subs?
How do I eliminate the 100 Hz hum (other than lifting the grounds which seems to reduce it significantly)?
harleyhawk

Showing 5 responses by sean

I can't believe that a Tice Power Block / Titan combo could feed all of those amps under load and NOT cause some type of voltage drop / signal decay. My suggestion is to get a couple of dedicated lines just for the amps and have the Titan converted over to a full fledged Power Block. This is not that hard to do. You could then split the current draw between the two Power Block's, which were in turn being fed off of their own dedicated lines.

Quite honestly, you really do need several more Power Blocks to do things right. With that kind of set-up, i would consider 4 Power Blocks a minimum and 6 as being "good".

The other alternative to this is to use one phenomenally huge Isolation transformer i.e. something like a 10 - 12 KVA model. You can find these surplus and it would probably cost you less than one Power Block at MSRP. It just wouldn't have the "audiophile approved" name on it. Sean
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The older Tice Power Blocks / Titan's are NOT "normal" power line conditioners. Each unit houses a single 43 pound 1875 watt isolation transformer. For best results though, one should not be pulling more than about 1000 - 1200 watts out of each transformer, as this pretty much guarantees adequate headroom and minimizes the potential for transformer saturation. Running a Power Block with a Titan minimizes the potential for transformer saturation, but still limits you to one 15 amp circuit at best. As such, re-configuring the Titan to act as a Power Block would allow you to use it as a separate ( rather than "reserve" ) isolation transformer, allowing you the use of another 15 amps of current delivery from another circuit. So long as you keep the current draw down to about 10 amps or so out of each transformer under load, this would provide superior results than running them in the "stacked" or "piggy-back" mode that Tice suggests.

The only benefit to running the Power Block / Titan as they come from the factory is if you are limited to one circuit for the entire system. Otherwise, you've increased capacitive coupling i.e. reduced isolation by running them in parallel on the same circuit. This is due to stray capacitance. Running them off of and as separate circuits would actually increase available power to the amps and increase isolation. Sean
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Harley: You have enough transformer in the Tice to run ONE good sized stereo amp and that is all. You might be able to get away with two amps if you listen at rather moderate volumes or have high efficiency speakers. Ideally, you wouldn't have anything capable of pulling more than about 1000 - 1200 watts hooked up to the Tice. I have NO doubt that this is causing some of your problems. The Tice might be capable of supplying the quantity of 1800 watts of power but that doesn't mean that all 1800 watts would be of the same quality.

Try plugging the amps directly into the wall and see what you get. While the sound will change due to the noise floor increasing, you should be able to hear a drastic increase of dynamics under load. Even plugged into the wall directly, you are probably going to run into current starvation if you really stood on the throttle. I have amps that can pull 20+ amps individually when really cranking things up on low impedance, low sensitivity speakers.

Just because you have six outlets on the Tice does not mean that you can hook amps up to all of them. Doing so would be like assuming that you have money in the bank simply because you still have checks in your checkbook. It just isn't so.

With what you are trying to run, you really need a dedicated 100 amp breaker box and the associated dedicated wiring / outlets just for your system. Sean
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Glad to hear that things are pulling together for you. Sounds like you had the electrician busy for a while. It's not unusual to think that you are done only to find yourself with yet another project that came about as a result of the other "upgrades" you just performed. I think that we can all relate to that part of the equation : ) Sean
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