Question about Crest Audio CC5500 Amplifier

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Need a power transformer from 220v input to 120v output

I recently bought a CREST CC5500 amplifier and I realized it is only 120v , 20a-60hz. I need to run it with 220v, what can I do to make the amplifier go from 120v to 220v?? Can I internally change or switch something? Or I need a power transformer from 220v to 120v?, if sow, how many watts does the transformer has to have? wich one should y buy? 8 Ohm Stereo - 1150 W 4 Ohm Stereo - 1800 W 2 Ohm Stereo - 2750 W 4 Ohm Bridged - 5500 W

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  • Master
  • 1,875 Answers

Yes, you need a step down transformer. These are often rated in watts (the power rating is the same on both sides of a transformer) so it is easy enough to match this with the power consumption of the stereo. Apparently you will need about a 4kW transformer eg

http://www.220converters.com/store/p/45-Simran-THG4000-4000-W-Watts-Step-Down-Voltage-Converter-220v-to-110v-Transformer.html

Ugly things.

Posted on Jun 23, 2017

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Posted on Jan 02, 2017

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SOURCE: no power

These amps are very compact and are not the easiest to work on. If you are not experienced at repair, I would not recommend you start here. Where are you located?

Dan

Posted on Jan 14, 2009

  • 117 Answers

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The pre amp. inside the amp. is burned. A local shop can most likely fix it for about 100.00.

Posted on Dec 19, 2009

caroldon
  • 17130 Answers

SOURCE: how to activate 70v line of crest audio cki 800v

First of all the 70 volt line is used when we are dragging long lengths of speaker wires. hence to counter the drop we use a high voltage line brring it further down without any remarkable drop and use a step down matching transformer to power the speaker according to the impedance of the speaker to the secondary of the transformer. Connect the 70 volt to the 70 volt output in the amplifier. Now connect the other end of the wires tto the primary of the 70 volt transformer. Use the secondary output to connect to the speaker using the tap most suitable..2, 4,6,8 ohms . Check the phasing when you connect or reverse if the bass quality is less.
Hope this helps. Good day

Posted on Jul 19, 2010

  • 5370 Answers

SOURCE: when i turn on my crest audio 8001 it stay in

The power transformer is getting short and overheated causing it to go in thermal protection mode.Also if the amplifier gets overladed by its connection, it goes to thermal mode.
The problems i have seen most often in Crest amplifiers is bad capacitors. They look fine from the outside but pull one out of circuit and measure it and there bad. These are the small electrolytic types. there are 2 sets of solid white wires from each output module to the output relays. Inject a a signal into the amp and take a look at the signal on those white wires. If the signal looks clean with minimal DC offset then you have bad caps causing it to stay in thermal protect. A very common crest amplifier problem.
Check in between the heatsink's. These amps have a tendency for those heatsinks to arc across the sinks. There are only 2 thin rails that hold the modules and rough tour duty service can cause those rails to bend and the sinks to touch and arc. Even a bug getting between the sinks can cause them to arc if the amp is running hard!
Also look for open resistors. This are possibilities, that can cause the amplifier to remain in thermal protect mode.
------------- This should help.Thanks.Helpmech.

Posted on May 31, 2011

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How to activate 70v line of crest audio cki 800v


First of all the 70 volt line is used when we are dragging long lengths of speaker wires. hence to counter the drop we use a high voltage line brring it further down without any remarkable drop and use a step down matching transformer to power the speaker according to the impedance of the speaker to the secondary of the transformer. Connect the 70 volt to the 70 volt output in the amplifier. Now connect the other end of the wires tto the primary of the 70 volt transformer. Use the secondary output to connect to the speaker using the tap most suitable..2, 4,6,8 ohms . Check the phasing when you connect or reverse if the bass quality is less.
Hope this helps. Good day

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