hi,can anybody help me?
is possible and easy,convert an aexposure XXI from 125 volts to 220 volts?
my i do it my self?
thanks at all.
is possible and easy,convert an aexposure XXI from 125 volts to 220 volts?
my i do it my self?
thanks at all.
First all I must tell that the voltages in the transformer and around it are lethal and must be done attention in all operations.
Yes, if It's possible to find a tranformer (toroidal I suppose) with:
- same power (or higher)
- same number of secondaries and same voltages output rated at 230 Vac input (to primary)
- compatible dimensions to the original.
The problem is having these informations.
I council you to contact Exsposure for the 230Vac replacement transformer, I suppose that It's possible to do it.
The direct inspection by tester is problematic because the italian Vac voltage is 230 not 110-120 Vac and connecting the amp to 230 Vac it's very dangerous (be carefull).
A solution can be is finding the schematics or connecting the amp to an AC adaptator from 230Vac to 110 Vac (be carefull to max power rated) and testing the secondaries , before all it's necessary to disconnect the secondaries from rectifier(s).
It's possible to use an sin generator (function generator) for tested but this a secondary way.
Yes, if It's possible to find a tranformer (toroidal I suppose) with:
- same power (or higher)
- same number of secondaries and same voltages output rated at 230 Vac input (to primary)
- compatible dimensions to the original.
The problem is having these informations.
I council you to contact Exsposure for the 230Vac replacement transformer, I suppose that It's possible to do it.
The direct inspection by tester is problematic because the italian Vac voltage is 230 not 110-120 Vac and connecting the amp to 230 Vac it's very dangerous (be carefull).
A solution can be is finding the schematics or connecting the amp to an AC adaptator from 230Vac to 110 Vac (be carefull to max power rated) and testing the secondaries , before all it's necessary to disconnect the secondaries from rectifier(s).
It's possible to use an sin generator (function generator) for tested but this a secondary way.
is not allowed to move 4 wires inside:from serial to parallel?
many tranformer are both for 125/220 just rewired in this way.
many tranformer are both for 125/220 just rewired in this way.
Many but not all, several transformers are made for one AC voltage supply only and they have one primary only.
I think if amp's transformer had two primaries then exsposure would have placed an AC selector inside amp.
However, I think this transformer probabily is a standard type and It's possible (but this it's not probabily) that on it there is a label with secondaries voltages and rated power.
For the forum's rules I must tell you that you can operate inside amp only if you are competent in electronics. Prudence always.
I think if amp's transformer had two primaries then exsposure would have placed an AC selector inside amp.
However, I think this transformer probabily is a standard type and It's possible (but this it's not probabily) that on it there is a label with secondaries voltages and rated power.
For the forum's rules I must tell you that you can operate inside amp only if you are competent in electronics. Prudence always.
i'm watching an ebay item,and the seller don't send me the photos,so...
many thanks anyway for your interest.
many thanks anyway for your interest.
Hi,
Exposure is made in the EC and either has a 230Vac or a dual 115/230Vac transformer fitted as standard.
It is very easy (if it's not a Krell) to change voltage to suit any country.
Exposure is made in the EC and either has a 230Vac or a dual 115/230Vac transformer fitted as standard.
It is very easy (if it's not a Krell) to change voltage to suit any country.
Now I have find some preamp's photos and this preamp is an120/240 ac model , AndrewT you are right ,
If you want I can help I think , now I go just to listen my new preamp that I have designed (we are speaking about preamps....).
See you later guys.
See you later guys.
ops......... the internal is too large for this forum (maximum size around 100kbyte) for the moment i can send it only by email , for the forum i must resize it
150 by 200 is too small, with no detail.ppa said:
You are allowed <1000 by <1000 pixels and after compression the file must be <100kB.
Try again.
You could use an external stepdown transformer.It isn`t that expensive.
It is 120VAC dual mono construction preamp.Theoreticly,you could put primaries of both transformers in series(instead of parallel) and get 115 VAC@each primary coil.Those transformers are the same and are under the same loads.
Good luck!
It is 120VAC dual mono construction preamp.Theoreticly,you could put primaries of both transformers in series(instead of parallel) and get 115 VAC@each primary coil.Those transformers are the same and are under the same loads.
Good luck!
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