Help with Eventide 949

[NYMo]

Hi there,

Just picked up an old 949 from states and was wondering about power (which I know next to nothing about !)

I was under the impression that eventides were dual voltage..but it definitely says 115v on the back serial plate.
The slo blo in the back is rated at 8/10 and says 250v ??
On the back panel it recommends 110 v 1/2 amp or 220v 3/8 amp.

Anybody know definitively whether they are dual voltage ??

What does 8/10 on the slo blo mean ??

cheers
N
Y
M
O

[Howard Jones]

This unit will not be "dual voltage" by just plugging 240v into it... in other words, DO NOT plug it into 240v until you have this sorted...

Forget about the fuse rating - FOR NOW - as this is not too relevant until you get the voltage situation sorted out. If this model can be run at 240v, I would strongly suggest that you throw out the fuse in it and replace it with the one recommended by Eventide i.e. apparently 3/8A 240V slow blow (this will be marked something like T375mA or, more likely, T400mA. The T stands for 'time delay' aka slow blow).

Older units, unlike more modern devices that can operate from a wide range of mains voltages automatically, may or may not be able to operate from 240V. If your 949 can, it will at least require intervention on your part to make it happen.

Power transformers can be wound for 110/120V input, 220/230V input, or both (we are talking American here). Dual operation (this does not mean, at the same time) is achieved by having at least 2 sets of windings on the primary (input) side of the transformer. For 220V operation, the 2 sets of windings are connected in series. For 110V operation, the same 2 sets are connected in parallel. Therefore, intervention is required by the user to alter from parallel to series connection, or vice versa.

This change can be effected in several possible ways:

[1] A removable piece that is part of the fuseholder receptacle - this is removed and re-inserted with the correct voltage facing an imprinted triangle. It sounds like you do not have this.

[2] An internal jumper that achieves the same thing.

[3] A hardware alteration such as moving a soldered wire from one place to another.

You need to establish exactly what your machine requires. Please ring Syntec on 02-9910-6700 and ask to speak to someone in their service department. They can either talk you through this on the phone or sell you a manual so that you can figure things out for yourself.

In the meantime, please DO NOT plug this in to 240V. Please DO NOT do anything at all to this machine that involves mains power unless you have a thorough understanding of the dangers involved.

[NYMo]

Thanks Howard,

[1] A removable piece that is part of the fuseholder receptacle - this is removed and re-inserted with the correct voltage facing an imprinted triangle. It sounds like you do not have this.

I managed to find an online manual..and what you said above is the case.
There IS a switchable board.

There is a little circuit board that has to be turned around that will work at 240v and then I just change the fuse.

The fuse holder has a sliding bit of plastic over it..but until i can remove that I will not be going anywhere !

Once again Howard, thanx for your time !
[/quote]

[NYMo]

Luckily I had a 110v step down converter so I could at least patch it in and see if it works( another Ebay scare !!)

What an unbelievable box !!

No wonder these things were so popular ! (as he sinks into his 70's electro dreams !)