FS: Rothwell MCX SUT(step up transformer

[AJSki2fly]

This lovely Rothwell MCX SUT is available due to changes to my system. I have owned it for about 2 years and it is a superb SUT giving very neutral results, I used it in conjunction with a LFD phono pre-amp and worked perfectly.

The unit is unmarked and fully working. I am not sure if I have the original packaging but it will be carefully packed in a suitable box.

Specifications

turns ratio 1:10
voltage gain 20dB (x10)
core material cobalt based uncut amorphous strip
input impedance* 100 ohms
optimum load impedance** 47k + 150pF
bandwidth 8Hz - 75kHz (+0/-3dB)
cartridge compatibility (o/p) 0.35mV - 0.9mV
cartridge compatibility (imp.) internal impedance <20 ohms
dimensions 60 x 155 x 92 mm
weight 580g

*This is the load presented to the cartridge.
**This is the optimum load for the transformer, ie the input impedance of the phonostage that the MC1 feeds into

http://www.rothwellaudioproducts.co.uk/html/sut.html

These sell for £485 new, I am asking £300 plus postage in the UK, which will have to be insured and signed for.

https://i.postimg.cc/mDZqQ9z1/561-B8-DED-F441-4572-ADD9-F47-B03869147.jpg

https://i.postimg.cc/rs3PXYh5/CBA69374-99-DA-4869-B52-A-FC346-BB500-B9.jpg

https://i.postimg.cc/zBdQpfKt/FB314694-7-B4-A-4-C91-A960-1-B83-E9219-FAD.jpg

https://i.postimg.cc/0jbB4qC8/9941-B560-FAC9-4073-B728-08545-F11494-E.jpg

[petrat]

A quality SUT for relatively little money.
GLWS

[AJSki2fly]

A quality SUT for relatively little money.
GLWS

Thanks Peter, these really are superb SUT's, work very well with a range of MC cartridges and a good way of keeping a good existing MM phono stage and getting into MC. The MCX is a good choice for modern MC cartridges.

from Rothwell :-

"Rothwell Transformers
The MC1 has a step-up ratio of 1:12.9, the MCX has a step-up ratio of 1:10 and the MCL has a step-up ratio of 1:20. In all cases the input impedance is 100 ohms. This is because loading is used on the primary side of the transformer as well as the secondary side to maintain a 100 ohm load. The extra load makes the input impedance compatible with a very wide range of cartridges and has the added benefit of smoothing out any non-linearities in the input impedance caused by the real-world practicalities of transformer design such as non-zero leakage inductance and interwinding capacitance.
The secondary windings of both the MC1 and MCL have optimised loading networks so that when fed into a 47k moving magnet phonostage the bandwidth and voltage gain are maximised and ringing eliminated. Do not use any additional loading on the secondary of the MC1, MCX or MCL in order to try to improve cartridge loading or cartridge matching as prescribed by dubious advice found on the internet.
The MCX and MCL are both premium quality devices with very quality core materials and sophisticated winding techniques giving there transformers a wide bandwidth and good hum rejection."

[AJSki2fly]

Reduced to £280 including postage in the UK, which will be tracked, insured and signed for. This is a bargain at this price.

[AJSki2fly]

Reduced to £280 including postage in the UK, which will be tracked, insured and signed for. This is a bargain at this price.

Sunday bump

[AJSki2fly]

Friday bump, only asking £280 including postage for this excellent SUT

[AJSki2fly]

I am very surprised no-one has not snapped this up, as I said it is an extremely good SUT

Before I post on Ebay next week I will offer this to AoS members for £250 plus postage.

[AJSki2fly]

OK this is on Ebay now, but if you are quick I will let it go to a AoS member for £230 including postage, that is my final offer. This is extremely cheap for such a lovely Moving Coil SUT.

[AJSki2fly]

SOLD