MC for Crown SL-2?

[caddisgeek]

Hi All, I've just recently purchased a Crown SL-2 preamp and have noticed that the phono pre has adjustable gain, anyone know if this is suitable for MC carts such as the Denon DL 103?

Cheers
Steve

 

[70salesguy]

From the SL-2 manual :

"Many of today's moving coil cartridges may be used with the Straight Line Two, but only if their output is high enough to drive the input stage of the internal phono preamplifier. If by experimentation the output of a selected cartridge is found to be too low, it may be necessary to make a minor circuit modification to the Straight Line Two phono section, or to use a separate moving coil preamp."


Secondly, I expect to see pictures.

 

[caddisgeek]

Ah yes pictures, I did promise that didn't I. My digital camera is dead, so I'll have to borrow one form work

 

[Blue Shadow]

The phono input will be loaded to 47,000 ohms instead of what most LOMC cartridges are looking for something around 0-100. The level is adjustable and for the DL-103 cartridge with its 0.3mV output and 50dB of gain you will have just under 1V output. If this will drive your amp, you should be fine but you might be on the very high end of the volume control which can add noise.

You can calculate the output levels using a Crown "dB voltage calculator " searching the quoted phrase. But have to delete leading zeros to get the numbers to work. There are other calculators out there.

 

[Blue Shadow]

I cannot believe we are still waiting for pictures that cg promised. Updates to come.

 

[KentTeffeteller]

Get a SUT or LOMC capable phono stage for it.

 

[Blue Shadow]

Well I can follow up my comment about the pictures with a picture. I did not know this device existed. It is a Crown SL2 Moving Coil Phono Module. This item has a pair of transformers and associated parts enclosed completely in a metal box. Made similar to the other Crown phono modules for mounting near a turntable, this one will raise the level of the signal to allow use with a standard MM phono input such as the module used with the SL2 preamp.

Anyone know anything about these? Anyone seen one or seen any information about them back in the day?

 

[LAB3]

I too am interested in this SL2 module for MC....anyone Thinking about selling all my Hafler and going Crown SL2 and PL3 amp. I have a Denon DL103R and a borrowed Denon AU-300LC MC SUT that sound really good together with my Hafler DH-110 pre/amp.