Ortofon Red/Pro-ject Carbon Debut combination; rolled off hi-frequencies. Solutions?

2M Red is an excellent entry level cartridge. I had several of them and they did not lack detail. When I hear "lack of detail" the first thing that comes to mind is VTA.

Make sure your VTA is set correctly. With tracking force set at 1.8g (and verified with a gauge), set the arm down on an average thickness record and make sure the tonearm tube is parallel to the record's surface.

Sometimes this may may be hard to see. You can take cardstock paper, slightly narrower than the white line drawn in the center of your arm tube. Draw thin lines spread 1mm apart using a sharp pencil and ruller. Then gently and flatly place this piece of paper on the record's surface and prop it against the tonearm. 

Parallel should give you the best detail and bass and have an SRA of 90-92 degrees. Tonearm's tail too far down will result in muddy thick sound. Tail too far up can sound bright and sibilant. 

I don't believe your turntable has an easy VTA adjustment, so you'll have to get creative with shims, etc. 

I started out with the Pro-ject Debut Carbon and Ortofon Red.  It was ok, but not great.

Things to do -

1.  replace the original mat with a rubber mat.  I use the ones from the Technics 1200 series available from KAB USA
2.  change out the stylus to the one from the Ortofon blue
3.  change cartridges altogether.  The Shelter 201 is excellent. 

The pre-amp from the MF 3.2 is good.  No need to change.

This will make things appreciably better.  

Unfortunately, if you really get into records, you will find yourself upgrading the TT.   

Rich

@morbius2130aol

The capacitance of the inboard phono stage of the A3.2 is non adjustable and fixed at 47k Ohms.

This is load resistance set at 47k Ohm, but you can change it by replacing restistors if you want to upgrade for very little cost (of the actual vishay 100k Ohm resistors). It’s a big upgrade for ANY MM phono stage.

The capacitance set up by cables. I hope your setting is not totally off. You can play with everything like VTA, MAT, Capasistance, Tracking force, but i bet you will not hear any difference in a mediocre system. The more inportant is the cartridge!

Change the cartridge and you will change everything. If you don’t like the sound of your cartridge then it’s not "your cartridge". I don’t like 2M series of Ortofon carts, but some people like them for some reason. But do not buy another mediocre cheap modern mm cartridge, buy something good and much better. This is how it works. Cartridges are very different. When it comes to MM cartridges it is worth to read this thread. The favorite cartridges for many are not the today’s made MM, but those great MM from the old days of analog (70s/80s).

People who claims they are able to hear 0,15g difference in tracking force or a minor difference in mats on this particular turntable must have a "golder ears". I do not belongs to the people with "golden ears" (probably), but i have a dosen of vintage MM cartridges and they are making a huge difference in any system, even in the cheapest system with average headphones or in high-end system. Cartridge is the most important.

This Ortofon is easy to sell used, you will find a better cartridge for sure. 

Good advice regarding upgrading the cartridge and proper VTA. After that, for improved sonics is to add some aftermarket footers or cones. Using vibration draining or absorbion footers will open up the sound. Better imaging and more detail in the bottom-end.

@reubent

Cable - I replace the stock interconnect cable with an Audio Sensibility Impact SE phono cable. Immediately better.....

I compared this cable with the Belkin I suggested above. The Belkin blows it away with far greater treble. If you or the OP buy the Belkin I linked to and try it and don’t think it works, I will buy it from you. No relationship with seller.