Need advice: Turntable Output Voltage

Hello,

I am getting into vinyl and I need some help with my current stereo system, mostly with understanding the specs.

I have a Yahama RX-V1600 AV Receiver with a built-in phono pre-amp. The Input Sensitivity for the PHONO stage in the Yamaha is 3.5mV/47kOhms. The maximum input is 60mV or more, according to the user manual. I hooked up a Technics SL-QD33 turntable to the receiver. The Technics has an output voltage of 2.5mV at 1 kHz, with a recommended load impedence of 47kOhm~100kOhms. I am using a Grado Black cartridge with 5mV output, I believe.

Anyways, the turntable playback is rather quiet. I literally have to crank it up to get to reasonable listening levels. This may be a total noob question, but is the Technics output too low for the Yamaha receiver's phono stage?

I understand Phono is typically quieter than digital sources (for reasons we do not need to go into), but what do I need to do to get this analog system thumping? I do not think the Yamaha's phono pre-amp is faulty. I have hooked up an external Cambridge Audio phono pre-amp to the system as well, and it is still pretty quiet.

I was thinking about upping the "volume trim" on the Phono input by 6 db to see if this pumps up the volume some, although it may just make it even out relative to other input sources. Also, I am concerned that the volume trim may just amplify low-level noise/hiss.

Everything in the system is connected correctly and the turntable is grounded to the receiver.

Any advice would be much appreciated.

Thanks.