Matching Denon X3700H with a new to me amplifier

Garet Jax said:

Hello all,

I bought one of the Wyred 4 Sound Multi Channel Amplifier used from the classifieds. It is a 7 X 500W configuration.

My receiver is a Denon X3700H. I intended to use the pre-outs on it to connect to the amplifier. I have been reading about matching the pre-out voltage, but can't find the pre-out voltage for either the amp or the AVR. Is it called something else?

1) Do I really need to worry about the pre-out voltage? If I don't can I damage the AVR, the amplifier or the speakers?
2) Are there other factors I need to consider to "match" the AVR and the amplifier?

Thanks a bunch.

Click to expand...

In preamp only mode you'll get about 3.4V maximum with good measurements from all preamp outputs from the H3700H.

In left and right channel preamp mode you'll get 3.4V maximum with good measurements from the L and R preamp outputs. 1.4V maximum with good measurements from the remainder of the preamp channels.

When all power amplifier channels are in use you'll get 1.4V with good measurements from all preamp channels.


Credit: Audio Science Review

I can't find the voltage sensitivity for the Wyred 4 Sound unit. Perhaps someone reading this post has that value.

The preamp output voltage with good performance has to be higher than the maximum power output voltage sensitivity of the Wyred for 4 Sound power amplifier. If the voltage output of the X3700H isn't high enough then the X3700H can't drive the power amplifier cleanly. The X3700H has a high enough preamp voltage output when used in preamp only mode (3.4V) to drive most power amplifiers to full output, but you need to get the voltage sensitivity value for the Wyred 4 Sound amplifier to be sure.