mikebse2a3

Having more power available than a system requires will not damage a loudspeaker in itself but caution is very important that you don't run the loudspeaker system above it's max SPL capabilities as well as very cautious that no accidental transient impulses or hum (for example a bad interconnect connection or accidental drop of a turntable tonearm when playing records) could lead to loudspeaker damage. As far as damaging your speakers my opinion is your ears will give out due to extremely high SPL before your likely to overpower the speakers. I have no first hand experience with these amplifiers or the buffer options so with that understanding based on the information I've read and posted previously looking at the gain options of 7db vs 14db and input impedances values and source impedance requirements of the NC1200 and NC2000 (which doesn't specify buffered vs unbuffered on some specs) it is my opinion that one of the buffer options would be beneficial for gain options and will give better compatibility with your current Outlaw Preamp or future source components you might choose in the future. Note: The Outlaw Preamp doesn't list its output impedance or specify if the voltages are balanced or unbalanced in the information I posted earlier for it so you might want to contact them for more specific information but regardless the Input Buffer options for the HYPEX NC amps should help if the Outlaw has a higher than 100 ohm output impedance. miketn

VTV Hypex NC2000 information

For reference I’m posting some gathered information: VTV Hypex NC1200 information

If you can provide links to what exactly you are looking at then maybe we can be of some help once we know exactly what you would be dealing with. A buffer can be very beneficial in situations where the output characteristics of the preamp can’t meet the demands of the amplifiers input characteristics. Example: If the preamp has a high output impedance and the amplifiers input impedance is low relative to each other then issues of current delivery and drive voltage levels available could lead to the amplifiers input being under driven and thus less than full power output availability.

It’s frustrating when manufacturers aren’t clear with their specifications.. The manual list output at 4v and 9v max but doesn’t specify if its rms or if this is RCA output or XLR output. You might want to contact Outlaw to clarify what it’s capable of unless you have better information on the Outlaw.

I’m assuming your preamp is driving an Active DSP Crossover for the Jubilee and if so then your preamp only needs to be able to drive the Active DSP Crossover inputs to full signal level. miketn Edit: I believe it’s important for owners of high efficiency loudspeakers to understand that often when using high wattage amplifiers (and especially if they have high sensitivity inputs) they often run into an issue of to much signal gain resulting in volume controls being limited to being able to barely turn them up before the listening SPL level becomes to loud and also there is often a high system noise floor level (hiss and hum) which is annoying even at typical listening distances. If amplifiers have input sensitivity level controls its much easier to implement them in a system especially if the system is driving high efficiency loudspeakers...

Can you post a picture or link to the spec sheet you have...? Keep in mind these recommendations are based on 5000 cubic ft spaces and the typical home listening spaces would IMO typically require less than 200w. Heck the most I’ve ever seen on my Jubilee is 80w and that was just for momentary fun 😄.. miketn

No the amplifier will only put out the wattage you ask for based on your max listening levels desired. Now the nc2000 is capable of delivering more wattage than the Jubilee is designed for so an accidental signal level spike ( ie: accidental interconnect cable connection made or broken while system is on) could result in damage.. If you’re talking peak SPL when limiting your volume to below 100db at a typical home listening distance then you would probably be sending less than 5 watts from your amplifier to the Jubilee. If you haven’t seen Klipsch Spec Sheet this one is from 2017 and you can find the power rates stated in it. miketn

usually a film type. I also like to use fixed bias to eliminate the need for the RK/Bypass Cap.

Very good papers by Nelson Pass about feedback and the complexity of amplifier design choices that some may like to read. Especially about degenerated feedback use and non-use. art_dist_fdbk.pdf art_the_square_law.pdf art_se_classa.pdf miketn

This might help some to understand how the cathode bypass capacitor affects performance of the gain stage whether in a preamp or amplifier output stage.

It affects gain, frequency response, distortion reduces degenerative/local negative feedback.

If you tap on the pictures they display normally.

For those concerned about capacitors in amplifiers many SET amplifiers using a bias resistor in series with the filament also have capacitor/capacitors bypassing the resistor which the audio signals also pass through. miketn

Or the system integration and room acoustics need attention and in some situations EQ used wisely is appropriate IMHO. miketn