Good quality, reasonably priced, loud PA speaker
We use pair of EON610s as a vocal PA in a 5000 sq. ft. loft with 24 ft ceilings, and they do an excellent job.
The EON speakers have plenty of gain and can be driven by any reasonable line-level or mic level source. There is some broadband amplifier input stage "hiss" audible when the master volume control is all the way up and the channel input controls are set to more then half way up, but the actual noise SPL is less than approximately 35 dB SPL so is only really audible immediately in front of the speakers. At distances of 10 ft. or more, it's not a problem for us and is essentially inaudible.
We use these powered speakers with a multi-channel wireless mic receiver. That mic/receiver system has an approximate 65 dB S/N, and the wireless system sets the noise floor, not the intrinsic noise of the EON610s.
The EON610s have an internal DSP which forms the low and high pass filters before the dual power amps and also includes a peak limiter. The DSP is pre-programmed with (4) pre-set EQ settings: "MAIN", "MONITOR", "SUB" and "SPEECH". The pre-set EQ's are rather mild. There is very little audible difference between the "MAIN" and "MONITOR" settings. The "SUB" setting raises the LF cutoff for use with the EON618S subwoofer, and the "SPEECH" setting changes the LF cut off from about -3dB @ 60 Hz to about -3dB @100 Hz as well as lowering the overall bass above 100 Hz by about 4 dB. The "MONITOR" setting is for use as a floor stage monitor, so is equalized for horizontal use laying on the floor. The "MONITOR" setting does not refer to studio monitor use. These are wide angle PA speakers and are not intended for studio mixing or mastering applications.
The EON610 has (2) XLR/TRS combo inputs that can each independently be set for mic or line level. The mic/line push-button switches are recessed to prevent accidental operation, so you will need a small tool to press those buttons.
The DSP in each EON610 can be reprogrammed via smartphone Bluetooth from a smartphone or iPad by downloading the EON"Connect" App. The App allows overall control of speaker master gain level, independent control of the LF and HF amplifier gain, and also provides a 3-channel parametric EQ with control of center frequency, "Q", and EQ gain/cut. A overall system delay is also programmable via Bluetooth. DSP settings can be stored, copied and pasted to different speakers (up to 4 per smartphone).
As is clearly explained in the JBL documentation (on-line user's guide), the Bluetooth connectivity is strictly for programming. It does not support audio streaming. These are "professional" PA amplified speakers, they are not "consumer" Bluetooth streaming extension speakers. They can be driven by a "mic level" signal, a -10dBV unbalanced "consumer" line level signal or a +4dBu balanced "Pro" analog line-level signal. The balanced input Z is an easy to drive 20k ohms.
The degree of programmability of the DSP is extensive, and if you're not careful it's easy to make these speakers sound terrible. As is usually the case with most EQs, "less is more". A word to the wise: If you do succeed in really screwing up the EON610 sound, JBL does provide a quick fix. Simply hold down the "EQ+" button and then press the Bluetooth "BOOT" button. Wait until all of the rear panel LEDs blink. That should erase any EQs that you've generated and stored, and restore the EON to the factory presets.
Finally, some specs that my be of use:
Frequency response ("MAIN" EQ Setting) = 52 Hz to 20kHz @ -10 dB
Frequency response ("MAIN" EQ Setting) = 60 Hz to 20kHz @ -3 dB
Bass rolloff -25 dB @ 40 Hz
Directivity Horizontal approximately 110 deg.
Max SPL (pink noise "A" weighted" is 124dB SPL @ 1 M.
Amplifier power (Dual Class-D amps)
LF: 700 watts peak, 350watts continuous
HF: 300watts peak, 150watts continuous
Factory set DSP crossover 1.8kHz
Max input level (line) +14dBu
Max input level (mic) -4dBu
No phantom power on the XLR mic input. If you will be using a phantom-powered microphone, an external PP supply is necessary.
Input Z = 20k (balanced)
There is a small, rear-panel" limiter (or clip) LED that flashes if the LF amp reaches full power.
If that LED flashes, the "Master Volume" control should be turned down.
Actual weight (no packaging) = 11.79 kg (26 lbs)
AC line power 115 VAC OR 230 VAC via a recessed selector switch. These are not "auto-switching". If set to 115 V, they should NEVER be connected to a Euro 230 Volt power main. At full (music) power, the average line power consumption can exceed 450 watts, so a pair of EON610s should be used with a power line that can provide a minimum of 10 amps (North America). If a power extension cord is needed, it should have have a minimum conductor size of 16Ga.