[Elecraft] KX3 with external speaker

[Bert]

I use an ANKER Mini and it works perfectly. Great sounding speaker!! I 
believe It's under US $30 on Amazon.
Bert VE3NR



On 2026-02-16 19:50, Henry Pollock - K4TMC via Elecraft wrote:
> I use a SoundMatters FoxL powered speaker driven from the KX3 headphones
> output. It works great with lots of sound to easily fill a room.
> I suspect that other small portable powered speakers with a wired input
> should work well.
>
> 73,
> Henry - K4TMC
>
> On Mon, Feb 16, 2026 at 7:42 PM Walter Underwood via Elecraft <
> elecraft at mailman.qth.net> wrote:
>
>> The KX3 “PHONES” jack is for headphones. It produces 100 mW. —wunder, K6WRU
>>
>>> On Feb 16, 2026, at 3:44 PM, Jim Brown via Elecraft <
>> elecraft at mailman.qth.net> wrote:
>>> On 2/16/2026 3:15 PM, Phil Hystad via Elecraft wrote:
>>>> Can someone give pointers on this?
>>> The K3, K3S, and K4 have separate audio power amplifiers for headphones
>> and speakers, each with their own individual output jacks. I haven't
>> studied the schematic, but I suspect that the KX3 has only the amplifiers
>> for headphones. Speakers require considerably more power.
>>> The headphone output could probably drive a powered speaker (that is,
>> one with its own built-in amplifier), but powered speakers are notoriously
>> bad for RFI, both generating noise and being susceptible to nearby
>> transmitters, so are unlikely to be a solution.
>>> 73, Jim K9YC
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