Speakers for small room

we have a couple of unique solutions

the jern w9000 is a cast iron and graphite cabbnet on wall that sounds amazing

theyare heavy but are designed for wall mounting

https://jernspeakers.com/speaker/jern-w9000/

the second are artcoustic these are high performence on walls which look like artwork

https://cdn.shopify.com/s/files/1/0214/9638/products/Cinema-Rooms-078-5-of-6_grande.jpg?v=1366900595

we are a custom instaallation company so we specialize in tricky installations

Dave and Troy

Audio intellect NJ

Lots of companies make slim on-wall speaker options. I haven’t heard many but would suggest choosing an option that extends below 80hz at a minimum because it will make integrating the subwoofer easier. Frequencies below 80hz will be less easily localized to the sub. Many of those super thin on-wall options would leave you with crossing over to the sub way too high. Here are two, but I haven’t heard them and I’m sure there are many others:

Here might be some suggestions: wall speaker at Crutchfield

Appreciate the responses!

My friend has been checking out the links. He also asked me about these:

MartinLogan Motion SLM Center Channel Speaker-Audio Advisor

MartinLogan Motion SLM XL On-Wall/Off-Wall Surround Speaker-Audio Advisor

Would the SLM XL be too big for the 11.5' x 19' room?

The TV will be hanging on one of the 19' walls.

Thanks everyone!

Minimum frequency on those is 110hz and 100hz, respectively. That means your subwoofer will need to be set high enough to avoid missing those 80-110hz frequencies (80hz being a more common low pass setting than what you’d need with these). Make sure the AVR can adjust accordingly and is set to do so. With the crossover that high, you’ll likely have sound that can be localized as coming from the subwoofer instead of just appearing to be from the main speakers. It’s suboptimal (pun intended), but if he likes them enough for other reasons might be a trade off he’s ok with. Personally I’d pick something that goes to 80hz or lower because that’s about the frequency where our ears/brains can’t localize the sound.