I have a pair of the home built cornwalls with the vertical horn design and B cross overs with sonic caps. I have never had an issue with then being to boomy. I did have them in a basement once up on the fireplace hearth. They sounded ok there, but to me, they sounded there best in my small 11x22 carpeted living room IMO. Run off a EL34 amp with KT77's. Would that be a common occurance with vertical horns? Glad to here your CW3's are sounding nice. Just curious, are those real wood veneer now days?