Help with Dunlavy SC-IV signature

@cerberus79 This is hard to believe, but I trust you have done your home work. Dunlavy speakers are anything but bright. May I ask you what kind of source material you used to find out these speakers sounded "bright"? Also, these are very efficient speakers with sensitivity of 92 dB. Have you tried this with a tube amp?

Before you try to work on the crossover or any other parts, I would try to see if the problem remains with a tube amp. They have first order crossovers and drivers are designed to handle "leakage." If the drivers are changed, that may explain this problem. Also try moving the speakers to short-wall if these are currently placed  along the long-wall. 

I used both Qobutz and CD sources. I played Jazz, Blues and Rock. The results were the same regardless of music or pre and amp. I have not tried tubes. My tube amp is a Cary 300SEI F1 and it only puts out 13 watts per channel.

Dunlavys are 92db but were always better driven with good powerful solid state.

Requirement 100w in 4ohms min. Their resistance varies from 3-7,5ohms.

Needs too many tubes if going for good volume. 

@petg60 I agree with you about running these with a good SS amp due to impedance dropping to around 3 Ohms. All of my auditions with these speakers were done with SS amps. I think "problem" is with the speaker, not his electronics up stream.

I have visited Dunlavy Labs here in Colorado Springs many years ago. They are no longer in business and John Dunlavy has passed away. May he Rest in Peace! His speakers are used as references for mastering among many other applications. I finally settled with Thiel speakers and I could have easily accepted Dunlavy speakers too. Both use first-order x-overs and true to the source material. 

May not be a bad idea to contact Duntech and find out if they have any suggestions.

It appears from my research that these speakers do not have a common crossover. The crossovers were voiced to the pair, with that in mind I am going to remove but not disassemble the crossover and make a schematic of it. I am also going to get some speaker analysis software and measure their output. It was suggested to me that a simple resistor change in the Mid and Tweeter section might solve the issue.