Tube Rolling

[Roscoe Primrose]

Break them in for 50 hours or more. They'll go through some changes.

[chris1973]

Hey Roscoe, You have to remember: I'm using 7 inch woofers, not 18 inch woofers. I'm no expert but I don't think my transformers are going to have problem moving a 7 inch woofer 1 or 2 millimeters.

An 18" woofer isn't, necessarily, any harder (or easier) to move/control than a 7" woofer.....

Roscoe

Don't you have to fill that huge 3" voice coil with current?

Isn't that what a transformer does? The more current you need the bigger the transformer has to be?

Of course all this just shows why I'm no expert, but isn't any of it common sense?

Bottom line is that I think the amp is ok. I try not to ask it for too much! It doesn't outperform my other amp, but it does do a lot of stuff I like!

If I start building anything other than small, simple 2-ways, I'll make sure to get your advice about how to drive them!

Thanks,

Chris

[tomp]

If you are going to be at Roscoe's on Sunday I'll go throught the details of how a dynamic driver works and what the different parameters mean.

Tom

[chris1973]

If you are going to be at Roscoe's on Sunday I'll go throught the details of how a dynamic driver works and what the different parameters mean.

Tom

Thanks Tom,

I know a lot about speakers (cabinets mostly) from trial and error, but I'm still sort of a novice regarding technical details.

That sounds interesting! I'll see if I can make it.

Chris

[chris1973]

Just FYI, if anyone is still paying attention to my tube adventure: I have comments after several more hours of audition.

I have some criticisms now, rather "a" criticism, but after getting through a lot more of my favorite recordings, I'm finding that the Midbass is a little bit thin with these tubes. It seems like the price you pay for a little bit of extended Low Bass and a little bit of increased intelligibility in the Midrange/Highs, is that the midbass gets a little thinner. It's kind of like when you stretch a rubber band out in both directions, and the mass in the center suddenly gets a lot smaller/thinner. I find this happens a lot with Cables too. Also, Fuses, and Speakers/Cabinets, although Speakers might be a little bit more complex phenomenon.

If anyone has had a similar experience, let me know!

[chris1973]

I wrote an extensive reply to this. But couldn't post it because I had to take a phone call from a dying friend. I came back to tweak it and post it, but the site logged me off. When it redirected me to log in again, my post was lost.

Sorry, that was too much work to lose. I'm done here.

hey Stuart, Sorry about your friend!

Did your post have anything in it relevant to the thread since you tried to post it till now?

[chris1973]

I'm with Stuart...wrote a LONG detailed response and got timed out while writing.

What's up with that?

I'm going back into forum retirement.

Same with you Rob,

Sorry about your problem, but If you had something you wanted to say, then I want to hear it!

[Stuart Polansky]

I had lots relevant to say. At this point, I'd rather chat by phone. Tomorrow evening is good if you are available. (410) 919-8750