New Heathkit AS101 owner - First post.

[gearfreak]

* Yeah, those amps were a bit out of my range. hah.

The entire horn opening IS the "bass port".

Not uncommon with altec. The A7 uses this arrangement when the horn is stored inside the cab.

If you'll be taking measurements while experimenting, you might do so in it's natural state, as a baseline. Or just mod one at a time and a/b.

...yup, the drivers will stick themselves to the baffle. When the goop has run (over time, temp) it can rip pieces of the cork or baffle out. Gentle is good when they are stuck, saves headaches down the road. Gravity is a friend, but you have to be ready to catch or otherwise land ~30lb of woofer.

[alancohen]

* Yeah, those amps were a bit out of my range. hah

Not uncommon with altec. The A7 uses this arrangement when the horn is stored inside the cab.

If you'll be taking measurements while experimenting, you might do so in it's natural state, as a baseline. Or just mod one at a time and a/b.

...yup, the drivers will stick themselves to the baffle. When the goop has run (over time, temp) it can rip pieces of the cork or baffle out. Gentle is good when they are stuck, saves headaches down the road. Gravity is a friend, but you have to be ready to catch or otherwise land ~30lb of woofer.

Mine too...just a little. I'd love to build Bruce's 300b monoblocks, but at (4) 300b tubes per channel and $150ea for cheapies, I might have to wait till I hit the lottery.

So if I wanted to do some measurements, what would you recommend. I've never done anything like this before and I don't have a proper mic. Would my Macbook Air do? What software?

BTW, the drivers released with a little persuasion. Very little. Cork completely intact.

[gearfreak]

So if I wanted to do some measurements, what would you recommend. I've never done anything like this before and I don't have a proper mic.

No software recommendations per se, I am not rigged up for anything beyond the WT3 from PE, which I use to track experiments to the ports in mine via impedance plot. There are experienced members, and threads about that here though.

* Freeware WinISD does have a signal generator build in, very useful. Consider though the capabilities of the sound[card/device] used / have some baseline to check the output against.