Altec A7

[JBLROCKS]

Hello

I have a question...I am seriously thinking of building a pair of Altec A7's (VOTT early 60's) BUT they are HUGE!!
I was wondering if anyone knew if I could build them a bit smaller (Perhaps about a foot shorter) without serious changes in sound quality. This box is nearly 16 C.F.

I was thinking to make it about making 8-10 C.F. and adjusting the port accordingly but leaving the horn dimensions the same.

Will this work?

Thanks

[Ben Clarke]

In general, no, but with Yuris amp it might.

Only if you don't use adapters.

[dancing-dave]

"You can't miniturize a wavelength" - Rudy Bozak

No way you can change the cabinet size and expect the same results. Only way to preserve any of the sound is to ensure the total inner volume is preserved.

[JBLROCKS]

Only if you don't use adapters.

Adapters?

[grumpy]

unless you want to get pulled into an ugly flame war.

You can do whatever you want with the A7 design, but then it won't
sound like an A7 (shorter horn, reduced cab vol might lose bass & cause
more pronounced mids due to a loss of bottom-end efficiency and horn geometry
changes).
Biamp and eq your way out of it if you've the time & resources

[Mr. Widget]

I think with the appropriate adapters even a stock A-7 could be made to sound good.


Widget

[Art J.]

Someone built a mini a7. Take a look

http://www.voiceofthetheatre.com/mini_a7.htm

[Mr. Widget]

And they are damned cute too!


Widget

[duaneage]

Unless you work for Bose you cannot defeat physics andthe A7s are a classic example of that. Takes air to make sound move.


I heard a pair in a jazz club in Hokaido Japan years ago. Simply incredible.

[spkrman57]

that goes for engines and speakers!!!

Ron

[JBLROCKS]

I think with the appropriate adapters even a stock A-7 could be made to sound good.


Widget

again, adapters? :dont-know

[Mr. Widget]

It was a bad joke.
I was digging at the flame war between Yuri and.... and I was poking fun at the fact that the Altec A-7 really needs equalization and other tweaks to make it listenable. There are those that like them stock, but then, well, um, er


Widget

[JBLROCKS]

It was a bad joke.
I was digging at the flame war between Yuri and.... and I was poking fun at the fact that the Altec A-7 really needs equalization and other tweaks to make it listenable. There are those that like them stock, but then, well, um, er


Widget

Thanks Widget

Sinve you say this do you think it is worth the time/labor to build these or is there something better?

[Mr. Widget]

Thanks Widget

Sinve you say this do you think it is worth the time/labor to build these or is there something better?

I may not be the person to ask that question. If I had more space and someone offered me a pair of A-7s I would take them for the nostalgia. Would I spend time to build a set for myself? No way in hell.

What is better? Is a battleship better than a ski boat? What is your goal?

Widget

[Cyclotronguy]

A7's were designed for theater use and forced into other roles where the theater strengths were weakness.

The typical theater of the day had very low amplifier power and projection screens that were not all that transparent to vocal frequencies. Altec A7, 828, 825 had a bumped response that worked well in these settings. Give them a large domestic room, some eq. and adjust your expectations such that 40 Hz bass is "good-enough" and they can be stellar.



Cyclotronguy