----- Clockwise from left. Interface: 1.2,3, B Series II, D, C. A Series II.
While everyone else struggles with a first generation of vented speakers, Electro-Voice introduces the second.
No one should compromise on speakers. But until recently you've had no choice. Acoustic suspension speakers? They're large and inefficient. Or, there are vented speakers which give you efficiency but lack really deep bass. And vented speakers have been one-of-a-kind creations. Because no one knew how to design them scientifically. So performance was all over the map.
But in 1973 E-V made a breakthrough with our vented, equalized Interface: A. The first speaker created from the scientific theories of A.N. Thiele. He showed the proper way to design a vented system. The Interface: A we created seemed to defy the laws of physics. It not only had high efficiency, but outstanding low bass and significantly reduced distortion.
Ever since then competitors have been knocking themselves out trying to develop their own Thiele designs. Meanwhile, we've been improving on the original. And now we're introducing the second generation of Interface speaker systems. They're four years ahead of any other speaker, just like the original A was.
All seven of the new Interface systems give you exceptional bass performance. Our most expensive system goes down to 28 Hz (-3 dB).
Our speakers are four to ten times more efficient than acoustic suspension speakers, which is like getting an amplifier with four to ten times as much power.
All our speakers have exceptionally high output ability. And our finest speaker can reproduce an average sound pressure level of 115 dB in a typical listening room--the level of rock concerts.
We also care about overall accuracy. There's not only deep bass, but well dispersed, clear highs to provide uniform total acoustic power output.
And our new speakers give you a choice, because they're priced from $100 to $750. So there's an Interface speaker for every budget.
To get more information, write for our free 16 page color brochure.
Interface speaker systems. They're a generation ahead of any other speaker you can buy.
Interface
A generation ahead.
Electro-Voice, EV---a gulan company.
600 Cecil Street, Dept. HE. Buchanan, Michigan, 49107, USA.
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(High Fidelity, Nov. 1977)
Also see:
Marantz Model 2500 stereo receiver