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ElectroVoice Interface I Series II Restoration

Connor G

Ear conditioned
Subscriber
Hey guys!
A few months ago, I visited my local Goodwill and a generic looking pair of speakers caught my eyes -- At second glance...
They were thrown onto the floor haphazardly, along with most of the furniture in the store and a few other generic speakers. These speakers, however, weren't so generic; albeit they do look like they're straight out of a 1980's Sear's showroom...

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They had the familiar blue "EV" logo on the back, along with some fairly decent, for 80's standards, binding posts. The price tag read $12.99. I peeled the grilles off and was greeted with foam rot... Times two!
The usual foam surround rot had occurred with the mid bass driver, and also had taken its toll on the tweeter diffraction foam as well; much like that of the older JBL speakers.

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I threw them into my cart and walked around the store a little bit more.
I was looking through the electronics shelves when I came across another familiar name, this time "Integra", on a Tape deck. It was an Onkyo Integra TA-2600 deck, with a $10.00 price tag on it. I took a gamble and threw it into my cart too because I hadn't had a decent tape deck at the time. I digress.

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When I got them home, I quickly realised that the cabinets were covered in a super sticky, almost glue like slime, which stuck to my hands after handling them. I was able to abate the cabinets of it with some multi-surface cleaner and some of my magic "Scott's Liquid Gold" wood polish and cleaner.

I went online and ordered some new foam surrounds for the woofers and I was also able to find someone who makes the diffraction foam custom for this particular speaker's tweeters. All in all, I paid about $45 between the tweeter diffraction foam and the foam surrounds for the woofers, plus the $13 for the speakers themselves.

(Link for tweeter foam here: http://reconingspeakers.com/product/ev-replacement-electro-voice-tweeter-foam-lens-70534/)

When I got the new foam in, I went to work. I removed the drivers and scraped all of the old foam and glue off of the tweeters and woofers. What surprised me was the size of the magnet for both the woofer and the tweeter... Pretty big if I say so myself.

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Installing the foam onto the woofers and tweeters was extremely easy, and everything turned out flawlessly; I even cleaned the potentiometers for the tweeter adjustments.
I didn't bother to change the cap in the crossover network, but I might in the future.
I'm glad that I was able to save a great pair of speakers from being thrown out, granted no one would have wanted to buy a pair of foam-rotted speakers.
They sound great, with a lot of low end and mid range clarity, plus a pretty decent top end.
Are they as good as my similar EPI Model 100's? No. But they're still really good speakers that can hold their own to a lot of sub $200 speakers made today.

Anyone else have experience with EV Interface I Series II speakers, or any other similar EV speakers for that matter? I'd love to hear your opinions on these guys. I like them a lot.

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Info regarding the tweeter foam borrowed from another forum:

The IF-I is a 2-way speaker--woofer, PR (a "vent") and tweeter.

2-way tweeters are usually compromises if they cross over at a low enough frequency to relieve the woofer from severe beaming. If the tweeter crosses over at, say, 1000Hz, instead of the typical 2-way tweeter x-over of 3khz or so, then the tweeter will have to be large enough to be able to respond down at so low a frequency.

But a large tweeter will itself start to get severely beamy by around 7kHz, and that's no good either. A large tweeter solves the 8" woofer beamy problem, but introduces the tweeter beaming problem.

Yet the mfgr doesn't want the expense, mfg complication, etc. of a 3-way speaker.

What to do?

EV did this: The foam around their 2" (I think) tweeter had a 3/4" circular hole cut in the center. EV claimed that the foam was acoustically transparent at the low end of the tweeter's operating range but became progressively more and more acoustically opaque with increasing frequency. Thus at the very highest frequencies, the tweeter had an effective radiating diameter of only 3/4"--providing very wide dispersion at the top end, but retaining the advantages of a larger tweeter's ability to respond and handle power in the lower frequencies.
 
Those were the very first speakers I ever bought. Purchased them at Big George’s Appliance in Ann Arbor Mi., in 1979. Paired with a Technics Sa-300 receiver and Philips 777 turntable from Highland Appliance in Flint, it was a pretty nice system for a high school sophomore. I loved those speakers until they met their demise at the hands of my brother in law (bone head in law) in the early 90’s. Thanks, your post brought a smile to my face!
 
Those were the very first speakers I ever bought. Purchased them at Big George’s Appliance in Ann Arbor Mi., in 1979. Paired with a Technics Sa-300 receiver and Philips 777 turntable from Highland Appliance in Flint, it was a pretty nice system for a high school sophomore. I loved those speakers until they met their demise at the hands of my brother in law (bone head in law) in the early 90’s. Thanks, your post brought a smile to my face!
I’m glad that I could bring a smile to your face!
Thanks for reading along and commenting!
 
What about the tape deck? That was a good one!
It seems to be a really well built tape deck, and for $10, I couldn’t pass it up!
It’s no Nak, but I bet it can certainly hold it’s own against many other tape decks out there. It’s actually pretty heavy, and all of the buttons and knobs on the front are solid metal. It’s in excellent condition to boot. Thanks for commenting!
 
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