Altec 417-8H
A 12-inch AlNiCo musical instrument speaker that Altec built for the stage, not the living room.
Overview
Altec Lansing built the 417-8H as a "musical instrument loudspeaker," a full-range 12-inch driver meant for guitar and bass cabinets rather than hi-fi enclosures. One driver covers everything from the low end of a bass cabinet to the bite of a lead guitar. Altec's own 1976 literature grouped it in the high-powered "H" series, a family of speakers the company positioned for heavy-duty instrument work. The 417-8H was made in the USA, with latter production coming out of Buchanan, Michigan.
The driver ran through two eras, commonly called Series I and Series II. Collectors note that Series II units are considered less desirable among some users, though the fact sheet doesn't say exactly what changed between the two. The core recipe stays the same: a 12-inch cone, an 8-ohm voice coil, and an AlNiCo magnet. That magnet material gives many vintage American speakers their reputation, and original-condition examples have gotten harder to find as AlNiCo prices climbed.
The 417-8H turns up wherever a player needed a speaker that could take a beating and still articulate. It was used in guitar and bass cabinets, including the Randy Marshall cab, and Altec's own documentation shows it installed as stock equipment in amplifiers such as the ODS amp as early as 1979. It earned its following on stages and in rehearsal rooms.
Key Features
12-Inch Full-Range Cone
The 417-8H is a single 12-inch driver with no crossover and no separate high-frequency section. Altec cataloged it as a full-range musical instrument speaker, so the cone handles the entire signal the amplifier sends it: the fundamental of a low E, the harmonics that give a chord its definition, and everything between. A hi-fi woofer only covers the bottom two or three octaves before handing off to a tweeter. A full-range instrument speaker has to balance low-end weight against midrange clarity, and the 417-8H's reputation for "powerful, articulate tone" suggests Altec got that balance right.
AlNiCo Magnet Structure
AlNiCo - aluminum, nickel, cobalt - was the standard magnet material in American speaker manufacturing before ferrite took over on cost grounds. AlNiCo magnets are heavier and more expensive, and they behave differently under load. They compress slightly as the voice coil heats up, which players often describe as a natural compression that flatters overdriven guitar. The 417-8H uses an AlNiCo magnet, and that's a big part of why original examples remain sought after. It's also why the speaker is, by user accounts, very heavy.
8-Ohm Impedance
The 417-8H is rated at 8 ohms, the most common load for guitar and bass amplifiers of the era, so it pairs easily with tube heads that expect an 8-ohm cabinet. That standard impedance is one reason the speaker found its way into so many different cabinets and combos over its production life.
100W RMS Power Handling
According to available documentation, the 417-8H carries a 100W RMS power rating. For a 12-inch instrument speaker of its era, that's a genuine working figure, enough headroom to sit behind a loud tube amp without the cone folding under sustained output. It's not a hi-fi rating, and it shouldn't be pushed. Vintage AlNiCo speakers lose value fast when driven past their limits, and reconing is the usual result.
69 Hz Free-Air Cone Resonance
The 417-8H's nominal free-air cone resonance is listed at 69 Hz. That figure is how low the driver naturally resonates when it's sitting out of any cabinet, and it points to real low-end extension for a 12-inch instrument speaker. That's why it worked in bass cabinets as well as guitar rigs. In a properly tuned enclosure the resonance will shift.
Historical Context
The 417-8H belongs to Altec's high-powered "H" series, which sources suggest was released in the very early 1970s. Altec's 1976 speaker documentation lists the 417-8H II alongside the 418-8H II, 421-8H II, and 425-8H II, all rated at 8 ohms and all built for instrument and sound-reinforcement duty. That same literature shows the 417-8H type driver specified as the low-frequency component in the 1221A Stage Monitor, a two-way system that paired it with a 32A horn and 808 driver. Recording Engineer (October 1976, p.18) described a Neil Diamond touring rig in which the front-fill monitor used two Altec woofers of the same type found in the 1221A — a version of the 417-8H-II that had been optimized for vocal use. The 417-8H wasn't just a guitar speaker; it was Altec's go-to 12-inch for stage monitoring and reinforcement work.
The driver's production life overlapped with a major change at Altec Lansing. The company was acquired by another firm during the years the 417-8H was being built, which marked the end of the original manufacturing era. Collectors use that acquisition as the dividing line between early and late production.
Altec pitched the 417-8H into a market that included the JBL D-120F and the EVM12L, two other American 12-inch instrument speakers that guitarists still argue about today. Its use by players associated with Randy Rhoads and Santana kept it visible long after production ended.
Collectibility & Value
Used 417-8H drivers have sold in the $330 to $425 range per speaker, according to recent listings, though a pair in very good condition has been offered at $350 for the pair. Treat any individual price as a starting point. Original pricing is murkier: records show new prices of $175 and $210, but the context for that discrepancy isn't clear from the available documentation.
Series II units are considered less desirable by some users, which typically shows up as a discount on the used market. Condition matters a lot with these drivers. Recone kits for the 417-8H and the related 417-8C Series II are available, which helps anyone looking at a tired example. A speaker sold as-is for repair should be priced accordingly, and one described as having a supple surround with no wear commands a premium. Users consistently note the weight, and AlNiCo drivers of this size are not cheap to ship.
Because the 417-8H is a working speaker rather than a collector's piece, values tend to track demand from players. Condition and originality drive price more than rarity.
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