JBL Northridge E30 2-Way 6″ Bookshelf Speakers – Bi-Wireable
$195.00
Sixteen and a half pounds each, which is where the 50 Hz comes from — this is a full-size bookshelf, not a satellite in a bigger box. The 6-inch PolyPlas woofer is viscous polymer over a corrugated cellulose base, crossed at 4 kHz to a three-quarter-inch titanium-laminate dome through JBL’s Straight-Line Signal Path network. Two sets of gold-plated 5-way posts, so bi-wireable. Very good condition.
1 in stock
JBL Northridge E30 — Bi-Wireable, PolyPlas Woofer, 16.5 lb Cabinet
JBL Northridge E30 2-Way 6-Inch Bookshelf Speakers – Dual Sets of Gold-Plated 5-Way Binding Posts, Bi-Wireable, Magnetically Shielded, Very Good Condition
Substantial, well-made bookshelf speakers from JBL’s Northridge E Series, with the easy dynamic confidence the brand is known for — and a connection panel well above what this class usually offers.
At 16.5 lbs each these are a genuine mid-size bookshelf rather than a small satellite pretending to be one, and the extra cabinet volume is exactly where the low end comes from. They reach down to 50Hz, which is deeper than most speakers of this footprint manage, and they do it without the thin, strained quality that afflicts smaller boxes asked to work hard.
The 6-inch woofer uses JBL’s patented PolyPlas cone — a layer of viscous polymer applied over a corrugated cellulose base, which gives the stiffness needed for clean bass along with the internal damping that keeps the midrange free of ringing. Above it sits a three-quarter-inch titanium-laminate dome tweeter, crossing over at 4kHz.
Between them is JBL’s Straight-Line Signal Path network, a deliberately simple crossover built on the principle that the less circuitry the signal passes through, the more of it survives to the drivers. The cabinet is ported with JBL’s FreeFlow flared design, which reduces the chuffing that plagues straight-cut ports when the bass gets demanding.
Each speaker carries dual sets of gold-plated five-way binding posts — four posts per cabinet rather than two — joined by removable jumpers. That is a genuine bi-wire and bi-amp capable connection panel, and it is not something you often find at this level. Run them conventionally today with the jumpers in place, and the option to bi-wire or bi-amp is waiting whenever you want it, with no need to change speakers to get there. The posts accept bare wire, spades or bananas.
There is real headroom too. Rated at 70 watts continuous, they will absorb 280-watt peaks without complaint, and they will take up to 125 watts of amplifier. At 88dB sensitivity and a straightforward 8-ohm load they are undemanding to drive, and any competent receiver will do them justice.
Both drivers are magnetically shielded, which makes these an easy choice near a television or other sensitive equipment.
Condition
Cosmetically this pair is in very good condition, with clean cabinets and grilles in good order.
They have been thoroughly inspected and tested to confirm full functionality.
Features: Dual sets of gold-plated 5-way binding posts — bi-wire and bi-amp capable Patented PolyPlas 6-inch woofer — polymer over corrugated cellulose 3/4-inch titanium-laminate dome tweeter Straight-Line Signal Path crossover network — minimal circuitry in the signal path FreeFlow flared port for reduced port noise Both drivers magnetically shielded Substantial 16.5 lb cabinet per speaker
JBL Northridge E30 Specifications
- Model: Northridge E30
- Configuration: 2-way ported bookshelf
- Woofer: 6″ PolyPlas
- Tweeter: 3/4″ titanium-laminate dome
- Frequency Response: 50Hz – 20kHz (-3dB)
- Crossover Frequency: 4,000Hz
- Sensitivity: 88dB (2.83V/1m)
- Nominal Impedance: 8 ohms
- Power Handling: 70 watts continuous, 280 watts peak
- Maximum Recommended Amplifier Power: 125 watts
- Binding Posts: Dual sets, gold-plated 5-way, bi-wireable with removable jumpers
- Dimensions: (Width x Height x Depth) 8.875 x 15 x 12.5 inches (225 x 381 x 318 mm)
- Weight: 16.5 lbs (7.5 kg) each
✅ Buy With Confidence — The Radique Promise
Backed by Radique Audio’s Bumper-to-Bumper Warranty and our Perpetual Trade-Back Program. When you’re ready to move on, we’ll take it back. That’s the Radique difference.
📦 Watch how we protect your gear — our unboxing video.
📺 Curious about our business? Check out our YouTube channel for behind-the-scenes videos and more!
📞 Questions? Use the Ask a Question button above, or call us at 613-416-9995.
🔌 Bi-Wire Cable, Built to Order
These speakers are bi-wire capable, and we build for it — one connector at the amplifier end, two at the speaker end, with the high and low frequency terminations specified separately, in our own gold-plated Radique Audio connectors. Build your custom speaker cable. 👉
>
| Weight | 35 lbs |
|---|---|
| Dimensions | 16.5 × 23.75 × 19 in |
You may also like…
Custom Speaker Cable Builder
🎯 Your specs, your cable — choose cable type, length & connectors
💰 Live pricing — price updates instantly as you configure
↔️ Bi-wire capable — available on Kimber 4PR, Kimber 4TC and House Quad
🔥 Heat-shrink reinforced — colour-coordinated at every termination & joint
🍁 Hand-assembled in Ottawa — backed by our Bumper-to-Bumper Warranty
Related Products
Rectilinear XI Speakers — Lattice Grilles, Walnut, Recapped, USA
Linn Katan Bookshelf Speakers, Pair — Cherry, Made in Scotland
A pair of Linn Katan bookshelf loudspeakers in cherry, built in Glasgow, Scotland.
✔️ Condition: Very Good
✔️ Covered by Radique Warranty
✔️ Includes Perpetual Trade-Back Program eligibility
✔️ Expertly packed for safe shipping
MartinLogan Motion 15 Bookshelf Speakers – Folded Motion, Boxed
The reason to want these is the tweeter — MartinLogan's Folded Motion driver is a pleated ribbon rather than a dome, so it squeezes air out from between its pleats and barely has to move. A 5.25-inch aluminium cone below it, 92 dB sensitivity, and the high-gloss black clean of the swirls these show so readily. Original boxes included.
Polk Audio RTi6 Bookshelf Speakers – Real Wood, Bi-Wireable
JBL 62T Bookshelf Speakers – Rosewood Finish, Titanium Dome
Discounted for the aftermarket screw holes a previous owner left in the back panels, and very good everywhere else — original drivers, clean rosewood finish, both tested here. A mid-1980s two-way with a pure titanium tweeter that runs out to 23 kHz, and an easy 89 dB load that a thirty-watt vintage receiver drives properly.
Mission 731 Bookshelf — Made in England, Inverted Driver Design
Two things to tell you: a ding on the top side edge of one cabinet, and third-party binding posts a previous owner fitted to one speaker. Otherwise good — and the design is the interesting part, since Mission's inverted geometry puts the tweeter below the woofer to bring the two into step at seated ear height. Made in England.
Bowers & Wilkins WM2 Outdoor Speakers, Pearl White, w/ Brackets
On an outdoor speaker the condition is the whole story — these are almost never retired for how they sound, but for sun turning a white cabinet chalky and yellow, freeze-thaw working at the seams, and grilles blooming with rust. Pearl White shows all of it more plainly than black would, and this pair grades Very Good, factory wall brackets included. B&W did not design a weatherproof box and then find a driver to fit it either: a 130 mm woven fibreglass cone crossed at 3.5 kHz to a 25 mm dome, the same material philosophy as their indoor speakers.
Castle Knight 1 Bookshelf Speakers — Real Wood Cherry, Pair
From a Yorkshire company that spent forty years being known for its cabinets above all else. The cherry veneer is deep-figured real timber, book-matched across the two cabinets so the grain mirrors when they are set up together, then sealed and waxed by hand over more than five days. Underneath is an honest two-way bass-reflex with a 130 mm woven natural-fibre bass/mid driver and five-way binding posts. Very Good condition.
PSB Alpha A/V Shielded Bookshelf Speakers — 6.5″ Woofer, Canada
The final 6.5-inch version of the speaker that made PSB's name — the 1998 Alpha A/V, with the upgraded tweeter, crossover and banana-plug terminals, and magnetic shielding so it can sit right beside a screen. Ninety decibels sensitive, so a modest receiver drives them well. Black ash, graded Very Good, bench-tested here. Pair.
