NHT Evolution T5 Tower System – M5 + B5, A1 Amps, X1 Crossover

A complete NHT Evolution T5 tower system, made in the USA: a pair of M5 three-way monitors mated to a pair of B5 powered bass modules, driven by two NHT A1 250-watt monoblock amplifiers and managed by the NHT X1 active crossover. Assembled, this is a four-way, 550-watt-peak floorstanding system that goes down to 26Hz without a separate subwoofer.

Radique’s Take — Read This First

This is a sophisticated, highly configurable and genuinely capable system. It is not plug-and-play, and we would rather say so than have you find out at home. If you are an audiophile — or an aspiring one — who likes the idea of tuning a system to your specific room and application, this is a rare opportunity at this price. If you want speakers you connect and forget, look elsewhere in our catalogue and we will happily point you at something. Includes a soft copy of NHT’s thorough and well-written manual covering every component and configuration option.

What’s in the System

• 2 × M5 three-way monitors — 1″ aluminum dome tweeter, 3″ paper cone midrange, 5.25″ laminated cone woofer, acoustic suspension, magnetically shielded
• 2 × B5 bass modules (mirror-imaged) — side-firing 12″ aluminum cone woofer, acoustic suspension
• 2 × A1 monoblock amplifiers — 250W RMS into 6Ω, hybrid Class AB/Class G design, RCA and XLR inputs
• 1 × X1 active crossover — bass management with variable low-pass, selectable high-pass, and phase control

The M5 monitors mount to the B5 modules to form the completed T5 towers. The B5 woofers can be configured firing inward or outward to optimise bass for your room — one of several reasons this system rewards someone who enjoys setting things up properly.

Sound & Design

The T5 is consistently praised for accurate, neutral reproduction, excellent imaging, a wide soundstage and seamless integration between the monitors and the bass modules. Bass reaches a clean 26Hz, which removes the need for a separate subwoofer in most rooms. Standing 43″ tall and just 7.75″ wide, the towers carry an elegant, modern profile despite their 72 lb per channel of high-quality materials and construction.

Specifications

Completed T5 tower — M5 monitor integrated with a B5 bass module

• Frequency response: 26Hz–30kHz (±3dB)
• Peak acoustic output: >114dB SPL at 1 metre
• Dimensions: 43″ H × 7.75″ W × 17.25″ D
• Weight: 72 lb per channel

M5 three-way monitor

• Acoustic suspension · crossover 450Hz and 3kHz, 12dB/octave
• Impedance 6Ω nominal, 3.5Ω minimum · sensitivity 85dB (2.83V / 1m)
• Power handling 150W RMS, 300W peak · NHT recommended amplifier power 100W · response 66Hz–30kHz (−6dB), LF cutoff 51Hz
• 7.75″ H × 17.75″ W × 8.5″ D · 21 lb

B5 bass module (mirror-imaged pair)

• 12″ aluminum cone, acoustic suspension · impedance 12Ω nominal, 9Ω minimum
• Power handling 125W RMS, 250W peak · sensitivity 88dB (2.83V / 1m)
• Response 26Hz–140Hz (−6dB), LF cutoff 24Hz · 25″ H × 7.75″ W × 17.25″ D · 42 lb

A1 monoblock amplifier (×2)

• 200W RMS into 8Ω · 250W into 6Ω · 300W into 4Ω
• Frequency response 10Hz–65kHz (±3dB), 20Hz–20kHz (±0.5dB) · THD <0.01% (20Hz–1kHz)
• S/N 100dB unweighted · damping factor >100 into 6Ω · gain +27dB (1.7V sensitivity)
• RCA and XLR inputs, five-way binding post outputs, external trigger, auto standby
• 17.1″ W × 2.4″ H × 11″ D · 18 lb · rack-mountable

X1 active crossover

• Low-pass continuously variable 50–140Hz (12dB/oct) · high-pass selectable 50 / 80 / 110Hz
• Phase control variable 0–90°, switchable 0–180° · stereo/mono switch · +10dB / 0dB gain
• Gold-plated RCA and XLR in and out, LFE input and thru · S/N >105dB high-pass
• 17″ W × 1.5″ H × 11.5″ D · 9 lb

Completing the System

A 72 lb tower with a side-firing 12″ woofer puts serious energy into your floor. IsoAcoustics GAIA II isolators are the right rating here — 120 lb per set of four against these towers’ 72 lb — and ship with M6-1.0, M8-1.25 and 1/4″-20 thread adaptors. On carpet, add GAIA Carpet Discs. We are an authorized IsoAcoustics dealer; ask us to confirm thread fit before you order.

This system needs four speaker runs rather than two (one to each M5 and one to each B5), plus interconnects for the crossover, and the runs are rarely standard lengths. Build exactly what you need with our Custom Speaker Cable Builder, made to order in our own shop and terminated in Radique gold-plated banana plugs.

🚚 Shipping This Item

Due to its size and weight, this system cannot go by standard courier — but we have two alternatives:

• Personal delivery — we deliver in person anywhere along the Windsor–Québec City corridor, carefully and on your schedule.
• Freight shipping — we ship skid-mounted via freight carrier anywhere in Canada, and we stand behind it: if something arrives damaged, we make it right.

Full details on both options are on our Curbside Delivery page. 👈

Why Buy From Radique

This system is backed by our Bumper to Bumper Warranty and our Perpetual Trade-Back Program, so you can buy today and move up later without losing your investment. Audition by appointment at our Kanata North location in Ottawa. Every order ships in our 275 lb-test double-wall packaging, engineered to protect your gear in transit.