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HSD Sound Systems · Point-Source Top

HSD Uppercut

Model PS1581.4

Medium-format, tri-amped full-range top with serious low-end reach.

The Uppercut is a medium-format, full-range cabinet delivering exceptional clarity and coverage across mid-bass and high-frequency ranges. Its tri-amped configuration integrates a powerful 15" woofer, an 8" midrange, and a 1.4" compression driver for balanced, full-spectrum sound down to 45 Hz. Integrated fly points and optional custom risers make it an affordable, high-output solution for touring and installs. Hand-built by Hennessey Sound Design in Massachusetts, and backed by a 5-year limited warranty.

$5,400 retail

Built to order. Quote includes freight, system design, and current lead time.

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HSD Sound Systems Uppercut point-source top by Hennessey Sound Design

Amplification

Passive cabinet, amplification required
The Uppercut is tri-amped: LF (1,200 W), MF (250 W), and HF (100 W) sections each take an amp channel at 8 ohms. A four-channel HSD KP Series amp runs one Uppercut with a spare channel, a natural home for a Southpaw fill.
3 amp channelsper cabinet, 8Ω sections
Format
3-waytri-amped full-range
Drivers
15″+8″+1.4″LF / MF / compression driver
Response
45Hzto 20kHz (-3 dB); 35Hz at -10 dB
Weight
128 lbs24″ W × 40.75″ H × 24″ D

Full specifications

HSD Uppercut (PS1581.4) specs

Factory specifications from Hennessey Sound Design. Download the cut sheet for drawings and driver details.

Frequency Response45 Hz - 20 kHz (-3 dB); 35 Hz - 20 kHz (-10 dB)
SensitivityHF 108.5 dB / MF 106 dB / LF 105 dB (1W/1m)
Drivers1 x 15" woofer, 1 x 8" midrange, 1 x 1.4" compression driver
Power HandlingLF 1,200 W / MF 250 W / HF 100 W continuous (2,400 / 500 / 200 W program)
Impedance8 ohms nominal per section
Coverage60 x 40 degrees (H x V)
Dimensions24" W x 40.75" H x 24" D
Weight128 lbs
Connectors2 x NL8
HSD Uppercut cut sheet (PDF)

Why buy from Fullblast

An HSD system is a build, not a box. We manage the whole thing.

01

Authorized HSD dealer

Fullblast Sound is one of only three authorized HSD Sound Systems dealers in the United States. Factory pricing, factory support, and a direct line to the Massachusetts shop on every order.

02

Real dealer support

We spec the system against your room and application, handle freight and logistics, and stay on call after delivery. Talk to us before you order and we will get the design right the first time.

03

Nationwide freight

Every HSD cabinet ships crated freight from the factory. We quote and coordinate delivery to your dock or venue anywhere in the country as part of the system price.

04

Financing available

Spread an HSD system across payments instead of a single check. See financing options or ask for terms with your quote.

Get a real quote

Send a system spec, not a price shopping number

Tell us the room, the audience size, and what you run today. We come back with the right HSD build, amplification, freight, and current factory lead time. One short form.

Request Quote Or call 210.489.0492

Same business day response.

Buyer research

Questions buyers ask about the Uppercut

Common pre-purchase questions on the HSD Uppercut.

Q1

What amplifier drives the Uppercut?

Three channels per cabinet: LF 1,200 W, MF 250 W, HF 100 W continuous, all 8 ohms nominal. A four-channel HSD KP Series amplifier runs one Uppercut on three channels and leaves the fourth free, many owners use it to drive a Southpaw front-fill, which shares the Uppercut's exact 8″ mid and 1.4″ compression driver.

Q2

Do I need a subwoofer with the Uppercut?

For a lot of programs, no: the Uppercut is genuinely full-range down to 45 Hz (-3 dB) and 35 Hz (-10 dB), unusual reach for a top. For dance-floor weight, add the Switchback (32 Hz) or step to the 21″ FLH family for sustained low-end pressure.

Q3

Uppercut or Haymaker, which top do I want?

The Haymaker is the large-format piece: 18″ LF, 10″ mid, four 1″ compression drivers, selectable 90/60/40-degree waveguides, 155 lbs, $8,500. The Uppercut is the medium-format answer: 15″ + 8″ + 1.4″, fixed 60 × 40 coverage, 128 lbs, and $5,400, with deeper standalone bass extension. If you need waveguide options or maximum SPL, Haymaker; if you want one box that covers most shows, Uppercut.

Q4

Can the Uppercut fly?

Yes, integrated fly points are standard, and optional custom risers are available for ground-stacked deployment with vertical aiming. At 128 lbs it is a practical two-person cabinet for touring and installs.

Q5

What are HSD's build terms?

Every cabinet is built to order in Massachusetts, with lead times typically around 90 days. Each carries HSD's 5-year limited warranty, and free factory training is included when your system is complete. We will walk you through ordering and payment when we quote your system.

System design

This pairs well with

The Uppercut covers most shows on its own; these are the pieces owners add around it.

Fills + delays

Southpaw extension

Same 8″ mid and 1.4″ compression driver as the Uppercut, so fills and delays voice identically. 50 lbs, $2,000.

Low end

Switchback 18″ FLH

Powerful bass to 32 Hz in a truck-pack-friendly footprint. The right scale of sub for an Uppercut rig.

Amplification

HSD KP Series DSP amps

One 4-channel KP runs an Uppercut on three channels with the fourth free for a fill or monitor.

Explore the HSD lineup

Where the Uppercut sits in the catalog

One cabinet in a system. See the full HSD Sound Systems hub.

Point-source tops

HaymakerTri-amped 18/10/4×1 point source. Selectable waveguides.
UppercutMedium-format tri-amped top. Full range to 45 Hz.
SouthpawHigh-mid extension for fills, delays, monitors. 50 lbs. Mantarray 60Array-optimized 60×40 point source. Mantarray 90Wide 90×40 coverage, reaches 90 Hz alone.

Mid-bass horns

HammerDual-18 FLH mid-bass. 108 dB sensitivity. V-HornCompact 15″ mid-bass horn. Van-friendly. Cannon18″ bandpass horn. Rides on big sub stacks.

Subwoofers

WarhammerDual-18 FLH sub. Sustained 140 dB+. Switchback18″ FLH to 32 Hz. Truck-pack footprint. EagleCluster-optimized 18″ FLH to 29 Hz. BattleaxeThe renowned 21″ FLH. Usable to 25 Hz. BattlehawkThe BattleAxe evolved. 3,000 W, flatter response. Tomahawk21″ FLH, 100 lbs lighter. Built for the road. Sherman24″ flagship. One Sherman = two BattleAxes.

Monitors

DJ18 Monitor18″ booth sub to 27 Hz. Passive or powered. Reference 12Coaxial 12″ reference monitor. 80×80.

Line array

BallistaMedium-format line array module. Four-way passive.

Amplifiers

KP Series Amplifiers2–4 ch DSP amps, up to 10 kW. FIR at 96 kHz. KD Series Amplifiers4-ch Class-D, up to 20 kW. Universal voltage.

Documentation

Cut sheet

HSD Uppercut cut sheet (PDF) Full HSD Sound Systems lineup

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