LEAK
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Specs
| Design | Two-way vented-box (bass reflex) standmount loudspeaker |
| Bass/Mid Driver | 6.5 in aluminum-foamcore Sandwich cone (aluminum skins bonded to PMI structural foam core) |
| Tweeter | 1.2 in coated textile dome |
| Sensitivity | 86.5dB (2.83V/1m) |
| Nominal Impedance | 6 ohm (8 ohm compatible), 4 ohm minimum |
| Frequency Response | 44Hz to 26kHz plus or minus 3dB (bass extension to 38Hz) |
| Crossover Frequency | 2.4kHz |
| Recommended Amplifier Power | 25 to 150W |
| Peak SPL | 106dB |
| Cabinet and Finish | Real walnut veneer with aluminum trim |
| Dimensions (H x W x D) | 16.4 x 9.9 x 12.4 in |
| Weight | 27.1 lbs each |
Warranty
Sold as an authorized LEAK dealer by All Elite Audio. New LEAK Sandwich 150 units include the full LEAK manufacturer warranty of 3 years parts and labor for the original owner. Contact us with any setup or service questions.
What's in the Box
- Pair of LEAK Sandwich 150 loudspeakers
- Removable grilles
- Documentation and warranty information
Overview
The LEAK Sandwich 150 is a two-way, vented-box standmount loudspeaker that revives one of the most storied ideas in British hi-fi. Its 6.5 inch bass and midrange driver uses the classic LEAK Sandwich cone principle, bonding light, stiff aluminum skins to a PMI structural foam core to create a diaphragm that is both rigid and well damped. A 1.2 inch coated textile dome tweeter handles the high frequencies, with the two drivers meeting at a 2.4kHz crossover for a coherent, natural presentation.
Engineering aside, the Sandwich 150 wears its heritage on its sleeve. Real walnut veneer and aluminum trim recall LEAK's mid-century designs while the modern bass reflex cabinet delivers bass extension down to 38Hz from a compact enclosure. Sensitivity of 86.5dB and a 6 ohm nominal impedance make it a comfortable match for a wide range of amplifiers rated from 25 to 150W.
This is a speaker for the listener who wants engaging, honest sound with a strong sense of design character. It suits small to medium rooms, works beautifully on quality stands, and rewards a clean source and amplifier with detail, tone, and dynamics that belie its size.
Key Features
- Two-way vented-box (bass reflex) standmount design
- 6.5 inch aluminum-foamcore Sandwich cone bass and midrange driver reviving the classic LEAK principle
- 1.2 inch coated textile dome tweeter for smooth, detailed highs
- Frequency response 44Hz to 26kHz plus or minus 3dB with bass extension to 38Hz
- Crossover at 2.4kHz for a coherent driver blend
- Sensitivity 86.5dB and 6 ohm nominal impedance for wide amplifier compatibility
- Recommended amplifier power 25 to 150W with peak SPL of 106dB
- Real walnut veneer with aluminum trim honoring LEAK's mid-century styling
How the Sandwich 150 Compares
LEAK Sandwich 150 vs LEAK Sandwich 250
The Sandwich 250 sits higher in the LEAK range as a three-way standmount, adding a dedicated midrange driver for greater separation of instruments and scale. The Sandwich 150 keeps things to a compact two-way, which makes it easier to place in smaller rooms and a natural fit where space is limited. Choose the 150 for a nimble, room-friendly footprint and the 250 when you have the space and want more low-end weight and midband resolution. See the LEAK Sandwich 250.
LEAK Sandwich 150 vs Mission 700
The Mission 700 is another IAG standmount with a warm, forward midrange voiced for musical engagement and vocal presence. The Sandwich 150 leans on its aluminum-foamcore cone for a crisp, well-damped character with distinctive walnut styling. Both suit small to medium rooms, so the choice comes down to whether you prefer Mission's classic voicing or LEAK's Sandwich-cone signature and mid-century design. See the Mission 700.
LEAK Sandwich 150 vs Spendor Classic 4/5
The Spendor Classic 4/5 is a compact two-way voiced in the traditional BBC-influenced style, prized for a relaxed, tonally rich midrange. The Sandwich 150 offers a more energetic, detail-forward presentation via its rigid Sandwich cone and a slightly deeper bass reach. Pick the Spendor for long, easygoing listening sessions and the LEAK for a livelier, more incisive sound with retro flair. See the Spendor Classic 4/5.
Recommended Amplification and Source
A loudspeaker needs amplification and a source to make music. These catalog pairings bring out the best in the Sandwich 150, from natural same-brand LEAK electronics to capable streamers.
- LEAK Stereo 130 Integrated Amplifier The natural same-brand match, its 2 x 45W and built-in ES9018K2M DAC comfortably drive the Sandwich 150 within its recommended power range while matching the walnut and aluminum aesthetic.
- LEAK Stereo 230 Integrated Amplifier For more headroom, the Stereo 230 steps up to 2 x 75W into 8 ohms with the higher ES9038Q2M DAC, giving the Sandwich 150 extra dynamic authority in larger rooms.
- LEAK TruStream Network Streamer A tidy digital front end with its own ES9038Q2M DAC, Roon Ready support and Tidal, Qobuz, Spotify Connect and AirPlay 2, ideal for feeding either LEAK amplifier.
- LEAK CDT CD Transport For CD collections, the CDT is a dedicated transport that outputs digital to the DAC inside the Stereo 130 or 230, completing a matched LEAK stack.
- Dual CS 518 Turntable For vinyl, the CS 518 pairs neatly with the MM phono stage in the LEAK integrated amplifiers to bring analog warmth to the Sandwich 150.
Frequently Asked Questions
What type of speaker is the LEAK Sandwich 150?
It is a two-way, vented-box (bass reflex) standmount loudspeaker designed to sit on stands or a shelf.
What is a Sandwich cone?
It is LEAK's classic driver principle in which light, stiff aluminum skins are bonded to a PMI structural foam core, creating a diaphragm that is both rigid and well damped.
What drivers does it use?
A 6.5 inch aluminum-foamcore Sandwich cone bass and midrange driver plus a 1.2 inch coated textile dome tweeter.
What is the frequency response?
44Hz to 26kHz plus or minus 3dB, with bass extension down to 38Hz.
What is the sensitivity?
86.5dB measured at 2.83V/1m.
What is the nominal impedance?
6 ohm nominal, 8 ohm compatible, with a 4 ohm minimum.
What amplifier power is recommended?
Between 25 and 150W, which makes it compatible with a wide range of amplifiers.
What is the crossover frequency?
The crossover is set at 2.4kHz.
What is the peak SPL?
The Sandwich 150 is rated for a peak SPL of 106dB.
What finish is available?
Real walnut veneer with aluminum trim, reflecting LEAK's mid-century design heritage.
What are the dimensions and weight?
Each speaker measures 16.4 x 9.9 x 12.4 inches and weighs 27.1 lbs.
Do these speakers need an amplifier?
Yes. They are passive loudspeakers and require an amplifier such as the LEAK Stereo 130 or Stereo 230 to produce sound.
Which LEAK amplifiers pair best?
The LEAK Stereo 130 and Stereo 230 integrated amplifiers are the natural same-brand matches and share styling and engineering DNA within IAG.
How do I add streaming?
The LEAK TruStream network streamer offers Roon Ready, Tidal, Qobuz, Spotify Connect and AirPlay 2 and connects cleanly to a LEAK integrated amplifier.
Can I play CDs with these speakers?
Yes. Use the LEAK CDT transport connected to a DAC-equipped amplifier such as the Stereo 130 or 230, since the CDT has no built-in DAC of its own.
How does the Sandwich 150 differ from the Sandwich 250?
The 150 is a compact two-way for smaller rooms, while the 250 is a three-way that offers more scale, bass weight and midband resolution.
Are stands recommended?
Yes. As a standmount design it performs best on solid stands that place the tweeter near ear height.
What room size suits these speakers?
They are well suited to small and medium rooms, with bass extension to 38Hz from a compact cabinet.
Is a grille included?
Yes, removable grilles are supplied with the speakers.
Why buy from All Elite Audio?
All Elite Audio is an authorized LEAK dealer, so your Sandwich 150 loudspeakers are genuine, fully warrantied and backed by expert support and setup guidance.
