Grimm Audio LS1c + SB1 Review: Ranked #7 of 8

Last updated: September 25, 2026

The Grimm Audio LS1c + SB1 ranks #7 out of 8 total Large Size Powered Floorstanding Speakers for sound quality. See all Powered Home rankings for every top pick.

Prices on this page were last checked September 24, 2026 at 10:28 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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#7 Grimm Audio LS1c + SB1: $43,440 per pair The Listening Room eBay

Pros: Independently measured by Audio Science Review as a complete system with its SB1 subwoofers, with 0.83 listening-window smoothness and 0.38dB average on-axis deviation. ASR found the widest horizontal dispersion it had measured, very clean decay and distortion that stays low at 86 and 96dB. The -10dB point sits near 28.9Hz, and the SB1’s motional feedback controls the 10-inch woofer. It is a complete active system with Hypex NCore amplification, DSP crossovers and analog, AES/EBU and USB inputs. Measured bass extension of 28.9Hz (-10dB).

Cons: The standard preference score is only 5.73, rising to 7.54 with an ideal subwoofer, because spinorama puts the system’s -6dB point at 45.4Hz despite the subwoofers. At $28850 per pair with the SB1s, it costs far more than active systems that score higher. ASR measured a maximum of about 105dB, modest output for the price. Custom finishes add weeks to the dealer lead time.

How it compares: Just above it: Buchardt A700 - $22250 cheaper, 360W more output power. Just below it: B&O Beolab20 - $13850 cheaper, 400W more output power.

AES InputYes
Amplifier Power240W woofer and 100W tweeter per speaker (Hypex NCore); 400W per SB1 subwoofer
Bass Extension (-10dB)approximately 28.9Hz (measured, spinorama.org ASR data)
BluetoothNo
Coaxial InputNo
CountryMade in the Netherlands
Dimensions45.3”H x 20.5”W x 6.3”D (1150 x 521 x 160 mm)
DriversTPCD carbon composite tweeter (Seas); 8” Seas midrange-woofer; 10” up-firing SB1 subwoofer
EnclosureActive 2-way monitor on stand with integrated SB1 sealed subwoofer (3-way system)
Frequency Response20Hz-27kHz +0.5/-3dB with SB1 (manufacturer)
HDMI InputNo
InputsAnalog XLR, 3x AES/EBU, USB
Maximum SPL105dB (measured by ASR)
Optical InputNo
RCA InputNo
Spinorama Preference Score5.73
Spinorama Preference Score with Perfect Sub7.54
USB InputYes
Weight119 lbs (54 kg) each with SB1
XLR InputYes