Wharfedale Diamond 12.3i is a 2-way Passive Floor-standing speaker by Wharfedale. It was released in December 2025. It features a 1" Soft-Dome Tweeter and 2 x 5" Mica-infused polypropylene Woofer. The speaker has a frequency range of 45-20k Hz and a sensitivity of 89 dB. Wharfedale Diamond 12.3i has an MSRP of 1198$ per pair but can often be found around 0$ per pair.
Wharfedale replaced the older Diamond 12.3 with this model. Follow the link to read our detailed comparison of these models:
Compare Wharfedale Diamond 12.3i vs Wharfedale Diamond 12.3
Wharfedale's Diamond 12 Series of Loudspeakers
Diamond 12.3i is a member of Wharfedale's Diamond 12 series of Passive speakers. Diamond 12 is the latest generation of Wharfedale's acclaimed budget Diamond range. Below you can see the main specs of these speakers.
See all 10 Wharfedale Diamond 12 models compared »
Wharfedale Diamond 12 Series Speakers
Wharfedale Diamond 12 Series Speakers
Frequency Response of the Wharfedale Diamond 12.3i Speaker
Wharfedale Diamond 12.3i has a Frequency response range of 45-20k Hz and Power Range of 30-150 watts. With a minimum frequency of 45 Hz, Diamond 12.3i delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
Here we have a comparison of how Diamond 12.3i's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Floor-standing Speakers
Thinking about a subwoofer for the Wharfedale Diamond 12.3i?
Among the speakers in our database with a max MSRP price of 1500$ (Pair), these are the 5 Passive Floor-standing speakers that have the deeper bass levels than the Wharfedale Diamond 12.3i's 45Hz:
Impedance and Sensitivity
Wharfedale Diamond 12.3i's nominal impedance level is
8 ohms and has a sensitivity of
89 dB.
Sensitivity
Floor-standing Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Wharfedale Diamond 12.3i is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
89dB of the Wharfedale Diamond 12.3i is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise. Work out how loud the Wharfedale Diamond 12.3i plays in your room →
What amplifier does the Wharfedale Diamond 12.3i need?
At normal listening levels in a medium room, about
9.5–150 W
per channel into 8 ohms.
Set your own conditions and we will rank every amplifier we cover.
Prefer to browse? Integrated amplifiers under $1,500, or every amplifier we cover.
Input Type
Diamond 12.3i has Binding post type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion.
Work out what gauge speaker cable this run needs →
Wharfedale Diamond 12.3i External Dimensions and Weight
Wharfedale Diamond 12.3i has external dimensions of (Height x Width x Depth) 38-3/4inch x 9-3/4inch x 13-3/4inch (985.0 x 248.0 x 350.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Wharfedale Diamond 12.3i is approximately 868.0cm2 / 134.5inch2.
To get a better perspective on the real life size of Wharfedale Diamond 12.3i, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
Wharfedale Diamond 12.3i Speaker Size Compared to a Compact Disc
Here we place the Wharfedale Diamond 12.3i virtually next to a standard width amplifier and turntable on a media center to get a better idea about the size.
Wharfedale Diamond 12.3i Floor-standing Speaker next to a Media Stand
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe Wharfedale Diamond 12.3i weighs 19.55kg / 43lbs per piece. Here is a comparison of how Diamond 12.3i's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers under $1500
Available colors
Wharfedale Diamond 12.3i is available in Grey.
What's in the Box of Wharfedale Diamond 12.3i?
Here are the items that are included inside the box of Diamond 12.3i:
- 2 Floorstanding loudspeakers
- 2 Grilles
- 4 Outrigger feet
- 8 Spikes (pre-installed on outrigger feet)
- 8 Isolation pucks
- Eight M6x25mm phillips-head screws
- User's Manual
Recommended Accessories
Here is a list of accessories that we think you may need for the Wharfedale Diamond 12.3i.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.