LFR1100 Omnidirectional Speakers
The LFR1100 is the brainchild of Andrew Welker and Ian Colquhoun. This omnidirectional wonder solves the problem of typical bipole or dipole speakers: they typically provide incredible depth of soundstage, but images tend to be ill-defined and washed-out.
By using a sophisticated DSP to tailor the response of each complement of drivers, front and rear, Axiom was able to overcome this bipole/dipole limitation to create the first omnidirectional speaker that preserves the spacious sound enthusiasts love, but with the same neutral tonal balance and pinpoint imaging for which Axiom speakers are renowned. The result? 2-D imaging is suddenly brought into a 3-D soundstage, immersing the listener and enveloping your senses. No matter where in the room you are!
"The first thing we noticed about the 1100's, before their brilliant accuracy and fiercely disciplined hurricane-force, was the astonishing width of the sound stage and breadth of the center image. The tandem team of front and rear-firing drivers used the backdrop of our test room to create a perfect synthesis between the speaker faces, bringing a whole new meaning to the phrase "wall of sound".
Ryan Waniata , Digital Trends
Traditionally, bipole/dipole designs have been plagued by a persistent problem: the spacious presentation sounds great for a while, but eventually it becomes off-putting because you can't isolate soloists or pinpoint actions. Axiom met this challenge by innovating a way to apply psychoacoustic principals to create speakers that offer the best of both forward radiating and bipole designs. Extensive customization of the frequency response of the rear drivers, working in conjunction with a more subtle customization of the front drivers, creates a seamless soundstage with minimal roll-off at the top end, even at extreme angles away from the sweet spot. You'll still marvel at the sense of the speakers' soundfield opening up before you, but the image detail doesn't shift at all.
"The LFR1100 is absolutely crystalline in its output and the level of detail is just mind blowing. I cannot believe I am saying this, but it is literally like having the artist in the room with you."
-- Dale Rasco, HomeTheaterShack
"I always look for speakers that melt the walls away and transport me to the concert hall; or into the world of the movie I'm watching. The LFR-1100s did this in a way I didn't think was possible; especially for a speaker pair that costs less (way less!) than $25,000."
-- Chris Eberle, Secrets of Home Theater and High Fidelity
This speaker provides serious sound power: the amount of energy radiated into the room from 11 drivers will blow your mind! The front baffle features three High Powered 6.5-inch woofers, two 5.25-inch midrange/woofers, and two 1-inch tweeters, with our signature vortex port in the bottom. The rear baffle adds three more vortex ports, two more 5.25-inch midrange/woofers, and another two 1-inch tweeters. If you haven't guessed already, it takes some serious amplification to drive these speakers! Four matched channels of amplification in total, in fact: right front, left front, right rear, and left rear all need to be powered separately and it makes these speakers truly sing.
Axiom's DSP1, included with the LFR1100s.
The DSP included with the LFR1100s separates the front right and left channels into these four channels. The DSP included is in a stand-alone case that sits between your preamplifier or receiver and the amplifier. The DSP accepts the main right and left channels from the preamplifier through RCA connects or from your receiver through High Level speaker connections and outputs right front, right rear, left front, and left rear channels for your amplifier.
You can also choose in Customize Yours some upgraded and integrated versions of the DSP. There is another stand-alone version of the DSP that does not have the High Level inputs but instead has both RCA and Balanced in and out. Then there are two version of and integrated DSP and amplifier. Both versions include our ADA1000-4 amplifier with the DSP built into it. The one version accepts either a pre-out or high level (speaker wire) out from your pre-amp or receiver. The other version will accept up to 3 independent sources (i-pod, CD player, etc) and has an input selector switch, a balance control, and a volume control on the front panel.
The speaker has a nominal impedance of 4 ohms, front and rear, and a frequency response of 31 Hz – 20 kHz -3dB and measures 48 inches / 1207 mm tall.
Questions We Get All the Time
Why a Digital Signal Processor (DSP) for the LFR1100?
In order to get optimal integration between the front and rear drivers each set of drivers needs to have a very unique set of amplitude response curves. This isn't possible to do with a passive network, so we employ the power of a DSP to ensure we end up with the desired family of curves measured all the way around the speaker. This ensures complete control over the midrange fidelity of the omnidirectional speaker, and keeps it from suffering from a lack of image focus or spectral neutrality which is so often a problem with omnidirectional designs. The DSP tailors phase response between the front and back sections, as well as the amplitude response characteristics.
All Axiom LFR Speakers Feature:
- Titanium Tweeters
- Aluminum Woofers and Midrange/Woofers
- Anti-Standing-Wave cabinets that suppress internal resonances which color sound
- Vortex-ported cabinets to reduce port noise
- Custom programmed DSP for full control over the Family of Curves
- 5-way gold-plated binding posts
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|Enclosure||Triple Vortex / Reflex|
|Max RMS Amp Wattage||600 Watts|
|Max Dynamic Amp Wattage||2400 Watts|
|Min Amp Power||10 Watts|
|Freq Resp +/-3dB (Hz)||34 - 20k|
|Freq Resp +3dB- 10dB (Hz)||27 - 20k|
|Impedance (Ohms)||4 Ohms|
|SPL in Room1w/1m(db)||93 dB|
|SPL Anechoic 1w/1m(db)||89 dB|
|X-Over||200 Hz & 2 kHz|
|Tweeter||4 x 1"|
|Midrange||4 x 5.25"|
|Woofer||Triple 6.5" High Power|
|Dimensions H W D (inches)||47.5" x 9.25" x 17"|
|Dimensions H W D (mm)||1207 x 235 x 432|
|Weight (lbs) each||88 lbs|
|Weight (kg) each||40 kgs|
|DSP - Max Output||2Vrms|
|DSP - Gain||Unity|
|DSP - THD||<0.008% @ 1Vrms|
|DSP - Signal to Noise Ratio (Input shorted, 22Hz-20kHz, un-weighted, Ref. 2V)||102dB|
|DSP - Digital Conversion||24-bit, Sigma-Delta ADCs and DACs @ 96kHz Sampling Rate|
|DSP - Power Consumption||13W|
|DSP - RCA Output (Single Ended)||Yes|
|DSP - High Level Input||Yes|
|DSP - AC Input Voltage||115 or 230|
|DSP - Dimens. H W D (inches)||3.5|
|DSP - Dimens. H W D (mm)||88 x 450 x 425|
|DSP - Weight (lbs) each||27|
|DSP - Weight (kg) each||12|
|Frequency Graph||Frequency Graph|
|Impedance Graph||Impedance Graph|
...twirling the dial never made the tone harsh. It just became more and more present. I've experienced a large sound stage before; even to the point where my room disappears completely. The LFRs made it sound and feel limitless. . . . I have never felt more like I was actually in a concert hall than I did listening to the LFR1100s.
I have been a musician for nearly 30 years. I have performed at too many venues to recall and I believe that I have a firm grasp on what music should sound like or rather what the artist intended it to sound like and I can say without hesitation that the LFR1100's are that rare breed of speakers that are capable of capturing the very soul of the music.
'Our experience with Axiom's LFR-1100 speakers and ADA-1500-4 amplifier was one of brilliance, revelation, and total musical immersion, on par with some of the best listening sessions we've ever experienced. We tested this system from every angle - literally and metaphorically - and we had a near impossible time exposing a flaw.
'On top of that, the LFR-1100s' massive soundstage and vibrant power also make them the perfect system for large gatherings of folks who actually care about the sound - no more fighting over that sweet spot. (Audiophile party anyone?) If you're looking to step into a real home hi-fi system, we think purchasing the Axiom LFR-1100 and ADA-1500-4 is an investment you will never regret.'
'The first thing that was apparent about the sound of the LFR1100 was its seemingly limitless dynamics and ability to play loudly with no hint of strain. I've had several speakers in my system that I've described as having exceptional power-handling characteristics, but the LFR1100 was the best in that regard by a wide margin. It could coast along at volume levels that, with most speakers of its size and price, would have had me worrying about damaging the drivers. . . But my timidity was probably misguided -- even at these insane levels, the sound was still crystal clear, without any of the compression or harshness associated with driving speakers past their limits.
'. . .their big, open sound, exceptional clarity, and massive dynamics are astonishing for a speaker of this size and price.'
a sophisticated huge soundstage with pronounced layering and good image focus in a large listening window that remained stable over both width and height. . . . Mr. Colquhoun and Mr. Welker have produced a speaker system which goes for refinement in tonal balance, very wide dynamic range and low distortion. Add to that a well-focused immense soundstage and a slight softening in transient behavior and one remains outside the extreme transparency camp to be firmly on the musical enjoyment side. The big Axiom plays it big, brawny and engaging.
WOW! I have never been this taken aback by a pair of speakers. Every song I play is like hearing it for the first time!