Is that just with a REL sub?
I find with my JL's (subs), the higher I set the external crossover, the better the Auditors sound. (80hz to 100hz)

Seems like you would have a hz hole setting the x-over at 26hz even with room boost.

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McIntosh 501's, Sonus Faber Elipsa speakers,McIntosh LS 360's Full Surround Speakers in Home Theater. (2) MR85, MCD201, C46 Pre, (2) JL F113 Fathom Subs, (1) JL F112, MA2275 Int Amp, Sonus Faber Cremona Auditor Speakers, Project Turntable. Blackbird Cart, Clearaudio Concept table, MC, Oppo 95 120 inch screen and an Epson 1080UB Projector. Nothing better then Pipes/Cigars, and a Great movie with the JL subs Pounding. MAC1700 Receiver and ML-1C speakers

I believe it is rather specific to REL. REL subs are designed to function best with regards to the lowest bass notes. A REL sub is not truly designed to play upwards of 80 or 100 Hz whereas the JL subs are very musical all way up to 120 Hz or so.

Best of both worlds would be to crossover your mains and subs to avoid a bass hump with overlapping frequencies - maybe you already have

Myself, I have my dual REL B2's crossover set at 36Hz with excellent results. Gain is about 1/2 but I don't have then corner loaded so I need more gain.

Ruffdoc, I have a small room and subs make a tremendous difference!

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McIntosh MCD500, C2300, MC2102, MC402 Gold Lion 12AX7s 12AT7s
VPI Scoutmaster/JMW10.5i/SDS/Clamp Clearaudio Maestro Billy Bags Rack
Sonus Faber Cremona Auditors REL B2 (2)Symposium Ultra,Svelte,Rollerblocks
Transparent Ultra MM2 IC/SC, Reference Power ASC Tower Bass Traps(2), Sound Planks(15)
PS Audio Power Plant Premier x 2, Dedicated 20amp lines (2)

I agree with Ruffoc...the Auditors love space. I wish my room was larger to allow more space around the speakers. I achieved a much better sound when I moved my equipment out from between the Auditors and got sound treatments.

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McIntosh MCD500, C2300, MC2102, MC402 Gold Lion 12AX7s 12AT7s
VPI Scoutmaster/JMW10.5i/SDS/Clamp Clearaudio Maestro Billy Bags Rack
Sonus Faber Cremona Auditors REL B2 (2)Symposium Ultra,Svelte,Rollerblocks
Transparent Ultra MM2 IC/SC, Reference Power ASC Tower Bass Traps(2), Sound Planks(15)
PS Audio Power Plant Premier x 2, Dedicated 20amp lines (2)

All the Sonus Faber speakers need space and I've had 3 different pairs in my house. The Elipsa and Strads are a bit more forgiving but for the most part expect pretty heavy coupling to side walls and the resulting bass bloat and loss of articulation as well as heavy overhang unless you give them some "elbow room".

Room is 12 X 18 X 8 and is mostly open on the left side (when facing the system). Have you listened to the Mick Jagger song "She's The Boss"?

You'd think so, but that isn’t the case. As others note, RELs are sub bass systems meant to extend the frequency spectrum to the lowest bass notes. They work best with full range speakers

A REL sub will NOT turn your mini monitors into a full range floor standing speaker! don’t even try. What you want to do is to use the sub to enhance the very tuneful bass the Auditors have already without mucking up the upper bass and mids with bloaty, flubby sound.

My REL adds weight to the 35-45 HZ range and no more.

Remember good bass is like salt in cooking (if it constantly draws attention to itself, you likely have too much)

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MA2275, MR71, Harbeth P3ESR, Esoteric DV50s, J.A. Michell Orbe, SME 309, Ortofon 2M Black

Hi how much is the Auditor M and where to get it in singapore?

Congrats nice system !
Gonzalo

Any comments on set up appreciated - I think I may need to space the Auditor Ms father apart and move the REL between them. My listenin position is about13' from the current M location.

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Miner the space between the speakers depends on how far away your listening chair is. You want to set up a equilateral triangle between the speakers and your ears . I find a little toeing in of the speakers helps quite a bit.