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JPJ started following DBX DriveRack PX with reference microphone
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Here we have my DBX DriveRack PX professional loudspeaker management processor with matching DBX reference microphone for sale. I am the second owner, and this has lived in a flightcase all its life alongside my mixing console. Condition is used, although the reference mic was new this year (2025) has never been used in anger. A great tool for those of us who mix live sound from stage side whilst playing. I’m only selling as I have now upgraded my bass bins to a matching pair to my tops so will be using the internal crossovers to cut down on the weight of gear I shlep to gigs. Because I am inherently lazy, I asked ChatGPT to describe the functionality and this is what it came up with, which sounds accurate to me based on my experience. “The DBX DriveRack PX is a professional loudspeaker management system that optimises live sound systems. It combines automatic room tuning, crossover control, EQ, dynamics, and feedback suppression in one rack-mount unit. Using the included DBXRTA-M measurement microphone, you can run auto-EQ and real-time analysis to tailor your speakers and subs for smooth, balanced frequency response in any venue. Other key features include configurable crossovers, delay alignment, compression/limiting, and feedback elimination, making it ideal for PA systems, bands, DJs, and event sound setups.” I’m looking for £300 for the DriveRack and reference mic, or £250 for the DriveRack and £50 for the microphone. Collection from Killingworth Newcastle upon Tyne, or delivery at the buyers cost and risk. Any questions, please ask!
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PJB Big Head headphone amp
Happy Jack replied to Happy Jack's topic in Accessories & Other Musically Related Items For Sale
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Ovation Magnum II Fretless with Graphic EQ
Happy Jack replied to Happy Jack's topic in Basses For Sale
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I love outside Sunday afternoon gigs. Daryl
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You're lucky Dave. Gigs like that for us are far and few in between. Daryl
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Mesa Boogie Walkabout Scout 1x12 300w Bass Combo
Kev replied to Kev's topic in Amps and Cabs For Sale
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Bona: Il Nuovo Bona Vol.B: In Chiave di Basso Ricordi Hal Leonard "Il Nuovo Bona Vol.B: In Chiave di Basso" is a famous music theory and solfeggio method by composer Pasquale Bona, published by Ricordi, specifically focused on reading and learning in the bass clef (or F clef), essential for instrumentalists such as pianists, cellists, bassists and organists, offering progressive exercises for rhythmic and melodic division.
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I’ve been there, although ironically the worst gig I ever did (reminiscent of the famous Richie Benaud quote ‘there’s only three things wrong with English Cricket, they can’t bat, they can’t bowl, and they can’t field’, albeit in my case I was out of tune, out of time, and out of style) I was asked to join a Jazz Trio by a member of the audience who turned out to be quite well known….🤔
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A festive conundrum for you
Jean-Luc Pickguard replied to Jean-Luc Pickguard's topic in General Discussion
The truss rod is at the neck heel, however unlike the JMJ mustang there is no cutout in the body & pickguard to facilitate an easy adjustment using the StewMac truss rod tool (pic below) so you have to practically take the neck off to adjust it — a bit of a hassle if you don't get it right first time, and probably the reason why the bass has sat in its case for a few weeks before I got around to setting it up. The improvised card tool in question was not used in this process though. -
The wider the source the narrower the horizontal dispersion. It's why midranges are smaller than woofers, and tweeters are smaller than midranges. Side by side placement reduces the horizontal dispersion by half compared to vertical at the lower end, and raises the potential for combing at the upper end.
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Phase shifts like that are normal, and don't matter, as you can't hear them. The dip and shift in the crossover region could be polarity related, the only way to know is to reverse the tweeter polarity and test again. It could also be time align related, which can only be fixed by moving the tweeter to get the acoustic centers of the tweeter and woofer the same. The shift at 100 Hz is probably port related, possibly indicating port tuning at 100 Hz. The 200 Hz dip could be from floor bounce. The best way to take measurements is outdoors, well away from boundaries, taking two measurements. The first is ground plane, with the mic a few cm above the ground. The second is with the cab on its back, the mic suspended above. This measurement will have a dip where the wave reflected off the ground meets the front wave at 180 degrees, the result of the baffle being 1/4 wavelength from the ground. The two are spliced to get the final result. You can do it in one step by digging a hole in the ground, putting the speaker in facing up, back filled with the baffle flush to the ground. It's how Roger Russell of McIntosh used to take measurements. When you take measurements 1/6 octave smoothing is preferred, as that's the limit of what you can hear.
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Here's a chart that I made for dep gigs this summer. Not much to write home about, but it might save people time and it's good 16th-note rhythm reading practice: Coldplay - 'Adventure of a Lifetime' transcription
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A festive conundrum for you
Piers_Williamson replied to Jean-Luc Pickguard's topic in General Discussion
Template for a mousehole in the skirting board? -
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Mismatched top, would this bother you? Cort space 4
Steve Browning replied to 41Hz's topic in General Discussion
No matter the price point. It does seem so odd (to me) that someone would put those two bits together and think it looked ok.
