Bag End InfraSub-18 Pro, PMM-8 Monitors Review

Jun 1, 2011 9:00 AM, By Joe Hannigan

TURNKEY, TIME-ALIGNED SYSTEM OFFERS STELLAR, FULL-RANGE SOUND

Polls


Mix Regional

The Mix Regional section for Mix's September 2014 issue focuses on Miami. Send us your studio news: updates, sessions, new rooms, plus club performances and installations. Let the Mix audience know what is going on! Send photos and descriptions to mixeditorial@nbmedia.com.

From longtime speaker manufacturer Bag End comes a new package designed for a variety of mixing, mastering and reference applications: the InfraSub-18 PRO and PMM-8 powered monitors. Designed to work as an integrated, self-powered turnkey system, this combination of workhorse speakers offers a host of useful features with loads of solid power and crisp detail.

All of Bag End’s monitors use Ed Long’s Time Align principles of design.

All of Bag End’s monitors use Ed Long’s Time Align principles of design.

FROM THE GROUND UP
The InfraSub-18 PRO is the big brother to the original InfraSub-12, which I reviewed in Mix May 2004, and subsequently purchased. The InfraSub-18 PRO has all of the same basic features of the InfraSub-12; it’s a self-powered sub with an 18-inch cone loudspeaker in a sealed enclosure, using the same preamp and power amp as the InfraSub-12 PRO (500 watts), with an extended operating frequency down to 8 Hz. The amplifier also includes a built-in INFRA dual integrator providing a flat response down to 8 Hz, well below the audible range of human hearing. In many cases, one feels it as much as hears it. Like its smaller sib, the InfraSub-18 PRO is a seamless, smooth performer, with power to spare for the lowest part of the listening spectrum.

Included with the unit is the Status monitor, a handy visual cue device—connected via its own XLR cable to the back of the cabinet—to show “on” status, as well as dynamic filter threshold, should you push it hard enough. (Again, there’s power to spare; I rarely drove my test unit beyond the green “on” status indicator.)

Designed to work as the bedrock for a 2.1 or 5.1 system, the InfraSub-18 features a “passthrough” automatic crossover/LFE feed to connect from a console to the upper PMM8 speakers. Simply connect L and R, or LRC, Ls/Rs cables to the rear XLR male connectors, and then connect another set of XLRs out to the PMM8s (or other powered speakers of your choice).

Level for the InfraSub-18 is set via two rotary pots on the rear, and a variety of other useful functions (polarity, -10dB attenuation, etc.) are also provided.

PMM-8 TIME-ALIGN™ POWERED SPEAKERS
The PMM-8s are the crown jewels of the system, featuring a single coaxial driver with separate 8-inch mid and 1.75-inch aluminum-compression HF drivers, passively crossing over at 2.9 kHz. This self-powered (rated at 150W nominal, 600W peak), time-aligned unit has XLR inputs (from the InfraSub-18 or directly from a console output with similar connectors) and a dedicated Neutrik Speakon AC power connector. (A very smart precaution; there’s never a possibility of plugging the wrong cable into the wrong socket!)

Additional features include front panel rocker switches for power, polarity reverse (brilliant idea!) and a 3-position EQ level switch for near-field/final (brightest, for listening to finished material from a distance), NFM™/Original (least-bright setting; no boost or attenuation of the material) and MFM™/Final and Distant/Original (medium brightness/middle setting). The subtle but important 1.5dB shift in HF levels hinge at 5 kHz make a clear difference, depending on your sitting position, work habits and overall speaker placement. There’s a tuned oval port on the bottom front of the cabinet, normally hidden by the detachable (and all but sonically transparent) black grille cloth. The PMM-8s roll off fairly quickly below 100 Hz, which mates very nicely with either the InfraSub-12 or -18.

All of Bag End’s monitors use Ed Long’s Time Align principles of design, which include physically lining up the drivers and adjusting driver and crossover delays. When a system is aligned, the fundamental and overtone timing is the same at the listening position as they are at the input of the monitor.






Acceptable Use Policy
blog comments powered by Disqus

Mix Books

Modern Recording and Mixing

This 2-DVD set will show you how the best in the music industry set up a studio to make world-class records. Regardless of what gear you are using, the information you'll find here will allow you to take advantage of decades of expert knowledge. Order now $39.95

Mastering Cubase 4

Electronic Musician magazine and Thomson Course Technology PTR have joined forces again to create the second volume in their Personal Studio Series, Mastering Steinberg's Cubase(tm). Edited and produced by the staff of Electronic Musician, this special issue is not only a must-read for users of Cubase(tm) software, but it also delivers essential information for anyone recording/producing music in a personal-studio. Order now $12.95

Newsletters

MixLine

Delivered straight to your inbox every other week, MixLine takes you straight into the studio, with new product announcements, industry news, upcoming events, recent recording/post projects and much more. Click here to read the latest edition; sign up here.

MixLine Live

Delivered straight to your inbox every other week, MixLine Live takes you on the road with today's hottest tours, new sound reinforcement professional products, recent installs, industry news and much more. Click here to read the latest edition; sign up here.

[an error occurred while processing this directive]

The Wire, a virtual press conference offering postings of the latest gear and music news, direct from the source. Visit the The Wire for the latest press postings.