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Product 278415

Crown CM-311A Headset Mic With Beltpack   

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If you want to maintain eye contact and really play while you sing, the Crown CM-311A Headset Microphone is for you. Electret condenser capsule provi...Click To Read More About This Product

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OVERVIEW

Pro performance under the most demanding conditions.

If you want to maintain eye contact and really play while you sing, the Crown CM-311A Headset Microphone is for you. Electret condenser capsule provides full, clear, distortion-free sound. Gain-before-feedback and isolation are exceptional. Lightweight, rugged, and comfortable, the headband and mic boom are adjustable for any vocalist. Includes a battery/phantom power beltpack.

Designed for touring and live-sound applications, the Crown CM-311A is a rugged head-worn microphone with unequalled performance. It sounds like the best handheld microphones--full, clear, and distortion-free, even with the loudest singers.

The CM-311A is the latest version of the Crown's proprietary Differoid technology. Its cardioid pickup pattern rejects sounds from the rear, such as floor monitors. Its noise-canceling ability rejects sounds at a distance, such as instruments on stage and crowd noise. This results in the CM-311A having outstanding gain-before-feedback and isolation.

Designed for touring and live-sound applications, the Crown CM-311A is a rugged head-worn microphone with unequalled performance. It sounds like the best handheld microphones--full, clear, and distortion-free, even with the loudest singers.

Lightweight and comfortable, the mic's headband and boom adjust to fit any singer. An included pop filter greatly reduces breath noise and pops. Because of the boom's unique behind-the-ear design, it does not cover up the singer's face.

The CM-311A is powered by a 9V battery or phantom power. It has a battery belt pack with an on/off switch, a programmable mic on/off switch, and a "Mic On" LED.

Consumer Alert:

Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCCs wireless microphone website at: www.fcc.gov/cgb/wirelessmicrophones.

FEATURES
  • Full, clear, distortion-free sound
  • Outstanding gain-before-feedback and isolation
  • Battery/phantom belt pack

Order today and enjoy the convenience and freedom of the CM-311A Headset Microphone.

SPECIFICATIONS

CM-311A Headset Mic With Beltpack

  • Transducer type: Electret condenser.
    Frequency response (typical): 50 Hz to 17,000 Hz
    Polar pattern: Cardioid
    Impedance: 75 ohms balanced.
    Recommended load impedance:, 1000 ohms or greater.
    Open-circuit sensitivity, typical, close-talking: 4 mV/Pa (”48 dB re 1V/Pa.
    Power sensitivity, typical, close-talking: 42.5 dB re 1 mW/Pa,
    Equivalent noise level (self noise): 26 dB SPL typical (0 dB = 0.0002 dyne/cm2), A-weighted. S/N ratio: 68 dB at 94 dB SPL.
    Maximum SPL: 148 dB SPL produces 3% THD.
    Operating voltage: 9V DC internal alkaline battery or 18-48V phantom power.
    Polarity: Positive pressure on diaphragm produces positive voltage on CM-311A XLR pin 2 with respect to pin 3.
    Current drain: 6.5 mA nominal.
    Battery life: 85 hours
    Off-attenuation: 70 dB.
    Output connectors: CM-311A, 3-pin pro audio (XLR type).
    Cables): 2-conductor shielded, unbalanced cable, 42-inches (106.68 cm) from headband to battery pack. Use 2-conductor shielded mic cable (not included) between XLR connector and mixer mic input.
    Materials: High-impact plastic mic housing, brass boom, steel wire headband, high-impact plastic and steel battery pack.
    Finish: Satin black.
    Net weight: Head-worn mic, 2.1 oz (61 g). Belt pack and battery, 6.1 oz (173g).
    Dimensions: Headband 5.5-in. (13.97 cm) diameter, adjustable. Boom approximately 7 in. (17.78 cm) x 3 in. (7.62 cm). See Figs. 3 and 4.
    Included accessories: Microphone carrying case, WS-6 foam pop filter, clothing clip.
    Optional accessories: PH-1A phantom power supply (1 channel, AC-adapter powered). WS-14 accessory windscreen.
Reviews
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Review Snapshot

by PowerReviews
CrownCM-311A Headset Mic With Beltpack
 
4.2

(based on 21 reviews)

Ratings Distribution

  • 5 Stars

     

    (14)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

Most Liked Positive Review

 

Drummer worn

I've been using this mic as an weekend musician for about a year. As a singing drummer, a head mic was a must to keep my motions natural and my visibility unrestricted. I...Read complete review

I've been using this mic as an weekend musician for about a year. As a singing drummer, a head mic was a must to keep my motions natural and my visibility unrestricted. I run it through an ART Tube MP Studio Preamp (for the phantom power and a signal boost). This set-up performs great. In fact, I personally think it sounds better then the Shure 58s that the guitar players use. And I'd say that its on par with the Shure Beta 87A that one other band member uses. I've never once had a feed back problem.The wire "head band" design is a bit questionable; but it is functional. Basically, you hand bend the wire frame to match the contour of your head, and then you trim any excess off (a tin-snip is handy for this). It's designed to fit one person, and one person only. Any adjustment to get the mic boom properly positioned can be accomplished with a thumbscrew. One you have it where you want, simple tighten the screw (finger tight). Once you've got it set-up, you should never have to make an adjustment again. Just throw it around your ears and you're ready. On a side note... With a slight amount of pressure, the booms design still allow you to rotate the mic away from your mouth when you don't want it there (no loosening of any hardware required). And then simply rotate it back when you need it.I have not used the 9v battery compartment, so I am unable to comment on the functionality of the battery phantom power. The on-off switch on the pack is a great bonus, though.My only real complaint is that I wish they made the cord from the mic to the battery pack a bit longer. With the pack clipped to my belt and running up my back, the cord is in full tension when I look downwards too far.

VS

Most Liked Negative Review

 

Great if it would stay together!

I've owned 4 of these in the past 6 years... and I'm finally saying "enough already!" The concept of a great headset mic is SO appealing to me...Read complete review

I've owned 4 of these in the past 6 years... and I'm finally saying "enough already!" The concept of a great headset mic is SO appealing to me (I do a lot of live guitar looping and use a pretty big pedalboard so being able to look around while singing is a HUGE plus). HOWEVER - the element section of these mics will break off the boom without any warning! Seriously - the last one I bought arrived in the brand new packaging including the great super hard plastic molded case. I opened the box and there, in it's original packaging was a brand new CM311a... IN PIECES! The mic element is attached with a very poor quality plastic bracket that seems very brittle/fragile. This latest one arrived from MF already in multiple pieces with absolutely no external damage to the packaging. Of course MF immediately swapped it out for a new one w/some great customer service. However, I've had the replacement for two months now and guess what - the element just fell off (actually it's hanging by the few wires that run the signal out the headband). I was singing, put the unit down for about thirty minutes - during which time it actually was in plain sight - there was no accident, no dropping, no bumping - nothing. I picked it up and the element was dangling loose by the wires.These mics sound phenomenal. There's no doubt about their great gain before feedback, exceptional tone, convenience, etc. But after 35 years of giging, I can say I have also never found a product that was so consistently unreliable. It's great WHILE IT STAYS IN ONE PIECE. Because of this, I am finally giving up and going back to the old trusty SM57 or maybe an Audix OM5 - something that won't let me down long term.

Reviewed by 21 customers

Displaying reviews 1-10

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(1 of 1 customers found this review helpful)

 
5.0

Best headset mic but could be improved

By Peter S Hickey

from Tempe, AZ

See all my reviews

Comments about Crown CM-311A Headset Mic With Beltpack:

The mic itself is excellent. The quality is equivalent to good Shures and the condenser element is a real plus. I used to use the Audio Technica headset and this is MUCH better at suppressing extraneous noise. The headband is so-so. It's kind of a pain to adjust but stays in place once you get it where you want it. You do have to be careful because the thumbscrew can come out entirely and get lost. The little pop filter Crown supplies is worthless and the plastic part on mine broke fairly quickly. I replaced it with one of the pop filters from my Audio Technica and no problems since. The previous comment about the length of the cable from the mic to the battery pack is entirely correct. It definitely needs to be longer. A volume control on the battery pack would also be nice. A 9-volt battery will last a good long time as long as you remember to turn the unit off when not in use. The case is rather poorly designed and it's difficult to get the mic assembly to fit into it properly. This is a good product if you need to use a headset mic but it could definitely use some improvements.

(1 of 1 customers found this review helpful)

 
1.0

Excellent sounding mic but extremely bad construction

By dan reese

from Erie, Pa

Comments about Crown CM-311A Headset Mic With Beltpack:

I've had two of these becuase I have heard nothing else better. However, The cheap plastic parts these are made of crack , split , break , and ultimately fall apart. I just bought one 3 months ago and already the boom adjustment mechanism has broken into pieces. If, they'd fix this , I would never buy another mike. As it stands now , I can't keep paying for a mike sounds excellent but falls apart. I don't treat these things ruff either. After performances it goes back into it's hard plastic case and placed in my own vehicle. I am looking for a good sounding mike now that is better made, anybody have any recommendations ?

(1 of 1 customers found this review helpful)

 
5.0

Great Sound / Bad Fit

By Robert-033hE

from El Paso, TX

Comments about Crown CM-311A Headset Mic With Beltpack:

I have owned several of these mics over the years and I have never had any luck keeping the set screw tight enough to keep the boom in place. I have stripped the treads on everyone of these headsets. As to sound quality, it is probably the best mic I have ever used. I hope Crown will fix this problem.

(1 of 1 customers found this review helpful)

 
4.0

Great mic, A few things I would fix

By My name is Mark/The Nutty Drummer

from Kentucky

Comments about Crown CM-311A Headset Mic With Beltpack:

I have owned 3 of these mic's over the past 13 years. The mic, over all sounds better than most mic's and being a singing drummer, is perfect for my needs. The comments I have read about the head set. It will bend/adjust and is pretty easy to make it fit any head. I have had to retap the set screw on one of mine and replace the wing nut. The problems I have had are: Had to cut a section out of the small cord at the power pack. If I turn it on with the PA on,it just about pops the speakers so I agree with having a Volume control on the power pack. Needs one bad. This last mic, I have found that even with a brand new battery, it fades . If I cut it off and then back on it comes back.This is not good when playing out. Unfortunantly, I am getting ready to buy my fourth one. They do wear out. I now have two that are garbage and the one I have now is just about done. Time for a new one. This is about as honest as I could be about my favorite mic.

 
5.0

Drummer worn

By DonohoKid

from On the Road, US

See all my reviews

Comments about Crown CM-311A Headset Mic With Beltpack:

I've been using this mic as an weekend musician for about a year. As a singing drummer, a head mic was a must to keep my motions natural and my visibility unrestricted. I run it through an ART Tube MP Studio Preamp (for the phantom power and a signal boost). This set-up performs great. In fact, I personally think it sounds better then the Shure 58s that the guitar players use. And I'd say that its on par with the Shure Beta 87A that one other band member uses. I've never once had a feed back problem.The wire "head band" design is a bit questionable; but it is functional. Basically, you hand bend the wire frame to match the contour of your head, and then you trim any excess off (a tin-snip is handy for this). It's designed to fit one person, and one person only. Any adjustment to get the mic boom properly positioned can be accomplished with a thumbscrew. One you have it where you want, simple tighten the screw (finger tight). Once you've got it set-up, you should never have to make an adjustment again. Just throw it around your ears and you're ready. On a side note... With a slight amount of pressure, the booms design still allow you to rotate the mic away from your mouth when you don't want it there (no loosening of any hardware required). And then simply rotate it back when you need it.I have not used the 9v battery compartment, so I am unable to comment on the functionality of the battery phantom power. The on-off switch on the pack is a great bonus, though.My only real complaint is that I wish they made the cord from the mic to the battery pack a bit longer. With the pack clipped to my belt and running up my back, the cord is in full tension when I look downwards too far.

 
5.0

crown headset review

By on staff for HIM / A.C.T.

from Greenville, SC

Comments about Crown CM-311A Headset Mic With Beltpack:

I have used crown mics for over 10 years. I have found them to be very durable on the road. The headsets (we have 2) are the most fragile of their mics but still hold up very well. the only part that has given us any problems is the foam around the mic. one improvement would be a wireless headset. We use the mics in 12 different countries on our band tours. aside from these issues we are very happy with crown mics.

 
5.0

Sound improvement

By Anonymous

from Undisclosed

Comments about Crown CM-311A Headset Mic With Beltpack:

My girlfriend is lead vocalist for an acoustic band covering a wide range of material from tight harmony folk and rock to jazz standards and celtic songs. The 311 has been a marvelous improvement to her vocal clarity and projection and frees her up to play her guitar and celtic harp without dealing with a forest of mics and stands. We have had no feedback problems and nothing but complements about the vocal presentation. Highly recommended.

 
5.0

love this mic

By anon.

from Tampa Bay area, FL.

Comments about Crown CM-311A Headset Mic With Beltpack:

I am a guitar playing, female vocalist. I also play flute. I love this mic for the simple fact that it is unobtrusive and sounds better than any other mic I have ever used in 30+ years of working on the stage. I hope Crown will continue to perfect the head gear and boom so it does not wear out and the screws become damaged so quickly. Even if they don't do some changes, I intend to use THIS MIC as long as I am still singing and playing.

 
5.0

You will not find a better mic for a drummer!

By The Crown Kid

from Rutherfordton, NC

Comments about Crown CM-311A Headset Mic With Beltpack:

I have used this mic in a former band and absolutely loved it. I had to go back to a boom stand and it totally limited my drumming. There would be times that I actually would get a stick lodged in between the cord and the boom extension. Very aggrevating to play this way. I truly does have the best sound for a headset and I got it from Musicians Friend at a price I could not pass up. Thanks again for a superb product.

 
1.0

Back To the Drawing Board

By Engineer Guy

from West Hollywood, CA

See all my reviews

Comments about Crown CM-311A Headset Mic With Beltpack:

It may fit Garth Brooks' head but not mine!This mic sounds fantastic on speech and vocals -- it has great presence -- but the ill-conceived boom mechanism makes it nigh unusable if your head isn't the right circumference. The headband is not adjustable and would not fit my head no matter how much I fiddled with it (OK, my head is too big). The headband has a hook on each end which is supposed to hook over your ear like a pair of eyeglasses worn backwards. Crown really needs to rethink their design; it's a shame such a great-sounding mic is sunk by a bad design of such a simple mechanism. If it weren't for this problem I would rate the mic a 5.

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