Showing posts with label battery. Show all posts
Showing posts with label battery. Show all posts

Saturday, December 3, 2011

Plantronics Cordless Headset Phone (CT14) Review

Plantronics Cordless Headset Phone (CT14)
Average Reviews:

(More customer reviews)
I received apparently one of the first Plantronics CT14 cordless headset telephones, and the bottom line is that there are no big surprises, which means I like the telephone given that I had high expectations in view of my previous experience with Plantronics quality. I did not have either of the previous models, CT12 or CT10, so I cannot compare to those. However at my office for a number of years I have been using a CS10 cordless headset system which works with a multi-line telephone, and I have become quite addicted to using a headset. Based on what I think is an objective test, the audio quality and volume of the CT14 are superb. The way I test that is to call my own voicemail and, during the same call, switch between various telephones while leaving a message. Then I listen to the recorded message, again switching among various telephones. That lets me hear the quality for myself, without relying on a person I am talking to for a report. One characteristic I am pleased to see included is that it is possible to chain dial from recorded numbers in the "phonebook." Thus, when I use a calling card with a 1-800 access number I can then access the PIN in the phonebook to have that dialed as well, followed by the number of the person I am calling. With some other telephones, after you have used the "phonebook" and the call is in progress, the directory scrolling keys change to a different function (e.g. volume) and all the remaining numbers must be dialed by hand. The only negative thing I have to say about the CT14 is that there is a higher level of background noise than I am accustomed to, which I suspect (but do not know for sure) is an inherent part of the DECT 6.0 technology which uses a single frequency band for both sides of the conversation, and uses time division duplex. So, digitally, a lot is going on behind the scenes, and I think I am hearing digital artifacts. This is mitigated somewhat because there is ample volume. So the volume can be turned down, which reduces the background noise, while still being able to hear the person on the other side. At some point I may compare to another DECT 6.0 telephone, or attempt to see what Plantronics has on this issue. (Update: I called Plantronics and a very pleasant rep assured me that the background noise I am hearing is not normal. The background should be quiet. He gave me an RMA number to send back the telephone for a replacement, but before I do that I am going to try the telephone someplace else. It is possible there is some sort of electrical interference unique to my house. Now that I finally have this telephone, I am very reluctant to part with it for any length of time. I really like it.) Earlier complaints regarding the predecessor CT12 concerned interference with Wi-Fi networks, and it seems clear that is not a problem with the CT14. The CT14 operates on a different frequency band (1920-1930 MHz versus 2400-2500 MHz), and that is an advertised feature of the CT14.

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The CT14 Cordless Headset Phone from Plantronics offers the ideal combination of size, mobility and hands-free convenience. The CT14 combines an ultra-portable dial pad that lets you make or take calls up to 300 feet away from the charging base with an integrated noise-canceling headset. This complete DECT 6.0 single-line telephone system wont interfere with wireless networks or home appliances. The dial pad has up to 10 hours of talk time and includes features like Caller ID/Call Waiting, one-touch voicemail access, redial, mute and volume controls. The convertible headset offers two wearing options over-the head stability or over-the-ear convenience.

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Thursday, September 1, 2011

JVC HAW600RF 900 MHz Wireless Stereo Headphones Review

JVC HAW600RF 900 MHz Wireless Stereo Headphones
Average Reviews:

(More customer reviews)
I bought these headphones so I could listen to music and podcasts while doing chores around the house and I am very happy with them. The sound quality is very good and the range is excellent. Despite their size, they are quite comfortable. I have worn them for a maximum of 9 hours at a time between charging and the batteries have lasted just fine. Unlike a couple other reviewers, I have not had any difficulty charging them. (You just line up the socket on the headphones with the charging tabs on the base.) There is occasional static when I'm near the edge of their range or near certain appliances (like a running microwave), but this is to be expected with any 900MHz radio device. All in all, these are very good for the price.

Click Here to see more reviews about: JVC HAW600RF 900 MHz Wireless Stereo Headphones

Tune in the music and tune out your cares with JVC's HA-W600RF. These cordless, rechargeable 900 MHz headphones offer an extended (approximately 164-foot) range and can be used with virtually any audio/video equipment. An automatic tuning feature gives the best quality sound at all times. A Voice Call function grants convenient communication from the base to the headset. Large, 40 mm diaphragms ensure full-bodied sound, while a self-adjusting, comfort-fit headband makes the set easy to wear. The headphones offer automatic on/off (triggered by the presence or absence of audio signal) as well as automatic charging when stationed in their base. Braille-type markings signify left and right ear pieces. Rechargeable Ni-Cad batteries are included.

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Wednesday, July 27, 2011

Plantronics Discovery 640 Bluetooth Cell Phone Headset Review

Plantronics Discovery 640 Bluetooth Cell Phone Headset
Average Reviews:

(More customer reviews)
I've been using this headset for over a month now. In the interest of full disclosure I should state I am a supplier to Plantronics (and other headset manufactures), but am NOT employed by Plantronics (or any headset manufacture). I was given a early production unit before they were generally available.
The Discovery 640 comes with much more than what is pictured here. The complete kit is quite impressive and includes:
The headset (shown)
Small, Med, and Large soft ear inserts (pic shows med insert)
Ear stabilizer loop (not shown in pic)
charging holster
AAA battery holder for charging off battery
cell phone charger adapters for using your cell phone charger (Nokia, Motorola, Sony, and ???)
wall transformer (if you don't want to use the cell phone charger)
All of this is supplied in a stylish metal case that measures about 6"x3"x1".
Pros:
The headset is very comfortable and surprisingly stable without the ear loop installed. After a few minutes you completely forget you are wearing a headset - it is that comfortable.
The sound quality is very good - as one would expect from a Plantronics headset.
While it is certainly the smallest most comfortable headset I have seen, it is the charging holster and AAA battery case that steals the show. With the AAA battery attached, the holster is about the size of a cigar tube or very fat pin. It has a clip for attaching to your shirt pocket or securing inside your purse. The holster provides the dual purpose of storing the headset when you don't want it in your ear, and providing boost charge (via the AAA battery). When done talking, simply drop the headset in the holster to store the headset and recharge the battery.
Oh, and the holster will vibrate if you receive a call while the headset is stored there! Removing the headset will answer the call.
Cons:
Talk time is short (claimed 5 hrs), but using the holster and AAA battery eliminates this problem (15hrs talk time). If I recharge the headset at night and use the AAA booster during the day I have no problem getting though the day - and the AAA battery lasts about a week.
Headset is so small and comfortable it would be easy to loose and not realize it. Of course using the ear stabilizing loop (or keeping it in the holster) would prevent this.
Conclusion:
If you want a small, stylish headset, this is the one! If you want lots of talk time and don't want to use the holster to refresh charge, get the Voyager 510.

Click Here to see more reviews about: Plantronics Discovery 640 Bluetooth Cell Phone Headset

The Plantronics Discovery 640 Bluetooth Cell Phone Headset lets you stay connected like never before. This device features a sleek in-ear design and an innovative pocket charger that gives you up to 15 hours of talk time. The unit's charger is powered by a single AA battery. The Discovery 640 weighs in at only nine grams and it is stylish, comfortable, and convenient. Plantronics combines cutting-edge technology to set a new standard in Bluetooth wireless headsets.
What's in the Box Headset and pocket charger.

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Friday, July 8, 2011

Plantronics Mobile Headset Amplifier with 2.5mm Plug Review

Plantronics Mobile Headset Amplifier with 2.5mm Plug
Average Reviews:

(More customer reviews)
Let me first say that before you buy one of these amps - try adapter cords from the plantronics quick disconnect to plugs first. Chances are you DONT need an amplifier - and this one is no fun. I managed to get my desk voice tube amp (M10 or M12 if I recall) to plug into my cellphone with just an adapter cord - MY speach volume was down a bit but nobody complained, and I used the cell phone's volume to increase the earpiece.
A well designed 2.5 mm amplifier is a great idea. It sure beats a half dozen adapters to hook up a bigger amplifier and expand/reduce the plug size. However the drawbacks outweigh the product design because new phones like the android based phones and the iphone are using 3.5mm 4 terminal plugs for their headsets, which don't work without kludgy adapters on this amp.
Also consider that the amp is powered by a Zinc/Air battery. They start dying the moment they are exposed to air (you pull off a tape seal over an air hole) - regardless if you use them or not. Zinc Air is NOT a problem for a hearing aid, which definitely is going to get its value out of the battery before it dies, but the amplifier should have used a good old standard lithium cell to run it.
As mentioned by others plantronics uses a cut in/ turn off design to save battery power (I have an amp on my desk phone and I can hear when it cuts out during quiet passages. This can create problems that are a royal pain. No signal for a few seconds and you lost your amp. That's not just annoying - its a bad design. A simple on/off switch would have done fine but people would need to remember to shut it off when not in use.
Better idea - go buy a real 3.5 mm amp and cut the 2.5 mm plugs off, solder the wires, and make a real amp work, preferably one not made by plantronics. This one won't work with modern smartphones which are the present workforce on the market with 44 android designs alone.

Click Here to see more reviews about: Plantronics Mobile Headset Amplifier with 2.5mm Plug

The Plantronics MHA100 amplifies incoming sounds up to 24dB and makes words easier to understand with Clarity Power technology. Portable and convenient, the MHA100 can be used in loud environments and by those with mild to moderate hearing loss. The MHA100 is designed for mobile, cordless and cellular phones with a 2.5mm headset jack.

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