Headset standards: EC29 vs EC30

Asked by: Lynn Jones

What do the numbers on headsets mean?

The identifier starts off with two letters which signify the type of headset it is. “EC” stands for External Cup, and “ZS” stands for Zero Stack, “IS” Stands for Integrated System. The numbers following the two letters signify the headtube and fork dimensions. Take this headset for example: ZS44/28.6 EC44/40.

What is standard size of bike headset?

The standard sizes are 1 inch, 1 1/8 inch, 1.25 inch and 1.5 inch steerers. You may occasionally come across a 1-inch threadless steerer, but you’re more likely to find a threaded steerer in this size. 1 1/8 inch threaded steerers are, however, quite common.

What are the different types of bicycle headsets?

This article will review the following headset types:

Conventional Threaded.
Conventional Threadless.
Low Profile (Zero-Stack, or “Internal”)
Integrated System (IS) (angular contact without cups)
Microtech®
Columbus®-type (integrated — angular contact)
Campagnolo® Hiddenset (integrated — angular contact)

How do I know what headset bearings I need?

Measure the widest portion of the inside of the bearing while keeping the tool square to the flat edge of the inner bearing race. This is the internal diameter. Now measure the widest portion of the outside of the bearing while keeping the tool square to the flat edge of the outer bearing race.

Is a higher frequency response better?

The first number in a frequency response spec refers to the deepest bass frequency the headphone can reproduce, the lower the number the better; and the second number refers to the highest frequency the headphone is capable of, and the higher the better.

What is the best Hz for headphones?

20 to 20,000 Hz

20 to 20,000 Hz is generally accepted as the audible frequency range, this is the standard for most headphones. Some headphones offer wider ranges (for example, 5 to 33,000 Hz), but better frequency response does not always mean better sound quality.

What is an EC34 headset?

The EC34│EC44 headset is designed to fit frames with tapered head tubes and can accommodate straight and tapered fork steerers with the appropriate crown race.

Are all threaded headsets the same size?

Threaded headset sizes are designated by the outer diameter of the steering column. This can seem confusing, because the head cups do not measure the named standard. The threaded standards are 1 inch, 1-1/8 inch, and 1-1/4 inch headsets. The various standards are generally not interchangeable.

What is a JIS headset?

JIS headsets are used mostly on older Japanese frames and on Keirin racing frames. They differ from ISO headsets in having a 27.0mm crown race and 30.0mm pressed race. VO makes a JIS headset. BMX-sized headsets were used on some older lower quality American and Japanese frames and on BMX bikes.

What is the difference between integrated and semi integrated headsets?

An integrated headset involves the top and bottom cartridge bearings being pressed directly into your frame’s headtube. Internal headsets (also called semi-integrated) are a bit different. They involve the cups being pressed into an oversized headtube and inside those cups rest the bearings.

Are Crown races headset specific?

NO! Not all headset cups and crown races are the same. There are different angles on the bearings both the inner and outer surfaces. You need to make sure that the cups and races match the bearings.

What is tapered and non tapered headset?

A non-tapered fork fits a standard 1-1/8” head tube (top and bottom), whereas a tapered fork is designed to fit the taper which measures 1.5” ie. 1-1/8” top, and 1.5” bottom. You can fit a straight fork to a tapered head tube with an adapter, a crown race reducer.

What specs should I look for when buying headphones?

Some specs you should look for when buying new headphones are:

Headphone type (in-ear, over-ear, closed-back, wireless, etc)
Wearing style.
Battery life.
Cabel length.
Driver size.
Frequency Response.
Impedance.
Sensitivity.

What Hz is best for music?

Context: The current reference frequency for tuning musical instruments is 440 Hz. Some theorists and musicians claim that the 432 Hz tuning has better effects on the human body, but there are no scientific studies that support this hypothesis.

How important is frequency response in headphones?

Quote from video:

How do we classify a headset?

Generally, headphone form factors can be divided into four separate categories: circumaural (over-ear), supra-aural (on-ear), earbud and in-ear.

What is better over ear or on ear headphones?

Over-Ear Headphones: Which One is Better? There’s no wrong choice, but if you value battery life and portability, on-ear headphones are probably the better choice. If you want slightly better audio quality, active noise cancellation, and don’t mind heavier headphones, you should get an over-ear pair.

What’s the difference between headphones and headsets?

Answer: Headphones is a term used for a device that features two drivers connected by a headband and worn over the head. It’s also used as an umbrella term that encompasses all the other terms. Headsets are basically headphones with microphones.

Can you use any headset on a Polycom phone?

Polycom phones are compatible with a number of different headset types, including analog, USB, electronic hookswitch (EHS), and Bluetooth headsets.

How do I get my headset to work on my Polycom phone?

Enable Headset Memory Mode on Polycom phones

Press the Menu button.
Go to Settings.
Select Basic.
Select Preferences.
Select Headset.
Select Headset Memory Mode.
Select the box next to Enabled.

How do I connect headphones to my Polycom phone?

To connect a supported headset to your phone:

Plug one end of the EHS adapter or cable into the serial port on the back of your phone.
Plug the other end into the headset base unit.
Connect the headset’s RJ-9 connector to the headset jack on the back of the phone.