NOT using Bluetooth.īelow the frequency response of the E40BT ( Left, Right)īass extension is there. NOTE: All measurements were done using the 3.5mm TRS cable. This headphone does not sound rolled off on either side. The treble is not peaky nor sharp and has a good level but is not of excellent quality. Bass is muddy/boxy and does not blend in well with the mids. Voices sound present because of this but instruments have something ‘weird’ over it. The slow rise in the frequency response from 500Hz to 3kHz makes the mids have a ‘clear’ character. This can make a lot of music sound a bit ‘hollow’ and ‘fat’ in the bass. It does produce deep lows but not on the level young people seem to like.Ī problem area is the elevated 200Hz area. It also does not have the typical sound young people are looking for (meaning big bass and subdued mids and treble). This headphone clearly is not targeted at music enthusiasts.
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The efficiency is quite high so it will play pretty loud from portable equipment such as phones and tablets.Īccessories: 3.5 mm TRS headphone cable, USB charging cable, manual They can swivel from back to front but not tilt up and down.īecause of this the headphone may not sit well on everyone’s head that well.Ī good seal is very important with this headphone to get deep bass.īreaking the seal because of poor fit or shape of the ear (pinna) means bass will be gone.Ī microphone is incorporated in the left cup for taking calls in BT mode. Not tested.įortunately this headphone can also be used directly with a 3.5mm TRS jack.Īnother good property is that in ‘passive mode’ (cable connected) the headphone still gives sound even when the battery is depleted.Ĭomfort is not very high.
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It can work up to 16 hours in bluetooth mode acc. It has bluetooth functionality which did not work that well. The cups can fold flat and can collaps into the headband. It is available in 4 colors for around € 100. The JBL Synchros E40 BT is a closed dynamic bluetooth headphone. The bigger the deviation the stronger the effect.īelow an aid to help determining the sound character of headphones with relation to the frequency response. Deviations in different severities at different frequency bands have an effect on the sound character. A horizontal line shows audible neutral response in the plots on this website. The shape of your head, bone structure, pad size, pad ‘softness, (compliance), hair or no hair and or wearing glasses may (drastically) change the frequency response of some headphones, so… your personal experience may differ substantially from these plots.įrequency response (tonal balance) is the most sound-determining aspect of headphones. This is described HERE in more detail.Ī ‘ horizontal‘ frequency response curve on the shown frequency response plots on this website thus indicates a perceived ‘flat’ tonal signature.ĪLL measurements are made with a good SEAL on a flatbed measurement rig.
I do not use smoothing because some info about sound quality is lost when plots are smoothed.Īside from a small correction of the microphone itself also some correction in the lowest frequencies is applied to the plots to compensate for the perceived loss of bass when using headphones. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and ‘wiggles’. NO SMOOTHING is applied to the shown plots. power, efficiency, levels, balanced, impedance.Foobar 2000 for Dummies (Part 2) – Playing DSD – SACD plugin (0.9.x and 1.x.x Series).Foobar 2000 for Dummies (Part 1) – General Setup.Creative Sound BlasterX H7 (Tournament).Subjectivist, Objectivist or Inbetweenivist ? (website links).
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