My coil tude headphones are so quiet on my SDS100 why?

[wheels1911]

I bought the Stereo to mono plug you guys recommended and it sounds worse than just plugging the coil tube in its self, it sounds all distorted very low volume.


What are my options now?

 

[doctordialtone]

What are my options now?

See here

 

[wheels1911]

See here

So how do I figure out what the correct impedance is?

Sorry I don't even have a clue what impedance means

 

[doctordialtone]

So how do I figure out what the correct impedance is

When you select a pair of headphones, check the specifications to see what the impedance is.

Make sure the impedance specification is 32 ohms or less to match the radio.

 

[doctordialtone]

I don't even have a clue what impedance means

Electrical impedance - Wikipedia

en.wikipedia.org

"In electronics, impedance matching is the practice of designing the input impedance of an electrical load or the output impedance of its corresponding signal source to maximize the power transfer or minimize signal reflection from the load. "

 

[wheels1911]

When you select a pair of headphones, check the specifications to see what the impedance is.

Make sure the impedance specification is 32 ohms or less to match the radio.

How does that look?

Amazon.com: MaximalPower RHF 617-1N 3.5mm RECEIVER/LISTEN ONLY Surveillance Headset Earpiece with Clear Acoustic Coil Tube Earbud Audio Kit For Two-Way Radios, Transceivers and Radio Speaker Mics Jacks: Gateway

Amazon.com: MaximalPower RHF 617-1N 3.5mm RECEIVER/LISTEN ONLY Surveillance Headset Earpiece with Clear Acoustic Coil Tube Earbud Audio Kit For Two-Way Radios, Transceivers and Radio Speaker Mics Jacks: Gateway

www.amazon.com

 

[landradi00]

I have noticed that the output from the SDS100 is significantly less audio gain than the equivalent level on the BC330T

The 330 I can plug into the car Aux jack at 6/10 on the scanner and about 2/3 volume on the car and it's perfect (about as loud as the FM radio or a CD playing would be at 2/3 volume). With the SDS100 I have to turn the volume up to 10 on the scanner and/or up to 90% on the car to get the voice levels comparable on a conventional P25 system (Seattle PD). At that volume, there's a lot of warbly bass noise coming out that wasn't present in the 330. So I think there are two things at play here, one is the demodulation in the SDS has more bass warble, and the AF gain of the headphone jack output is lower than the 330 at comparable volume setting.

 

[doctordialtone]

How does that look?

Looks good!

 

[doctordialtone]

You may need that adapter you bought for the mono plug but let us know how it sounds.


Good luck.