Uniden R1 External Audio Output Level LOW!?

kwthom

n00b retiree
Intermediate User
Joined
Apr 25, 2018
Messages
272
Reaction score
218
Location
Jaynes Station, AZ
Of course, this is happening two days before a two week long trip departure...

So, the R1 works great. Played around in the car, just to learn sounds, settings, etc. No problem. Audio out nice and loud. Updated firmware to the latest (1.37) for the R1. Smokey Bear gets sniffed out pretty good with this!

Out of the car, and onto the bike. Now bike sound was originally set up for an Escort 8500x50, then fed into an Amplirider. I bought a 1:1 radar detector isolation cord when I purchased the Amplirider. The RD and the BlueStreak (BT transceiver) outputs get mixed in the Amplirider, then on to the Goldwing aux input.

At first, I thought the output from the external jack (same as Escort, from what little I have read) was really, REALLY loud, so modified the OUTPUT of the radar detector isolation cord (input to Amplirider), added a small resistor T attenuator pad.

It was very, VERY quiet - too quiet, gain from AmpliRider just not enough - or did I smoke it???

RMA'd the first one back (bought thru Axxxxx) - second one showed up yesterday. Again, updated firmware to the latest (1.37) for the R1.

Again, audio thru speaker is fine, but it's still really really low using the audio jack.

I ran the mono output from the R1 into an amp I have in the garage, still seems as if the output audio is extremely anemic on these things - especially compared to the Escort!

I've yet to stumble onto anything here in the form with a couple of (feeble) searches, but are there known inherent issues with the audio outputs on these? Makes for using them on a motorcycle in a stealth location darn near impossible, but...

I looked at Marc Parnes' web page; apparently to make the R1/R3 work with a Visual Alert, it seems as if he's adding a pigtail directly off the speaker.

Odd. That implies that there's an issue with levels supplied?

Ideas????
 

jnez367

PSL +5
Intermediate User
Joined
May 17, 2015
Messages
692
Reaction score
1,094
I am sure someone else will have more ideas. I was thinking possible impedance issue. Checked the R3 manual online, I cannot find impedance specification. Sounds like you have experience with amps, so you may have rule this out.
 

5port

Learning to Fly
Beginner User
Premium Member
Joined
Oct 28, 2015
Messages
58
Reaction score
43
Location
New York
The manual says that the ext audio jack is for headphones only. This means maybe 150 mw of audio at best. Marc seems to be running a pigtail off the speaker to access a higher level of audio (at a lower impedance). From the manual below:

-------------------------------------------------------------------------------------------------------------------------------------
ELEMENT

WHAT IT DOES

Eagle Eye

Provides a 360° monitoring radius.

Latch Slot

Insert the bracket latch into this slot.

Mini USB

Provides PC connection for data updates.
************************************
Audio Jack

Plug in headset.
*************************************
Eject

Press to release the bracket latch.

Power Jack

Plug the 12V Power Cord here.

Signal Strength

Displays received signal strength (5 levels).
 
Last edited:

kwthom

n00b retiree
Intermediate User
Joined
Apr 25, 2018
Messages
272
Reaction score
218
Location
Jaynes Station, AZ
I am sure someone else will have more ideas. I was thinking possible impedance issue. Checked the R3 manual online, I cannot find impedance specification. Sounds like you have experience with amps, so you may have rule this out.
Well, it could be an impedance (of the RD...) issue, but one would think that it'd be similar in operation; after all, what other reason is there for having an audio access jack like this on a RD?? Now, after having just looked at a tear-down image of the R1, big bunches of surface mount technology can mean some lower power levels than was done 'back in the day' with good old-fashioned discrete components.
I'm just looking for someone that's successfully used this output, and in what configuration was it used.

The manual says that the ext audio jack is for headphones only. This means maybe 150 mw of audio at best. Marc seems to be running a pigtail off the speaker to access a higher level of audio (at a lower impedance). <...>
Agreed, which is why I was looking at the tear-down images - just not a lot of room in there, not sure I'm wanting to try that just yet.
 

s1LverfoxS4

Learning to Drive
General User
Joined
Apr 29, 2018
Messages
40
Reaction score
54
I don't have an answer for you, but I use a Parnes LED Visual Alert Device on my Bike, via the 3.5mm output jack on my RX65.
I LOVE this thing. You can't MISS it in bright daylight, and can adjust the alert brightness with the RD volume switch up or down.

Interesting the you are seeing the output level being low on the R1.
Logic would dictate that a 3.5 jack would be outputting the same level of power, as I believe it's a standard port, and would be effected more by the resistance of the output device, or fault in the wiring maybe??

Interesting though, that the website makes reference to wiring a pigtail onto the speaker for the Parnes Alert. I don't even KNOW what that looks like???
And If I have to break open the RD case to solder and wire a cheesy connector to the speaker, it's a total deal breaker.

And then again -- with audio alerts for the GPS tracking and updated pins, i might just need to buy a bluetooth dongle and pipe-in the alerts to my helmet speakers now.

Sheesh......this is getting complicated
 

dkgreek

Learning to Drive
General User
Joined
Nov 4, 2014
Messages
12
Reaction score
5
I don't have an answer for you, but I use a Parnes LED Visual Alert Device on my Bike, via the 3.5mm output jack on my RX65.
I LOVE this thing. You can't MISS it in bright daylight, and can adjust the alert brightness with the RD volume switch up or down.

Interesting the you are seeing the output level being low on the R1.
Logic would dictate that a 3.5 jack would be outputting the same level of power, as I believe it's a standard port, and would be effected more by the resistance of the output device, or fault in the wiring maybe??

Interesting though, that the website makes reference to wiring a pigtail onto the speaker for the Parnes Alert. I don't even KNOW what that looks like???
And If I have to break open the RD case to solder and wire a cheesy connector to the speaker, it's a total deal breaker.

And then again -- with audio alerts for the GPS tracking and updated pins, i might just need to buy a bluetooth dongle and pipe-in the alerts to my helmet speakers now.

Sheesh......this is getting complicated
Yep. Complicated. I'd love to know if you come up with anything.
 

s1LverfoxS4

Learning to Drive
General User
Joined
Apr 29, 2018
Messages
40
Reaction score
54
Marc has been on vacation since the first of the month.
Back in on Monday.
Going to call him and see what the dealio is with the R1/R3 output and this "pigtail".
I'll report back.

sfx
 
Last edited:

TommyT53

Learning to Fly
Beginner User
Joined
Nov 2, 2015
Messages
63
Reaction score
37
I have an R3 and the external audio jack is worthless. I have tried different mono earbuds and the alerts are barely audible.

When I had my Redline the audio jack worked just fine. I drive a convertible and play the music loud sometimes...very disappointed in the inability of the R3 to push sound thru the jack.
 

kwthom

n00b retiree
Intermediate User
Joined
Apr 25, 2018
Messages
272
Reaction score
218
Location
Jaynes Station, AZ
I have an R3 and the external audio jack is worthless. I have tried different mono earbuds and the alerts are barely audible.

When I had my Redline the audio jack worked just fine. I drive a convertible and play the music loud sometimes...very disappointed in the inability of the R3 to push sound thru the jack.
Okay, so that means this is probably normal for the R1/R3...and that's a big first step in getting a resolution. Now, not too certain why the design didn't take many other RD's out there, that actually *do* push a stronger line-level output from that 3.5mm jack.

This can be cured - at least in my application - by amplification.
 

s1LverfoxS4

Learning to Drive
General User
Joined
Apr 29, 2018
Messages
40
Reaction score
54
OK:
I spoke with Marc Parnes today.
He said the output level of the 3.5mm jack on the Uniden(s) is too low to drive his LED's.
I didn't ask how low, but he said that in order for his visual alert to work with either R1 or R3 he DOES indeed need to splice a pigtail adaptor onto the speaker leads, and Drill a hole in the chassis, to run the pigtail lead out of the RD.

I asked about warranty, and we BOTH had a good laugh.

He said that he has done ALOT of these RD's for customers, in this manner, so that his visual alert can be driven properly.
But obviously, uniden might not be too pleased with such a tampering.

i guess the choice to modify in this manner, is up to the owner. After the first year of warranty is done, that would certainly be a better time to not fear alteration, but again - up to the owner.

i remain undecided. However, I REALLY like using the visual alert while riding my motorcycle.

sfx
 
Last edited:

kwthom

n00b retiree
Intermediate User
Joined
Apr 25, 2018
Messages
272
Reaction score
218
Location
Jaynes Station, AZ
Thanks for the confirmation on that...

I'm considering a small audio amplifier to boost the level to an appropriate amount.

All of this is capable of being hidden in my motorcycle fairing.
 

s1LverfoxS4

Learning to Drive
General User
Joined
Apr 29, 2018
Messages
40
Reaction score
54
Thanks for the confirmation on that...

I'm considering a small audio amplifier to boost the level to an appropriate amount.

All of this is capable of being hidden in my motorcycle fairing.
I'm curious how you'll do this.....but I'm not overly interested in complicating this process on my bike, or car.
A bt option would make this simpler as well. I wonder if the Valentine Connection plug-in would solve this??
This just made my decision on what to buy that much harder.

sfx
 
Last edited:

kwthom

n00b retiree
Intermediate User
Joined
Apr 25, 2018
Messages
272
Reaction score
218
Location
Jaynes Station, AZ
I'm curious how you'll do this.....but I'm not overly interested in complicating this process on my bike, or car.
A bt option would make this simpler as well. I wonder if the Valentine Connection plug-in would solve this??
This just made my decision on what to buy that much harder.

gr
As a retiree, I have a lot of time to futz around with a solution - think I may experiment a bit to see how it would work. :D

I'm not familiar with the Valentine Connection.

Essentially, a small monophonic preamplifier (I have my eye on a specific DIY kit, rather than the PITA of designing one...) that I'll also incorporate an audio isolation transformer that'll boost the level to what I want it to be.

This will drive a second amplifier that is also mixing in the BT audio from my cell phone. All of that audio is fed to my ears.
 

s1LverfoxS4

Learning to Drive
General User
Joined
Apr 29, 2018
Messages
40
Reaction score
54
Marc told me the output level of the Uniden was literally unmeasureable, it was so low - and too low to even drive a few LED's.

Something to do with switching the output to discreet circuitry or some such.

I'm a little torn on what I'm going to do, but I did in fact, buy an R3 today! yay me.

Please post up your final solution, I'll be interested to see how it all works.

sfx
 

TommyT53

Learning to Fly
Beginner User
Joined
Nov 2, 2015
Messages
63
Reaction score
37
Shame on Uniden for having an audio jack that doesn't work with an output level that is unmeasurable. Having it on the unit is a scam.
 

kwthom

n00b retiree
Intermediate User
Joined
Apr 25, 2018
Messages
272
Reaction score
218
Location
Jaynes Station, AZ
Shame on Uniden for having an audio jack that doesn't work with an output level that is unmeasurable. Having it on the unit is a scam.
I'm not sure I can completely throw shade on whoever did the design work on the audio portion. Someone looked at specs, stated all we need is 'line level' out and put it on a 3.5mm mono jack.

Since 'line level' can be at such a wide limit (300mV to 2V), I'm sure the design team *didn't* compare what's already on the market, and state "we should come close to this!"

As far as Marc P.'s comment about it being unmeasurable, you can't measure it with a $20 handheld voltmeter in AC mode, true. This I can confirm. I'm certain it's measureable with an instrument I don't have - an oscilloscope.
 

JustinP

PSL +PSL
Advanced User
Joined
Mar 18, 2016
Messages
2,573
Reaction score
5,099
I've tried using the R1 with my MixIt2 amplifier, and it does not get any gain over directly driving my helmet speakers. I'm going to be modifying mine to add a plug off the speaker wire.
 

schissler

Banned
Banned User
General User
Premium Member
Joined
Apr 29, 2014
Messages
2,933
Reaction score
3,071
Location
Alberta/Nevada
Had the same problem. Tested with a JBL bluetooth speaker and it was super loud so I added the Uniden external speaker for their CB radios and couldn't hear it worth a damn. Same with the Escort speaker. Mono>Stereo Adapter fixed it... There's another thread on it. I forget which way it went but I'm sure it was Mono>Stereo adapter then plug the external speaker into that.
 
Last edited:

JustinP

PSL +PSL
Advanced User
Joined
Mar 18, 2016
Messages
2,573
Reaction score
5,099
Had the same problem. Tested with a JBL bluetooth speaker and it was super loud so I added the Uniden external speaker for their CB radios and couldn't hear it worth a damn. Same with the Escort speaker. Mono>Stereo Adapter fixed it... There's another thread on it. I forget which way it went but I'm sure it was Mono>Stereo adapter then plug the external speaker into that.
The output from the R is stereo, so it should be stereo to mono adapter if I'm following.
 

Discord Server

Latest threads

Forum statistics

Threads
79,123
Messages
1,204,723
Members
20,088
Latest member
SVRftw
Top