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PaperBoat

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My JBL 305p MKii's sell sheet telling this ↓
IMG_20220727_151841.jpg

What does it mean?
 

staticV3

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My JBL 305p MKii's sell sheet telling this ↓
View attachment 220722
What does it mean?
The 305p MKII has two input sensitivity settings: -10dBV and +4dBu
Screenshot_20220727-130425.jpg
At -10dBV you can input a maximum of 2.0Vrms (6dBV) before the input clips.
At +4dBu you can input a maximum of 8.0Vrms (20.3dBu) before the input clips.
 
OP
PaperBoat

PaperBoat

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The 305p MKII has two input sensitivity settings: -10dBV and +4dBu
View attachment 220727
At -10dBV you can input a maximum of 2.0Vrms (6dBV) before the input clips.
At +4dBu you can input a maximum of 8.0Vrms (20.3dBu) before the input clips.
This means if I push 2Vrms in -10dBV input it will give the same SPL as 8Vrms in +4dBu input? +4dBu is less sensitive than -10dBV?
Screenshot_2022-07-27-17-01-18-54.png
 

FrantzM

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To
My JBL 305p MKii's sell sheet telling this ↓
View attachment 220722
What does it mean?

To sum it up in a digestible fashion:
The - 10 dBV is for consumer type components. A regular preamp, DAC, etc ... These are usually single ended, i-e they have usually RCA outputs, but you find more and ore output with 3.5 mm jack... these are most often stereo. So -10 dBV is for those, output at max, 2 Volts.

The +4dBu is for "professional" items, these usually have an XLR or TSR as connectors. They typically output more voltage than consumer products... Sometimes up >10 Volts. These are also balanced. The 305 inputs are balanced but you can use Single Ended (RCA) through the use of converters.

If you are going to use these with consumer type equipment, say a consumer preamp or DAC or AVR with pre-out then you need to :
  1. Switch to -10 dbV:
  2. Use a RCA to XLR converters/cables such as these:
71ToRiTb9PL._AC_SL1500_.jpg


or id you are going to use a Professional Preamp/Mixer/DAC or Balanced ones...
  1. You switch to +4dBu
  2. Use cables such as these:
71gqwiY5WlL._AC_SL1500_.jpg


or those that are also balanced but TRS
71CPG2fhzaL._AC_SL1500_.jpg


Hope it makes sense.

Peace.
 

Oestepa

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Use a RCA to XLR converters/cables such as these:
the Quick Setup Guide advice to connect consumer equipment with unbalanced outputs to the ¼" TRS input of the speaker using unbalanced signal cables.
 

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MrOtto

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So you can use RCA to TRS or TS cables? TS is for unbalanced.
Edit, manual says to use 1/4" TS plug:
1669720108642.png
 
Last edited:
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