Hi there,
Recently been helping someone with getting better audio output from a TV to a jukebox amp which is driving both a set of internal speakers and a pair of KEF floor standing speakers. We originally fed the TVs headphone output into the amplifiers BGM line input which worked fine but the TVs analog output had a ton of hiss and wasnt great quality. Having used a JDS Labs Atom stack for my headphones for a while and being a fan of it figured the DAC would be a perfect fit for this as the jukebox amp has its own volume controls, plus the dac+ was on sale on jds labs website.
Before buying I double checked the specs, the manual for the jukebox specifies a 2 volt maximum input level for the line inputs, and the chip the line inputs feeds into (LMC1982) indeed specifies a 2.0vrms max input, seems perfect as the atom is a 2vrms output dac (which im pretty sure is standard for cd outputs?)
Anyways it arrives, got it hooked up, really clean signal now however noticed when the speakers are up loud in the jukebox the treble is rather more "harsh" than with the analog output, and at one point the amp just stopped outputting sound entirely until I rebooted the jukebox. Took another look at the datasheet for the LMC1982 and noticed the below:
According to this seems harmonic distortion rises sharply at 2vrms, so wonder if this is what is causing it? (Have basic electrical knowledge however not an expert at reading datasheets so apologies if im reading this wrong)
My question is, is 2vrms too much for the amplifier and if so, is there a way I can attenuate the output/a dac which can take optical in and provide a clean 1vrms output? I almost went for the cheapo amazon toslink dacs but saw that they measure dreadfully in the noise department and feared they wouldnt be much better than the tv analog output, however these do measure (slightly below) 1vrms it seems.
Apologies for the slightly long-winded post and hope this is in the right section, not sure if this falls under amplifiers or dacs section, hoping theres someone more knowledgeable than me who can advise
Recently been helping someone with getting better audio output from a TV to a jukebox amp which is driving both a set of internal speakers and a pair of KEF floor standing speakers. We originally fed the TVs headphone output into the amplifiers BGM line input which worked fine but the TVs analog output had a ton of hiss and wasnt great quality. Having used a JDS Labs Atom stack for my headphones for a while and being a fan of it figured the DAC would be a perfect fit for this as the jukebox amp has its own volume controls, plus the dac+ was on sale on jds labs website.
Before buying I double checked the specs, the manual for the jukebox specifies a 2 volt maximum input level for the line inputs, and the chip the line inputs feeds into (LMC1982) indeed specifies a 2.0vrms max input, seems perfect as the atom is a 2vrms output dac (which im pretty sure is standard for cd outputs?)
Anyways it arrives, got it hooked up, really clean signal now however noticed when the speakers are up loud in the jukebox the treble is rather more "harsh" than with the analog output, and at one point the amp just stopped outputting sound entirely until I rebooted the jukebox. Took another look at the datasheet for the LMC1982 and noticed the below:
According to this seems harmonic distortion rises sharply at 2vrms, so wonder if this is what is causing it? (Have basic electrical knowledge however not an expert at reading datasheets so apologies if im reading this wrong)
My question is, is 2vrms too much for the amplifier and if so, is there a way I can attenuate the output/a dac which can take optical in and provide a clean 1vrms output? I almost went for the cheapo amazon toslink dacs but saw that they measure dreadfully in the noise department and feared they wouldnt be much better than the tv analog output, however these do measure (slightly below) 1vrms it seems.
Apologies for the slightly long-winded post and hope this is in the right section, not sure if this falls under amplifiers or dacs section, hoping theres someone more knowledgeable than me who can advise
