Eclipse CD8454 vs. CD8053 ?

[Hoot 10+ year member]

the 8053 does not make 16v without the BLA-hence the BLA has some line driver duties- voltage doesnt mysteriously double.

I *think* what the deal is, as I stated way up front, is that the 16-volts is generated by the head unit only if you use a double-pair of the outputs. As you likely know, there are 2 pairs each for the front, rear, and sub (that's 12 outs total). Use one pair (2 outs) and no BLA and you get your traditional unbalanced setup for either your front, rear, or sub; use the two pairs (4 outs) plugged into the BLA and you get 16-volts for that particular pair of outs.
Did you read the linked thread? What is your response to solobarics3? james33440 (in this thread) seems to believe the head unit is responsible for the 16-volts also. Btw, does the BLA receive any kind of remote power? If not, how is it supposed to be a stand-alone source of power (e.g., a line driver)? I'm not tryin' to be argumentative - your suggestion just still doesn't make sense to me.

 

[james33440 10+ year member]

I never said that the deck provides 16V outs. The truth is, however, that the deck sends 16V from all pairs of RCA's (negative and positive) to the BLA. Once the signal goes through the BLA to the amp(s), it's then 10V! I never said it was a true 16V signal. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Regardless, whether one uses the BLA or not, IMO the deck is still awesome!

 

[Hoot 10+ year member]

James, I didn't say you said it was a true 16v signal - only that you, too, asserted that the source of the 16v was from the deck (RCAs) and not the BLA. Again, my contention, too, is that the head unit -- and its multiple pairs of RCAs -- are responsible for the 16v, and not the BLA.

James, you said: "the deck sends 16V from all pairs of RCA's (negative and positive) to the BLA." Read my posts - this is precisely what I am saying. Cheers.... //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[james33440 10+ year member]

Yes, the deck does send the 16V to the BLA because of the + and - RCA's. However, you need the BLA "only" to convert the signal to a balanced 10V one. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[squeak9798 5,000+ posts]

Ok, so the deck does have 2 pair of RCA's per output (front, rear, sub)? So, if you are sending a balanced output from the HU, and your amps can accept a balanced input, there is no need for the BLA then, correct? I was always under the impression that the BLA converted the signal to balanced, not to unbalanced.

God I can't wait for my 8053 to get here so I can just look for myself...LOL

 

[3.5Max6spd 10+ year member]

Yes, the deck does send the 16V to the BLA because of the + and - RCA's. However, you need the BLA "only" to convert the signal to a balanced 10V one. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

YOU CANNOT GET 16V OR BALANCED SIGNAL TO AN AMP WITHOUT THE BLA!! The deck without the BLA is the typical 8v per output deck - (for example FL and FR pairs are 8v combined,16v if used with the BLA

the 8053 has 6 total pairs of RCA's - a pair for FR, FL, RR, RL, NF-R, NF-L

you cannot possibly use all of these when connecting to a standard amplifier wiithout the BLA- If you chose to use the deck without the BLA you use one RCA from each side from the pairs for 8v OUTPUTS.

Contact an Eclipse rep or dealer

Here you go Squeek- a schematic....

http://www.freewebs.com/eclipse-car/37601Dc.htm

 

[squeak9798 5,000+ posts]

Sorry 3.5Max....looks like Hoot is right. If you look at the inputs, it shows a + and - for each channel, and then only a single RCA (L & R) going to each amplifier. In order for the BLA to have both a + and - input for each channel, that means that the HU would have to be sending the BLA a balanced input signal.

But.....I'm going to go over and ask on ECA aswell....LOL. There should be a few people over there using one.

 

[3.5Max6spd 10+ year member]

Sorry 3.5Max....looks like Hoot is right. If you look at the inputs, it shows a + and - for each channel, and then only a single RCA (L & R) going to each amplifier. In order for the BLA to have both a + and - input for each channel, that means that the HU would have to be sending the BLA a balanced input signal.

But.....I'm going to go over and ask on ECA aswell....LOL. There should be a few people over there using one.

lol- so whats the purpose of the BLA? to 'balance' a balanced signal? makes no sense....if so there would be no need for the BLA

Trust me Hoot we are simply having a discussion.

Hoot I see your argument as far as the 'line driver' thing...I may be wrong in those regards(specially after visually being able to see with that schematic I dug up) but apparently you can only see 16v out of those outputs using only the BLA. Take this scenario- we are not talking L& R signals only here- we are talking + and - that are separated intentionally for each side (right orleft) to make up the signal as a whole- obviously

each set of RCA's is not there to be hooked up to an amplifier to split the sources signal to different amplifiers. One thing is for sure- you need the BLA TO ACHIEVE 16v AND TO ACHIEVE balanced signal

 

[squeak9798 5,000+ posts]

lol- so whats the purpose of the BLA? to 'balance' a balanced signal? makes no sense....if so there would be no need for the BLA

Well, going by that schematic....it seems that the BLA converts the balanced signal to an unbalanced signal, so that you can use still utilize the balanced outputs of the HU with amps that don't accept a balanced input. And, really, it kinda makes sense with the name...."Balance Line Adaptor"; it adapts (definition: To make suitable to or fit for a specific use or situation) the balanced line to make it suitable for use other components.

 

[3.5Max6spd 10+ year member]

Well, going by that schematic....it seems that the BLA converts the balanced signal to an unbalanced signal, so that you can use still utilize the balanced outputs of the HU with amps that don't accept a balanced input. And, really, it kinda makes sense with the name...."Balance Line Adaptor"; it adapts (definition: To make suitable to or fit for a specific use or situation) the balanced line to make it suitable for use other components.

A balanced signal is not achieved with all of those channels separated- you'd then be asking an anplifier's input stage to combine and balance those ch's- which you wont find

 

[squeak9798 5,000+ posts]

A balanced signal is not achieved with all of those channels separated- you'd then be asking an anplifier's input stage to combine and balance those ch's- which you wont find

My amp does //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif If the 8053 truly has a + and - per channel (for the balanced signal), I can run those directly into my amp's inputs (my amp accepts dual RCA style balanced inputs directly).

 

[3.5Max6spd 10+ year member]

My amp does //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif If the 8053 truly has a + and - per channel (for the balanced signal), I can run those directly into my amp's inputs (my amp accepts dual RCA style balanced inputs directly).

Then my friend you are in the green.... alot of companies will say they accept balanced inputs but wil have a mere single set of RCA inputs- sure any amp will accept any signal(they dont distinguish from balanced to unbalanced) but wether they buffer it as such in their input/gain stage is the issue

Now you have to figure out if in that application-what voltage are you getting per set of outputs. And do you have to use ALL (F/R/NF) to achieve this. Or is it detrimental( if its unbalanced the legth of the run to the amp)? Wish we could get more 'hands-on' people to chime in.

 

[ngsm13 5,000+ posts]

I used to own an 8053 AND the BLA.

The deal is, the HU has the ability to send a POSITIVE 8V and a NEGATIVE 8V for each (Front, Rear, Non-fader). The BLA then COMBINES the +8V and -8V and spits out a 16V balanced output. If the amplifier can only utilize 10v input, then that is all that it utilizes. The BLA however does convert to a 16v balanced signal.

NG

 

[3.5Max6spd 10+ year member]

I used to own an 8053 AND the BLA.
The deal is, the HU has the ability to send a POSITIVE 8V and a NEGATIVE 8V for each (Front, Rear, Non-fader). The BLA then COMBINES the +8V and -8V and spits out a 16V balanced output. If the amplifier can only utilize 10v input, then that is all that it utilizes. The BLA however does convert to a 16v balanced signal.

NG

thank you...

 

[ngsm13 5,000+ posts]

thank you...

Not a problem, I don't understand what is so confusing or what is so hard to comprehend. The cables themselves are even labled as such (positive/negative...each carrying 8v //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif ) Later...

NG