Splitting front speaker output to f+r
11-12-19, 10:50 PM
#1
Splitting front speaker output to f+r
I've heard that the 3rd gen cassette receiver applies a low-pass to the rear speaker outputs. I'm installing 2-way coaxials (with built-in tweeters) in the rear, so obviously don't want to clip the high tones. I'm also using a small 400W amp between the receiver and the speakers. The amp has 4 channels in and 4 out.
My question is, can I just disconnect both of the receiver's rear ouputs, and then tee the front two channels from the receiver into both front and back inputs on the amp? Eg. Receiver FR output tees to amp FR and BR inputs, and receiver FL output tees to amp FL and BL inputs.
My question is, can I just disconnect both of the receiver's rear ouputs, and then tee the front two channels from the receiver into both front and back inputs on the amp? Eg. Receiver FR output tees to amp FR and BR inputs, and receiver FL output tees to amp FL and BL inputs.
Last edited by mkd; 11-12-19 at 11:25 PM. Reason: spelling
11-13-19, 11:45 AM
#2
I think the best bet is to go to Lotts and put in an Alpine head unit. 
Unless you're worried about keeping your car 100% stock, that FD head unit is kind of a pile of crap.
Good to see someone from SC! Welcome to the club.
Unless you're worried about keeping your car 100% stock, that FD head unit is kind of a pile of crap.Good to see someone from SC! Welcome to the club.
Last edited by Natey; 11-13-19 at 11:48 AM.
11-13-19, 11:59 PM
#4
Pleasure Point, here. 
You're right, It's getting rare to see one still intact too.
Sorry I cant be more helpful. The PO of my car put in a new head unit.. Then I swapped out the center dash speaker for a couple gauges.
I CAN tell you that if you do 86 the stock receiver and cassette player (and if your car even has the Bose snake) you'll need a hi-lo adapter to run the stock Bose speakers with an aftermarket head unit. Here's a quote that might help.
From here:
https://www.rx7club.com/interior-ext...right-1095943/
You're right, It's getting rare to see one still intact too.
Sorry I cant be more helpful. The PO of my car put in a new head unit.. Then I swapped out the center dash speaker for a couple gauges.
I CAN tell you that if you do 86 the stock receiver and cassette player (and if your car even has the Bose snake) you'll need a hi-lo adapter to run the stock Bose speakers with an aftermarket head unit. Here's a quote that might help.
My first FD had a perfectly working BOSE sytem and it was glorious.... Many young people made the mistake of thinking the wave tube is a bass tube. Nope, and because of it they were very disapointed and the bad reputation of bose blows came about.
Anyway the Bose head unit emitts a passive signal (unlike your average head unit). What that means is that each bose speaker has an amplifier because it is expecting a low level signal to come through. Now stick an active signal instead (your average headunit) and overlolad occurs. On top of that, the BOSE system works at 1Ω impedance instead of the 75Ω impedance that an average system runs at. What that means is that there are mismatch issues as well (a mismatched impedance results in degregation in signal quality). Hence the crutchfield adaptor comes into play as it is supposed to fix all that. Impedance match and attenuate the signal. Now add age to it and it is no wonder a lot of these systems don't sound good.
Since I liked my original FD bose system I also tried to replicate it on my second FD that came with non-bose. The end result was that yeah it worked, but not at the level that I was expecting. So my sugestion is that it is just not worth tackling it. Not only because of all the mismatch impedance issues but your bose speakers are 20+ years old and IMO age is very likely the culprit in your setup. Since you already have a high end head unit just invest in some good speakers and a decent amplifier and you're set.
my $0.02
Anyway the Bose head unit emitts a passive signal (unlike your average head unit). What that means is that each bose speaker has an amplifier because it is expecting a low level signal to come through. Now stick an active signal instead (your average headunit) and overlolad occurs. On top of that, the BOSE system works at 1Ω impedance instead of the 75Ω impedance that an average system runs at. What that means is that there are mismatch issues as well (a mismatched impedance results in degregation in signal quality). Hence the crutchfield adaptor comes into play as it is supposed to fix all that. Impedance match and attenuate the signal. Now add age to it and it is no wonder a lot of these systems don't sound good.
Since I liked my original FD bose system I also tried to replicate it on my second FD that came with non-bose. The end result was that yeah it worked, but not at the level that I was expecting. So my sugestion is that it is just not worth tackling it. Not only because of all the mismatch impedance issues but your bose speakers are 20+ years old and IMO age is very likely the culprit in your setup. Since you already have a high end head unit just invest in some good speakers and a decent amplifier and you're set.
my $0.02
https://www.rx7club.com/interior-ext...right-1095943/
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