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Author Topic: BOSE Amps - Anybody have specs and wiring diagram?  (Read 2343 times)
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Woody
Second Gear
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Posts: 73


'05 MSM - Black Mica


« on: October 08, 2015, 02:39:31 PM »

I am putting a new Kenwood head unit in with preamp outputs.  Crutchfield install instructions uses a "matching" box, for lack of a better term to connect the head unit to the Bose amps.  I am wondering if the preamp outs can be connected to the Bose amps?  I have Clearwater speakers, so I can't ditch the Bose.   
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'05 Mazdaspeed Miata - Mica Black - Purchased 26-Aug-05
St. Louis Area - Gateway Miata Club
No Mods Yet!  Still doing my homework!
Don't have my AARP card yet, but I'm eligible!  Still have the need for SPEED!
SilverMiataRacer
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WWW
« Reply #1 on: October 08, 2015, 02:45:33 PM »

There are Clearwater speakers for non-Bose systems too.  Can you return those and get the others?
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Larry

4 Miatas but who's counting!!   Cool

White Knight    1991 Crystal White   #99 CSP
Silver Bullet     1992 Silverstone     #17 SM2  FM I+ Turbo  (Gone but not forgotten)
Honey B          1992 Sunburst Yellow #99 SM2 J.R. M45
Whooosh         2004 Titanium MazdaSpeed MX5  #403 of 4000
Subie              2006 Steel Gray WRX STi Cobb Stage 2 (Gone but not forgotten)
No name yet    2008 Velocity Yellow Tintcoat Z06 Corvette
No Name yet    2014 Ashen Grey Metallic Camaro 2SS 1LE

“There are only three sports: mountain climbing, bull fighting, and motor racing. All the rest are merely games.”
– Ernest Hemingway
Woody
Second Gear
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Posts: 73


'05 MSM - Black Mica


« Reply #2 on: October 08, 2015, 04:47:55 PM »

No, I could probably sell them and get new ones.  They sound awesome.  I did some homework and there is a box that Scosche makes model SLC4 that connects the Kenwood to the BOSE.  It's what crutchfield recommended and that is what I have on order.  It is amp to amp, not preamp to amp, but that is what the BOSE wants.
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'05 Mazdaspeed Miata - Mica Black - Purchased 26-Aug-05
St. Louis Area - Gateway Miata Club
No Mods Yet!  Still doing my homework!
Don't have my AARP card yet, but I'm eligible!  Still have the need for SPEED!
m3fan4ever
Third Gear
***
Posts: 146



« Reply #3 on: October 08, 2015, 06:03:22 PM »

If you already got the Scosche line adjuster just use that and don't worry about the preamps on your head unit. Then you don't have to worry about another harness or doing any splicing to make coax connections to plug into your head unit.
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2004 MSM Ti GT #1796 - Purchased 12/13
Flyin' Miata "Little Enchilada"; Flyin' Miata "Happy Meal" (10.3 lb flywheel); 15x7 Advanti Storm S1, Dunlop Direzza DZ102; Tein Street Advance Coilovers; Hawk HPS Brake Pads; Mazda Competition Motor Mounts; MiataRoadster Tall Angled Short Shifter Kit, VMS Racing Type-R Shift Knob; KOYO Hyper-V 36mm Radiator; Autometer Boost Gauge, Linear Water Temp Gauge Mod, Oil Pressure Light Mod; Xentec HID Conversion - 6000K 55W; Plastidipped Badges
Woody
Second Gear
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Posts: 73


'05 MSM - Black Mica


« Reply #4 on: October 08, 2015, 06:44:34 PM »

It just goes against general engineering principals to pre-amp to amp to Scosche to amp - in the Bose lowers voltage in bose to  feed bose amp.  Lots of opportunities to add distortion and noise. Seems like pre-amp out to pre-amp in should be how it is wired for best sound.   

Reality is,  I am going to use the Scosche box and keep it simple on me.   Just doesn't seem right somehow.

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'05 Mazdaspeed Miata - Mica Black - Purchased 26-Aug-05
St. Louis Area - Gateway Miata Club
No Mods Yet!  Still doing my homework!
Don't have my AARP card yet, but I'm eligible!  Still have the need for SPEED!
Chrisbee
Fourth Gear
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Posts: 254


« Reply #5 on: October 09, 2015, 01:56:27 AM »

It is really just a cheap work around. It's really the only option with an aftermarket radio and the resistance that the Bose speakers are. I have that Scosche box in mine with an aftermarket radio, and it seams to work fine. I only turned up the line out dials about 1/4 of the way.
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2004 TI #3021. Purchased Oct. 2014 with 56k miles.

Engine: FM 2 kit with Hydra 2.7, 700cc injectors, and full 3" exhaust.
FM Crossflow radiator w/stage 2 airflow kit.
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Wheels: 15x8 Enkei PF01s running 215/50 BFG G-force Sports.
Misc: Custom Speedhut boost gauge in place of stock oil pressure gauge. Temp gauge mod. ScanGaugeII. Blue instrument panel lights. Eclipse dash vents.

Definitely a work in progress!
tuckermon
Fourth Gear
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Posts: 274


« Reply #6 on: October 09, 2015, 02:13:27 PM »

I just ordered a new Kenwood head unit, 8" door speakers, foam speaker cups, rear speakers (5.25"), and all the wiring and install hardware including the scosche box for $200 shipped.

Just a though.
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Woody
Second Gear
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Posts: 73


'05 MSM - Black Mica


« Reply #7 on: October 09, 2015, 03:50:15 PM »

I just ordered a new Kenwood head unit, 8" door speakers, foam speaker cups, rear speakers (5.25"), and all the wiring and install hardware including the scosche box for $200 shipped.

Just a though.

Are you retaining the BOSE amps?  They need 1/2 ohm speakers. 
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'05 Mazdaspeed Miata - Mica Black - Purchased 26-Aug-05
St. Louis Area - Gateway Miata Club
No Mods Yet!  Still doing my homework!
Don't have my AARP card yet, but I'm eligible!  Still have the need for SPEED!
tuckermon
Fourth Gear
****
Posts: 274


« Reply #8 on: October 09, 2015, 04:44:37 PM »

I just ordered a new Kenwood head unit, 8" door speakers, foam speaker cups, rear speakers (5.25"), and all the wiring and install hardware including the scosche box for $200 shipped.

Just a though.

Are you retaining the BOSE amps?  They need 1/2 ohm speakers. 

No, just running off of the head units power.  The bose amp is junk.  I'm going to use the existing wiring thought by jumping the amp connector pins.

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moonrider_99
Second Gear
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Posts: 52


« Reply #9 on: October 18, 2016, 06:08:50 PM »

Can someone clarify why the BOSE amp plug needs to be re-wired with bypass jumpers if the amp is not going to be used?

I see it in the FAQ here

http://www.mazda-speed.com/forum2/index.php/topic,27093.0.html
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2012 Mazdaspeed3
2004 MSM
I'm a Turbo addict, I know.
SilverMiataRacer
Global Moderator
Fifth Gear
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Posts: 25931



WWW
« Reply #10 on: October 18, 2016, 06:26:09 PM »

You just reopened a year old thread to ask a question about a 4 year old thread in a forum that will be locked in 2 weeks. 

Why don't you start by looking in the audio section on Miata.net and if you don't find the answer start a thread there
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Larry

4 Miatas but who's counting!!   Cool

White Knight    1991 Crystal White   #99 CSP
Silver Bullet     1992 Silverstone     #17 SM2  FM I+ Turbo  (Gone but not forgotten)
Honey B          1992 Sunburst Yellow #99 SM2 J.R. M45
Whooosh         2004 Titanium MazdaSpeed MX5  #403 of 4000
Subie              2006 Steel Gray WRX STi Cobb Stage 2 (Gone but not forgotten)
No name yet    2008 Velocity Yellow Tintcoat Z06 Corvette
No Name yet    2014 Ashen Grey Metallic Camaro 2SS 1LE

“There are only three sports: mountain climbing, bull fighting, and motor racing. All the rest are merely games.”
– Ernest Hemingway
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