Audio/Video Electronics Wired up? If you have some sort of A/V modification let's hear about it here. Discussion of stock electrical problems should be done in the 'Lighting & Electrical' section.

OEM Speaker Sizes

Old 07-29-2016, 08:52 AM
philipfreire's Avatar
Beginning Member
Join Date: Oct 2015
Location: Toronto, ON
Posts: 11
philipfreire is on a distinguished road

Originally Posted by LoneWolf View Post
Actually from what I have read, the fronts are 8 ohms because its actually two 4 ohm speakers wired together, at least on the newer models.The speakers on the dash and front door are wired together. But don't quote me on that its just what I have read.
Just wanted to confirm LoneWolf's readings. I have an 05 Chevrolet Blazer with Tweeters (rated 4ohms) up front on the dash and 6" speakers (rated 4ohms) in the door.

The rear speakers are 6x9 (rated at 10ohms). Which lead me to believe the front has to be wired in series to 8ohms because it would be ludacris if the head unit had a 2ohm and 10ohm channel set up.

I then attached a multimeter to the door speaker ground adapter (dark blue wire lead) and then completed the circuit by touching the positive (red wire lead) on the tweeter adapter confirming that it is wired in a series. Thus two 4 ohm speakers in series creates 8 ohms.

Clearly this is not the case with older s10 blazers. So check your application.

I also wanted to state that the front doors on this blazer are 6" exactly end to end from the mountings. Meaning the speaker itself is 5 1/2".

You can put 6 1/2" (which i am replacing with) which will clear but the diameter of the stock housing will allow the speaker in but the holes will not line up - you will either have to drill new holes or replace the plastic housing with the aftermarket ones.
Old 03-30-2017, 04:04 AM
dieseldyr's Avatar
Beginning Member
Join Date: Mar 2010
Location: Norway
Posts: 12
dieseldyr is on a distinguished road

I replaced all the speakers in my 1995 four-door a couple of years ago.
JBL GTO 6.5 inch in the rear doors, 6.5 in the front doors, and 4x6 in the dash. All fitted right in. No adapters needed, but can be useful.

The dash speakers were delco tweeters originally. But 4x6 fits in the same speaker compartment without hassle.

I also made an AUX input on the old Delco radio/cd player, following instructions posted on this forum.

Last edited by dieseldyr; 03-30-2017 at 04:07 AM.
Old 07-01-2018, 02:16 AM
Beginning Member
Join Date: Jun 2018
Posts: 14
VI-Joe is on a distinguished road

Very useful information here. Front speakers are blown and the replacements are on the way. Iíll probably end up replacing the rears and dash just to keep things fresh.
Related Topics
Thread Starter
Last Post
Audio/Video Electronics
11-05-2010 02:55 AM
Tires and Wheels
10-22-2008 06:22 AM
Audio/Video Electronics
08-07-2008 12:20 PM
Audio/Video Electronics
08-01-2005 05:39 PM

Thread Tools
Search this Thread
Quick Reply: OEM Speaker Sizes

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.