Audio Systems Find answers to all of your stereo, speaker and other audio technology questions here.
Sponsored by:
Sponsored by:

Thoughts on this setup

Thread Tools
 
Search this Thread
 
Old Dec 7, 2015 | 04:12 PM
  #1  
fl1996nos's Avatar
fl1996nos
Thread Starter
|
Cruiser
Joined: Mar 2014
Posts: 107
Likes: 3
From: Albuquerque
Default Thoughts on this setup

I have an 05 EG with HK HU and an RZ42000D. I initially had 6.5 infinity kappas in the fairing but couldn't resist the sale that Biktronics had on the BT7P1s a while back. Currently have the BT7P1s in the fairing and would like to put the infinitys in the lowers running off the rear channels of the amp. Anybody have any thoughts on how this might work out. I know that the BTs are 4 ohm and the infinitys are 2 ohm so gain settings will be different. Does the RZ42000 put out enough power for the BTS?
 
Reply
Old Dec 7, 2015 | 04:19 PM
  #2  
SBates08's Avatar
SBates08
Seasoned HDF Member
Joined: Jan 2013
Posts: 10,637
Likes: 1,246
From: Lake, Ms
Default

Your amp puts out around 90 watts @ 4ohms. It'll sound ok but you won't realize the full potential. My suggestion would be to upgrade to the SS pn4.1000D if it's within your budget. Noticeable difference in your setup after that. Those Kappas will sound totally different with more power.

2010 Limited with some stuff
 
Reply
Old Dec 7, 2015 | 04:30 PM
  #3  
fl1996nos's Avatar
fl1996nos
Thread Starter
|
Cruiser
Joined: Mar 2014
Posts: 107
Likes: 3
From: Albuquerque
Default

Thanks Sbates, I had already been thinking about going to the pn4.1000D. Wasn't sure if I would get the full potential of the BTs from the RZ. Thanks.
 
Reply
Old Dec 7, 2015 | 04:39 PM
  #4  
fl1996nos's Avatar
fl1996nos
Thread Starter
|
Cruiser
Joined: Mar 2014
Posts: 107
Likes: 3
From: Albuquerque
Default

What are your thoughts on pairing the BTs with the infinitys?
 
Reply
Old Dec 7, 2015 | 04:40 PM
  #5  
Gannicus's Avatar
Gannicus
Ultimate HDF Member
Joined: Oct 2012
Posts: 6,621
Likes: 412
From: Indianapolis IN.
Default

Bates is correct on the RZ4 being 90 watts @ 4 ohms and he is also correct on the SS 1000D being a better amp. That said. You would not think with those specs it would drive the BT's. but the RZ4 is the exception! It will drive the hell out of those speakers!! We've never figured out why that little amp is so powerful given the specs and I can't explain it. All I know is you'll be more than happy with that set up!
 
Reply
Old Dec 7, 2015 | 04:42 PM
  #6  
fl1996nos's Avatar
fl1996nos
Thread Starter
|
Cruiser
Joined: Mar 2014
Posts: 107
Likes: 3
From: Albuquerque
Default

Thanks Gann.
 
Reply
Old Dec 7, 2015 | 04:43 PM
  #7  
SBates08's Avatar
SBates08
Seasoned HDF Member
Joined: Jan 2013
Posts: 10,637
Likes: 1,246
From: Lake, Ms
Default

Originally Posted by Gannicus
Bates is correct on the RZ4 being 90 watts @ 4 ohms and he is also correct on the SS 1000D being a better amp. That said. You would not think with those specs it would drive the BT's. but the RZ4 is the exception! It will drive the hell out of those speakers!! We've never figured out why that little amp is so powerful given the specs and I can't explain it. All I know is you'll be more than happy with that set up!
Good call Gannicus I hadn't heard that about the RZ4. Just going on specs alone I would've figured it would be lacking plus no headroom.

2010 Limited with some stuff
 
Reply
Old Dec 7, 2015 | 04:46 PM
  #8  
Gannicus's Avatar
Gannicus
Ultimate HDF Member
Joined: Oct 2012
Posts: 6,621
Likes: 412
From: Indianapolis IN.
Default

Originally Posted by SBates08
Good call Gannicus I hadn't heard that about the RZ4. Just going on specs alone I would've figured it would be lacking plus no headroom.

2010 Limited with some stuff
Lol. . . That little amp is B*tch!!
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Dec 7, 2015 | 04:52 PM
  #9  
SBates08's Avatar
SBates08
Seasoned HDF Member
Joined: Jan 2013
Posts: 10,637
Likes: 1,246
From: Lake, Ms
Default

Even with that knowledge of the RZ4 I would still lean towards the pn4.1000D. I have the 4.520 which is the same amp as the RZ4 and I know what the Kappas sound like on that amp. I also know what they sound like when you have more power to throw at them too. I think the 4.1000D would be a better amp for the BT's and Kappas as well to see their full potential.

2010 Limited with some stuff
 
Reply
Old Dec 7, 2015 | 04:55 PM
  #10  
fl1996nos's Avatar
fl1996nos
Thread Starter
|
Cruiser
Joined: Mar 2014
Posts: 107
Likes: 3
From: Albuquerque
Default

Thanks SBates/Gann I appreciate your help.
 
Reply



All times are GMT -5. The time now is 01:17 PM.

story-0
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-1
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-2
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-3
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-4
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-5
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-6
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE