? best crossover for Rockville SPG88 - Home Theater Forum and Systems - HomeTheaterShack.com

 
Thread Tools
post #1 of 7 Old 06-30-19, 08:45 AM Thread Starter
Shackster
 
dreadknot's Avatar
 
Join Date: Jun 2017
Posts: 45
? best crossover for Rockville SPG88

whats a good crossover point to set for these from the receiver i was going set to 50hz, my current config is my fronts are at 70hz an

my center at 60hz , would 50hz on these Rockville SPG88 for use as sides an a pair set at 60hz for rears be good i'll be driving

each set with a crown xli 800 at 200watts a channel just like my fronts an center are
___________________________________________________________________________ ____________________________________

this was my previous speakers preferred config because my subs are in the back (minus the amp power old loadout an emotiva A-500 80watts per ch) ( current loadout is 200watts a channel )

an i feel they blended better back to front , but with new speakers in mix that isn't aways the case as with my current duel 8in bics in front an center

my previous surround speakers set were all 6.5in polks set like this 50hz on front 60hz center 40hz on surrounds an

100hz lowpass on the subs

my current planed config is ( currently own PL-89 fronts at 70hz an two PL-28II centers at 60hz an ( Rockville SPG88 for sides at 50hz yet to be powered

i plan to get a 2nd set of Rockville SPG88 an a as rears at 60hz both the sets to be driven by a crown xli 800

im still reworking my sub build


so an any thoughts on crossover point an speakers positioning

i also plan to build so bigass acoustic bass trap at 6ft by 3ft by 6in thick

will take pixs when i have a better camara

anything worth doing is worth overdoing
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
dreadknot is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 06-30-19, 12:56 PM
HTS Senior Moderator
 
Wayne A. Pflughaupt's Avatar
 
Join Date: Apr 2006
Location: Corpus Christi, Texas
Posts: 9,177
Send a message via Yahoo to Wayne A. Pflughaupt
Re: ? best crossover for Rockville SPG88

Speakers like that typically have a very high roll-out point, meaning the frequency at which the bass starts dropping. Hard to speculate without seeing some measurements, but the drop-point could be as high as 125-175 Hz. A crossover setting at 50-60 Hz will leave a big hole in system response.

Regards,
Wayne



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

Wayne A. Pflughaupt is offline  
post #3 of 7 Old 06-30-19, 01:13 PM Thread Starter
Shackster
 
dreadknot's Avatar
 
Join Date: Jun 2017
Posts: 45
Re: ? best crossover for Rockville SPG88

when you say very high roll-out point do mean were the bass starts to fade in output before it would blend with my subs

anything worth doing is worth overdoing
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
dreadknot is offline  
 
post #4 of 7 Old 06-30-19, 01:25 PM
HTS Senior Moderator
 
Wayne A. Pflughaupt's Avatar
 
Join Date: Apr 2006
Location: Corpus Christi, Texas
Posts: 9,177
Send a message via Yahoo to Wayne A. Pflughaupt
Re: ? best crossover for Rockville SPG88

Yes.

Regards,
Wayne



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

Wayne A. Pflughaupt is offline  
post #5 of 7 Old 06-30-19, 01:56 PM Thread Starter
Shackster
 
dreadknot's Avatar
 
Join Date: Jun 2017
Posts: 45
Re: ? best crossover for Rockville SPG88

thanks sometimes i dont get the audio linguo ya think a good startin point would 150hz

anything worth doing is worth overdoing
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
dreadknot is offline  
post #6 of 7 Old 06-30-19, 02:30 PM
HTS Senior Moderator
 
Wayne A. Pflughaupt's Avatar
 
Join Date: Apr 2006
Location: Corpus Christi, Texas
Posts: 9,177
Send a message via Yahoo to Wayne A. Pflughaupt
Re: ? best crossover for Rockville SPG88

I’d suggest taking some measurements to see where the lows start falling. If you don’t have REW, get some graph paper and manually plot the dB level of 1/3-octave tones from say, 500 Hz down. Once you plot a frequency response graph that you can look at, you’ll be able to determine where to set the crossover.

Here are 1/3-octave frequencies from 500 Hz:

500
400
315
250
160
125
100
80
63
50
40

You can download the test tones here.

After plotting, you should have a graph that looks something like this:


https://www.hometheatershack.com/for...vs-lgrm-2-.jpg


Regards,
Wayne



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

Wayne A. Pflughaupt is offline  
post #7 of 7 Old 07-05-19, 06:22 PM
Shackster
 
BP1Fanatic's Avatar
 
Join Date: Mar 2011
Posts: 66
My AVR sets the crossover 100hz for the LCR's and 120hz for the surrounds. I'm using 80hz on all 8 speakers.
BP1Fanatic is offline  
Reply

Bookmarks

Tags
crossover , rockville , spg88

Quick Reply
Message:
Options

Register Now




PLEASE COMPLETE ALL REQUIRED FIELDS BELOW... THANKS!

REQUIRED FIELDS ON THIS PAGE
YOU MUST COMPLETE ALL OF THESE

Username
Password
Confirm Password
Email Address
Confirm Email Address
Random Question
Random Question #2




User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
PLEASE READ BELOW PRIOR TO ENTERING AN EMAIL ADDRESS!

ATTENTION!

YOU MUST ACTIVATE YOUR ACCOUNT!

Activation requires you reply to an email we will send you after you register... if you do not reply to this email, you will not be able to view certain areas of the forum or certain images... nor will you be able download software.

AN INVALID EMAIL ADDRESS WILL CAUSE YOUR ACCOUNT TO BE DELETED!

See our banned email list here: Banned Email List

We DO NOT respond to spamcop, boxtrapper and spamblocker emails... please add @hometheatershack DOT com to your whitelist prior to registering or you will get nowhere on your registration.


Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML is not allowed!
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


For the best viewing experience please update your browser to Google Chrome