QuestionQUESTION: I have a pyramid electronic low pass crossover network High/Low Impedance Adapter and the model number is CR65. I hooked it up according to the instructions the power light comes on but I do not have any sound coming from my subwoofers. Any advice would greatly welcomed.
Thank You
ANSWER: Did you use the ligh level or low level in/outs? Does your amp have a built in crossover?
Some pointers about crossovers:
The general idea is to set the crossover at a point near where the mid-bass ends (the lower end of their response) so that you will not lose a large portion of the music which occurs between the subs and the midranges.
More specifically, a crossover is designed to send the 'range of frequencies' to the speaker(s) most suited to reproduce those frequency ranges.
Do NOT use the 'bass boost feature'.
Be sure the amp crossover is off (if so equipped).
Be sure the level control is 'up' on the crossover and amp high enough to get sound. I usually set an amp all the way up and start with the crossover gain set to its lowest point and use only the crossover gain to adjust the bass level.
***In an entirely high impedance, line level system (which uses 'RCA jacks' from the headunit all the way to the amps), the idea when setting a crossover up is to attain clean, loud sound with the deck volume at or near 100% however, if you use the low impedance, high level sends (speaker leads from the headunit to the crossover), you will not be able to do that so expect acceptably clean sound at 70-80% volume at the headunit since you are amplifying the distortion of the factory headunit power amps.
*In, either case be sure the loudness is off and the bass/treble controls are centered before you begin trying to dial this all in.
The lower crossover frequency you choose means you will actually hear 'less' bass at a given amp level setting. Generally you can have more gain level at the crossover if the crossover point is set lower... say 50Hz rather than 120Hz. higher crossover points will usually require you to reduce the gain (your effective 'amp level control') on the crossover.
Your crossover has settings at 50, 80, and 120Hz.
In a simple, bi-amped system, you will probably end up using 120hz to get the best accuracy/clarity and boom.
Tune the system to its weakest link... and it should all last for years. Most oftentimes, this means reducing the bass to match the amount of highs and mid volume you have to work with.
Good luck,
JM
---------- FOLLOW-UP ----------
QUESTION: Hi, The hu that I am using is a sony cdxgt33w that also has a crossover built in just like my amp does. I wanted to bypass the two crossovers and use the pyramid since I paid money for it. Do you think the sony deck will not allow this to happen because of the crossover in the hu?
AnswerAha!
The RCA out is set to 'subwoofer' as default so you will need to change this to 'rear' in order to completely bypass the onboard crossover in the HU.
You can get a copy of the manual here:
http://www.retrevo.com/d/df/CDXGT33W_US_ES_FR.pdf?doc=cce3990f3882f1248c8e9bde81
Check page 9 and go from there.
