I am hoping to get some feedback about my plans for my current install. I'm hoping the forums here will expand my knowledge about the best way to create the car audio system I am working on putting together. I sent the following to Hertz to ask them about 2 specific amps I am looking at, but my question to them turned into a much longer question / statement about my current situation, so figured I'd join a car audio forum for once and learn from the best!
Here goes, sorry for the long first post. I felt it was necessary to say everything I am about to say,
I have a set of Hertz dsk165.3 components I plan to install into kick panels to cover mid and high frequencies using a high pass filter on the amp.
I also have 2 x Hertz ev165L.4 I plan to install into the bottom of the front doors to provide mid-bass / bass using the low-pass filter on the amp.
I am looking at the Hertz Dpower4 (which seems perfect with the "active 2-way" setup) as shown in the configuration examples on the hertz site. I am assuming that is putting a 2 ohm load on the amp, as it will be in "2 channel mode"
I am also looking at the Hertz HCP4 (which I am not sure will work with my set-up the way I would like). When looking in the configuration examples on the site it doesn't appear to be able to run the components and woofers the same way the Dpower4 can, while still retaining the usage of the highpass AND lowpass filters at the same time.
1. Can the HCP4 be configured the same way the Dpower4 can in terms of the 2 ohm load "active 2-way" setup? (retaining the usage of the highpass AND lowpass filters at the same time)?
2. When the Dpower4 is set up as a "active 2-way setup", does that mean it's running at 2 ohms?
3. How, if possible could I do the same as above with the HCP4?
4. What crossover settings would you suggest for my setup? I was thinking the ev165L.4 woofers in the front doors could be set to run about 250hz and below with the amp's low pass filter, and the DSK165.3 in the kick panels running 250hz and above with the amp's high pass filter. But that seems as though it's not possible on the HCP4 amp, but very possible on the Dpower4 amp.
---- I don't plan to run more speakers than I have, no subwoofer.----
5. I am trying to go for a good sound quality front stage, and don't need fader controls, so I suppose I am saying since all the speakers are in the front, I can live without a fader but perhaps the HCP4 can allow this if I run it at 4 ohms? I like the idea of a Class A/B amp anyway for better sound quality than the Dpower4 amp, plus my thoughts are that the HCP4 wouldn't have to work as hard as the Dpower4 would in this type of arrangement.
----I plan to run the signal from a kenwood kmr m322bt marine head unit (hidden behind the dash) using usb via an extention cable to play flac files, and for bluetooth aptx playing and head unit control via my Samsung a5 2017 and Kenwood's "remote app".----
----I also plan to run the head unit's signal through a Precision Power "PPI E.7" to use the master volume control on the unit to do just that (as the head unit will be hidden) and for fine tuning / pre-amp signal.---- I still haven't bought the head unit or the EQ so open to any other suggestions but at this time the features and price works well for me on both those units. I really want to play flac music and have Aptx codec possibility for bluetooth.
----This is going in an old '74 Toyota 1000 (kp30) and I plan to deaden the doors the best I can using the "home depot material method" instead of the more expensive Dynamat material, mounting the 2 x Hertz ev165L.4 on a 1" solid plastic spacer at the bottom of the doors, and install the Hertz dsk165.3 2-way components in the kick panels in a sealed pod, unless cutting into the metal to use the space behind is a better idea----
6. Any suggestions or better ideas for what I am working with already and plan to work with? I hope one of the 2 mentioned amps should work perfectly with my setup, especially since they are both available at a good price new at the moment. $150 for the Dpower4 and $200 for the HCP4 in Canadian dollars.
Thanks so much for your time and I apologize for the long read. It's been a long time since I was so focused on setting up a system and hope to make a decent quality sounding system this time around, unlike my 4x12" SPL system I crammed into my 1985 Rx-7 in the '90's. I know the car I'm using is old and there's lots of road noise, hence almost impossible to make a high quality SQ setup, but I am to do it right, the best way I can on a budget.
Nick. (Ecuador, South America).