Hi
Have a Crest 4000 amp, not the CC one, just the plain 'ol 4000. Been trying to find specs for it without luck. Even the folks at Crest say they don't have a thing, ZIp-zilch-nada. So, posting here in case by luck someone has the same amp or knows the specs or has a service or owners manual for one.
Thanks!
Have a Crest 4000 amp, not the CC one, just the plain 'ol 4000. Been trying to find specs for it without luck. Even the folks at Crest say they don't have a thing, ZIp-zilch-nada. So, posting here in case by luck someone has the same amp or knows the specs or has a service or owners manual for one.
Thanks!
If I remember correctly, the Crest 4000 is 700W/2R per channel.
Here is the schematic:
http://www.crestaudio.com/media/schematics/3000-4000 SchematicSet.pdf
I've used the On Semiconductor outputs and drivers to repair these, they work fine.
Here is the schematic:
http://www.crestaudio.com/media/schematics/3000-4000 SchematicSet.pdf
I've used the On Semiconductor outputs and drivers to repair these, they work fine.
The amplifier doesn't know or care how MANY speakers you connect to it. All the amp ses is the total impedance of what you connect. In other words one 4 ohm speaker will be a greater burden on an amp channel than two 16 ohm speakers. And an 8 ohm cabinet can have one speaker or eight speakers in it, but the amp only sees the 8 ohms.
ANy amp has ratings, often printed on the rear panel. The amp will be rated down to some impedance - 4 ohms for example. A solid state amp like that will be happy with any load impedance down to that rated impedance. If it is rated for 4 ohms, don't offer it 2 ohms. Higher impedances are fine. An amp rated down to 4 ohms will be happy as a clam all day pushing 8 ohm speakers.
SO you have to look at the speakers you intend to use for their impedances. If they are 8 ohm speakers, then two of them makes 4 ohms. If they are 16 ohm speakers, then two of them makes 8 ohms. And if they are 4 ohm speakers, then a pair of them makes 2 ohms. Look at what speakers you have, determine what two of them would make and compare that to the amp rating.
ANy amp has ratings, often printed on the rear panel. The amp will be rated down to some impedance - 4 ohms for example. A solid state amp like that will be happy with any load impedance down to that rated impedance. If it is rated for 4 ohms, don't offer it 2 ohms. Higher impedances are fine. An amp rated down to 4 ohms will be happy as a clam all day pushing 8 ohm speakers.
SO you have to look at the speakers you intend to use for their impedances. If they are 8 ohm speakers, then two of them makes 4 ohms. If they are 16 ohm speakers, then two of them makes 8 ohms. And if they are 4 ohm speakers, then a pair of them makes 2 ohms. Look at what speakers you have, determine what two of them would make and compare that to the amp rating.
Thnaks for the info. Yeah, i know about the impedence and stuff, just have never run two sets of speakers in parallel before and want to make sure. One set is 8 ohm and one set is 6ohm so i am guessing the total load should be fine.
- Status
- Not open for further replies.