Originally Posted by zcat
Not sure this is the correct discussion format but here we go. I have a Crown 1502 Pro Amp ordered and having never even seen a "Pro Amp" let alone use one in a Home Theater application I have a few questions. My AVR is an Onkyo TX NR818 that drives Front Klipsch KLF30's, KLF-C7 center and RS-7 side surrounds. Rear surrounds, KLF20's are driven by a separate Harman Kardon stand alone power amp. The Crown will be used to drive an Velodyne HGS 18 sub-woofer that I have given up on the amp after repairs seem to break-down quickly on. I'm not 100 % sure the HGS speaker is still good but appears OK and I can't find any information stating what ohm value it is 2-4-6-or 8???? If this speaker is dead I will be installing a Dayton Ultimax 18 in it's place. So, is this as simple as running an RCA sub cable to the Crown and speaker wires to the Sub? Or do I need special cables to connect to the Crown to both the Onkyo and the HGS and later the Dayton 18 Ultimax if needed? Plan to run the amp bridged for maximum output to the sub or am I mis-understanding how a Pro Amp hooks up and operates? Will my sub output on the Onkyo provide enough signal juice to drive the Crown? Also, I plan to use the LFE crossover in the amp set at 50hz, does this sound correct? Sorry for so many questions but don't want to screw anything up with my "ignorance". Although I've been playing with Home Theater for many years, my set-ups have always been with conventional home audio components that were pretty much straight-forward and no "pro amps". Thanks for any and all advvice!
So, I’m not sure your plan will work. I’m assuming the amp for the HGS is still on the cabinet. It’s been several decades since I’ve looked at the back of one of those beasts. A picture would help. But, I’m thinking there’s no way to run it passive (this what you’re trying to do; subs without built in amps are called passive subs vs your active sub). If your amp is dead. Your best bet would be to remove it and use either a piece of MDF or Baltic Birch to cover the whole removing the amp will leave. If you’re more comfortable with normal banana plugs for connecting your sub with that’s fine. However, I would recommend buying a few things off Parts Express.
Here is a list:
1 of these - Neutrik NL4MP Speakon 4 Pole Panel Mount 092-052. You’ll drill a 15/16 hole in the piece to cover where the plate amp was. You’ll also need one of these; Neutrik SCDP-0 Sealing Gasket for D-size Connectors Black. This makes the pole mount air tight.
2 of these - Neutrik NL4FX Speakon SPX Cable Connector 4P 092-190. This will context to the 1502 amp out and to the 4 Pole Panel Mount.
The people here can help you understand how to hook up all these components. How do you plan on connecting the 1502 to your Onkyo? The 1502 doesn’t have RCA outs. You’ll need either a XLR to RCA cable or RCA to 1/4”. Personally, I’d get a XLR to RCA from Monoprice or Amazon.
Don’t use the crossovers built into the amp. Use the one built into your Onkyo, set at 80hz or 100hz.
Don’t rush anything. I don’t know how you plan on matching that Piano gloss of the HGS. If it were me I’d try to get a nice high gloss from your local hardware store.
Sent from my iPhone using Tapatalk