We have hung on to some really old (maybe 1970’s) Marantz HD 770 floor standing speakers. The cabinets are in beautiful walnut wood condition. Fabric grill is perfect. But the insides....well they look all of their age. I have a surround sound system and like to hear nice sound but am not technical at all. So keep that in mind if my questions seem dumb.
1. Are my Marantz speakers worth having redone?
2. Any rough estimate of what that costs?
3. Any idea of who does something like that in Dallas/Ft Worth area?
To be honest with you, those Japanese speakers were designed to look more impressive than they were.
This is your speaker.
It is a 4 way, second order with crossovers as specified above.
It is sealed but despite that has respectable bass performance, being 3 db down at 33 Hz.
The biggest problem with these types of speakers were the awful midrange drivers, that were cheap TV speakers.
I would not put much money into them.
You can do it yourself and see if you like them.
Here is your service manual.
I suspect that the inards are actually fine except for the controls. I would clean them with contact/tuner cleaner.
The woofer surrounds likely need refoaming. This you can do yourself.
You can get surrounds here.
